CN110243592A

CN110243592A - The longitudinal feed system reliability test and test method of different guide rail layouts

Info

Publication number: CN110243592A
Application number: CN201910629565.9A
Authority: CN
Inventors: 罗巍; 陈菲; 杨兆军; 许彬彬; 郑宏伟
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2019-09-17
Anticipated expiration: 2039-07-12
Also published as: CN110243592B

Abstract

The invention discloses the longitudinal feed system reliability tests and test method of a kind of different guide rail layouts, it is intended to the problem of filling up technological gap；Device includes longitudinal feed system, loading system, detection system and control system；The vertical columns of longitudinal feed system are fixed on test platform, and longitudinal gliding mass is fitted into vertical columns, and rolling guide-rail pairs are mounted between longitudinal gliding mass and vertical columns；The servo loading cylinder component of loading system is mounted on longitudinal gliding mass, its servo-cylinder rod end is connect with test platform, servo loading oil path block and technical weights are mounted on the top of longitudinal gliding mass, the laser interferometer of detection system is mounted on the lower right side for testing platform, grating scale is mounted between longitudinal gliding mass and vertical columns, and No. 1 pressure sensor, No. 2 pressure sensors are separately mounted on balancing cylinder oil path block and servo loading oil path block；Control system is mounted on the ground for testing platform dextral by station therein；The present invention also provides a kind of test methods.

Description

The longitudinal feed system reliability test and test method of different guide rail layouts

Technical field

The present invention relates to a kind of experimental rigs of Precision Manufacturing Technology and field of industrial automation control, more precisely, The present invention relates to the longitudinal feed system reliability tests and test method of a kind of different guide rail layouts.

Background technique

The feed system constituted using ball-screw and linear guide for main transmission parts the group important as numerically-controlled machine tool At part, the height of structure type and precision directly affects the positioning accuracy of lathe, stability and processing quality.With lathe Develop to high speed, high-precision and high stability direction, double ball-screw driving linear feeding systems have good vibration resistance, height The advantages that system stiffness and rapid system responsiveness, can effectively inhibit numerically-controlled machine tool in high speed and high acceleration and deceleration The vibration of generation, thus its high speed and high-precision class numerically-controlled machine tool in using increasingly extensive.

For vertical longitudinal feed system, the portion of the big quality such as main shaft, motor, cutter is mounted on longitudinal gliding mass Part, for the longitudinal movement of longitudinal gliding mass, gravity is born by ball-screw, considerably increases the negative of ball-screw Lotus shortens the service life of its transmission parts.When designing feeding system structure both at home and abroad at present, consideration straight line there is no Influence of the structure type of guide rail for feed system precision does not account for the gravity of the components such as longitudinal gliding mass to ball wire yet The increased loading effects of thick stick.

However, domestic numerically-controlled machine tool in double lead-screw driving longitudinal feed system using upper still at an early stage, it is right It is also seldom in the longitudinal feed system reliability test of different guide rails layout.Reliability test and performance parameter are carried out to it Detection, data analysis and propose that corrective measure is to improve the effectively way of double lead-screw driving one of longitudinal feed system reliability Diameter is of great significance for numerically-controlled machine tool.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the current country to be not equipped with simulation different guide rail layouts longitudinal direction Feed system loads the problem of reliability test and reliability test method of function, provides a kind of different guide rail layouts Longitudinal feed system reliability test and test method.

In order to solve the above technical problems, the present invention is achieved by the following technical scheme: the different guide rails are laid out Longitudinal feed system reliability test include longitudinal feed system, loading system, detection system and control system；

The longitudinal feed system include test platform, vertical columns, balancing cylinder oil path block, longitudinal gliding mass and 2~ The identical rolling guide-rail pairs of 12 structures；

The loading system includes servo loading cylinder component, servo loading oil path block and technical weights；

The detection system includes laser interferometer, grating scale, No. 1 pressure sensor, No. 2 pressure sensors；

The test platform is mounted on horizontal ground, and vertical columns are mounted on test platform and are consolidated using bolt Fixed connection, longitudinal gliding mass are fitted into the inner hole of vertical columns, and the identical rolling guide-rail pairs of 2~12 structures are symmetrically mounted at vertical To between gliding mass and vertical columns to be slidably connected；Servo loading cylinder component is mounted on the circle of the gliding mass at longitudinal gliding mass center In through-hole, the servo-cylinder body in servo loading cylinder component is mounted on longitudinal gliding mass, watching in servo loading cylinder component The central through hole connection on the extension end and test platform of cylinder rod is taken, servo loading oil path block and technical weights are mounted on longitudinal direction On the top end face of gliding mass, piping connection is used between servo loading cylinder component and servo loading oil path block；Laser interferometer peace On the ground for testing platform lower right side, grating scale is mounted between longitudinal gliding mass and vertical columns, No. 1 pressure sensor, 2 Number pressure sensor is separately mounted on balancing cylinder oil path block and servo loading oil path block；Control system passes through operation therein Platform is mounted on the ground for testing platform dextral, control system respectively with longitudinal feed system, loading system and detection system electric wire Connection.

Longitudinal feed system described in technical solution further includes No. 1 lead screw subcomponent, No. 2 lead screw subcomponents, No. 1 balance Cylinder component and No. 2 balancing cylinder components；No. 1 lead screw subcomponent includes No. 1 ball screw assembly, No. 1 lower leading screw bearing Seat；Wherein: No. 1 ball screw assembly, includes ball-screw and lead screw pair nut；No. 1 lead screw subcomponent and No. 2 lead screw pair Modular construction is identical, the lead screw pair circle being symmetrically mounted at the small four prisms cylinder center for being symmetrically disposed in longitudinal gliding mass both ends In through-hole, lead screw pair nut is fixed on the circular bosses on longitudinal gliding mass bottom surface using screw, and the extension end of ball-screw uses 1 Number lower leading screw bearing block is fixed on the lead screw pair round boss on test platform；No. 1 balancing cylinder component includes No. 1 Equilibrium oil cylinder body, No. 1 equilibrium oil cylinder rod and No. 1 balancing cylinder installation section；No. 1 balancing cylinder component and No. 2 balances Cylinder component structure is identical, is symmetrically mounted at the small four prisms cylinder center for being symmetrically disposed in the other both ends of longitudinal gliding mass In balancing cylinder round tube hole, No. 1 equilibrium oil cylinder body is fixed on the circular bosses on longitudinal gliding mass bottom surface using screw, No. 1 balance The extension end of cylinder rod is fixed on the oil cylinder round boss on test platform by No. 1 balancing cylinder installation section.

No. 1 lead screw subcomponent described in technical solution further includes No. 1 servo motor, No. 1 retarder, No. 1 retarder branch Frame, No. 1 upper leading screw bearing block and No. 1 bearing bracket；No. 1 upper leading screw bearing block passes through No. 1 bearing base therein It is mounted in the bracket large through-hole of No. 1 bearing bracket roof and is fixedly connected using screw, No. 1 reducer stent is mounted on 1 The bottom end on the top of number upper leading screw bearing block, No. 1 reducer stent is fixedly connected using screw with No. 1 bearing base, and No. 1 slows down The top that device is mounted on No. 1 reducer stent is fixedly connected using screw, and No. 1 servo motor output shaft is inserted into No. 1 retarder In right center hole, rigid connection is realized between the two, and the circular mounting plate on the right side of No. 1 retarder is mounted on using screw On；Ball-screw in No. 1 ball screw assembly, is fitted into No. 1 upper leading screw bearing block, ball-screw and No. 1 upper leading screw bearing block it Between to roll connection, the upper end of ball-screw is using No. 1 decelerator connection shaft in No. 1 locking key and No. 1 upper leading screw bearing block Connection in inner circle seam allowance that No. 1 decelerator connection shaft is mounted on No. 1 retarder bottom face and is adopted and is screwed, ball wire The lower end of thick stick is fixedly connected using No. 1 lower leading screw round nut with No. 1 lower leading screw bearing block, and No. 1 lower leading screw bearing block is by wherein No. 1 lower leading screw pedestal be fixedly connected with the lead screw pair circle convex platform that lead screw diagonal line one end is arranged on test platform, No. 1 The bracket large through-hole of bearing bracket roof, No. 1 upper leading screw bearing block, No. 1 reducer stent, No. 1 retarder, No. 1 ball wire The rotation conllinear of thick stick pair and No. 1 lower leading screw bearing block.

Test platform described in technical solution is using the symmetrical eight ribs body in front and rear, left and right made of monoblock cast mode Board-like hollow structural members, the staggered reinforcing rib of reasonable Arrangement transverse and longitudinal inside test platform, in test platform bottom, surrounding is equably It is provided with the identical Niche type lower margin of structure to be fixedly connected, Niche type lower margin fixed connection structure is that interior horizontal cuboid is empty Between, it is drilled with a through-hole on its bottom surface, test platform is fixed on ground with screw；It is vertical on the surrounding edge of test platform Direction is equably provided with No. 1 screwing through hole of installation vertical columns, and it is logical that a center circle is arranged at the center of test platform A round ring boss, edge and center circle through-bore axis on round ring boss are arranged around the upper aperture of center round tube hole for hole Parallel direction is equably provided with No. 2 threaded holes of installation servo-cylinder fixed plate, and one on test platform and solid Determine that identical No. 2 round tube holes of two structures are symmetrically arranged on the line of symmetry that the lead screw diagonal line of column inner hole coincides, two A lead screw pair round ring boss, the edge on round ring boss is respectively set around the upper aperture of identical No. 2 round tube holes of structure Axial No. 3 threaded holes for being equably provided with No. 1 lower leading screw pedestal of installation；In another of test platform and vertical columns inner hole Identical No. 3 round tube holes of two structures are symmetrically arranged on the line of symmetry that oil cylinder diagonal line coincides, two structures are No. 3 identical An oil cylinder round ring boss is respectively set around the upper aperture of round tube hole, along No. 3 round tube holes on oil cylinder round ring boss No. 4 threaded holes of No. 1 balancing cylinder fixed plate in axial equably setting installation longitudinal feed system.

Vertical columns described in technical solution are right using the front and rear, left and right of iso-cross-section made of monoblock cast mode The hollow eight ribs body structure part claimed is set as regular quadrangle through-hole inside center, and four corners is provided with structure phase The position of same rectangular through-hole, the rectangular through-hole of four corners and the regular quadrangle through-hole at center is arranged symmetrically for left and right, front and back, It is evenly provided with horizontal and vertical gusset between the outer post jamb of vertical columns and inner hole wall, outside vertical columns on post jamb and lateral gusset The through-hole of back gauges such as it is provided with；In vertical columns bottom, it is empty to be equably provided with the identical Niche type cuboid of structure for surrounding Between, the vertical through-hole for mounting screw is provided on the bottom surface of each Niche type cuboid space；In vertical columns No. 1 lead screw pair in installation longitudinal feed system is symmetrically provided on the upper surface at the lead screw diagonal line both ends of regular quadrangle through-hole No. 1 threaded hole of two rows of component；Be arranged respectively on four hole walls of vertical columns regular quadrangle through-hole symmetrically there are three The identical vertical guide-track groove of structure is equably provided in installation longitudinal feed system in the groove bottom of each guide-track groove and rolls No. 2 threaded holes of guide rail in dynamic guideway；Rectangle in installation oil cylinder diagonal line one end of vertical columns regular quadrangle through-hole is logical No. 3 threaded holes of grating ruler reading head in installation grating scale are provided on the inner sidewall of hole.

The main body of longitudinal gliding mass described in technical solution is square the body structure of the quadrangular bodily form of iso-cross-section Part, the identical small four prisms cylinder of structure of square equal cross-section is provided at each angle of the main body of four prisms cylinder, and longitudinal gliding mass is The symmetrical structural member in front and rear, left and right, longitudinal gliding mass and, longitudinal direction identical as the shape of the central through hole of its equipped vertical columns The structure size of gliding mass is less than the structure size of the central through hole of vertical columns；The inside of longitudinal gliding mass is equipped with horizontal and vertical muscle Plate；One is provided centrally with for installing the gliding mass circular through hole of servo loading cylinder component, longitudinal gliding mass in longitudinal gliding mass Upper surface be provided with it is parallel with main wall for fixing the T-slot of workpiece or technical weights；Symmetrical small tetragonous It is logical that 1 balancing cylinder circle for installing No. 1 balancing cylinder component and No. 2 balancing cylinder components is each provided at the center of cylinder Hole is provided with 4 structure phases in the upper surface of the longitudinal gliding mass for the balancing cylinder round tube hole inboard for installing No. 1 balancing cylinder component Same No. 1 screw hole for being used to install balancing cylinder oil path block；Outside the balancing cylinder round tube hole for installing No. 2 balancing cylinder components A row is vertically provided on the lateral wall of longitudinal gliding mass of side for installing No. 2 threaded holes of grating scale main scale；

1 lead screw is each provided at the center of small four prisms cylinder for installing No. 1 lead screw subcomponent and No. 2 lead screw subcomponents Secondary round tube hole is provided with 4 structures in the upper surface of the longitudinal gliding mass for the lead screw pair round tube hole inboard for installing No. 2 lead screw subcomponents Identical No. 3 threaded holes for being used to install servo loading oil path block；On four wall of main body of longitudinal gliding mass, on every side wall all uniformly Three slide block slots are arranged in ground, and three slide block slots in opposing sidewalls are relatively just each provided with 6 in the upper and lower ends of each slide block slot A No. 4 threaded holes for being used to install rolling guide-rail pairs；On the bottom face of longitudinal gliding mass, it is arranged one around the round tube hole of center A No. 1 circle convex platform is equably provided in No. 1 circle convex platform along axial direction No. 5 for installing servo loading cylinder component The identical balance circle of 2 structures is arranged on the bottom face of longitudinal gliding mass in threaded hole around two balancing cylinder round tube holes Ring convex platform is equably provided with along axial direction for installing No. 1 balancing cylinder component and No. 2 balances in 2 balance circle convex platforms No. 6 threaded holes of cylinder component；2 lead screw pair circle convex platforms are set around 2 lead screw pair round tube holes, in 2 lead screw pair No. 7 threaded holes for installing No. 1 lead screw subcomponent and No. 2 lead screw subcomponents are equably provided with along axial direction in circle convex platform.

Balancing cylinder oil path block described in technical solution includes balance oil path block, the identical balance oil-way pipe of 4 structures The identical No. 1 plug-in solenoid directional control valve of connector, 2 structures and No. 1 proportional direction valve；The work oil inlet of balancing cylinder oil path block Mouth, work oil outlet are connected with No. 1 balancing cylinder component, No. 2 balancing cylinder components respectively simultaneously；The balance oil path block is The bottom end of the structural member of cuboid, front and back side is respectively arranged with the mounting foot of the identical strip of structure, 2 strips The identical mounting foot of structure on be each provided with 2 round tube holes for mounting screw；It balances and is set on the right side of oil path block It sets there are two No. 1 threaded hole, is the oil inlet P 1 and oil return inlet T 1 of hydraulic power source；It is provided on the right side of balance oil path block upper surface Four No. 2 threaded holes are provided with 4 round tube holes, the oil inlet of respectively No. 1 proportional direction valve among 4 No. 2 threaded holes P2, oil return inlet T 2, work oil inlet A1 and work oil return opening B1, wherein oil inlet P 2 is connected with oil inlet P 1, oil return inlet T 2 It is connected with oil return inlet T 1；There are two No. 3 threaded holes for left side setting in balance oil path block upper surface, are No. 1 plug-in electromagnetism The work oil inlet A2 and work oil return opening B2 of reversal valve work wherein the oil inlet A2 that works is connected with work oil inlet A1 Oil return opening B2 is connected with work oil return opening B1；The top of balance oil path block left side is provided with 2 No. 4 threaded holes, for inspection The work oil inlet A3 of No. 1 pressure sensor in examining system and work oil return opening B3, wherein work oil inlet A3 and work into Hydraulic fluid port A2 is connected, and work oil return opening B3 is connected with work oil return opening B2；The lower part of balance oil path block left side is provided with 2 A No. 5 threaded holes, for the oil inlet P 3 and oil return inlet T 3 for balancing oil path block, wherein oil inlet P 3 is connected with oil inlet A2, returns Hydraulic fluid port T3 is connected with work oil return opening B2, oil inlet P 3, oil return inlet T 3 respectively with the oil inlet A of No. 1 equilibrium oil cylinder body and go out Hydraulic fluid port B is connected.

Control system described in technical solution is connected with longitudinal feed system, loading system and detection system electric wire respectively Refer to: the X1 interface of No. 1 single motor module is connected by motor cable with No. 1 servo motor；The single electricity of described No. 2 The X1 interface of machine module is connected using motor cable with No. 2 servo motors；No. 1 plug-in solenoid directional control valve is mounted on It balances on No. 3 threaded holes on the left of oil path block upper surface, electric wire is connected on the X111 interface of No. 1 input/output module； No. 1 proportional direction valve is mounted on No. 2 threaded holes on the right side of balance oil path block upper surface, and electric wire is connected to No. 1 On the X3-1 interface of input/output module；No. 2 plug-in solenoid directional control valves are mounted on the left of servo oil circuit block upper surface No. 3 threaded holes on, electric wire is connected on the X111 interface of No. 2 input/output modules；No. 2 proportional direction valves peace On No. 2 threaded holes on the right side of servo oil circuit block upper surface, electric wire is connected to the X3-1 interface of No. 2 input/output modules On；The laser interferometer calibrates laser interferometer using Britain's Reinshaw XL-80, and it is defeated that electric wire is connected to No. 2 inputs Out on the X3-2 interface of module；The electric wire of the grating scale is connected on the X520 interface of direct measuring system；Described Identical No. 1 pressure sensor of two structures is mounted on No. 4 threaded holes on the top of balance oil path block left side, electric wire It is connected on the X3-2 interface of No. 1 input/output module；Identical No. 2 pressure sensors of two structures are mounted on servo On No. 4 threaded holes on the top of oil path block left side, electric wire is connected on the X3-3 interface of No. 2 input/output modules.

Control system described in technical solution includes station shell, Siemens's 828D system, 24V power supply, mouse, key Disk, No. 1 input/output module, No. 2 input/output modules, direct measuring system, adjustment type power module, No. 1 single motor module With No. 2 single motor modules；The 24V power supply is connected using electric wire with the X1 interface of Siemens 828D system；Described Mouse-keyboard is mounted on the upper surface of extension before station, and mouse-keyboard is using electric wire and Siemens 828D system USB interface be connected；The keyboard is mounted on the upper surface of extension before station, keyboard using electric wire with The USB interface of Siemens's 828D system is connected；No. 1 input/output module using cable by its POINT1 interface end and The PN1 interface end of Siemens's 828D system is connected；No. 2 input/output modules use cable by its POINT1 interface end It is connected with the POINT2 interface end of No. 1 input/output module；The X500 interface of the direct measuring system of described No. 1 uses cable It is connected with the X203 interface of No. 1 single motor module；The X200 interface end of the adjustment type power module uses cable and west The X100 interface end of the sub- 828D system of door is connected；The X201 interface of No. 1 single motor module uses cable and adjustment type The X202 interface of power module is connected, and the X202 interface of No. 1 single motor module is connected with the X201 of No. 2 single motor modules, and No. 1 The X203 interface of single motor module is connected by electrical cable with the X500 interface of No. 1 direct measuring system, No. 1 single motor The X1 interface of module is connected by motor cable with No. 1 servo motor；The X201 interface of No. 2 single motor modules uses Cable is connected with the X202 interface of No. 1 single motor module, and the X1 interface of No. 2 single motor modules is watched by motor cable with No. 2 Motor is taken to be connected.

The step of test method of the longitudinal feed system reliability test of the different guide rails layout, is as follows:

1) reliability test prepares

(1) testing program is formulated, determines the layout type of guide rail quantity and guide rail；

(2) keeping test ambient temperature constant is 20 ± 5 degrees Celsius, the longitudinal feed system reliability of different guide rail layouts Experimental rig places the time greater than 12 hours in experimental enviroment；

2) reliability no-load test

(1) start automatic control program, reliability no-load test starts timing；

(2) power output of servo loading cylinder component is set in the controls as 0；Industry is not provided on longitudinal gliding mass The longitudinal feed system of counterweight, i.e., different guide rail layouts is no-load condition；

(3) according to the test procedure of setting, existed using the longitudinal feed system that laser interferometer detects different guide rail layouts Positioning accuracy and repetitive positioning accuracy under light condition；

(4) the precision index allowable tolerance of the longitudinal feed system of different guide rail layouts is determined；

3) reliability load test；

4) reliability test comparative analysis

(1) the fault data processing for statistical analysis after the completion of reliability test, to test acquisition.According to test number According to when calculating point estimation and the interval estimation of distribution parameter, and then obtaining average time between failures, average catastrophe failure interval Between and reliability point estimation and interval estimation, analysis is tested the reliability water of the longitudinal feed system of different guide rails layout It is flat；

(2) in reliability test, in addition to the layout type of different guide rail quantity and guide rail, remaining alternative condition is kept Under unanimous circumstances, can more different guide rails layout longitudinal feed system reliability height；

(3) during reliability test, if there is control system alarm, oil cylinder damage, lead screw abrasion, Hydraulic Elements When damage, oil pressure deficiency, the failure of oil leak, then it should stop testing immediately, analyze failure Producing reason, and to different guide rail cloth The longitudinal feed system reliability test of office improves.

Reliability load test described in technical solution refers to:

(1) start automatic control program, reliability load test starts timing；

(2) loading force and Loaded contact analysis of servo loading cylinder component are set in the controls, and Loaded contact analysis mainly wraps Include straight wave, trapezoidal wave, sine wave, triangular wave, square wave and random wave etc.；

(3) technical weights needed for placing test requirements document on longitudinal gliding mass, for simulating true inertia load；

(4) according to the test procedure of setting, longitudinal gliding mass reciprocation cycle between effective travel is surveyed by laser interferometer The positioning accuracy and repetitive positioning accuracy and real-time Transmission for measuring longitudinal gliding mass are to Siemens's 828D system；

(5) data that Siemens 828D system is detected using laser interferometer, the actual location precision of longitudinal gliding mass, Repetitive positioning accuracy is compared with the positioning accuracy that control system is set, repetitive positioning accuracy allowable tolerance, if actual value is greater than Setting value then determines the synchronous driving servo feed system precision failure of the double lead-screw, is denoted as a precision failure of removal；

(6) control system also recording control system alarm, oil cylinder damage, lead screw abrasion, Hydraulic Elements damage, oil pressure not Sufficient, oil leak failure；If after breaking down, stopping this reliability test, and record this time continuous no-failure operation of test Time；

(7) after the longitudinal feed system of different guide rail layouts breaks down, then stop this reliability test, control system Calculate this time continuous time between failures of test；If after reaching with the time of fixed time test, different guide rail layouts There are not precision failure or other failures yet in longitudinal feed system, stops this reliability test yet；

(8) according to the loading force and Loaded contact analysis of setting different servo load cylinder component, above-mentioned (1)-(7) step is repeated Suddenly.

Compared with prior art the beneficial effects of the present invention are:

1. the longitudinal feed system reliability test of the present invention using different guide rails layout uses balance The method of oil cylinder balances the weight of the components such as longitudinal gliding mass, reduces the load of ball-screw, it is longitudinally quick to improve feed system The ability of mobile response, improves the Static and dynamic performance and precision of feed system.

2. the longitudinal feed system reliability test of the present invention using different guide rails layout can be to difference The reliability and precision stability of the double lead-screw balance drive feed system of guide rail layout are tested and are detected, and are operated and are detected Convenient, testing result is reliable.By carrying out mould to the tested double lead-screw balance drive feed system using different guide rails layout The reliability test of quasi- real working condition, exposure and excitation product failure, for product reliability growth and assessment provide it is practical Basic data.

3. the longitudinal feed system reliability test of difference guide rail layout of the present invention, which has, automatically controls system System can automatically record accuracy data under program, while automatically record failure number when there is precision failure or failure According to.

4. the longitudinal feed system reliability test of the present invention using different guide rails layout is using load weight The due weight of institute in the practical driving process of method simulation of code, the inertia that can be driven with real simulation longitudinal feed system Load.

5. the longitudinal feed system reliability test of the present invention using different guide rails layout is watched using electro-hydraulic It takes loading system and dynamic and static load is carried out to longitudinal gliding mass, to simulate the double lead-screw balance drive feeding of different guide rail layouts The load that system is born in the actual processing process.

Detailed description of the invention

The present invention will be further described below with reference to the drawings:

Fig. 1 is the longitudinal feed system reliability test structure composition of the present invention being laid out using different guide rails Axonometric projection view；

Fig. 2 is the longitudinal feed system reliability test structure composition of the present invention being laid out using different guide rails Top view；

Fig. 3 fills for the longitudinal feed system reliability test of the present invention at A-A in Fig. 2 using different guide rails layout The full sectional view of double lead-screw driving device structure composition employed in setting；

Fig. 4 is employed in the longitudinal feed system reliability test of the present invention using different guide rails layout Upper leading screw installing component structure composition enlarged cross-sectional view；

Fig. 5 is employed in the longitudinal feed system reliability test of the present invention using different guide rails layout No. 1 upper leading screw bearing block structure composition enlarged cross-sectional view；

Fig. 6 is institute in Fig. 3 longitudinal feed system reliability test of the present invention using different guide rails layout The enlarged cross-sectional view of No. 1 lower leading screw bearing block structure composition used；

Fig. 7 fills for the longitudinal feed system reliability test of the present invention at B-B in Fig. 2 using different guide rails layout The full sectional view of 1, No. 2 balancing cylinder modular construction composition employed in setting；

Fig. 8 is employed in the longitudinal feed system reliability test of the present invention using different guide rails layout No. 1 balancing cylinder installation section structure composition enlarged cross-sectional view；

Fig. 9 is employed in the longitudinal feed system reliability test of the present invention using different guide rails layout Servo-cylinder installation section structure composition enlarged cross-sectional view；

Figure 10 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting Balancing cylinder oil path block structure composition breakdown axonometric projection view；

Figure 11 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting Servo loading oil path block modular construction forms breakdown axonometric projection view；

Figure 12 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The main view of grating scale structure composition；

Figure 13 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The axonometric projection view of test platform structure composition；

Figure 14 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The axonometric projection view of vertical columns structure composition；

Figure 15 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The schematic block diagram of Control system architecture composition；

Figure 16 is the process of the longitudinal feed system reliability test method of the present invention using different guide rails layout Block diagram；

Figure 17 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The axonometric projection view of the longitudinal gliding mass modular construction composition of No. 1 of different guide rail layouts；

Figure 18 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The axonometric projection view of the longitudinal gliding mass modular construction composition of No. 2 of different guide rail layouts；

Figure 19 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The axonometric projection view of the longitudinal gliding mass modular construction composition of No. 3 of different guide rail layouts；

Figure 20 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The axonometric projection view of the longitudinal gliding mass modular construction composition of No. 4 of different guide rail layouts；

Figure 21 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The axonometric projection view of the longitudinal gliding mass modular construction composition of No. 5 of different guide rail layouts；

Figure 22 in the longitudinal feed system reliability test of the present invention using different guide rails layout by adopting The axonometric projection view of the longitudinal gliding mass modular construction composition of No. 6 of different guide rail layouts；

In figure: 1. test platforms, 2. vertical columns, No. 3.1 lead screw subcomponents, No. 301.1 servo motors, No. 302.1 subtract Fast device, No. 303.1 reducer stents, No. 304.1 upper leading screw bearing blocks, No. 30401.1 locking keys, No. 30402.1 retarders connect Spindle, No. 30403.1 upper leading screw round nuts, spacer in No. 30404.1 upper leading screws, No. 30405.1 upper leading screw oil sealing pressing plates, Oil sealing in No. 30406.1 upper leading screws, No. 30407.1 upper leading screw upper end covers, No. 30408.1 bearing bases, No. 30409.1 deep-groove balls Bearing, spacer in No. 30410.1 upper leading screws, No. 30411.1 self-aligning thrust roller bearings, No. 30412.1 tapered roller bearings, No. 30413.1 upper leading screw lower covers, oil sealing pressing plate under No. 30414.1 upper leading screws, oil sealing under No. 30415.1 upper leading screws, 30416.1 Spacer under number upper leading screw, No. 305.1 bearing brackets, No. 306.1 ball screw assembly,s, No. 307.1 lower leading screw bearing blocks, Spacer in No. 30701.1 lower leading screws, oil sealing pressing plate in No. 30702.1 lower leading screws, oil sealing in No. 30703.1 lower leading screws, 30704.1 Number lower leading screw upper end cover, No. 30705.1 cylinder roller bearings, No. 30706.1 lower leading screw lower covers, under No. 30707.1 lower leading screws Oil sealing, oil sealing pressing plate under No. 30708.1 lower leading screws, spacer under No. 30709.1 lower leading screws, No. 30710.1 lower leading screw round nuts, No. 30711.1 lower leading screw pedestals, No. 4.1 balancing cylinder components, No. 401.1 equilibrium oil cylinder bodies, No. 402.1 equilibrium oil cylinder rods, No. 403.1 balancing cylinder installation sections, No. 40301.1 balancing cylinder fixed plates, No. 40302.1 balancing cylinder round nuts, 5. is flat Weigh oil path in oil cylinder block, 501. balance oil path blocks, 502. balance oil circuit pipe fittings, No. 503.1 pressure sensors, No. 504.1 insertings Formula solenoid directional control valve, No. 505.1 proportional direction valves, 6. longitudinal gliding masses, 7. servo loading cylinder components, 701. servo-cylinder bodies, 702. servo-cylinder bars, 703. servo-cylinder installation sections, 70301. servo-cylinder fixed plates, 70302. servo-cylinders circle spiral shell Mother, 8. rolling guide-rail pairs, 801. linear guides, 802. sliding blocks, No. 9.2 lead screw subcomponents, No. 901.2 servo motors, No. 902.2 Retarder, No. 903.2 reducer stents, No. 904.2 upper leading screw bearing blocks, No. 905.2 bearing brackets, No. 906.2 ball wires Thick stick pair, No. 907.2 lower leading screw bearing blocks, 10. servo loading oil circuit block assemblies, 1001. servo oil circuit blocks, 1002. servo oil circuits Pipe fitting, No. 1003.2 pressure sensors, No. 1004.2 plug-in solenoid directional control valves, No. 1005.2 proportional direction valves, 11. industry Counterweight, 12. stations, 13. laser interferometer, 14. grating scales, 1401. grating scale main scales, 1402. grating ruler reading heads, 15.2 Number balancing cylinder component, 16. Siemens's 828D systems, 17.24V power supply, 18. mouses, 19. keyboards, No. 20.1 input and output moulds Block, No. 21.2 input/output modules, 22. direct measuring systems, 23. adjustment type power modules, No. 24.1 single motor modules, 25.2 Number single motor module.

Specific embodiment

The present invention is explained in detail with reference to the accompanying drawing:

The present invention provides the different operating conditions of the longitudinal feed system of different guide rails layout in actual operation, by not In the case where with load, the reliability and precision reliability data of double lead-screw balance drive feed system are obtained, is provided simultaneously The longitudinal feed system reliability test method of the different guide rails layout of complete set.

It is of the present invention difference guide rail layout longitudinal feed system reliability test and test method mainly by Two large divisions's composition, i.e. the longitudinal feed system reliability test of different guide rails layout and different guide rails layout it is longitudinal into To the reliability test method of System Reliability Test device.

The longitudinal feed system reliability test of one, difference guide rail layout

Refering to fig. 1 with Fig. 2, it is of the present invention using different guide rails be laid out longitudinal feed system reliability test Including longitudinal feed system, loading system, detection system and control system.

1. longitudinal feed system

Refering to fig. 1 with Fig. 2, the longitudinal feed system includes 2, No. 1 test platform 1, vertical columns lead screw subcomponents 3, No. 2 balancing cylinder component 4,2 of lead screw subcomponent 9,1 balancing cylinder components 15, balancing cylinder oil path block 5, longitudinal gliding mass 6 Rolling guide-rail pairs 8 identical with 2~12 structures.

Wherein: No. 1 lead screw subcomponent 3 and No. 2 lead screw 9 structures of subcomponent are identical, and it is a pair of to be symmetrically mounted at longitudinal gliding mass 6 Both ends on linea angulata；No. 1 balancing cylinder component 4 and No. 2 balancing cylinder 15 structures of component are identical, are equally symmetrically mounted at longitudinal direction Both ends on 6 other diagonal lines of gliding mass.

Refering to fig. 1, Fig. 3, Fig. 7 and Figure 13, the test platform 1 are mounted on ground, and test platform 1 is using whole Upper and lower, the symmetrical board-like hollow structural member of eight ribs body, 1 inside reasonable Arrangement transverse and longitudinal of test platform made of forging type Staggered reinforcing rib has good wearability and shock absorption to improve the rigidity and intensity of test platform 1；In test platform 1 Bottom surrounding is equably provided with the identical Niche type lower margin of structure and is fixedly connected, and Niche type lower margin fixed connection structure is interior sleeping Formula cuboid space is drilled with a through-hole on its bottom surface, and test platform 1 is fixed on ground with screw；It is flat in test The surrounding of platform 1 is equably provided with No. 1 screwing through hole of installation vertical columns 2 along the vertical direction；At the center of test platform 1 One center round tube hole is set, a round ring boss, the edge on round ring boss are set around the upper aperture of center round tube hole The direction parallel with center circle through-bore axis is equably provided with No. 2 threaded holes of installation servo-cylinder fixed plate 70301；? Two knots are symmetrically set on a line of symmetry to coincide with the lead screw diagonal line of 2 inner hole of vertical columns on test platform 1 A lead screw pair circular ring shape is respectively set around the upper aperture of identical No. 2 round tube holes of two structures in identical No. 2 round tube holes of structure Boss, the edge direction parallel with the axis of No. 2 round tube holes is equably provided with silk under installation 1 on lead screw pair round ring boss No. 3 threaded holes of thick stick pedestal 30711；In pair that the oil cylinder diagonal line of test platform 1 another and 2 inner hole of vertical columns coincides Claim to be symmetrically arranged two identical No. 3 round tube holes on line, is respectively set one around the upper aperture of two identical No. 3 round tube holes A oil cylinder round ring boss, peace is equably arranged in the edge direction parallel with the axis of No. 3 round tube holes on oil cylinder round ring boss Fill No. 4 threaded holes of No. 1 balancing cylinder fixed plate 40301.

Refering to fig. 1, Fig. 2, Fig. 3, Fig. 7 and Figure 14, the vertical columns 2 is using equal cross made of monoblock cast mode The symmetrical hollow eight ribs body structure part in the front and rear, left and right in section is set as regular quadrangle through-hole inside center, and every The identical rectangular through-hole of structure is provided at a angle, the rectangular through-hole of four corners is connected with the regular quadrangle through-hole at center, The rectangular through-hole of four corners and the symmetrical center line of the regular quadrangle through-hole at center are parallel to each other, the rectangular through-hole of four corners and The position of regular quadrangle through-hole at center is left and right, arrangement symmetrical above and below, uniform between the outer post jamb of vertical columns 2 and inner hole wall Ground is equipped with horizontal and vertical gusset, can greatly improve the rigidity and intensity of vertical columns 2, the outer post jamb of vertical columns 2 and transverse direction The through-hole of back gauges such as it is provided on gusset, these through-holes have the function of loss of weight and convenient clear husky；

The identical Niche type lower margin of structure is equably provided in 2 bottom surrounding of vertical columns to be fixedly connected, Niche type Foot is fixedly connected as interior horizontal cuboid space, and a through-hole is arranged on its bottom surface, using screw that vertical columns 2 are fixed On No. 1 threaded hole of test platform 1；It is right on the upper surface at the lead screw diagonal line both ends of 2 regular quadrangle through-hole of vertical columns It is provided with No. 1 threaded hole of two rows of No. 1 bearing bracket 305 of installation with claiming；In four hole walls of 2 regular quadrangle through-hole of vertical columns Upper difference is equably arranged there are three the identical vertical guide-track groove of structure, is equably arranged in the groove bottom of each guide-track groove There are No. 2 threaded holes of guide rail 801 in installation rolling guide-rail pairs 8；In pair of the installation oil cylinder of the regular quadrangle through-hole of vertical columns 2 No. 3 threaded holes of grating ruler reading head 1402 in installation grating scale 14 are provided on the rectangular through-hole inner sidewall of one end of linea angulata.

No. 1 lead screw subcomponent 3 include No. 1 retarder 302,1 of servo motor 301,1 reducer stent 303, No. 1 306, No. 1 lower leading screw bearing blocks 307 of ball screw assembly, of bearing bracket 305,1 of upper leading screw bearing block 304,1.

No. 1 servo motor 301 uses Siemens 1PH8 series of servo motor, and output shaft is inserted into No. 1 retarder In 302 right center hole, rigid connection is realized between the two, and the circle of No. 1 302 right side of retarder is mounted on by screw On shape mounting plate.The wire and cable of No. 1 servo motor 301 is connected on the X1 interface of No. 1 single motor module 24, No. 1 servo electricity The signal cable of machine 301 is connected on the X202 interface of No. 1 single motor module 24.

No. 1 retarder 302 is right angle retarder, high-precision using German Si Debo brand PHQ1131 series Spend retarder.It is circular mounting plate on the right side of No. 1 retarder 302, screw hole, setting among circular mounting plate is evenly equipped on circumference There is circular inner hole, the connection for motor shaft.The middle section of No. 1 retarder 302 is square flange mounting plate, mounting plate four It arranges on angle there are four fixed round tube hole, is mounted on by screw on the screw hole of No. 1 303 upper surface of reducer stent.1 The lower end of number retarder 302 is circular shaft class shape, and lower surface is provided centrally with inner circle seam allowance, it is provided circumferentially about have it is uniformly distributed Screw hole.

No. 1 reducer stent 303 is ladder circle cylindrical stent, is evenly equipped with screw hole on surface perimeter thereon, It is evenly equipped with round tube hole on the circumference of flange of lower part, the screw of 30408 flange shaft upper surface of No. 1 bearing base is mounted on using screw Kong Shang.

Refering to Fig. 5, No. 1 upper leading screw bearing block 304 includes 30401, No. 1 decelerator connection shafts of No. 1 locking key 30402, in 30403, No. 1 upper leading screws of No. 1 upper leading screw round nut on the upper leading screw oil sealing pressing plate 30405,1 of spacer 30404,1 The upper leading screw upper end cover 30407,1 of oil sealing 30406,1 deep groove ball bearing 30409,1 of bearing base 30408,1 on lead screw 30412, No. 1 upper leading screw lower ends of the self-aligning thrust roller bearing 30411,1 of spacer 30410,1 tapered roller bearing in upper leading screw Spacer 30416 under oil sealing 30415 and No. 1 upper leading screw under 30414, No. 1 upper leading screws of oil sealing pressing plate under 30413, No. 1 upper leading screws of lid.

The locking key 30401 uses GB/T1096-2003A type round end general flat key, is mounted on No. 1 ball screw assembly, At the keyway of 306 first parts.

No. 1 decelerator connection shaft 30402 is three sections of staged flange axis, and uppermost one section of axis is mounted on 1 In inner circle seam allowance on number 302 bottom face of retarder, it is uniformly arranged round tube hole on the circumference of in-between one-stage process orchid axis, using spiral shell Nail is fixedly mounted on the screw hole of No. 1 302 bottom face of retarder, and one is arranged at the center of No. 1 decelerator connection shaft 30402 Round tube hole, and an elongated keyway is set.

No. 1 upper leading screw round nut 30403 uses GB/T812-1988 round nut, using identical two round nuts It is mounted at the threaded upper ends of No. 1 ball screw assembly, 306.

Spacer 30404 is hollow disc-like annular structural part in No. 1 upper leading screw, is used for positioned at intervals 1 Lead screw round nut 30403 and No. 1 deep groove ball bearing 30409.

No. 1 upper leading screw oil sealing pressing plate 30405 is hollow disc-like annular structural part, thereon on the circumference of end face It is evenly equipped with circular shape round tube hole, is arranged with being mounted on the even circumferential of 30407 inside of No. 1 upper leading screw upper end cover using screw On screw hole.

Oil sealing 30406 is mounted on using packet matrix type sealing ring in GB/T13871.1-2007 in No. 1 upper leading screw In the innermost oil sealing annular groove of No. 1 upper leading screw upper end cover 30407.

No. 1 upper leading screw upper end cover 30407 is hollow revolving body ladder circle ring, and the center is provided with installation 1 The upper spacer through-hole of No. 1 of spacer 30404 in number upper leading screw is provided with oil seal ring slot, upper oil sealing on the outside of No. 1 upper spacer through-hole The upper circular pressing plate stepped hole for installing No. 1 upper leading screw oil sealing pressing plate 30405 is provided on the outside of annular groove, in upper circular pressing plate Circumferentially equably it is disposed with top board screw hole on the hole bottom surface of stepped hole, the outside of top board screw hole is circumferentially equably It is provided with upper end cover screw hole, for No. 1 upper leading screw upper end cover 30407 to be mounted on No. 1 30408 method of bearing base using screw On the top of blue axis.

No. 1 bearing base 30408 is hollow revolving body step ladder circular ring flange part, No. 1 bearing base 30408 it is upper End flanges disk is uniformly distributed with round tube hole along the circumference, for being pushed up No. 1 bearing base 30408 and No. 1 bearing bracket 305 using screw The threaded hole at end is connected；The upper flanges disk of No. 1 bearing base 30408 is circumferentially also evenly equipped with screw hole, round tube hole and spiral shell The alternate arrangement of nail hole, the bottom end of No. 1 bearing base 30408 are circumferentially vertically evenly equipped with for installing No. 1 upper leading screw lower cover 30413 screw hole.

No. 1 deep groove ball bearing 30409 is to meet standard GB/T/T 276-1994 deep groove ball bearing.

Spacer 30410 is the disc-like annular structural part of hollow trapezoidal cross-section in No. 1 upper leading screw, between being used for Every No. 1 deep groove ball bearing 30409 and No. 1 self-aligning thrust roller bearing 30411.

No. 1 self-aligning thrust roller bearing 30411 is to meet standard GB/T/T 5859-2008 thrust force aligning Roller bearing.

No. 1 tapered roller bearing 30412 is to meet standard GB/T/T 297-1994 tapered roller bearing.

No. 1 upper leading screw lower cover 30413 is hollow revolving body ladder circle ring, and the center is provided with installation 1 No. 1 lower spacer through-hole of spacer 30416 under number upper leading screw is provided with lower oil sealing annular groove, lower oil sealing on the outside of No. 1 lower spacer through-hole The lower circular shape hole for installing oil sealing pressing plate 30414 under No. 1 upper leading screw is provided on the outside of annular groove, in lower circular shape hole Hole bottom surface on be circumferentially equably disposed with lower platen screw hole, the outside of lower platen screw hole is circumferentially equably provided with Lower cover screw hole, for No. 1 upper leading screw lower cover 30413 to be mounted on to the bottom end of No. 1 bearing base 30408 using screw On.

Oil sealing pressing plate 30414 is hollow disc-like annular structural part under No. 1 upper leading screw, is uniformly distributed along the circumference thereon There is circular shape round tube hole, for oil sealing pressing plate 30414 under No. 1 upper leading screw to be mounted on No. 1 upper leading screw lower cover using screw In circular shape hole on 30413.

Oil sealing 30415 is mounted on using packet matrix type sealing ring in GB/T13871.1-2007 under No. 1 upper leading screw In oil sealing annular groove on No. 1 upper leading screw lower cover 30413.

Spacer 30416 is hollow disc-like annular structural part under No. 1 upper leading screw, is used for No. 1 circle of positioned at intervals Taper roller bearing 30412 and No. 1 ball screw assembly, 306.

No. 1 bearing bracket 305 is the antinose-dive leg of cuboid, and bosom is symmetrically provided with two Waling is provided with a bracket large through-hole at the center of the roof of No. 1 bearing bracket 305, for installing No. 1 bearing Pedestal 30408 is along the circumferential direction evenly equipped with for installing No. 1 bearing base 30408 around the bracket large through-hole on roof Screw hole.A bracket small through hole is provided at the center of the bottom wall of No. 1 bearing bracket 305, for installing No. 1 ball-screw Pair 306, the rotation conllinear of the bracket small through hole on bracket large through-hole and bottom wall on roof；No. 1 bearing bracket 305 Left and right sides is provided with the mounting foot of the identical strip of structure, is respectively arranged on the mounting foot of the identical strip of 2 structures There is uniformly distributed round tube hole, the lead screw for No. 1 bearing bracket 305 to be mounted on 2 upper surface of vertical columns using screw is diagonal On symmetrically arranged two rows of No. 1 threaded holes in line both ends.

FFZD type heavy duty roller lead screw pair of No. 1 ball screw assembly, 306 using Nanjing technique brand, No. 1 ball Lead screw pair 306 includes ball-screw and lead screw pair nut；

The ball-screw is divided into six parts from top to bottom, and first part is optical axis, and a keyway is arranged thereon, is used to Locking key 30401 is installed；Second part is screw thread, for installing two No. 1 upper leading screw round nuts 30403；Part III is light Axis, for attachmentes such as the bearings of installing lead screw top；Part IV is screw portion, for carrying out cooperation biography with lead screw pair nut It is dynamic；Part V is optical axis, for attachmentes such as the bearings of installing lead screw lower part；Part VI is screw thread, for installing two No. 1 Lower leading screw round nut 30710.

The lead screw pair nut is columnar structured part, is internally provided with and matches with the screw portion of ball-screw Screw thread, one end of lead screw pair nut are provided with protruding radial boss, are evenly equipped with the bolt of installation bolt on boss along axial direction Through-hole, bolt hole are used to use bolt that lead screw pair nut is mounted on to 7 on two circular bosses on longitudinal 6 bottom face of gliding mass On number threaded hole.

Refering to Fig. 6, No. 1 lower leading screw bearing block 307 is including in 30701, No. 1 lower leading screws of spacer in No. 1 lower leading screw The lower leading screw upper end cover 30704,1 of oil sealing 30703,1 cylinder roller bearing 30705 in 30702, No. 1 lower leading screws of oil sealing pressing plate, 30708, No. 1 lower leading screws of oil sealing pressing plate under 30707, No. 1 lower leading screws of oil sealing under 30706, No. 1 lower leading screws of No. 1 lower leading screw lower cover 30709, No. 1 lower leading screw round nut 30710 and No. 1 lower leading screw pedestals 30711 of lower spacer.

Spacer 30701 is hollow revolving body ladder circle ring, spacer 30701 in No. 1 lower leading screw in No. 1 lower leading screw It is sleeved on the Part V optical axis of the ball-screw in No. 1 ball screw assembly, 306, No. 1 cylinder roller bearing 30705 is sleeved on On Part IV optical axis in No. 1 lower leading screw below spacer 30701, the upper surface of spacer 30701 and threaded shank in No. 1 lower leading screw The lower end surface for being formed by the shaft shoulder with Part V shaft diameter difference is divided to connect, the lower end of spacer 30701 in No. 1 lower leading screw Face and the upper surface of No. 1 30705 inner ring of cylinder roller bearing connect, and realize the axial direction of No. 1 cylinder roller bearing 30705 Positioning.

Oil sealing pressing plate 30702 is hollow disc-like annular structural part in No. 1 lower leading screw, in No. 1 lower leading screw Circular shape round tube hole is uniformly distributed on oil sealing pressing plate 30702 along the circumference, for using screw by oil sealing pressing plate in No. 1 lower leading screw 30702 are mounted in the circular pressing plate stepped hole on No. 1 lower leading screw upper end cover 30704.

Oil sealing 30703 is mounted on using packet matrix type sealing ring in GB/T13871.1-2007 in No. 1 lower leading screw In oil sealing annular groove on No. 1 lower leading screw upper end cover 30704.

No. 1 lower leading screw upper end cover 30704 is hollow revolving body ladder circle ring, and the center is provided with installation 1 Spacer through-hole in No. 1 lower leading screw of spacer 30701 in number lower leading screw is provided with lower silk on the outside of spacer through-hole in No. 1 lower leading screw Oil seal ring slot on thick stick is provided with for installing in No. 1 lower leading screw under oil sealing pressing plate 30702 in lower leading screw on the outside of oil seal ring slot Circular pressing plate stepped hole on lead screw is circumferentially equably disposed with lower silk on the hole bottom surface of circular pressing plate stepped hole in lower leading screw Thick stick top board screw hole, the outside of lower leading screw top board screw hole are circumferentially equably provided with lower leading screw upper end cover screw hole, For No. 1 lower leading screw upper end cover 30704 to be mounted on No. 1 lower leading screw pedestal 30711 using screw.

No. 1 cylinder roller bearing 30705, which uses, meets standard GB/T/T 283-2007 cylindrical roller axis It holds.

No. 1 lower leading screw lower cover 30706 is hollow revolving body ladder circle ring, and the center is provided with installation 1 Spacer through-hole under No. 1 lower leading screw of spacer 30709 under number lower leading screw is provided with lower silk on the outside of spacer through-hole under No. 1 lower leading screw Oil sealing annular groove under thick stick is provided with for installing under No. 1 lower leading screw under oil sealing pressing plate 30708 under lower leading screw on the outside of oil sealing annular groove Circular pressing plate stepped hole under lead screw is circumferentially equably disposed with lower silk on the hole bottom surface of circular pressing plate stepped hole under lower leading screw Thick stick lower platen screw hole, the outside of lower leading screw lower platen screw hole are circumferentially equably provided with lower leading screw lower cover screw hole, For No. 1 lower leading screw lower cover 30706 to be mounted in the lower end of No. 1 lower leading screw pedestal 30711 using screw.

Oil sealing 30707 is mounted on using packet matrix type sealing ring in GB/T13871.1-2007 under No. 1 lower leading screw Under lower leading screw on No. 1 lower leading screw lower cover 30706 in oil sealing annular groove.

Oil sealing pressing plate 30708 is hollow disc-like annular structural part under No. 1 lower leading screw, under No. 1 lower leading screw Circular shape round tube hole (sunk screw through-hole) is along the circumferential direction evenly equipped on oil sealing pressing plate 30708, for using screw by No. 1 Oil sealing pressing plate 30708 is mounted under the lower leading screw on No. 1 lower leading screw lower cover 30706 in circular pressing plate stepped hole under lower leading screw.

Spacer 30709 is hollow revolving body ladder circle ring under No. 1 lower leading screw, is used for No. 1 cylinder roller bearing 30705 axially position.

No. 1 lower leading screw round nut 30710 uses GB/T812-1988 round nut, using identical two round nuts It is mounted under No. 1 lower leading screw at the screw thread of the ball-screw Part VI in No. 1 ball screw assembly, 306 below spacer 30709.

No. 1 lower leading screw pedestal 30711 is hollow revolving body ladder circle ring, in No. 1 lower leading screw pedestal 30711 No. 1 lower leading screw lower cover 30706 of cylinder roller bearing 30705,1 of lower leading screw upper end cover 30704,1 of installation is provided at the heart Ladder hole, No. 1 30711 upper surface of lower leading screw pedestal is peripherally disposed equally distributed screw hole, No. 1 lower leading screw It is peripherally disposed on the ring flange of pedestal 30711 to have equally distributed round tube hole, for using screw by No. 1 lower leading screw bottom Seat 30711 is mounted on being distributed on the lead screw pair round boss at lead screw diagonal line both ends on test platform 1.

Refering to Fig. 7, Fig. 8 and Fig. 9, No. 1 balancing cylinder component 4 includes 401, No. 1 equilibrium oil of No. 1 equilibrium oil cylinder body Cylinder rod 402 and No. 1 balancing cylinder installation section 403.

No. 1 balancing cylinder installation section 403 includes 40301, No. 1 balancing cylinder circle of No. 1 balancing cylinder fixed plate Nut 40302.

No. 1 the provided circumferentially about of 401 flange end of equilibrium oil cylinder body has uniformly distributed round tube hole, using screw by No. 1 Equilibrium oil cylinder body 401 is mounted on No. 6 screw threads of two circular bosses for being distributed in oil cylinder diagonal line both ends on longitudinal 6 bottom surface of gliding mass Kong Shang.No. 1 equilibrium oil cylinder body 401 is equipped with oil inlet A and oil outlet B.

One end of No. 1 equilibrium oil cylinder rod 402 is put in No. 1 equilibrium oil cylinder body 401, and another end head is provided with spiral shell Line simultaneously stretches out outside No. 1 equilibrium oil cylinder body 401.

No. 1 balancing cylinder installation section 403 includes No. 1 balancing cylinder fixed plate 40301 and No. 1 balancing cylinder circle Nut 40302.

No. 1 balancing cylinder fixed plate 40301 is hollow disc-like annular structural part, and No. 1 balancing cylinder is fixed It is peripherally disposed on plate 40301 to have equally distributed round tube hole, No. 1 balancing cylinder fixed plate 40301 is pacified using screw On No. 4 threaded holes of the oil cylinder round boss for being distributed in oil cylinder diagonal line both ends on test platform 1.

No. 1 balancing cylinder round nut 40302 uses GB/T812-1988 round nut, using identical two round spiral shells Mother is mounted on from the screw thread for No. 1 402 lower end of equilibrium oil cylinder rod that No. 1 40301 bottom face of balancing cylinder fixed plate stretches out and twists Tightly, being fixedly connected for No. 1 balancing cylinder component 4 and test platform is realized.

Refering to fig. 10, the balancing cylinder oil path block 5 includes the identical balance oil circuit of balance 501,4 structures of oil path block 502,2 structures of pipe fitting, 504, No. 1 proportional direction valve 505 of identical No. 1 plug-in solenoid directional control valve.Balancing cylinder oil path block 5 work oil inlet, the oil outlet that works are connected with 4, No. 2 balancing cylinder components 15 of No. 1 balancing cylinder component respectively simultaneously, simultaneously It is controlled.

The balance oil path block 501 is the structural member of cuboid, and the bottom end of front and back side is respectively arranged with structure phase With strip mounting foot, 2 round tube holes are each provided on the identical mounting foot of the structure of 2 strips, for adopting Balancing cylinder oil path block 5 is mounted on to four No. 1 screw holes being arranged at longitudinal 6 upper surface oil cylinder diagonal line of gliding mass with screw On.

Balancing setting on the right side of oil path block 501, there are two No. 1 threaded holes, are the oil inlet P 1 and oil return opening of hydraulic power source T1；

There are four No. 2 threaded holes for right side setting in balance 501 upper surface of oil path block, set among four No. 2 threaded holes It is equipped with 4 round tube holes, the oil inlet P 2 of respectively No. 1 proportional direction valve 505, oil return inlet T 2, work oil inlet A1 and works back Hydraulic fluid port B1, wherein oil inlet P 2 is connected with oil inlet P 1, and oil return inlet T 2 is connected with oil return inlet T 1；In balance oil path block 501 There are two No. 3 threaded holes for the left side setting of upper surface, are the work oil inlet A2 and work of No. 1 plug-in solenoid directional control valve 504 Oil return opening B2, wherein the oil inlet A2 that works is connected with work oil inlet A1, work oil return opening B2 is connected with work oil return opening B1 It is logical；

The top of balance 501 left side of oil path block is provided with 2 No. 4 threaded holes, is the work of No. 1 pressure sensor 503 Make oil inlet A3 and work oil return opening B3, wherein work oil inlet A3 with work oil inlet A2 be connected, work oil return opening B3 with Work oil return opening B2 is connected；

The lower part of balance 501 left side of oil path block is provided with 2 No. 5 threaded holes, for the oil inlet for balancing oil path block 501 P3 and oil return inlet T 3, wherein oil inlet P 3 is connected with oil inlet A2, and oil return inlet T 3 is connected with work oil return opening B2, oil inlet P3, oil return inlet T 3 pass through the identical balance oil circuit pipe fitting 502 of the 2 structures oil inlet A with No. 1 equilibrium oil cylinder body 401 respectively It is connected with oil outlet B.

The balance oil circuit pipe fitting 502 is the socket-welding fitting for meeting national standard JB/T966-2005.Using 2 The identical oil circuit pipe fitting 502 that balances of a structure is mounted on No. 1 threaded hole of balance 501 right side of oil path block, then uses 2 The identical balance oil circuit pipe fitting 502 of structure is mounted on No. 5 threaded holes of balance 501 left side lower part of oil path block.

No. 1 plug-in solenoid directional control valve 504 is mounted on No. 3 threaded holes on the left of balance 501 upper surface of oil path block On.The identical No. 1 plug-in solenoid directional control valve 504 of 2 structures selects the electromagnetism of U.S. Vickers brand SBV11-12-C type to change To valve, electric wire is connected on the X111 interface of No. 2 input/output modules 21.

No. 1 proportional direction valve 505 is mounted on No. 2 threaded holes on the right side of balance 501 upper surface of oil path block, and No. 1 Proportional direction valve 505 uses the proportional direction valve of VTOZ brand MA-DHZOX series, and electric wire is connected to No. 1 input and output mould On the X3-1 interface of block 20.

Refering to fig. 1, the main body of Fig. 2, Fig. 3 and Fig. 7, longitudinal gliding mass 6 are square the four prisms cylinder of iso-cross-section The box structure of shape, with the small four prisms cylinder for being provided with square equal cross-section, quadrangular at each angle of the main body of four prisms cylinder The main body of body is parallel with the axis of symmetry of the small four prisms cylinder of four corners, and thus longitudinal gliding mass 6 is the symmetrical knot in front and rear, left and right Component, longitudinal gliding mass 6 and identical as its equipped shape of central through hole of vertical columns 2, the structure size of longitudinal gliding mass 6 is small In the structure size of the central through hole of vertical columns 2；The inside of longitudinal gliding mass 6 is equipped with horizontal and vertical gusset, can mention significantly The rigidity and intensity of high longitudinal direction gliding mass 6；It is provided centrally with a gliding mass circular through hole in longitudinal gliding mass 6, so as to servo loading Cylinder component 7 is packed into wherein, and the upper surface of longitudinal gliding mass 6, which is provided with, parallel with main wall is used to fix workpiece or industrial weight The T-slot of code 11；Be each provided at the center of symmetrical small four prisms cylinder 1 for install No. 1 balancing cylinder component 4 and The balancing cylinder round tube hole of No. 2 balancing cylinder components 15, No. 1 balancing cylinder component 4 and No. 2 balancing cylinder component 15 are mounted on it In, install No. 1 balancing cylinder component 4 balancing cylinder round tube hole inboard longitudinal gliding mass 6 upper surface setting there are four No. 1 Screw hole, for installing balancing cylinder oil path block 5；On the outside of the balancing cylinder round tube hole for installing No. 2 balancing cylinder components 15 No. 2 threaded holes of a row are provided on the lateral wall of longitudinal gliding mass 6, vertically for installing grating scale main scale 1401；

1 silk is each provided at the center of small four prisms cylinder for installing No. 1 lead screw subcomponent 3 and No. 2 lead screw subcomponent 9 Thick stick pair round tube hole is installing No. 2 lead screw subcomponents 9 so that No. 1 lead screw subcomponent 3 and No. 2 lead screw subcomponent 9 is installed therein Lead screw pair round tube hole inboard longitudinal gliding mass 6 upper surface setting there are four No. 3 threaded holes, for installing servo loading oil circuit Block assembly 10；On four wall of main body of longitudinal gliding mass 6, three slide block slots are all equably set, in opposing sidewalls on every side wall Three slide block slots relatively just, in the upper and lower ends of each slide block slot are each provided with 6 No. 4 threaded holes, for installing rolling guide Pair 8；On the bottom face of longitudinal gliding mass 6, a circle convex platform is set around the round tube hole of center, along axial direction on bulge loop platform No. 5 threaded holes are provided with, equably for installing servo loading cylinder component 7；On the bottom face of longitudinal gliding mass 6, at two 2 circle convex platforms are set around balancing cylinder round tube hole, are equably provided with No. 6 screw threads along axial direction in 2 circle convex platforms Hole, for installing No. 1 balancing cylinder component 4 and No. 2 balancing cylinder component 15；It is arranged 2 around two lead screw pair round tube holes A circle convex platform is equably provided with No. 7 threaded holes in 2 circle convex platforms along axial direction, for installing No. 1 lead screw subcomponent 3 With No. 2 lead screw subcomponents 9.

Refering to fig. 1, to Figure 22, the rolling guide-rail pairs 8 include linear guide 801 and sliding block 802 by Fig. 2, Figure 17.According to Different testing programs, the rolling guide-rail pairs 8 for selecting 2~12 root knot structures identical are installed, shown in Figure 17 to Figure 22 For wherein six kinds of testing programs.

The guide rail 801 such as is at the straight rod member of I-shaped cross section, and the spiral shell of mounting screw is equably provided on guide rail Through-hole is followed closely, the number and No. 2 threaded hole numbers in the guide rail groove bottom on 2 inner wall of vertical columns of screwing through hole are equal and mutual To just；Guide rail 801 is mounted on No. 2 threaded holes of the structure same rail slot on 2 inner hole wall of vertical columns by screw.

The sliding block 802 is the structural member for being provided with the iso-cross-section of T-shaped groove, the T-shaped groove of sliding block 802 Screwing through hole is provided on slot bottom, sliding block 802 is mounted on No. 4 screw threads of longitudinal 6 main body of gliding mass, four wall top shoe slot by screw Kong Shang.Sliding block 802 is sleeved on guide rail 801 and to be slidably connected, and thereby realizes longitudinal gliding mass 6 and does in vertical columns 2 Linear motion up and down.

No. 2 lead screw subcomponents 9 include No. 2 reducer stents 903 of retarder 902,2 of servo motor 901,2, No. 2 906, No. 2 lower leading screw bearing blocks 907 of ball screw assembly, of bearing bracket 905,2 of upper leading screw bearing block 904,2.

Lead screw subcomponent 9 and No. 1 lead screw 3 structures of subcomponent are identical, model is identical for described No. 2, mounting means is identical.

The wire and cable of No. 2 servo motors 901 is connected on the X1 interface of No. 2 single motor modules 25, No. 2 servos The signal cable of motor 901 is connected on the X202 interface of No. 2 single motor modules 25.

Balancing cylinder component 15 and No. 1 balancing cylinder 4 structures of component are identical, model is identical for described No. 2, mounting means phase Together.

2. loading system

Refering to fig. 1, Fig. 2 and Fig. 7, the loading system include servo loading cylinder component 7, servo loading oil path block 10 With technical weights 11.

The servo loading cylinder component 7 includes that servo-cylinder body 701, servo-cylinder bar 702 and servo-cylinder are installed Part 703.

It is peripherally disposed on the ring flange of described 701 one end of servo-cylinder body to have equally distributed round tube hole, it uses In No. 5 threaded holes of the central through hole circular bosses being mounted on servo-cylinder body 701 using screw on longitudinal 6 bottom face of gliding mass On, servo-cylinder body 701 is equipped with oil inlet A' and oil outlet B'.

One end of the servo-cylinder bar 702 is put in servo-cylinder body 701, and the other end stretches out servo-cylinder body 701 Outside, the head of 702 extension end of servo-cylinder bar is provided with screw thread.

Refering to Fig. 9, the servo-cylinder installation section 703 includes servo-cylinder fixed plate 70301, servo-cylinder circle spiral shell Mother 70302.

The servo-cylinder fixed plate 70301 is hollow disc-like annular structural part, servo-cylinder fixed plate 70301 It is above peripherally disposed to have equally distributed round tube hole, for servo-cylinder fixed plate 70301 to be mounted on examination using screw It tests on No. 2 threaded holes of the round boss being arranged at 1 central through hole of platform.

The servo-cylinder round nut 70302 uses GB/T812-1988 round nut, using identical two round nuts Servo-cylinder bar 702 is mounted on to stretch out at the screw thread of 70301 one end of servo-cylinder fixed plate.

Refering to fig. 11, the servo loading oil path block 10 includes the identical servo oil of 1001,4 structures of servo oil circuit block Identical No. 2 plug-in solenoid directional control valves 1004 and No. 2 proportional direction valve 1005 of 1002,2 structures of road pipe fitting.

The servo oil circuit block 1001 is the structural member of cuboid, and the bottom end of front and back side is respectively arranged with structure phase With strip mounting foot, 2 round tube holes are each provided on the identical mounting foot of the structure of 2 strips, for adopting Servo oil circuit block 1001 is mounted on four No. 3 threaded holes being arranged at longitudinal 6 upper surface lead screw diagonal line of gliding mass with screw.

There are two identical No. 1 threaded holes of structure for setting on the right side of servo oil circuit block 1001, are the oil inlet of hydraulic power source Mouth P1' and oil return inlet T 1'；

There are four No. 2 threaded holes for right side setting in 1001 upper surface of servo oil circuit block, set among four No. 2 threaded holes It is equipped with 4 round tube holes, oil inlet P 2', oil return inlet T 2', work oil inlet A1' and the work of respectively No. 2 proportional direction valves 1005 Make oil return opening B1', wherein oil inlet P 2' is connected with oil inlet P 1', and oil return inlet T 2' is connected with oil return inlet T 1'；In servo There are two No. 3 threaded holes for the left side setting of 1001 upper surface of oil path block, are the work oil inlet of No. 2 plug-in solenoid directional control valves 1004 Mouth A2' and work oil return opening B2', wherein the oil inlet A2 that works is connected with work oil inlet A1', work oil return opening B2' and work Make oil return opening B1' to be connected；

The top of 1001 left side of servo oil circuit block is provided with identical No. 4 threaded holes of 2 structures, is that No. 2 pressure pass The work oil inlet A3' and work oil return opening B3' of sensor 1003, wherein the oil inlet A3' that works is connected with work oil inlet A2' Logical, work oil return opening B3' is connected with work oil return opening B2'；

The lower part of 1001 left side of servo oil circuit block is provided with identical No. 5 threaded holes of 2 structures, is servo oil circuit block 1001 oil inlet P 3' and oil return inlet T 3', wherein oil inlet P 3' is connected with oil inlet A2', oil return inlet T 3' and work oil return Mouthful B2' is connected, oil inlet P 3', oil return inlet T 3' by the identical servo oil circuit pipe fitting 1002 of 2 structures respectively with servo The oil inlet A' of cylinder body 701 is connected with oil outlet B'.

The servo oil circuit pipe fitting 1002 is the socket-welding fitting for meeting national standard JB/T966-2005.Using The identical servo oil circuit pipe fitting 1002 of 2 structures is mounted on No. 1 threaded hole of 1001 right side of servo oil circuit block, then is used The identical servo oil circuit pipe fitting 1002 of 2 structures is mounted on No. 5 threaded holes of 1001 left side lower part of servo oil circuit block.

No. 2 plug-in solenoid directional control valves 1004 are mounted on No. 3 screw threads on the left of 1001 upper surface of servo oil circuit block Kong Shang.The identical No. 2 plug-in solenoid directional control valves 1004 of 2 structures select the electricity of U.S. Vickers brand SBV11-12-C type Magnetic reversal valve, electric wire are connected on the X111 interface of No. 2 input/output modules 21.

No. 2 proportional direction valves 1005 are mounted on No. 2 threaded holes on the right side of 1001 upper surface of servo oil circuit block, and 2 Using the proportional direction valve of VTOZ brand MA-DHZOX series, it is defeated that electric wire is connected to No. 2 inputs for number proportional direction valve 1005 Out on the X3-1 interface of module 21.

The technical weights 11 are mounted in the T-slot of longitudinal 6 upper surface of gliding mass, are wanted according to the difference of reliability test It asks, loads the technical weights 11 of different weight, for simulating true inertia load.

3. detection system

Refering to fig. 1 and Fig. 2, the detection system includes that 14,2 laser interferometer 13, grating scale structures are No. 1 identical Identical No. 2 pressure sensors 1003 of pressure sensor 503 and 2 structure.

The laser interferometer 13 is mounted on the ground on 1 side of test platform.Laser interferometer 13 uses Britain's thunder Buddhist nun continues XL-80 calibration laser interferometer, and electric wire is connected on the X3-2 interface of No. 2 input/output modules 21.

Refering to fig. 12, the grating scale 14 includes grating scale main scale 1401 and grating ruler reading head 1402, and effect is Carry out position feedback, forming position closed loop system.Grating scale 14 is using German Heidenhain brand LC400 series of straight lines grating Ruler, resolution ratio reach 0.005 μm, have excellent resetting and high-grade measurement accuracy.Grating scale main scale 1401 is installed On No. 2 threaded holes of a row of longitudinal 6 oil cylinder diagonal line side outer wall of gliding mass, grating ruler reading head 1402 is mounted on vertical columns On No. 3 threaded holes of 2 inside oil cylinder diagonal line inner sidewall.The electric wire of grating scale 14 is connected to direct measuring system 22 On X520 interface.

Identical No. 1 pressure sensor 503 of two structures is mounted on the top of balance 501 left side of oil path block On No. 4 threaded holes.No. 1 pressure sensor 503 receives P200H series shock resistance type pressure sensor using the U.S. hundred, electric wire It is connected on the X3-2 interface of No. 1 input/output module 20.

Identical No. 2 pressure sensors 1003 of two structures are mounted on the top of 1001 left side of servo oil circuit block No. 4 threaded holes on.No. 2 pressure sensors 1003 receive P200H series shock resistance type pressure sensor using the U.S. hundred, electrical Line is connected on the X3-3 interface of No. 2 input/output modules 21.

4. control system

Refering to fig. 15, control system of the present invention include station 12, Siemens's 828D system 16,24V power supply 17, Mouse 18, the input/output module 20,2 of keyboard 19,1 input/output module 21, direct measuring system 22, adjustment type power supply mould 23, No. 1 single motor module 24 and No. 2 single motor modules 25 of block；All components are all mounted on the cabinet below station 12 In.

Siemens's 828D system 16 is the core of control system, becomes one with display, is mounted on operation On the front end face on 12 top of platform.24V power supply 17, mouse 18, the input/output module of input/output module 20,2 of keyboard 19,1 21, adjustment type power module 23 respectively with Siemens's 828D system 16 be connected that (narration of the specific location of connection is below It is described respectively).

The 24V power supply 17 is mainly that Siemens 828D system 16 provides DC24V power supply, and electric wire is connected to west gate The X1 interface of sub- 828D system 16.

The mouse 18 is mounted on before station 12 on the top end face of extension, and electric wire is connected to west gate At the USB interface of sub- 828D system 16.

The keyboard 19 is mounted on before station 12 on the top end face of extension, and electric wire is connected to west gate At another USB interface of sub- 828D system 16.

No. 1 input/output module 20 uses Siemens 72/48D 2/2A PN input/output module.It will with cable Its POINT1 interface end is connected with the PN1 interface end of Siemens 828D system 16；The X3-1 interface of No. 1 input/output module 20 It is connected by electrical cable with No. 1 proportional direction valve 505, X3-2 interface passes through electrical cable and No. 1 pressure sensing Device 503 is connected.

No. 2 input/output modules 21 use Siemens 72/48D 2/2A PN input/output module.It will with cable Its POINT1 interface end is connected with the POINT2 interface end of No. 1 input/output module 20；The X3-1 of No. 2 input/output modules 21 Interface is connected by electrical cable with No. 2 proportional direction valves 1005, and X3-2 interface is dry by electrical cable and laser Interferometer 13 is connected, and X3-3 interface is connected by electrical cable with No. 2 pressure sensors 1003.

The direct measuring system 22 of described No. 1 uses the direct measuring system of Siemens SMC20, is mainly used for receiving, transmit And conversion signal, X500 interface are connected by cable with the X203 interface of No. 1 single motor module 24, X520 interface passes through Electric wire connection is connected with grating scale 14.

The adjustment type power module 23 uses Siemens ALM adjustment type power module, is mainly used for three-phase 380V Alternating current is changed into direct current, provides power for motor module, with cable by the X200 interface end of adjustment type power module 23 and The X100 interface end of Siemens's 828D system 16 is connected, and X202 interface passes through the X201 of cable and No. 1 single motor module 24 Interface is connected.

No. 1 single motor module 24 uses Siemens SMM single motor module, is mainly used for controlling the fortune of servo motor Row and speed regulation, X201 interface is connected by cable with the X202 interface of adjustment type power module 23, X202 interface and No. 2 The X201 of single motor module 25 is connected, and X203 interface passes through the X500 interface of electrical cable and No. 1 direct measuring system 22 It is connected, X1 interface is connected by motor cable with No. 1 servo motor 301.

No. 2 single motor modules 25 use Siemens SMM single motor module, are mainly used for controlling the fortune of servo motor Row and speed regulation, X201 interface are connected by cable with the X202 interface of No. 1 single motor module 24, and X1 interface passes through motor Cable is connected with No. 2 servo motors 901.

Two, the test method of the longitudinal feed system reliability test of different guide rail layouts

The longitudinal feed system reliability test method of difference guide rail layout of the present invention is using noted earlier Different guide rails layout longitudinal feed system reliability test on the basis of the method that carries out, for being tested different guide rail cloth The longitudinal feed system of office proposes a set of reliability test method.

Refering to fig. 16, the step of longitudinal feed system reliability test method of different guide rails layouts, is as follows:

1. reliability test prepares

1) testing program is formulated, determines the layout type of guide rail quantity and guide rail；

2) keeping test ambient temperature constant is 20 ± 5 degrees Celsius, the longitudinal feed system reliability of different guide rail layouts Experimental rig places the time greater than 12 hours in experimental enviroment；

2. reliability no-load test

1) start automatic control program, reliability no-load test starts timing；

2) power output of servo loading cylinder component 7 is set in the controls as 0；Work is not provided on longitudinal gliding mass 6 The longitudinal feed system of industry counterweight 11, i.e., different guide rail layouts is no-load condition；

3) according to the test procedure of setting, existed using the longitudinal feed system that laser interferometer 13 detects different guide rail layouts Positioning accuracy and repetitive positioning accuracy under light condition；

4) the precision index allowable tolerance of the longitudinal feed system of different guide rail layouts is determined；

3. reliability load test

1) start automatic control program, reliability load test starts timing；

2) loading force and Loaded contact analysis of servo loading cylinder component 7 are set in the controls, and Loaded contact analysis mainly wraps Include straight wave, trapezoidal wave, sine wave, triangular wave, square wave and random wave etc.；

3) technical weights 11 needed for placing test requirements document on longitudinal gliding mass 6, for simulating true inertia load；

4) according to the test procedure of setting, longitudinal reciprocation cycle between effective travel of gliding mass 6 passes through laser interferometer 13 The positioning accuracy and repetitive positioning accuracy and real-time Transmission for measuring longitudinal gliding mass 6 are to Siemens's 828D system 16；

5) data that Siemens 828D system 16 is detected using laser interferometer 13, the actual location of longitudinal gliding mass 6 Precision, repetitive positioning accuracy are compared with positioning accuracy that control system is set, repetitive positioning accuracy allowable tolerance, if actual value It is greater than the set value, then determines the synchronous driving servo feed system precision failure of the double lead-screw, be denoted as a precision failure of removal；

6) control system also recording control system is alarmed, oil cylinder damage, lead screw abrasion, Hydraulic Elements damage, oil pressure is insufficient, The failure of oil leak；If after breaking down, stop this reliability test, and record this time test continuous no-failure operation Between；

7) after the longitudinal feed system of different guide rail layouts breaks down, then stop this reliability test, control system Calculate this time continuous time between failures of test；If after reaching with the time of fixed time test, different guide rail layouts There are not precision failure or other failures yet in longitudinal feed system, stops this reliability test yet；

8) according to the loading force and Loaded contact analysis of setting different servo load cylinder component 7, above-mentioned 1) -7 are repeated) step Suddenly；

4. reliability test comparative analysis

1) the fault data processing for statistical analysis after the completion of reliability test, to test acquisition.According to test number According to calculating point estimation and the interval estimation of distribution parameter, and then obtain average time between failures (MTBF), average catastrophe failure Point estimation and the interval estimation of interval time (MTBCF) and reliability, analysis are tested the length feed system of different guide rail layouts The reliability level of system.

2) in reliability test, in addition to the layout type of different guide rail quantity and guide rail, remaining alternative condition is kept Under unanimous circumstances, can more different guide rails layout longitudinal feed system reliability height.

3) during reliability test, if there is control system alarm, oil cylinder damage, lead screw abrasion, Hydraulic Elements When damage, oil pressure deficiency, the failure of oil leak, then it should stop testing immediately, analyze failure Producing reason, and to different guide rail cloth The longitudinal feed system reliability test of office improves.

Heretofore described embodiment is for the ease of field technical staff it will be appreciated that and with the application of the invention, this hair A kind of example of bright only optimization, or perhaps a kind of preferable specific technical solution.If relevant technical staff is adhering to In the case where basic technical scheme of the present invention, the equivalent structure variation for needing not move through creative work or various modifications are made all Within the scope of the present invention.

Claims

1. a kind of longitudinal feed system reliability test of difference guide rail layout, which is characterized in that the different guide rails The longitudinal feed system reliability test of layout includes longitudinal feed system, loading system, detection system and control system；

The longitudinal feed system includes test platform (1), vertical columns (2), balancing cylinder oil path block (5), longitudinal gliding mass (6) rolling guide-rail pairs (8) identical with 2~12 structures；

The loading system includes servo loading cylinder component (7), servo loading oil path block (10) and technical weights (11)；

The detection system includes laser interferometer (13), grating scale (14), No. 1 pressure sensor (503), No. 2 pressure biographies Sensor (1003)；

The test platform (1) is mounted on horizontal ground, and vertical columns (2) are mounted on test platform (1) and use Bolt is fixedly connected, and longitudinal gliding mass (6) is fitted into the inner hole of vertical columns (2), the identical rolling guide-rail pairs of 2~12 structures (8) it is symmetrically mounted between longitudinal gliding mass (6) and vertical columns (2) to be slidably connected；Servo loading cylinder component (7) installation Servo-cylinder body (701) peace in the gliding mass circular through hole at longitudinal gliding mass (6) center, in servo loading cylinder component (7) On longitudinal gliding mass (6), the extension end and test platform (1) of the servo-cylinder bar (702) in servo loading cylinder component (7) On central through hole connection, servo loading oil path block (10) and technical weights (11) are mounted on the top end face of longitudinal gliding mass (6), Piping connection is used between servo loading cylinder component (7) and servo loading oil path block (10)；Laser interferometer (13) is mounted on It tests on the ground of platform (1) lower right side, grating scale (14) is mounted between longitudinal gliding mass (6) and vertical columns (2), No. 1 pressure Force snesor (503), No. 2 pressure sensors (1003) are separately mounted to balancing cylinder oil path block (5) and servo loading oil path block (10) on；Control system is mounted on and is tested on the ground on the right side of platform (1) by station therein (12), control system respectively and Longitudinal feed system, loading system and detection system electric wire connect.

2. the longitudinal feed system reliability test of difference guide rail layout described in accordance with the claim 1, which is characterized in that The longitudinal feed system further includes No. 1 lead screw subcomponent (3), No. 2 lead screw subcomponents (9), No. 1 balancing cylinder component (4) With No. 2 balancing cylinder components (15)；

No. 1 lead screw subcomponent (3) includes No. 1 ball screw assembly, (306), No. 1 lower leading screw bearing block (307)；Wherein: 1 Number ball screw assembly, (306) includes ball-screw and lead screw pair nut；

No. 1 lead screw subcomponent (3) is identical as No. 2 lead screw subcomponent (9) structures, is symmetrically mounted at and is symmetrically disposed in In lead screw pair round tube hole at the small four prisms cylinder center at longitudinal gliding mass (6) both ends, lead screw pair nut is fixed on vertical using screw On circular bosses on gliding mass (6) bottom surface, the extension end of ball-screw is fixed on test using No. 1 lower leading screw bearing block (307) On lead screw pair round boss on platform (1)；

No. 1 balancing cylinder component (4) includes that No. 1 equilibrium oil cylinder body (401), No. 1 equilibrium oil cylinder rod (402) and No. 1 are flat It weighs oil cylinder installation section (403)；

No. 1 balancing cylinder component (4) is identical as No. 2 balancing cylinder component (15) structures, is symmetrically mounted at symmetrically It is arranged in the balancing cylinder round tube hole at longitudinal gliding mass (6) the in addition small four prisms cylinder center at both ends, No. 1 equilibrium oil cylinder body (401) it is fixed on the circular bosses on longitudinal gliding mass (6) bottom surface using screw, the extension end of No. 1 equilibrium oil cylinder rod (402) passes through No. 1 balancing cylinder installation section (403) is fixed on the oil cylinder round boss on test platform (1).

3. the longitudinal feed system reliability test of different guide rail layouts according to claim 2, which is characterized in that No. 1 lead screw subcomponent (3) further includes No. 1 servo motor (301), No. 1 retarder (302), No. 1 reducer stent (303), No. 1 upper leading screw bearing block (304) and No. 1 bearing bracket (305)；

No. 1 upper leading screw bearing block (304) is mounted on No. 1 bearing bracket by No. 1 bearing base (30408) therein (305) it is fixedly connected in the bracket large through-hole of roof and using screw, No. 1 reducer stent (303) is mounted on No. 1 upper leading screw axis The top of seat (304) is held, the bottom end of No. 1 reducer stent (303) is fixedly connected using screw with No. 1 bearing base (30408), The top that No. 1 retarder (302) is mounted on No. 1 reducer stent (303) is fixedly connected using screw, No. 1 servo motor (301) Output shaft is inserted into the right center hole of No. 1 retarder (302), realizes rigid connection between the two, and be mounted on 1 using screw On circular mounting plate on the right side of number retarder (302)；Ball-screw in No. 1 ball screw assembly, (306) is packed into No. 1 upper leading screw axis It holds in seat (304), to roll connection between ball-screw and No. 1 upper leading screw bearing block (304), the upper end of ball-screw uses 1 Number locking key (30401) is connect with No. 1 decelerator connection shaft (30402) in No. 1 upper leading screw bearing block (304), No. 1 retarder In inner circle seam allowance that connecting shaft (30402) is mounted on No. 1 retarder (302) bottom face and adopts and be screwed, ball-screw Lower end be fixedly connected with No. 1 lower leading screw bearing block (307) using No. 1 lower leading screw round nut (30710), No. 1 lower leading screw bearing Seat (307) is by being arranged in lead screw diagonal line one end on No. 1 lower leading screw pedestal (30711) therein and test platform (1) Lead screw pair circle convex platform is fixedly connected, bracket large through-hole, No. 1 upper leading screw bearing block of No. 1 bearing bracket (305) roof (304), No. 1 reducer stent (303), No. 1 retarder (302), No. 1 ball screw assembly, (306) and No. 1 lower leading screw bearing block (307) rotation conllinear.

4. the longitudinal feed system reliability test of difference guide rail layout described in accordance with the claim 1, which is characterized in that The test platform (1) be using the symmetrical board-like hollow structural members of eight ribs body in front and rear, left and right made of monoblock cast mode, The staggered reinforcing rib of the internal reasonable Arrangement transverse and longitudinal of test platform (1), in test platform (1) bottom, surrounding is equably provided with structure Identical Niche type lower margin is fixedly connected, and Niche type lower margin fixed connection structure is interior horizontal cuboid space, in its bottom surface On be drilled with a through-hole, test platform (1) is fixed on ground with screw；Test platform (1) surrounding along the vertical direction It is equably provided with No. 1 screwing through hole of installation vertical columns (2), a center circle is set at the center of test platform (1) A round ring boss, edge and center round tube hole axis on round ring boss are arranged around the upper aperture of center round tube hole for through-hole The parallel direction of line is equably provided with No. 2 threaded holes of installation servo-cylinder fixed plate (70301), in test platform (1) On one it is identical with two structures are symmetrically arranged on the line of symmetry that the lead screw diagonal line of vertical columns (2) inner hole coincides A lead screw pair round ring boss is respectively set around the upper aperture of identical No. 2 round tube holes of two structures in No. 2 round tube holes, No. 3 threaded holes of No. 1 lower leading screw pedestal (30711) of installation are equably provided on round ring boss along axial direction；In test platform (1) another it is identical with two structures are symmetrically arranged on the line of symmetry that the oil cylinder diagonal line of vertical columns (2) inner hole coincides No. 3 round tube holes, an oil cylinder round ring boss is respectively set around the upper aperture of identical No. 3 round tube holes of two structures, No. 1 balancing cylinder being equably arranged in installation longitudinal feed system on oil cylinder round ring boss along the axial direction of No. 3 round tube holes is solid No. 4 threaded holes of fixed board (40301).

5. the longitudinal feed system reliability test of difference guide rail layout described in accordance with the claim 1, which is characterized in that The vertical columns (2) are the symmetrical hollow eight ribs body in front and rear, left and right using iso-cross-section made of monoblock cast mode Shape structural member, is set as regular quadrangle through-hole inside center, and four corners are provided with the identical rectangular through-hole of structure, and four The position of the regular quadrangle through-hole at rectangular through-hole and center at angle is arranged symmetrically for left and right, front and back, vertical columns (2) column jacket It is evenly provided with horizontal and vertical gusset between wall and inner hole wall, is provided on vertical columns (2) outer post jamb and lateral gusset The through-hole of back gauge；

In vertical columns (2) bottom, surrounding is equably provided with structure identical Niche type cuboid space, in each alcove The vertical through-hole for mounting screw is provided on the bottom surface of formula cuboid space；It is logical in vertical columns (2) regular quadrangle No. 1 lead screw subcomponent (3) in installation longitudinal feed system is symmetrically provided on the upper surface at the lead screw diagonal line both ends in hole Two rows of No. 1 threaded holes；Structure there are three being arranged respectively on four hole walls of vertical columns (2) regular quadrangle through-hole symmetrically Identical vertical guide-track groove is equably provided with to roll in installation longitudinal feed system in the groove bottom of each guide-track groove and lead No. 2 threaded holes of guide rail (801) in rail pair (8)；In installation oil cylinder diagonal line one end of vertical columns (2) regular quadrangle through-hole No. 3 threaded holes of grating ruler reading head (1402) in installation grating scale (14) are provided on rectangular through-hole inner sidewall.

6. the longitudinal feed system reliability test of difference guide rail layout described in accordance with the claim 1, which is characterized in that The main body of longitudinal gliding mass (6) is square the box structure of the quadrangular bodily form of iso-cross-section, the master of four prisms cylinder The identical small four prisms cylinder of structure of square equal cross-section is provided at each angle of body, longitudinal gliding mass (6) is that front and rear, left and right is opposite The structural member of title, longitudinal gliding mass (6) and, longitudinal gliding mass (6) identical as the shape of central through hole of its equipped vertical columns (2) Structure size be less than vertical columns (2) central through hole structure size；The inside of longitudinal gliding mass (6) is equipped with horizontal and vertical Gusset；It is provided centrally with the gliding mass circular through hole for being used to install servo loading cylinder component (7) in longitudinal gliding mass (6), The upper surface of longitudinal gliding mass (6) is provided with the T-slot that is used to fix workpiece or technical weights (11) parallel with main wall；? Be each provided at the center of symmetrical small four prisms cylinder 1 for install No. 1 balancing cylinder component (4) and No. 2 balancing cylinders The balancing cylinder round tube hole of component (15) is sliding in the inboard longitudinal direction of the balancing cylinder round tube hole of No. 1 balancing cylinder component (4) of installation It is identical for installing No. 1 screw hole of balancing cylinder oil path block (5) that the upper surface of body (6) is provided with 4 structures；In installation 2 A row is vertically provided on the lateral wall of longitudinal gliding mass (6) on the outside of the balancing cylinder round tube hole of number balancing cylinder component (15) For installing No. 2 threaded holes of grating scale main scale (1401)；

1 silk is each provided at the center of the small four prisms cylinder of No. 1 lead screw subcomponent (3) of installation and No. 2 lead screw subcomponents (9) Thick stick pair round tube hole is arranged in the upper surface of the longitudinal gliding mass (6) for the lead screw pair round tube hole inboard for installing No. 2 lead screw subcomponents (9) There are 4 structures identical for installing No. 3 threaded holes of servo loading oil path block (10)；In four wall of main body of longitudinal gliding mass (6) On, three slide block slots are all equably set on every side wall, three slide block slots in opposing sidewalls relatively just, in each slide block slot Upper and lower ends are each provided with 6 for installing No. 4 threaded holes of rolling guide-rail pairs (8)；On the bottom face of longitudinal gliding mass (6), One No. 1 circle convex platform is set around the round tube hole of center, is equably provided with along axial direction for pacifying in No. 1 circle convex platform No. 5 threaded holes for filling servo loading cylinder component (7), on the bottom face of longitudinal gliding mass (6), in two balancing cylinder round tube holes Around the identical balance circle convex platform of 2 structures of setting, be equably provided in 2 balance circle convex platforms along axial direction for No. 6 threaded holes of No. 1 balancing cylinder component (4) Yu No. 2 balancing cylinder components (15) are installed；In the week of 2 lead screw pair round tube holes 2 lead screw pair circle convex platforms of setting are enclosed, are equably provided with along axial direction for installing No. 1 silk in 2 lead screw pair circle convex platforms No. 7 threaded holes of thick stick subcomponent (3) and No. 2 lead screw subcomponents (9).

7. the longitudinal feed system reliability test of difference guide rail layout described in accordance with the claim 1, which is characterized in that The balancing cylinder oil path block (5) includes balance oil path block (501), the identical balance oil circuit pipe fitting (502) of 4 structures, 2 A identical No. 1 plug-in solenoid directional control valve (504) of structure and No. 1 proportional direction valve (505)；Balancing cylinder oil path block (5) Work oil inlet, work oil outlet are connected with No. 1 balancing cylinder component (4), No. 2 balancing cylinder components (15) respectively simultaneously；

The balance oil path block (501) is the structural member of cuboid, and it is identical that the bottom end of front and back side is respectively arranged with structure Strip mounting foot, 2 circles for mounting screw are each provided on the identical mounting foot of the structure of 2 strips Through-hole；

Balancing setting on the right side of oil path block (501), there are two No. 1 threaded holes, are the oil inlet P 1 and oil return opening of hydraulic power source T1；

There are four No. 2 threaded holes for right side setting in balance oil path block (501) upper surface, are provided among 4 No. 2 threaded holes 4 round tube holes, oil inlet P 2, oil return inlet T 2, work oil inlet A1 and the work oil return of respectively No. 1 proportional direction valve (505) Mouth B1, wherein oil inlet P 2 is connected with oil inlet P 1, and oil return inlet T 2 is connected with oil return inlet T 1；In balance oil path block (501) There are two No. 3 threaded holes for the left side setting of upper surface, are the work oil inlet A2 and work of No. 1 plug-in solenoid directional control valve (504) Make oil return opening B2, wherein the oil inlet A2 that works is connected with work oil inlet A1, work oil return opening B2 and work oil return opening B1 phase Connection；

The top of balance oil path block (501) left side is provided with 2 No. 4 threaded holes, is No. 1 pressure sensing in detection system The work oil inlet A3 and work oil return opening B3 of device (503) work wherein the oil inlet A3 that works is connected with work oil inlet A2 Oil return opening B3 is connected with work oil return opening B2；The lower part of balance oil path block (501) left side is provided with 2 No. 5 threaded holes, For balance oil path block (501) oil inlet P 3 and oil return inlet T 3, wherein oil inlet P 3 is connected with oil inlet A2, oil return inlet T 3 and Work oil return opening B2 is connected, oil inlet P 3, oil return inlet T 3 the oil inlet A and oil outlet with No. 1 equilibrium oil cylinder body (401) respectively B is connected.

8. the longitudinal feed system reliability test of difference guide rail layout described in accordance with the claim 1, which is characterized in that The control system connects and refers to longitudinal feed system, loading system and detection system electric wire respectively:

The X1 interface of No. 1 single motor module (24) is connected by motor cable with No. 1 servo motor (301)；

The X1 interface of No. 2 single motor modules (25) is connected using motor cable with No. 2 servo motors (901)；

No. 1 plug-in solenoid directional control valve (504) is mounted on No. 3 threaded holes on the left of balance oil path block (501) upper surface On, electric wire is connected on the X111 interface of No. 1 input/output module (20)；

No. 1 proportional direction valve (505) is mounted on No. 2 threaded holes on the right side of balance oil path block (501) upper surface, electricity Gas line is connected on the X3-1 interface of No. 1 input/output module (20)；

No. 2 plug-in solenoid directional control valves (1004) are mounted on No. 3 screw threads on the left of servo oil circuit block (1001) upper surface Kong Shang, electric wire are connected on the X111 interface of No. 2 input/output modules (21)；

No. 2 proportional direction valves (1005) are mounted on No. 2 threaded holes on the right side of servo oil circuit block (1001) upper surface, Electric wire is connected on the X3-1 interface of No. 2 input/output modules (21)；

The laser interferometer (13) using Britain's Reinshaw XL-80 calibrate laser interferometer, electric wire be connected to No. 2 it is defeated On the X3-2 interface for entering output module (21)；

The electric wire of the grating scale (14) is connected on the X520 interface of direct measuring system (22)；

Identical No. 1 pressure sensor (503) of two structures is mounted on the top of balance oil path block (501) left side On No. 4 threaded holes, electric wire is connected on the X3-2 interface of No. 1 input/output module (20)；

Identical No. 2 pressure sensors (1003) of two structures are mounted on the top of servo oil circuit block (1001) left side No. 4 threaded holes on, electric wire is connected on the X3-3 interface of No. 2 input/output modules (21).

9. the longitudinal feed system reliability test of difference guide rail layout described in accordance with the claim 1, which is characterized in that The control system includes station shell (12), Siemens's 828D system (16), 24V power supply (17), mouse (18), keyboard (19), No. 1 input/output module (20), No. 2 input/output modules (21), direct measuring system (22), adjustment type power module (23), No. 1 single motor module (24) and No. 2 single motor modules (25)；

The 24V power supply (17) is connected using electric wire with the X1 interface of Siemens's 828D system (16)；

The mouse-keyboard (18) is mounted on the upper surface of extension before station (12), and mouse-keyboard (18) uses Electric wire is connected with the USB interface of Siemens's 828D system (16)；

The keyboard (19) is mounted on the upper surface of extension before station (12), keyboard (19) using electric wire with The USB interface of Siemens's 828D system (16) is connected；

No. 1 input/output module (20) is using cable by its POINT1 interface end and Siemens's 828D system (16) PN1 interface end is connected；

No. 2 input/output modules (21) are using cable by its POINT1 interface end and No. 1 input/output module (20) POINT2 interface end is connected；

The X500 interface of the direct measuring system (22) of described No. 1 uses the X203 interface of cable and No. 1 single motor module (24) It is connected；

The X200 interface end of the adjustment type power module (23) is connect using the X100 of cable and Siemens's 828D system (16) Mouth end is connected；

The X201 interface of No. 1 single motor module (24) uses the X202 interface phase of cable and adjustment type power module (23) Connection, the X202 interface of No. 1 single motor module (24) are connected with the X201 of No. 2 single motor modules (25), No. 1 single motor module (24) X203 interface is connected by electrical cable with the X500 interface of No. 1 direct measuring system (22), No. 1 single motor mould The X1 interface of block (24) is connected by motor cable with No. 1 servo motor (301)；

The X201 interface of No. 2 single motor modules (25) uses the X202 interface phase of cable and No. 1 single motor module (24) The X1 interface of connection, No. 2 single motor modules (25) is connected by motor cable with No. 2 servo motors (901).

10. a kind of test of the longitudinal feed system reliability test using different guide rail layouts described in claim 1 Method, which is characterized in that the step of the test method of the longitudinal feed system reliability test of the different guide rails layout It is rapid as follows:

1) reliability test prepares

(2) keeping test ambient temperature constant is 20 ± 5 degrees Celsius, the longitudinal feed system reliability test of different guide rail layouts Device places the time greater than 12 hours in experimental enviroment；

2) reliability no-load test

(1) start automatic control program, reliability no-load test starts timing；

(2) power output of servo loading cylinder component (7) is set in the controls as 0；Work is not provided on longitudinal gliding mass (6) The longitudinal feed system of industry counterweight (11), i.e., different guide rail layouts is no-load condition；

(3) according to the test procedure of setting, existed using the longitudinal feed system that laser interferometer (13) detect different guide rail layouts Positioning accuracy and repetitive positioning accuracy under light condition；

3) reliability load test；

4) reliability test comparative analysis

(1) the fault data processing for statistical analysis after the completion of reliability test, to test acquisition.According to test data, Point estimation and the interval estimation of distribution parameter are calculated, and then obtains average time between failures, Mean Time Between Critical Failure Point estimation and interval estimation with reliability, analysis are tested the reliability level of the longitudinal feed system of different guide rail layouts；

(2) in reliability test, in addition to the layout type of different guide rail quantity and guide rail, remaining alternative condition is consistent In the case where, can more different guide rails layout longitudinal feed system reliability height；

(3) it during reliability test, is damaged if there is control system alarm, oil cylinder damage, lead screw abrasion, Hydraulic Elements It is bad, oil pressure is insufficient, the failure of oil leak when, then should stop testing immediately, analyze failure Producing reason, and to different guide rails be laid out Longitudinal feed system reliability test improve.

11. the test side of the longitudinal feed system reliability test of different guide rail layouts according to claim 10 Method, which is characterized in that the reliability load test refers to:

(1) start automatic control program, reliability load test starts timing；

(2) loading force and Loaded contact analysis of servo loading cylinder component (7) are set in the controls, and Loaded contact analysis mainly includes Straight wave, trapezoidal wave, sine wave, triangular wave, square wave and random wave etc.；

(3) technical weights (11) needed for placing test requirements document on longitudinal gliding mass (6), for simulating true inertia load；

(4) according to the test procedure of setting, longitudinal gliding mass (6) reciprocation cycle between effective travel passes through laser interferometer (13) positioning accuracy and repetitive positioning accuracy and real-time Transmission for measuring longitudinal gliding mass (6) are to Siemens's 828D system (16)；

(5) data that Siemens 828D system (16) utilizes laser interferometer (13) to detect, the reality longitudinal gliding mass (6) are fixed Position precision, repetitive positioning accuracy are compared with positioning accuracy that control system set, repetitive positioning accuracy allowable tolerance, if actually Value is greater than the set value, then determines the synchronous driving servo feed system precision failure of the double lead-screw, be denoted as a precision failure of removal；

(6) control system also recording control system alarm, oil cylinder damage, lead screw abrasion, Hydraulic Elements damage, oil pressure deficiency, leakage The failure of oil；If after breaking down, stopping this reliability test, and record this time continuous time between failures of test；

(7) after the longitudinal feed system of different guide rail layouts breaks down, then stop this reliability test, control system calculates Continuous time between failures are this time tested out；If after reaching with the time of fixed time test, the longitudinal direction of different guide rail layouts There are not precision failure or other failures yet in feed system, stops this reliability test yet；

(8) according to the loading force and Loaded contact analysis of setting different servo load cylinder component (7), above-mentioned (1)-(7) step is repeated.