CN201788095U - Numerical control turret head reliability test system having electro-hydraulic servo loading device - Google Patents
Numerical control turret head reliability test system having electro-hydraulic servo loading device Download PDFInfo
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- CN201788095U CN201788095U CN201020537849XU CN201020537849U CN201788095U CN 201788095 U CN201788095 U CN 201788095U CN 201020537849X U CN201020537849X U CN 201020537849XU CN 201020537849 U CN201020537849 U CN 201020537849U CN 201788095 U CN201788095 U CN 201788095U
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Abstract
The utility model discloses a numerical control turret head reliability test system having an electro-hydraulic servo loading device, aimed at solving a problem that the prior device cannot simulate a real cutting force to perform loading test on the numerical control turret head. The numerical control turret head reliability test system having the electro-hydraulic servo loading device is composed of a pump station, a hydraulic loading mechanism (I), a numerical control turret head control part (II) and an electro-hydraulic servo loading control part (III). The hydraulic loading mechanism (I) comprises a stress application lever (3) and an oil cylinder (16); the numerical control turret head control part (II) comprises a programmable controller (20); and the electro-hydraulic servo loading control part (III) comprises a pressure sensor (4), a displacement sensor (8) and an electro-hydraulic servo valve (17). The hydraulic loading mechanism (I) and the numerical control turret head control part (II) are both installed on a working platform (18). The electro-hydraulic servo loading control part (III) is installed on an external wall of the oil cylinder (16), and the electro-hydraulic servo loading control part (III) and the oil cylinder (16) are both connected with a pipeline of the pump station.
Description
Technical field
The utility model relates to a kind of reliability test system of numerically-controlled machine numerical control turret knife rest, particularly relates to a kind of numerical control turret knife rest reliability test system with electro-hydraulic servo charger.
Background technology
Fast development along with equipment manufacture, China has become the rich and influential family of numerically-controlled machine production and application, research according to investigations, the domestic numerical control lathe still has very big gap at aspects such as q﹠rs compared with developed countries, has limited to the level and the ability of China's equipment manufacture thus.Numerically-controlled slide is the key feature of numerically-controlled machine, its reliability level has key effect to the reliability raising of complete machine, reliability consideration to numerically-controlled slide need be based on fault data, but the on-the-spot tracking test of knife rest is wasted time and energy, and is difficult to obtain a large amount of fault datas in the short time again.Based on self handling characteristics of knife rest, can carry out continuous fail-test to it separately, the test efficiency height uses manpower and material resources sparingly, and this just needs a kind of reliability test system at knife rest.
The fail-test of domestic relevant numerically-controlled machine is started late, the simple numerical control turret knife rest of some functions testing table is arranged, this testing table can only carry out continuous operation test under the no-load condition to the numerical control turret, on the cutterhead of numerical control turret knife rest, increase weighting block when perhaps testing, what the weight difference tool setting dish of different cutters produced under the simulation truth lays particular stress on, even but like this, still there is a big difference for the working environment of test simulation and numerical control turret knife rest real work situation, under the real work situation, cutter is subjected to dynamic cutting force during cutting, its indirectly-acting is on the cutterhead of numerical control turret knife rest, this factor has a significant impact the life-span and the reliability of numerical control turret, and existing testing equipment all can not simulation cutting power carry out load test to the numerical control turret.This pilot system has increased the dynamic and static loading structure of the multi-angle of numerical control turret on traditional numerical control turret knife rest transposition experimental basis, has remedied the deficiency of existing testing equipment, compared with prior art, has significant creativeness and progressive.
Summary of the invention
Technical problem to be solved in the utility model is that the reliability-test equipment that has overcome present numerical control turret knife rest can not be simulated dynamic cutting force carries out load test to the numerical control turret problem, a kind of numerically-controlled machine numerical control turret knife rest reliability test system is provided, a kind of reliability test system with numerically-controlled machine numerical control turret knife rest of electro-hydraulic servo charger particularly is provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: described numerical control turret knife rest reliability test system with electro-hydraulic servo charger partly is made up of pumping plant, hydraulic loaded mechanism, numerical control turret knife rest control section and electro-hydraulic servo Loading Control.Described hydraulic loaded mechanism comprises boosting-rod, keeps spring, bent plate, slide plate, base, rotating shaft, rotating shaft slide plate, oil cylinder retainer, oil cylinder and worktable.
Base is installed in the right-hand member of worktable by bolt, slide plate by T shape screw retention on base, bent plate by T shape screw retention on slide plate, in the right spindle in the rotating shaft and the bent plate vertically the through hole on the installing plate be rotationally connected and then lock by means of bolt.After being rotationally connected, through hole in horizontal rotating shaft on the rotating shaft slide plate and the rotating shaft on the left rectangular slab locks by means of bolt.The oil cylinder retainer is connected on the rotating shaft slide plate by T type screw, the upper end of oil cylinder is connected with the oil cylinder retainer, being separately installed with the maintenance spring between the both sides of the lower end of oil cylinder and the oil cylinder retainer, fixedlys connected with boosting-rod one end by the pressure transducer in the electro-hydraulic servo Loading Control part in the end of the piston rod of oil cylinder lower end.
The upper end of the oil cylinder described in the technical scheme is connected with the oil cylinder retainer and is meant: a upper end cover is fixed by four double-screw bolts in the top of oil cylinder, and the upper end cover of oil cylinder top is hinged on the oil cylinder retainer by oscillating bearing.Fix a linear axis between upper end cover and oil cylinder upper surface, the axis of symmetry of linear axis is parallel with the axis of symmetry of oil cylinder piston bar.Slidely connecting box linear bearing on the linear axis, fixedlys connected in an end of box linear bearing and the end of piston rod, and the inner core of the displacement transducer in the other end of box linear bearing and the electro-hydraulic servo Loading Control part is fixedlyed connected; Described rotating shaft is formed one successively by right spindle, circular flange dish and left rectangular slab, the axis of symmetry conllinear of right spindle, circular flange dish and left rectangular slab.Be evenly equipped with four sections annular through groove that are used to pass bolt on the circular flange dish, the center of left rectangular slab is provided with a through hole, is evenly equipped with three sections annular through groove that are used to pass bolt around this through hole; Described rotating shaft slide plate is an elongated plates class formation spare.Be provided with 2 T-slots on the front end face of rotating shaft slide plate from top to bottom, the lower end of the rear end face of rotating shaft slide plate is provided with a horizontal rotating shaft, and promptly the rotational symmetry line of horizontal rotating shaft is vertical with the front and rear end of rotating shaft slide plate.Be provided with in three and the rotating shaft three sections corresponding threaded holes of annular through groove on the left rectangular slab around the horizontal rotating shaft; Described oil cylinder retainer is a strip case structure spare, promptly is made of a base plate, a top board left plate and a right plate identical with two block structures.The right plate that left plate, top board and structure are identical is fixed on the base plate front end face from left, last and right three faces, and the lower end of oil cylinder retainer is opened wide.Be evenly equipped with two on the base plate and arrange the through hole that passes bolt, the distance between 2 T-slots on distance between two exhausting holes and the rotating shaft nose face equates; Described numerical control turret knife rest control section comprises upper industrial computer, Programmable Logic Controller, solenoid directional control valve and Simulated Arbor.The up direction of Programmable Logic Controller is electrically connected with upper industrial computer.The down direction of Programmable Logic Controller is electrically connected with solenoid directional control valve with saddle controller respectively.Servo motor power supply interface on the down direction of saddle controller and the numerical control turret knife rest to be measured is electrically connected with the servomotor encoder interfaces.The P mouth of solenoid directional control valve is connected with the oil return opening pipeline with the oil-feed port of pumping plant respectively with the T mouth.The control port A mouth of solenoid directional control valve and control port B respectively with numerical control turret knife rest to be measured on locking with unclamp cylinder pipe and be connected.Simulated Arbor is installed on the cutterhead of numerical control turret knife rest to be measured; The up direction of described Programmable Logic Controller is electrically connected with upper industrial computer, and the down direction of Programmable Logic Controller is electrically connected with solenoid directional control valve with saddle controller respectively and is meant: the up direction of Programmable Logic Controller is connected with the RS-232C port serial ports of upper industrial computer by built-in RS-232C port.6 input points in the Programmable Logic Controller down direction are connected with 1 location end signal output point on the saddle controller respectively, 4 current station feedback signal output points connections are connected with 1 knife rest alerting signal output point.Also have 2 input points respectively with the numerical control turret knife rest on the sensor that unclamps be connected with the lock sensor interface.7 output points in the Programmable Logic Controller down direction respectively with saddle controller on 4 station signals, 2 mode of operation signals be electrically connected with 1 enabling signal input point.Also have 2 output points to be connected with unclamping of solenoid directional control valve with the locking power interface; Described electro-hydraulic servo Loading Control partly comprises upper industrial computer, No. 1 A/D card, No. 1 signal amplifier, servoamplifier, D/A card, No. 2 signal amplifiers, No. 2 A/D cards, pressure transducer, displacement transducer and electrohydraulic servo valves.The oil-feed port P of electrohydraulic servo valve is connected with the oil return opening pipeline with the oil-feed port of pumping plant respectively with oil return inlet T, and the control port A of electrohydraulic servo valve is connected with the upper and lower oil pocket pipeline of oil cylinder respectively with control port B.4 core electrical outlets on the electrohydraulic servo valve are connected with servoamplifier by shielding line, are electrically connected with upper industrial computer (19) through the D/A card.Displacement transducer is connected with No. 1 signal amplifier by shielding line, is electrically connected with upper industrial computer through No. 1 A/D card.Pressure transducer is connected with No. 2 signal amplifiers by shielding line, is electrically connected with upper industrial computer through No. 2 A/D cards.
Compared with prior art the beneficial effects of the utility model are:
1. the numerical control turret knife rest reliability test system with electro-hydraulic servo charger described in the utility model is compared with existing testing equipment, this pilot system is taken into account cutting force under the real work environment to this factor of material impact that numerical control turret reliability produces, hydraulic loaded mechanism and control system thereof have been increased innovatively, content of the test not only comprises the transposition of numerical control turret knife rest, the location, clamp, and added moving, static loading procedure, simulate the cutting force that the numerical control turret knife rest is subjected in the true working angles, hydraulic loaded mechanism can also carry out the adjusting of position and angle, thereby can further simulate each loading angle of numerical control turret knife rest, on multi-angle, can move it, the static loading, this pilot system has better been reduced the real work situation of numerical control turret knife rest, thereby makes the numerical control turret knife rest fault data that obtains in the test and the numerical control turret knife rest reliability level that records more true and reliable.On the other hand, hydraulic loaded mechanism can carry out the adjusting of position and angle, makes this pilot system can both carry out fail-test to the numerical control turret knife rest of different model and size, has increased the dirigibility of this pilot system.
2. when the numerical control turret knife rest reliability test system with electro-hydraulic servo charger described in the utility model carries out continuous fail-test in the laboratory, the entire test circulation is constantly carried out in an orderly manner, and the fault typing Mishap Database that the numerical control turret knife rest is taken place, gathering numerical control turret knife rest fault data with on-the-spot tracking test compares, improve test efficiency and fault collection speed, saved a large amount of financial resources, material resources and time.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the front view of numerical control turret knife rest reliability test system when off working state with electro-hydraulic servo charger described in the utility model;
Fig. 2 is the left view of numerical control turret knife rest reliability test system when off working state with electro-hydraulic servo charger described in the utility model;
Fig. 3 is the axonometric projection graph of the numerical control turret knife rest reliability test system with electro-hydraulic servo charger described in the utility model when in running order;
Fig. 4 is the schematic block diagram of the structural principle of the expression numerical control turret knife rest reliability test system with electro-hydraulic servo charger described in the utility model;
Among the figure: 1. numerical control turret knife rest, 2. Simulated Arbor, 3. boosting-rod, 4. pressure transducer, 5. oscillating bearing, 6. linear axis, 7. box linear bearing, 8. displacement transducer 9. keeps spring, 10. bent plate, 11. slide plates, 12. bases, 13. rotating shaft, 14. rotating shaft slide plates, 15. oil cylinder retainers, 16. oil cylinder, 17. electrohydraulic servo valves, 18. worktable, 19. upper industrial computer, 20. Programmable Logic Controllers (PLC), 21. solenoid directional control valves, 22. saddle controller, 23.1 number A/D card, No. 24.1 signal amplifiers, 25. servoamplifiers, 26.D/A card, 27.2 number signal amplifier, No. 28.2 A/D cards, I. hydraulic loaded mechanism, II. numerical control turret knife rest control section, III. electro-hydraulic servo Loading Control part.
Embodiment
Below in conjunction with accompanying drawing the utility model is explained in detail:
Consult Fig. 3, the utility model is can not simulation cutting power carry out load test to the numerical control turret at the reliability-test equipment of existing numerically-controlled machine numerical control turret knife rest, there are very this present situation of big-difference in test simulation environment and numerical control turret knife rest real working condition, a kind of reliability test system of numerically-controlled machine numerical control turret knife rest is provided, a kind of reliability test system with numerically-controlled machine numerical control turret knife rest of electro-hydraulic servo charger particularly is provided, has realized the fail-test in the laboratory of numerically-controlled machine numerical control turret knife rest.Content of the test not only comprises the transposition test of numerical control turret knife rest, importantly can also simulation cutting power carry out dynamic and static load test to the numerical control turret, and be the dynamic and static loading of multi-angle, successfully simulated numerical control turret knife rest real work environment, and the fault typing numerical control turret knife rest Mishap Database that the numerical control turret knife rest is produced, test condition is pressed close to numerical control turret knife rest real working condition.Compare with the site test tracking test, adopt the reliability test system with numerically-controlled machine numerical control turret knife rest of electro-hydraulic servo charger provided by the utility model just can test, significantly reduced and carried out at the scene spent manpower and materials and the time of numerical control turret knife rest test the numerical control turret in the laboratory.Compare with existing reliability-test equipment, this pilot system is taken into account by this key factor of dynamic and static cutting force of multi-angle during with numerical control turret knife rest real work, and simulated, better reduced numerical control turret knife rest real work environment, thereby make the fault data of numerical control turret knife rest of collection more genuine and believable, the reliability level of the numerical control turret knife rest that records is more convincing.Reliability test system with numerically-controlled machine numerical control turret knife rest of electro-hydraulic servo charger is made up of pumping plant, hydraulic loaded mechanism I, numerical control turret knife rest control section II and electro-hydraulic servo Loading Control part III.Hydraulic loaded mechanism I and numerical control turret knife rest control section II (critical piece) are directly installed on the two ends of worktable 18.Electro-hydraulic servo Loading Control part III (critical piece) is installed on the outer wall of the oil cylinder 16 in the hydraulic loaded mechanism I, being connected into and out of the hydraulic fluid port pipeline of one end of electro-hydraulic servo Loading Control part III and oil cylinder 16, the other end of electro-hydraulic servo Loading Control part III is connected with the pumping plant pipeline.
Consult Fig. 1 and Fig. 2, hydraulic loaded mechanism I comprises boosting-rod 3, oscillating bearing 5, linear axis 6, box linear bearing 7, keeps the support member of spring 9, bent plate 10, slide plate 11, base 12, rotating shaft 13, rotating shaft slide plate 14, oil cylinder retainer 15, oil cylinder 16, worktable 18, bolt and oscillating bearing.
Bent plate 10 includes mutually perpendicular installation base plate, vertical installing plate and a pair of reinforcement gusset between the two, base plate is installed and vertically all is evenly equipped with the through hole that passes T type screw/bolt on the installing plate, vertically the center of the uniform through hole that passes bolt is provided with the through hole that is equipped with rotating shaft 13 on the installing plate.
Slide plate 11 is rectangular plate structure spares, be provided with on the last workplace of slide plate 11 two with the parallel T-slot of slide plate 11 vertical line of symmetries, its four jiaos places are provided with the through hole that T type screw is passed in last workplace vertical being used to, and the following workplace of slide plate 11 is shiny surfaces parallel with last workplace.
Rotating shaft 13 is formed (making) one successively by right spindle, circular flange dish and left rectangular slab, and the axis of symmetry conllinear of three parts.Be evenly equipped with on the circular flange dish with bent plate 10 in vertical uniform corresponding four sections annular through groove of through hole on the installing plate.The center of left side rectangular slab is provided with a through hole, is provided with three sections annular through groove that are used to pass bolt around this through hole.
Rotating shaft slide plate 14 is elongated plates class formation spares, be provided with 2 T-slots from top to bottom on preceding (right side) end face of rotating shaft slide plate 14, the lower end of back (left side) end face of rotating shaft slide plate 14 is provided with a horizontal rotating shaft, preceding (right side), back (left side) end face of being the rotational symmetry line of horizontal rotating shaft and rotating shaft slide plate 14 are vertical, three sections corresponding threaded holes of annular through groove on the left rectangular slab in being provided with three and rotating shaft 13 around the horizontal rotating shaft.
Relate to 3 kinds in the structural design of hydraulic loaded mechanism I and move and 2 kinds of rotations, these structural designs can make the position of oil cylinder 16 and angle regulate within the specific limits.Advantage has two: one, and the size and Orientation of numerical control turret knife rest 1 suffered dynamic load power can be different when the real working condition bottom tool carried out the cutting of different situations, therefore the position and the angle of oil cylinder 16 can be regulated within the specific limits, just can simulate the various true loading angles of numerical control turret knife rest, on each loading angle, can carry out dynamic and static loading it; The 2nd, by adjusting to oil cylinder 16 positions and angle, can be to different model, the numerical control turret knife rest of different size carries out load test, has increased dirigibility and the versatility with numerical control turret knife rest reliability test system of electro-hydraulic servo charger described in the utility model.
Numerical control turret knife rest control section II comprises upper industrial computer 19, Programmable Logic Controller (PLC) 20, solenoid directional control valve 21 and (being installed on the numerical control turret knife rest 1 to be measured) Simulated Arbor 2.
The up direction of Programmable Logic Controller 20 is electrically connected with upper industrial computer 19, the down direction of Programmable Logic Controller 20 is electrically connected with solenoid directional control valve 21 with the up direction of saddle controller 22 respectively, servo motor power supply interface on the down direction of saddle controller 22 and the numerical control turret knife rest 1 to be measured is electrically connected with the servomotor encoder interfaces, the P mouth of solenoid directional control valve 21 is connected the control port A mouth of solenoid directional control valve 21 respectively with the T mouth with the oil return opening pipeline with the oil-feed port of pumping plant, control port B mouth respectively with numerical control turret knife rest 1 to be measured on locking with unclamp cylinder pipe and be connected.Simulated Arbor 2 is installed on the cutterhead of numerical control turret knife rest 1 to be measured, numerical control turret knife rest 1 to be measured is fixedly mounted on the left end of worktable 18, the axis of rotation space parallel of the axis of rotation of cutterhead and hydraulic loaded mechanism I shaft 13 in the numerical control turret knife rest 1 to be measured by parts such as bolts.
More particularly, Programmable Logic Controller 20 is that the employing model is the Omron Programmable Logic Controller of CMP2A-30CDR-D among the embodiment, direct current 24V power supply, 18 direct current input points are arranged, 12 direct current output points, Programmable Logic Controller 20 up directions are connected with the RS-232C port of upper industrial computer 19 by built-in RS-232C port and carry out serial communication, 6 input points are connected with 1 location end signal output point on the saddle controller 22 respectively in Programmable Logic Controller 20 down directions, 4 current station feedback signal output points connect, 1 numerical control turret alerting signal output point connects, also have 2 input points respectively with the numerical control turret knife rest on the sensor that unclamps be connected with the lock sensor interface.7 output points of Programmable Logic Controller 20 down directions respectively with saddle controller 22 on 4 station signals, 2 mode of operation signals be connected with 1 enabling signal input point, also have 2 output points to be electrically connected with the power interface that unclamps, locks of solenoid directional control valve 21.
Saddle controller 22 be with numerical control turret knife rest 1 to be measured in Mitsubishi's model of servomotor coupling be the servoamplifier of MR-J3-40A-RJ070, ingredient for numerical control turret knife rest 1 to be measured, servo motor power supply interface in the two-phase alternating current 220V power supply, saddle controller 22 down directions and numerical control turret knife rest and the servomotor encoder interfaces is supporting is electrically connected.
Upper industrial computer 19 control interfaces are to be made by VB, behind the station of selecting the mode of operation of numerical control turret knife rest 1 on the control interface and needing, with Programmable Logic Controller 20 serial communications, 21 actions of Programmable Logic Controller 20 first output current control solenoid directional control valves, control numerical control turret knife rest 1 cutterhead unclamps, upper industrial computer 19 receives to unclamp determines signal output services mode signal afterwards, station signal and enabling signal are given saddle controller 22, saddle controller 22 control numerical control turret knife rests 1 forward required station to, saddle controller 22 feeds back to location end signal and current station signal and gives Programmable Logic Controller 20 afterwards, then feed back alerting signal as fault, output current control solenoid directional control valve 21 moved after Programmable Logic Controller 20 received location end signal and current station signal, the cutterhead locking of control numerical control turret knife rest, receive locking and determine that feeding back to 19, tool changing of upper industrial computer together with the current station signal behind the signal finishes.
The true knife bar dimensioned of Simulated Arbor 2 simulations; different is that external part is processed into sphere; purpose can withhold on the sphere of Simulated Arbor 2 one ends the concave surface of boosting-rod 3 when being loading; the side force that piston rod bore when this design had reduced oil cylinder 16 dynamic load has greatly well been protected oil cylinder 16.
Electro-hydraulic servo Loading Control part III comprises 19, No. 1 23, No. 1 signal amplifiers 24 of A/D card of upper industrial computer (with shared same the upper industrial computer of numerical control turret knife rest control section II), servoamplifier 25,26, No. 2 signal amplifiers of D/A card 27, No. 2 A/D cards 28, pressure transducer 4, displacement transducer 8 and electrohydraulic servo valves 17.Electrohydraulic servo valve 17 is installed on the outer wall of cylinder block of oil cylinder 16.
The oil-feed port P of electrohydraulic servo valve 17 is connected with the oil return opening pipeline with the oil-feed port of pumping plant respectively with oil return inlet T, the control port A of electrohydraulic servo valve 17 is connected with the upper and lower oil pocket pipeline of oil cylinder (16) respectively with control port B, 4 core electrical outlets on the electrohydraulic servo valve 17 are connected with servoamplifier 25 by shielding line, are electrically connected with upper industrial computer 19 through D/A card 26; Displacement transducer 8 is connected with No. 1 signal amplifier 24 by shielding line, is electrically connected with upper industrial computer 19 through No. 1 A/D card 23; Pressure transducer 4 is connected with No. 2 signal amplifiers 27 by shielding line, is electrically connected with upper industrial computer 19 through No. 2 A/D cards 28.
Upper industrial computer 19 control programs are also made by VB, and whole electro-hydraulic servo Loading Control part III is a close loop control circuit, can form closed loop by Displacement Feedback or pressure feedback.And merge with numerical control turret knife rest control section II, form a complete numerically-controlled machine numerical control turret knife rest fail-test control system.After power supply, pumping plant were opened, upper industrial computer 19 moved down by displacement closed-loop control piston rod earlier.Boosting-rod 3 front ends are withheld on Simulated Arbor 2, transfer pressure closed loop control afterwards to, upper industrial computer 19 sends 26 conversions of command signal process D/A card according to required loading force, vibration frequency and loading waveform and passes to servoamplifier 25, change the opening amount of current signal control electrohydraulic servo valve 17 after conditioning into, control oil cylinder 16 loads.At this moment, pressure transducer 4 imports upper industrial computer 19 into after Simulated Arbor 2 stressed fed back the amplification through No. 2 signal amplifiers 27, No. 2 A/D cards 28 conversions, through a series of comparison and conditioning, draws deviation signal.This deviation signal is through 26 conversions of D/A card, be input to electrohydraulic servo valve 17 after servoamplifier 25 conditionings, make electrohydraulic servo valve 17 produce the load differential pressure action on the piston of oil cylinder 16, pressure is changed to the direction that reduces error, equal until pressure till the value of command signal defined.
Pumping plant unclamps or locks and the oil cylinder 16 that is used to load provides pressure oil for numerical control turret knife rest 1, and the oil pressure requirement can satisfy Simulated Arbor 2 and bear maximum cutting force the time.
Consult Fig. 3, provided the synoptic diagram when carrying out load test among the figure, Mo Ni cutting force is selected the size and the angle of good loading force at first as required, adjust hydraulic loaded mechanism I then and determined the position and the angle of oil cylinder, the axis of boosting-rod 3 can be registered on the sphere of Simulated Arbor 2, and boosting-rod 3 one is can push up on the Simulated Arbor 2 in the stroke range of oil cylinder 16, the 2nd, after loading end boosting-rod 3 is return original position, cutterhead on the numerical control turret knife rest 1 can freely not rotate and interfere with boosting-rod 3, adjusts the back locking that finishes.Owing to keep the position and the direction of the effect oil cylinder 16 of spring 9 to remain unchanged.Power-on, pumping plant, 1 transposition of numerical control turret knife rest control section II control numerical control turret knife rest, the location, clamp, 16 actions of the oil cylinder of electro-hydraulic servo Loading Control part III control afterwards, piston rod drives boosting-rod 3 and moves to Simulated Arbor 2 spheres, the position of piston rod is by recording with the synchronous displacement transducer 8 of piston rod of installing on the oil cylinder 16, boosting-rod 3 slows down and withholds on the sphere of Simulated Arbor 2, afterwards according to given loading force, vibration frequency, load waveform and carry out dynamic load, the pressure transducer 4 feedback force signals of boosting-rod 3 upper ends are given upper industrial computer 19, whole electro-hydraulic servo Loading Control part III forms the closed-loop control of displacement or pressure, after loading end, piston rod is return original position, and the cutterhead of numerical control turret knife rest 1 is free to rotate again.Simulate other angle load test if desired, only need regulate load maintainer, adjust the loading angle that needs after, load maintainer locking just can be continued to load.
Consult Fig. 4, the expression control flow with numerical control turret knife rest reliability test system of electro-hydraulic servo charger described in the utility model among the figure.
Numerical control turret knife rest control section II
The control program of numerical control turret knife rest 1 enrolls Programmable Logic Controller 20 in advance, upper industrial computer 19 and Programmable Logic Controller 20 serial communications control saddle controller 22 and solenoid directional control valve 21, whole holding functions in the time of can realizing numerical control turret knife rest 1 real work, also can make numerical control turret knife rest 1 carry out the location and the clamping of any station continuously, the probability that navigates to each station is identical, and this function is used for numerical control turret 1 is carried out long run test.19 pairs of current station of upper industrial computer, duration of test runs, the record automatically such as location number of times of locating number of times and each station altogether, be presented on the interface of upper industrial computer 19, be convenient to the experimenter and understand the test progress, and the fault typing Mishap Database that numerical control turret knife rest 1 is taken place in process of the test.
Electro-hydraulic servo Loading Control part III
Behind numerical control turret knife rest 1 positioning and locking, upper industrial computer 19 detects the locking feedback signal and just begins loading procedure, sending control signal earlier passes to electrohydraulic servo valve 17 control piston bars through D/A card 26 conversion and moves downward, the displacement transducer of installing on the hydraulic loaded mechanism I 8 amplifies the electric signal that produces through No. 1 signal amplifier 24 and No. 1 A/D card 23 is passed to upper industrial computer 19 after changing, and by the displacement closed-loop control that is made of displacement transducer 8 boosting-rod 3 is withheld on Simulated Arbor 2.Transfer pressure closed loop control to by the displacement closed-loop control afterwards, upper industrial computer 19 sends control signal and passes to electrohydraulic servo valve 17 according to given loading parameters control oil cylinder 16 loadings through 26 conversions of D/A card, the pressure transducer of installing on the hydraulic loaded mechanism I 4 amplifies the electric signal that produces through No. 2 signal amplifiers 27 and No. 2 A/D cards 28 are passed to upper industrial computer 19 after changing, form closed-loop control on the one hand, on the other hand with the size of pressure, waveform, frequencies etc. are presented on the interface of upper industrial computer 19, and the experimenter can select and controls according to testing requirements.
Described in the utility model have the numerical control turret knife rest reliability test system of electro-hydraulic servo charger when numerical control turret 1 is carried out continuous fail-test, Mo Ni cutting situation as required, set parameters such as loading force, vibration frequency, loading waveform, load time, the servo loading of the unclamping of numerical control turret knife rest 1, rotation, location, locking and oil cylinder 16 just can move automatically.After on-test, upper industrial computer 19 control numerical control turret knife rests 1 random position is to any station, after the clamping, upper industrial computer 19 continues 1 loading of 16 pairs of numerical control turrets of control oil cylinder after receiving and clamping feedback signal, after loading procedure finishes, piston rod is return, continuation control numerical control turret knife rest 1 navigated to next one station at random after upper industrial computer 19 received displacement transducer 8 feedback signals, after the clamping, continue loading procedure again, under the automatic control and monitoring of upper industrial computer 19, the entire test circulation is constantly carried out in an orderly manner, improve test efficiency greatly, shortened the fault collection time, saved manpower and materials.
Embodiment described in the utility model can understand and use the utility model for the ease of these those skilled in the art, just a kind of preferred embodiment of the utility model, or perhaps a kind of more specific technical scheme, it only is applicable to the different model in the certain limit, the fail-test of the numerical control turret knife rest 1 of different size, different model outside the scope, the fail-test of the numerical control turret knife rest 1 of different size, basic technical scheme is constant, but the specifications and models of its used parts will change thereupon, as pumping plant, oil cylinder 16, electrohydraulic servo valve 17, the selection of standard components such as pressure transducer 4 and displacement transducer 8 is so the utility model is not limited to the description of this a kind of more specific technical scheme of embodiment.If relevant technician make under the situation of adhering to the utility model basic technical scheme that the equivalent structure that does not need through creative work changes or various modification all in protection domain of the present utility model.
Claims (8)
1. numerical control turret knife rest reliability test system with electro-hydraulic servo charger, form with electro-hydraulic servo Loading Control part (III) by pumping plant, hydraulic loaded mechanism (I), numerical control turret knife rest control section (II), it is characterized in that described hydraulic loaded mechanism (I) comprises boosting-rod (3), keeps spring (9), bent plate (10), slide plate (11), base (12), rotating shaft (13), rotating shaft slide plate (14), oil cylinder retainer (15), oil cylinder (16) and worktable (18);
Base (12) is installed in the right-hand member of worktable (18) by bolt, slide plate (11) passes through T shape screw retention on base (12), bent plate (10) passes through T shape screw retention on slide plate (11), after being rotationally connected, through hole in right spindle in the rotating shaft (13) and the bent plate (10) on the vertical installing plate locks by means of bolt, after being rotationally connected, through hole in horizontal rotating shaft on the rotating shaft slide plate (14) and the rotating shaft (13) on the left rectangular slab locks by means of bolt, oil cylinder retainer (15) is connected on the rotating shaft slide plate (14) by T type screw, the upper end of oil cylinder (16) is connected with oil cylinder retainer (15), being separately installed with maintenance spring (9) between the both sides of the lower end of oil cylinder (16) and the oil cylinder retainer (15), fixedlys connected with boosting-rod (3) one ends by the pressure transducer (4) in the electro-hydraulic servo Loading Control part (III) in the end of the piston rod of oil cylinder (16) lower end.
2. according to the described numerical control turret knife rest reliability test system of claim 1 with electro-hydraulic servo charger, it is characterized in that, the upper end of described oil cylinder (16) is connected with oil cylinder retainer (15) and is meant: a upper end cover is fixed by four double-screw bolts in the top of oil cylinder (16), the upper end cover of oil cylinder (16) top is hinged on the oil cylinder retainer (15) by oscillating bearing (5), between upper end cover and oil cylinder (16) upper surface, fix a linear axis (6), the axis of symmetry of linear axis (6) is parallel with the axis of symmetry of oil cylinder (16) piston rod, slidely connect box linear bearing (7) on the linear axis (6), fixedly connected in one end of box linear bearing (7) and the end of piston rod, the inner core of the displacement transducer (8) in the other end of box linear bearing (7) and the electro-hydraulic servo Loading Control part (III) is fixedlyed connected.
3. according to the described numerical control turret knife rest reliability test system of claim 1 with electro-hydraulic servo charger, it is characterized in that, described rotating shaft (13) is formed one successively by right spindle, circular flange dish and left rectangular slab, the axis of symmetry conllinear of right spindle, circular flange dish and left rectangular slab, be evenly equipped with four sections annular through groove that are used to pass bolt on the circular flange dish, the center of left side rectangular slab is provided with a through hole, is evenly equipped with three sections annular through groove that are used to pass bolt around this through hole.
4. according to the described numerical control turret knife rest reliability test system of claim 1 with electro-hydraulic servo charger, it is characterized in that, described rotating shaft slide plate (14) is an elongated plates class formation spare, be provided with 2 T-slots on the front end face of rotating shaft slide plate (14) from top to bottom, the lower end of the rear end face of rotating shaft slide plate (14) is provided with a horizontal rotating shaft, the rotational symmetry line that is horizontal rotating shaft is vertical with the front and rear end of rotating shaft slide plate (14), is being provided with in three and the rotating shaft (13) three sections corresponding threaded holes of annular through groove on the left rectangular slab around the horizontal rotating shaft.
5. according to the described numerical control turret knife rest reliability test system of claim 1 with electro-hydraulic servo charger, it is characterized in that, described oil cylinder retainer (15) is a strip case structure spare, promptly by a base plate, top board left plate and a right plate identical with two block structures constitutes, left plate, the top board right plate identical with structure is from a left side, go up with right three faces and be fixed on the base plate front end face, the lower end of oil cylinder retainer (15) is opened wide, be evenly equipped with two on the base plate and arrange the through hole that passes bolt, the distance between 2 T-slots on distance between two exhausting holes and rotating shaft slide plate (14) front end face equates.
6. according to the described numerical control turret knife rest reliability test system of claim 1 with electro-hydraulic servo charger, it is characterized in that described numerical control turret knife rest control section (II) comprises upper industrial computer (19), Programmable Logic Controller (20), solenoid directional control valve (21) and Simulated Arbor (2);
The up direction of Programmable Logic Controller (20) is electrically connected with upper industrial computer (19), the down direction of Programmable Logic Controller (20) respectively and saddle controller (22) be electrically connected with solenoid directional control valve (21), servo motor power supply interface on the down direction of saddle controller (22) and the numerical control turret knife rest to be measured (1) is electrically connected with the servomotor encoder interfaces, the P mouth of solenoid directional control valve (21) is connected with the oil return opening pipeline with the oil-feed port of pumping plant respectively with the T mouth, the control port A mouth of solenoid directional control valve (21) and control port B respectively with numerical control turret knife rest to be measured (1) on locking with unclamp cylinder pipe and be connected, Simulated Arbor (2) is installed on the cutterhead of numerical control turret knife rest to be measured (1).
7. according to the described numerical control turret knife rest reliability test system of claim 6 with electro-hydraulic servo charger, it is characterized in that, the up direction of described Programmable Logic Controller (20) is electrically connected with upper industrial computer (19), the down direction of Programmable Logic Controller (20) respectively and saddle controller (22) be electrically connected with solenoid directional control valve (21) and be meant:
The up direction of Programmable Logic Controller (20) is connected with the RS-232C port serial ports of upper industrial computer (19) by built-in RS-232C port, 6 input points in Programmable Logic Controller (20) down direction are connected with last 1 the location end signal output point of saddle controller (22) respectively, 4 current station feedback signal output points connect and are connected with 1 knife rest alerting signal output point, in addition 2 input points respectively with numerical control turret knife rest (1) on the sensor that unclamps be connected with the lock sensor interface; 7 output points in Programmable Logic Controller (20) down direction respectively and last 4 the station signals of saddle controller (22), 2 mode of operation signals be electrically connected with 1 enabling signal input point, also have unclamping and locking power interface and be connected of 2 output points and solenoid directional control valve (21).
8. according to claim 1 or 6 described numerical control turret knife rest reliability test systems with electro-hydraulic servo charger, it is characterized in that described electro-hydraulic servo Loading Control part (III) comprises upper industrial computer (19), No. 1 A/D card (23), No. 1 signal amplifier (24), servoamplifier (25), D/A card (26), No. 2 signal amplifiers (27), No. 2 A/D cards (28), pressure transducer (4), displacement transducer (8) and electrohydraulic servo valve (17);
The oil-feed port P of electrohydraulic servo valve (17) is connected with the oil return opening pipeline with the oil-feed port of pumping plant respectively with oil return inlet T, the control port A of electrohydraulic servo valve (17) and control port B respectively with oil cylinder (16) on, the lower oil cavitie pipeline connects, 4 core electrical outlets on the electrohydraulic servo valve (17) are connected with servoamplifier (25) by shielding line, be electrically connected with upper industrial computer (19) through D/A card (26), displacement transducer (8) is connected with No. 1 signal amplifier (24) by shielding line, be electrically connected with upper industrial computer (19) through No. 1 A/D card (23), pressure transducer (4) is connected with No. 2 signal amplifiers (27) by shielding line, is electrically connected with upper industrial computer (19) through No. 2 A/D cards (28).
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| CN201020537849XU CN201788095U (en) | 2010-09-21 | 2010-09-21 | Numerical control turret head reliability test system having electro-hydraulic servo loading device |
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