CN113375717B - Ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading - Google Patents
Ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading Download PDFInfo
- Publication number
- CN113375717B CN113375717B CN202110616164.7A CN202110616164A CN113375717B CN 113375717 B CN113375717 B CN 113375717B CN 202110616164 A CN202110616164 A CN 202110616164A CN 113375717 B CN113375717 B CN 113375717B
- Authority
- CN
- China
- Prior art keywords
- loading
- main shaft
- transmission
- clutch
- synchronous belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading, which comprises a lathe bed, a main shaft system to be measured, a middle main shaft system, a loading main shaft system, a motor, a braking loading device and a synchronous pulley clutch power conversion mechanism, wherein the main shaft system to be measured, the middle main shaft system, the loading main shaft system, the motor, the braking loading device and the synchronous pulley clutch power conversion mechanism are arranged on the lathe bed, and a nut axial speed measuring device, a nut axial force measuring device, a rotating speed torque measuring device, a nut vibration measuring device, a temperature measuring device and a transmission precision measuring device are arranged on the measuring platform. The invention can measure the forward and reverse stroke transmission efficiency, vibration, temperature rise, positioning accuracy, reverse clearance and other performances of the ball screw pair under four states of positive transmission loaded, positive transmission unloaded, reverse transmission loaded and reverse transmission unloaded by changing the synchronous pulley clutch power conversion mechanism under the condition of one-time clamping; the experiment table adopts synchronous pulley transmission, can realize forward and reverse rotation, has large transmission distance, is not easy to slip, has strong bearing capacity and low noise.
Description
Technical Field
The invention belongs to the field of dynamic performance measurement of a ball screw pair, and particularly relates to a ball screw pair comprehensive performance measurement platform capable of realizing forward and reverse transmission loading.
Background
In modern manufacturing systems, the development of numerically controlled machine tool technology is inseparably linked with the development of manufacturing. In recent years, with the gradual improvement of the technical level of the domestic numerical control machine tool industry, the performance of the numerical control machine tool is rapidly developed. However, in the core technical field of the numerical control machine tool, the development of the machine tool industry in China has a large gap compared with the international advanced level, and the gap is particularly obvious in the aspects of high-performance and high-precision high-end machine tool industries. The ball screw pair is used as a rolling part of a core function of a numerical control machine tool, has outstanding problems in the aspects of dynamic measurement and performance characteristic research of transmission efficiency, vibration, temperature, positioning accuracy and reverse clearance, and needs to be solved by the improvement of the technical level urgently. Therefore, the dynamic measurement and performance research of the comprehensive performance of the ball screw pair are extremely important, and the ball screw pair is a major problem which is urgently needed to be solved by the numerical control machine tool industry in China at present.
The transmission efficiency of the ball screw pair is the ratio of output power to input power, which is theoretically defined, and the size of the transmission efficiency directly influences the quality of the screw pair and even the whole numerical control machine tool; vibration and temperature rise in the transmission process of the ball screw pair are also important properties, and the transmission performance and the service life of the screw are influenced; the positioning accuracy and the reverse clearance represent the transmission accuracy of the screw pair. Therefore, the dynamic measurement and research analysis of the comprehensive performance of the ball screw pair have a decisive role in improving the quality of machine tool products, and at present, domestic research on the dynamic measurement of the comprehensive performance is still few, so that the field still has considerable improvement and improvement space.
The existing test device for measuring the comprehensive performance cannot measure the comprehensive performance of the ball screw pair in a loading state or realize the loading measurement of the comprehensive performance of the ball screw pair in a reverse transmission state, so the measured performance has certain limitation, the ball screw pair is difficult to be deeply researched, and the tested screw pair is difficult to be comprehensively and objectively evaluated.
Disclosure of Invention
The invention aims to provide a ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading, which can realize measurement of the ball screw pair comprehensive performance through one-time clamping.
The technical solution for realizing the purpose of the invention is as follows:
a ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading comprises: the device comprises a lathe bed, a main shaft system to be tested, a middle main shaft system and a loading main shaft system, wherein the main shaft system to be tested, the middle main shaft system and the loading main shaft system are arranged on the lathe bed in parallel;
the main shaft system to be tested comprises a motor main shaft, a transition shaft and a screw shaft to be tested which are coaxially arranged; the transition shaft is connected with the screw shaft to be measured; a first hollow synchronous belt pulley is arranged on the motor main shaft, a first fixed synchronous belt pulley is arranged on the transition shaft, and a first clutch power conversion mechanism is arranged between the motor main shaft and the transition shaft and used for switching the connection transmission state of the motor main shaft and the first hollow synchronous belt pulley or the transition shaft;
the loading main shaft system comprises a brake loading device main shaft and a loading lead screw extending shaft which are coaxially arranged; a second hollow synchronous belt pulley is arranged on the main shaft of the brake loading device, a second fixed synchronous belt pulley is arranged on the loading lead screw extension shaft, and a second clutch power conversion mechanism is arranged between the main shaft of the brake loading device and the loading lead screw extension shaft and used for switching the connection transmission state of the loading lead screw extension shaft and the second hollow synchronous belt pulley or the loading lead screw extension shaft;
a third fixed synchronous belt pulley and a fourth fixed synchronous belt pulley are arranged on the middle main shaft system and are in paired transmission with the first empty sleeve synchronous belt pulley and the second fixed synchronous belt pulley respectively; the second hollow synchronous belt pulley and the first fixed synchronous belt pulley are in paired transmission;
the to-be-tested screw shaft is connected with the loading screw shaft through a slidable workbench.
Compared with the prior art, the invention has the following remarkable advantages:
(1) The invention has simple principle, and can realize the measurement of the forward and reverse stroke comprehensive performance of the screw under four conditions of forward transmission loaded, forward transmission unloaded, reverse transmission loaded and reverse transmission unloaded by the conversion of the transmission relation between the synchronous pulley clutch power conversion mechanism and the synchronous pulleys after the screw is clamped once.
(2) The gear shifting action of the invention is completed by the pull rod device of the synchronous pulley clutch power conversion mechanism through push-pull action, the control is simple and reliable, and the practicability and the operation performance of the device are greatly improved.
(3) The invention adopts a horizontal structure, can reduce the influence of the gravity of the workbench on the measurement and reduce the loading difficulty, and simultaneously has more convenient installation, more convenient operation and higher reliability compared with a vertical test bed.
(4) The invention can measure the transmission efficiency while measuring the common performances of vibration, temperature rise, positioning accuracy and reverse clearance.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the dynamic measurement device for the comprehensive performance of the screw pair of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the synchronous pulley clutch power conversion mechanism.
Fig. 3 (a-b) is a schematic diagram of the main shaft system to be tested of the synchronous pulley clutch power conversion mechanism.
FIG. 4 is a schematic diagram of a middle main shaft system of a synchronous pulley clutch power conversion mechanism.
Fig. 5 (a-b) is a schematic view of a synchronous pulley clutch power conversion mechanism loading main shaft system.
Fig. 6 (a-b) is a schematic diagram of a push-pull device of a synchronous pulley clutch power conversion mechanism.
Fig. 7 is a schematic view of a sleeve and a fastening nut of a push-pull device of a synchronous pulley clutch power conversion mechanism.
FIG. 8 is a schematic view of a support tailstock.
Fig. 9 is a schematic view of the bed.
Fig. 10 is a schematic view of bed installation.
Fig. 11 is a schematic view of the table assembly.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
The ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading comprises a bed body 10, and a main shaft system 1-1 to be measured, an intermediate main shaft system 1-2, a loading main shaft system 1-3, a motor 2, a brake loading device 3 and a synchronous pulley clutch power conversion mechanism 4 which are arranged on the bed body; the measuring platform is provided with a nut axial speed measuring device 5, a nut axial force measuring device 6, a rotating speed and torque measuring device 7, a nut vibration measuring device 8, a temperature measuring device 9 and a transmission precision measuring device 11;
with reference to fig. 2, the clutch mechanism and the synchronous pulley mechanism are matched to realize reversing loading, the main shaft system to be tested 1-1, the middle main shaft system 1-2 and the loading main shaft system 1-3 are mounted on a lathe bed through a supporting part and a bearing support, one end of the main shaft system to be tested is connected with a lead screw to be tested, the other end of the main shaft system to be tested is connected with a motor shaft, one end of the loading main shaft system is connected with the loading lead screw, the other end of the loading main shaft system is connected with a braking loading device, and the main shaft system to be tested and the loading main shaft system are both provided with a bidirectional moving synchronous pulley clutch power conversion mechanism for realizing the functions of converting the transmission direction and loading.
With reference to fig. 3 (a-b), the main shaft system 1-1 to be measured includes a motor main shaft 1-1-1, a bearing end cover 1-1-2, an angular contact ball bearing 1-1-3, a clutch idle sleeve synchronous pulley 1-1-4, a tightly fixed positioning shaft sleeve 1-1-5, a slidable clutch 1-1-6, a clutch mounting shaft sleeve 1-1-7, a non-slip clutch 1-1-8, a fixed synchronous pulley 1-1-9, a circular grating 1-1-10, a first coupler 1-1-11, a torque and rotation speed measuring device 1-1-12, a second coupler 1-1-13, and a screw shaft 1-1-14 to be measured; the main shaft system comprises three shafts, namely a motor main shaft 1-1-1 (the main shaft is sequentially provided with a clutch hollow synchronous belt pulley 1-1-4 and a slidable clutch 1-1-6), a transition shaft (the main shaft is sequentially provided with an unsynchronized clutch 1-1-8, a fixed synchronous belt pulley 1-1-9, a circular grating 1-1-10, a first coupler 1-1-11) and a screw shaft 1-1-14 to be tested, and the three shafts are coaxially arranged. The motor spindle 1-1-1 is arranged on a support plate 13 through an angular contact ball bearing 1-1-3, the support plate 13 is connected with the lathe bed 10, and a bearing end cover 1-1-2 is arranged on the support plate. The lead screw shaft 1-1-14 to be tested is supported by a bearing support arranged on the lathe bed, the motor main shaft 1-1-1 is arranged and positioned with the transition shaft through the clutch mounting shaft sleeve 1-1-7, and the transition shaft is arranged and positioned with the lead screw shaft 1-1-14 to be tested through the second coupler 1-1-13. The slidable clutch 1-1-6 on the main shafting 1-1 to be tested can be meshed with the clutch idle synchronous pulley 1-1-4 and the non-slidable clutch 1-1-8 respectively through left-right sliding to complete power transmission.
With reference to fig. 4, the middle main shaft system 1-2 includes two synchronous pulleys 1-2-1, 1-2-2 and two groups of angular contact ball bearings 1-2-3, 1-2-4 and bearing end caps 1-2-5, 1-2-6, the two synchronous pulleys 1-2-1, 1-2-2 are respectively matched with the clutch empty sleeve synchronous pulley 1-1-4 on the main shaft system 1-1 to be tested and the fixed synchronous pulley 1-3-9 on the loading main shaft system 1-3 for transmission, so that the conversion of driving can be realized, the power of the motor can be transmitted to the middle main shaft system 1-2 through the main shaft system 1-1 to be tested and then transmitted to the loading main shaft system 1-3 for further transmission to the loading screw rod for realizing reverse transmission, the two groups of angular contact ball bearings 1-2-4 are installed at two ends of the middle main shaft system 1-2, and finally installed on a support plate and a bearing support seat on the machine bed through the two bearing end caps 1-2-5, 1-2-6.
With reference to fig. 5 (a-b), the loading main shaft system 1-3 includes a braking loading device main shaft 1-3-1, a bearing end cover 1-3-2, an angular contact ball bearing 1-3-3, a clutch idle sleeve synchronous pulley 1-3-4, a tightly fixed positioning shaft sleeve 1-3-5, a slidable clutch 1-3-6, a clutch mounting shaft sleeve 1-3-7, an non-clutch 1-3-8, a fixed synchronous pulley 1-3-9, and a loading screw extension shaft 1-3-10; the main shaft system comprises two shafts, namely a main shaft 1-3-1 of a brake loading device (the main shaft is sequentially provided with a clutch hollow synchronous belt pulley 1-3-4 and a slidable clutch 1-3-6), and an extension shaft 1-3-10 of a loading screw rod (the main shaft is sequentially provided with a non-clutch 1-3-8 and a fixed synchronous belt pulley 1-3-9), and the two shafts are coaxially arranged. A main shaft 1-3-1 of the brake loading device is arranged on a supporting plate 13 through an angular contact ball bearing 1-3-3, the supporting plate 13 is connected with a lathe bed 10, an extension shaft 1-3-10 of a loading lead screw is arranged on a bearing support, and the main shaft 1-3-1 of the brake loading device is arranged and positioned with the extension shaft 1-3-10 of the loading lead screw through a clutch. The slidable clutches 1-3-6 on the loading main shafting 1-3 can be respectively meshed with the clutch idle synchronous pulleys 1-3-4 and the non-slidable clutches 1-3-8 through left-right sliding to finish the transmission of power;
the forward and reverse transmission and loading functions can be realized by the left and right sliding of the synchronous pulley clutch power conversion mechanism on the main shafting 1-1 to be tested and the loading main shafting 1-3.
Referring to FIGS. 6 (a-b) and 7, the clutches of the main shafting 1-1 to be tested and the loading main shafting 1-3 are respectively pushed and pulled by the pull rods matched with the clutches to realize axial movement, the lower part takes the main shafting 1-1 to be tested as an example, the slidable clutch 1-1-6 is matched with the shifting fork 1-1-6-1, the shifting fork 1-1-6-1 is connected with the pull rod 1-1-6-2 through threads, the pull rod 1-1-6-2 is arranged in the pull rod barrel 1-1-6-3 and can axially move along the pull rod barrel 1-1-6-3, and the pull rod is pushed and pulled through the pull rod barrel 1-1-6-3, two ends of a pull rod barrel 1-1-6-3 are arranged on a supporting plate 1-1-6-8, a limiting groove 1-1-6-7 is arranged on the pull rod barrel 1-1-6-3 and used for limiting the moving distance of the pull rod 1-1-6-2, the width of the limiting groove 1-1-6-7 is the same as the diameter of the pull rod 1-1-6-2, the length of the limiting groove 1-1-6-7 is the sliding distance of a slidable clutch 1-1-6, when the pull rod 1-1-6-2 is pulled to two ends of the limiting groove 1-1-6-7, the clutch is in an engaged or separated state, a pull rod handle 1-1-6-4 is arranged in the direction of the pull rod 1-1-6-2 close to the motor side, the push-and-pull is convenient, the pull rod barrel 1-1-6-3 is provided with a threaded hole close to the motor end 1-1-6-5, when the pull rod is pulled to a specified position, the position of the pull rod 1-1-6-2 can be fixed through the fastening nut 1-1-6-6, and the clutch is prevented from sliding due to vibration in the running process of the test bed.
Referring to fig. 8, the ball screw assembly is mounted on the bed 10 through a support tailstock 12, the support tailstock 12 includes a bearing seat 12-1 and a tailstock seat 12-2, the bearing seat 12-1 is mounted and matched with the screw through a bearing, the bearing seat 12-1 is connected with the tailstock seat 12-2 through a bolt, the height of the bearing seat and the tailstock seat is adjusted through a gasket, the tailstock seat 12-2 is matched and positioned with the bed 10 through a flat rail and a V rail, so that the support tailstock 12 can move along the flat V rail to adjust the mounting position according to the length of the screw, then the support tailstock 12 is locked through the bolt, the support tailstock 12 is fixed, and the two ends of the screw are supported (the other ends are mounted on a bearing support on the bed 10 through the bearing and a bearing end cover).
With reference to fig. 9 and 10, a V-shaped rail and a flat rail combination are arranged on the surface of the guide rail of the bed 10, so that the support tailstock 12 can conveniently mount and position the lead screw according to the specific length of the lead screw; meanwhile, four travel switches 15 are arranged on the surface, two travel switches are respectively arranged on the side surfaces of the screw workbench to be tested and the loading screw workbench, and are responsible for controlling the initial position and the final position of the workbench; in addition, a nut axial speed measuring device 5 which is responsible for measuring the linear moving speed of the workbench is also arranged on the lathe bed, and the sensor uses a laser displacement sensor; the lathe bed 10 is provided with a supporting plate 13 and three bearing supports for mounting a main shaft system 1-1 to be tested, a middle main shaft system 1-2 and a loading main shaft system 1-3, and is also responsible for positioning and mounting a motor 2, a braking loading device 3 and a lead screw guide rail. The lathe bed 10 is provided with a mounting seat 14 for placing a circular magnetic grid and a torque and rotating speed sensor. The brake loading device 3 adopts an eddy current brake.
Referring to fig. 11, the long workbench 18 is mounted on the bed 10 through guide rails, the guide rails are three long workbench parallel guide rails 16, the two ends of the long workbench 18, the lead screw pair to be tested and the loading lead screw pair matched with each other are mounted on two guide rails, and the middle part of the long workbench is mounted on one guide rail, so that the influence of unbalance loading on the lead screw can be reduced. And a small workbench 19 for mounting a screw pair to be tested is arranged on the two small workbench parallel guide rails 17. The two working tables are rigidly connected through a nut axial force measuring device 6 to realize synchronous transmission.
Under each state, a rotating speed and torque measuring device 7 on a main shaft system 1-1 to be measured measures the rotating speed and torque of a screw pair to be measured, a nut axial speed measuring device 5 measures the axial speed of a nut of the screw pair to be measured, a nut axial force measuring device 6 measures the axial force of the nut of the screw pair to be measured, a nut vibration measuring device 8 measures a vibration signal in the transmission process of the screw pair, a temperature measuring device 9 measures the temperature change of transmission, and a transmission precision measuring device 9 measures the positioning precision and the reverse clearance of the screw pair to be measured. The nut axial speed measuring device 5 is specifically a laser displacement sensor; the nut axial force measuring module 6 is specifically an axial tension pressure sensor and is connected between the long workbench 18 and the small workbench 19; the rotating speed and torque measuring device 7 for measuring the rotating speed and torque of the lead screw to be measured is specifically a rotating speed and torque sensor; the nut vibration measuring device 8 for measuring the vibration signal of the lead screw pair to be measured is specifically a three-axis vibration sensor; the temperature measuring device 9 for measuring the temperature of the lead screw pair to be measured is specifically a temperature sensor arranged on the small workbench 19; the transmission precision measuring device 11 for measuring the positioning precision and the reverse clearance is composed of a circular grating arranged on a main shaft system to be measured and a laser displacement sensor arranged on a lathe bed.
The clutch power conversion mechanism can be divided into a left slidable clutch, a right non-slidable clutch and a shaft sleeve. Two ends of the left slidable clutch are respectively provided with an involute gear and a half clutch with teeth, the center of the empty pulley is provided with an internal gear, and the involute gear is used for being internally meshed with the empty pulley; the half clutch with teeth is used for meshing with the right non-clutch. The right non-clutch is circumferentially fixed on the corresponding shaft through a spline and is axially positioned through the shaft sleeve to synchronously rotate with the fixed belt wheel.
On the main shaft system to be tested, the transition shaft on which the fixed synchronous belt wheel and the non-clutchable are positioned is ensured to be coaxial with the main shaft of the motor through the shaft sleeve of the clutching power switching mechanism, but the two shafts are separated and do not generate synchronous rotation. On the loading main shaft system, an extension shaft of a loading screw on which a fixed synchronous belt wheel and an immovable clutch are positioned is coaxial with a main shaft at the extension end of a braking loading device through a shaft sleeve of a clutch power conversion mechanism, but the two shafts are separated and do not rotate synchronously.
The left slidable clutch is circumferentially positioned on the shaft through a spline on the main shaft at the extending end, and the shifting fork is controlled by the pull rod to drive the slidable clutch to slide along the axial direction and can be meshed with the inner meshing of the hollow synchronous belt pulley or the non-engageable clutch. When the brake is meshed with the hollow synchronous belt wheel, the hollow synchronous belt wheel and a main shaft at the extension end of the motor (or a main shaft at the extension end of the brake loading device) synchronously rotate to be separated from a hollow state; when the non-movable clutch is engaged, the idle synchronous belt wheel is in an idle state, a main shaft at the extending end of the motor (or a main shaft at the extending end of the brake loading device) is connected with a transition shaft (or an extending shaft of the loading screw) through a clutch power conversion mechanism, and the fixed synchronous belt wheel and the main shaft at the extending end of the motor (or the main shaft at the extending end of the brake loading device) synchronously rotate.
The following four transmission states can be realized through the clutch power conversion mechanism:
(1) Positive drive no load condition:
a slidable clutch 1-1-6 on a main shaft system 1-1 to be tested is meshed with a non-slidable clutch 1-1-8, a synchronous pulley 1-1-4 sleeved on a motor main shaft 1-1-1 is in a sleeved state, and the main shaft 1-1-1 at the extension end of the motor is connected with a transition shaft through a clutch power conversion mechanism; on the loading main shaft system 1-3, the slidable clutch 1-3-6 is not meshed with the non-slidable clutch 1-3-4 or the non-slidable clutch 1-3-8, the non-slidable clutch 1-3-4 on the main shaft 1-3-1 of the brake loading device is in a non-slidable state, and the loading screw extending shaft 1-3-10 of the loading main shaft system 1-3 is separated from the main shaft 1-3-1 at the extending end of the brake loading device.
The motion generated by the motor 2 is transmitted to a lead screw to be tested through a transition shaft where the clutch power conversion mechanism is located, the fixed synchronous pulley 1-3-9 on the main shaft system 1-1 to be tested also rotates synchronously with the lead screw and is meshed with the hollow synchronous pulley 1-3-4 on the loading main shaft system 1-1 through the synchronous belt, and the motion cannot be transmitted to the loading main shaft system 1-3 because the hollow synchronous pulley 1-3-4 on the loading main shaft system 1-3 is in a hollow state. The synchronous belt wheel 1-3-4 is sleeved on the main shaft 1-3-1 of the brake loading device in an empty state, the main shaft 1-3-1 of the brake loading device is separated from the extension shaft 1-3-10 of the loading screw rod, no motion is transmitted to the main shaft 1-3-1 at the extension end of the brake loading device, and the eddy current brake cannot generate resistance and cannot transmit the resistance to the loading screw rod, so that the loading function cannot be realized.
(2) Positive drive loaded state:
a slidable clutch 1-1-6 on a main shaft system 1-1 to be tested is meshed with a non-slidable clutch 1-1-8, a hollow synchronous pulley 1-1-4 on a main shaft 1-1-1 at the extension end of a motor is in a hollow state, and the main shaft 1-1-1 of the motor is connected with a transition shaft through a clutch power conversion mechanism; on a loading main shaft system 1-3, a slidable clutch 1-3-6 is meshed with a non-clutch 1-3-8, a hollow synchronous pulley 1-3-4 on a main shaft 1-3-1 at the extension end of a brake loading device is in a hollow state, and the main shaft 1-3-1 of the brake loading device is connected with an extension shaft 1-3-10 of a loading screw rod through a clutch power conversion mechanism.
The motion generated by the motor 2 is transmitted to a lead screw to be tested through a transition shaft where the clutch power conversion mechanism is located, the fixed synchronous pulley 1-3-9 on the main shaft system 1-1 to be tested also rotates synchronously with the lead screw and is meshed with the hollow synchronous pulley 1-3-4 on the loading main shaft system 1-1 through the synchronous belt, and the motion cannot be transmitted to the loading main shaft system 1-3 because the hollow synchronous pulley 1-3-4 on the loading main shaft system 1-3 is in a hollow state. Because the empty synchronous belt wheel 1-1-4 on the main shaft system 1-1 to be tested is in an empty state, the resistance provided by the eddy current brake cannot be transmitted to the motor main shaft 1-1-1 through the synchronous belt wheel, but is transmitted to the loading screw rod through the clutch power conversion mechanism, and finally the loading screw rod is loaded through the workbench.
(3) Reverse drive no-load state:
a slidable clutch 1-1-6 on a main shaft system 1-1 to be tested is internally meshed with an empty synchronous pulley 1-1-4, the empty synchronous pulley 1-1-4 and a main shaft 1-1-1 at the extension end of a motor synchronously rotate, and the main shaft 1-1-1 of the motor is separated from a transition shaft; on the loading main shaft system 1-3, the slidable clutch 1-3-6 is not meshed with the empty sleeve synchronous pulley 1-3-4 or meshed with the non-movable clutch 1-3-8, the empty sleeve synchronous pulley 1-3-4 is in an empty sleeve state, and the main shaft of the braking loading device is separated from the loading screw extension shaft 1-3-10.
The motion of the motor 2 is transmitted to the fixed synchronous pulley 1-2-1 of the middle main shaft system 1-2 through the clutch power conversion mechanism and then transmitted to the fixed synchronous pulley 1-3-9 of the loading screw main shaft system 1-3 through the other fixed synchronous pulley 1-2-2 on the middle main shaft system 1-2, so that the loading screw is driven to rotate. Because the main shaft 1-3-1 of the brake loading device is separated from the extension shaft 1-3-10 of the loading screw rod, and the idler synchronous belt pulley 1-3-4 on the main shaft 1-3-1 of the brake loading device is in an idler state, the motion cannot be transmitted to the eddy current brake, and the eddy current brake cannot generate resistance and cannot be transmitted to other parts. At the moment, the motor 2 drives the loading screw rod to rotate through the transmission of the middle main shaft system 1-2, so that the long workbench 18 is driven to linearly move, the small workbench 19 is driven to linearly move, the screw rod to be tested rotates, the screw rod to be tested is in a reverse transmission state, and the eddy current brake cannot realize a loading function.
(4) Reverse drive loaded state:
a slidable clutch 1-1-6 on a main shaft system 1-1 to be tested is internally meshed with an empty sleeve synchronous pulley 1-1-4, the empty sleeve synchronous pulley 1-1-4 and a motor main shaft 1-1-1 synchronously rotate, and the motor main shaft 1-1-1 is separated from a transition shaft; on a loading main shaft system 1-3, a slidable clutch 1-3-6 is internally meshed with an empty sleeve synchronous pulley 1-3-4, the empty sleeve synchronous pulley 1-3-8 and a braking loading device main shaft 1-3-1 synchronously rotate, and the braking loading device main shaft 1-3-1 is separated from a loading screw extension shaft 1-3-10.
The motion generated by the motor 2 is transmitted to the fixed synchronous pulley 1-2-1 of the middle main shaft system 1-2 through the clutch power conversion mechanism and then transmitted to the fixed synchronous pulley 1-3-9 of the loading screw main shaft system 1-3 through the other fixed synchronous pulley 1-2-2 on the middle main shaft system 1-2, so that the loading screw is driven to rotate. The eddy current brake on the loading main shaft system provides resistance, and the resistance is transmitted to the fixed synchronous belt wheel 1-1-9 of the main shaft system 1-1 to be tested through the synchronously rotating hollow synchronous belt wheel 1-3-4 and then transmitted to the lead screw to be tested through the transition shaft. At the moment, the motor 2 drives the loading screw rod to rotate through the transmission of the middle main shaft system 1-2, the long workbench 18 is driven to linearly move, and then the small workbench 19 is driven to linearly move, so that the screw rod to be tested rotates, the screw rod to be tested is in a reverse transmission state, the resistance of the eddy current brake is transmitted to the screw rod to be tested, and the reverse transmission loading function is realized.
The device can meet the requirements of the measurement of the comprehensive properties of the ball screw pair such as transmission efficiency, vibration, temperature rise, positioning accuracy, reverse clearance and the like, and can measure the comprehensive properties of the positive and negative strokes of the ball screw pair in four states of positive transmission loaded, positive transmission unloaded, reverse transmission loaded and reverse transmission unloaded after one-time clamping; the gear shifting action is completed by the pull rod device of the synchronous belt wheel clutch power conversion mechanism through push-pull action, the control is simple and reliable, and the practical performance and the operating performance of the device are greatly improved; the synchronous belt wheel is adopted for transmission, so that forward and reverse rotation can be realized, the transmission distance is large, the slippage is not easy to occur, the bearing capacity is strong, and the noise is low; adopt horizontal structure, can reduce the influence of workstation gravity to the measurement, reduce the loaded degree of difficulty, it is more convenient to compare vertical test bench installation simultaneously, and the rigidity is bigger, and the reliability is higher.
Claims (7)
1. The utility model provides a can realize vice comprehensive properties measuring platform of ball of positive and negative transmission loading which characterized in that includes: the device comprises a lathe bed, a main shaft system to be tested, a middle main shaft system, a loading main shaft system and a test unit, wherein the main shaft system to be tested, the middle main shaft system, the loading main shaft system and the test unit are arranged on the lathe bed in parallel;
the main shaft system to be tested comprises a motor main shaft, a transition shaft and a lead screw shaft to be tested which are coaxially arranged; the transition shaft is connected with the screw shaft to be measured; a first hollow synchronous belt pulley is arranged on the motor main shaft, a first fixed synchronous belt pulley is arranged on the transition shaft, and a first clutch power conversion mechanism is arranged between the motor main shaft and the transition shaft and used for switching the connection transmission state of the motor main shaft and the first hollow synchronous belt pulley or the transition shaft;
the loading main shaft system comprises a brake loading device main shaft and a loading lead screw extension shaft which are coaxially arranged; a second hollow synchronous belt pulley is arranged on the main shaft of the brake loading device, a second fixed synchronous belt pulley is arranged on the loading lead screw extension shaft, and a second clutch power conversion mechanism is arranged between the brake loading device and the loading lead screw extension shaft and used for switching the connection transmission state of the loading lead screw extension shaft and the second hollow synchronous belt pulley or the loading lead screw extension shaft;
the middle main shaft system is provided with a third fixed synchronous belt pulley and a fourth fixed synchronous belt pulley which are respectively in paired transmission with the first empty sleeve synchronous belt pulley and the second fixed synchronous belt pulley; the second empty sleeve synchronous belt pulley is in paired transmission with the first fixed synchronous belt pulley;
the to-be-tested lead screw shaft is connected with the loading lead screw extension shaft through a slidable workbench;
the test unit comprises a combination of one or more of the following measuring devices:
the rotating speed and torque measuring device is used for measuring the rotating speed and the torque of the lead screw pair to be measured;
the nut axial force measuring device is used for measuring the axial force of the nut of the lead screw pair to be measured;
the nut vibration measuring device is used for measuring a vibration signal in the transmission process of the screw pair;
the temperature measuring device is used for measuring the temperature change of the transmission;
and the transmission precision measuring device is used for measuring the positioning precision and the reverse clearance of the lead screw pair to be measured.
2. The ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading according to claim 1,
the first clutch power conversion mechanism enables a motor spindle to be connected with the transition shaft for transmission, the second clutch power conversion mechanism enables the brake loading device extension shaft, the second free sleeve synchronous belt pulley and the loading screw rod extension shaft to be in a non-transmission state, power is directly loaded to the tested screw rod, and the tested screw rod is in a positive transmission no-load state;
the first clutch power conversion mechanism enables a motor spindle to be connected with the transition shaft for transmission, the second clutch power conversion mechanism enables an extension shaft of the brake loading device to be connected with an extension shaft of the loading lead screw for transmission, and the tested lead screw is in a positive transmission loaded state;
the first clutch power conversion mechanism enables a motor spindle to be connected with and driven by the first idle synchronous belt pulley, the second clutch power conversion mechanism enables an extension shaft of the brake loading device, the second idle synchronous belt pulley and an extension shaft of the loading screw rod to be in a non-transmission state, power is transmitted to the tested screw rod through the middle main shaft system and the loading screw rod, and the tested screw rod is in a reverse transmission no-load state;
the first clutch power conversion mechanism enables a motor spindle to be connected with the first hollow synchronous belt pulley for transmission, the second clutch power conversion mechanism enables a brake loading device extension shaft to be connected with a loading lead screw extension shaft for transmission, power is transmitted to a tested lead screw through the middle spindle system and the loading lead screw, and the tested lead screw is in a reverse transmission no-load state.
3. The ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading according to claim 1, wherein the first clutch power conversion mechanism comprises a first slidable clutch, a first non-slidable clutch and a shifting fork mechanism; the first slidable clutch is arranged on the motor spindle, the first non-slidable clutch is arranged on the transition shaft, and the shifting fork mechanism is used for driving the first slidable clutch and the first hollow synchronous pulley or the engagement and disengagement state of the first non-slidable clutch.
4. The ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading according to claim 1, wherein the second clutch power conversion mechanism comprises a second slidable clutch, a second non-engageable clutch and a shifting fork mechanism; the second slidable clutch is arranged on the main shaft of the brake loading device, the second non-slidable clutch is arranged on the extension shaft of the loading screw rod, and the shifting fork mechanism is used for driving the second slidable clutch and a second hollow sleeve synchronous belt wheel or the second non-slidable clutch to be in an engaged and separated state.
5. The platform for measuring the comprehensive performance of the ball screw pair capable of realizing forward and reverse transmission loading according to claim 3 or 4, wherein the shifting fork mechanism comprises a shifting fork, a pull rod and a pull rod barrel;
the shifting fork is connected with the pull rod, and the pull rod is arranged in the pull rod barrel and can slide along the pull rod barrel; and the pull rod barrel is provided with a limiting groove for limiting the moving distance of the pull rod.
6. The ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading according to claim 5, wherein a pull rod handle is arranged on the pull rod.
7. The ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading according to claim 5, wherein the pull rod barrel is provided with a fastening nut for fixing the pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110616164.7A CN113375717B (en) | 2021-06-02 | 2021-06-02 | Ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110616164.7A CN113375717B (en) | 2021-06-02 | 2021-06-02 | Ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113375717A CN113375717A (en) | 2021-09-10 |
| CN113375717B true CN113375717B (en) | 2022-12-13 |
Family
ID=77575521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110616164.7A Active CN113375717B (en) | 2021-06-02 | 2021-06-02 | Ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113375717B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852256A (en) * | 2014-01-14 | 2014-06-11 | 南京理工大学 | Reliability test device of ball screw pairs |
| CN109100139A (en) * | 2018-08-25 | 2018-12-28 | 南京理工大学 | A kind of lead screw pair transmission efficiency dynamic measurement device and its measurement method |
| CN110657987A (en) * | 2019-09-27 | 2020-01-07 | 山东博特精工股份有限公司 | High-speed axial loading test device for ball screw pair |
| CN110672318A (en) * | 2019-09-20 | 2020-01-10 | 南京理工大学 | Device and method for measuring transmission efficiency of ball screw pair based on power driving system |
| CN112504662A (en) * | 2019-08-26 | 2021-03-16 | 南京理工大学 | Device for measuring transmission efficiency of ball screw pair based on gear shifting mechanism |
| CN112504663A (en) * | 2019-08-26 | 2021-03-16 | 南京理工大学 | Method for measuring transmission efficiency of ball screw pair based on gear transmission |
-
2021
- 2021-06-02 CN CN202110616164.7A patent/CN113375717B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852256A (en) * | 2014-01-14 | 2014-06-11 | 南京理工大学 | Reliability test device of ball screw pairs |
| CN109100139A (en) * | 2018-08-25 | 2018-12-28 | 南京理工大学 | A kind of lead screw pair transmission efficiency dynamic measurement device and its measurement method |
| CN112504662A (en) * | 2019-08-26 | 2021-03-16 | 南京理工大学 | Device for measuring transmission efficiency of ball screw pair based on gear shifting mechanism |
| CN112504663A (en) * | 2019-08-26 | 2021-03-16 | 南京理工大学 | Method for measuring transmission efficiency of ball screw pair based on gear transmission |
| CN110672318A (en) * | 2019-09-20 | 2020-01-10 | 南京理工大学 | Device and method for measuring transmission efficiency of ball screw pair based on power driving system |
| CN110657987A (en) * | 2019-09-27 | 2020-01-07 | 山东博特精工股份有限公司 | High-speed axial loading test device for ball screw pair |
Non-Patent Citations (1)
| Title |
|---|
| 《不同负载工况下双螺母滚珠丝杠副动态传动效率的试验研究*》;潘承莹等;《仪器仪表学报》;20210131;第42卷(第1期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113375717A (en) | 2021-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109100139B (en) | Dynamic measuring device and measuring method for transmission efficiency of screw pair | |
| CN103934723B (en) | A kind of ball-screw pretightning force and prestretched amount controllable adjustment and measurement mechanism | |
| CN103091102B (en) | A kind of robot speed reduction unit transmission performance comprehensive test device | |
| CN107271180B (en) | Planetary roller screw comprehensive loading test device | |
| CN108398262B (en) | Wet friction pair belt row torque test bed and test method | |
| CN103852256B (en) | A kind of ball screw assembly, reliability test | |
| CN110530637B (en) | Universal test platform for dynamic performance of planetary roller screw | |
| CN105445023A (en) | Static index testing platform and method for industrial robot joint decelerator | |
| CN109282726B (en) | Detection device for autonomously measuring inner diameter of deep hole | |
| CN108481359B (en) | Compact type rigidity-variable series elastic driving joint | |
| CN106441882B (en) | The two-way load-variable device and loading method of planetary roller screw pair | |
| CN111521392B (en) | Ball and rolling linear guide rail reverser friction torque detection device | |
| CN110864898B (en) | High-power bevel gear comprehensive performance test bed capable of being quickly replaced and assembled | |
| CN205479310U (en) | Novel manual governing operating mechanism of belt formula separation cone pulley buncher | |
| CN108061539A (en) | A kind of auto parts and components processing concentricity detection device | |
| CN110672318A (en) | Device and method for measuring transmission efficiency of ball screw pair based on power driving system | |
| CN113375717B (en) | Ball screw pair comprehensive performance measuring platform capable of realizing forward and reverse transmission loading | |
| CN109029984B (en) | Four-gear conversion measuring mechanism suitable for ball screw pair | |
| CN101561258B (en) | Three-dimensional body dimension automatic measuring mechanism | |
| CN208833503U (en) | A kind of lead screw pair transmission efficiency dynamic measurement device | |
| CN215931283U (en) | Quick connecting device of robot joint reduction gear test equipment | |
| CN112504663A (en) | Method for measuring transmission efficiency of ball screw pair based on gear transmission | |
| CN114813112A (en) | Reliability test bed for running-in test of arc guide rail | |
| CN112504662A (en) | Device for measuring transmission efficiency of ball screw pair based on gear shifting mechanism | |
| CN112083078B (en) | Tool for measuring Doppler laser probe of magnetic pulse welding speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |