CN214010606U - Ball efficiency test equipment - Google Patents
Ball efficiency test equipment Download PDFInfo
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- CN214010606U CN214010606U CN202023295701.2U CN202023295701U CN214010606U CN 214010606 U CN214010606 U CN 214010606U CN 202023295701 U CN202023295701 U CN 202023295701U CN 214010606 U CN214010606 U CN 214010606U
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Abstract
The utility model discloses a ball efficiency test equipment, include: the device comprises a bottom plate, a screw rod drawing and pressing device, a screw rod loading device, a screw rod fixing tailstock, a screw rod fixing structure, a screw rod rotation driving mechanism, a displacement testing mechanism and a control device, wherein the screw rod drawing and pressing device and the screw rod fixing tailstock are arranged on the bottom plate in a sliding mode; the screw nut fixing structure is arranged on a screw nut of the ball screw to be tested during testing, the screw nut rotation driving mechanism drives the screw nut to rotate through the screw nut fixing structure, and the displacement testing mechanism tests the displacement of a screw rod in the ball screw to be tested through the screw rod tension and compression device. The utility model discloses a push away, the pulling force is to the load of lead screw, has effectively guaranteed the accuracy of the efficiency of ball when just reversing.
Description
Technical Field
The utility model relates to a ball tests technical field, in particular to ball efficiency test equipment.
Background
Because the absolute hundred percent concentricity of the loading end and the rotating end cannot be ensured in the manufacturing process of the existing ball screw testing equipment, and certain errors exist in the operation process of the slide block in the guide rail, if rigid connection is adopted during loading, the efficiency of a part of parts is lost, and the efficiency of the tested parts is low.
Therefore, the applicant filed a new utility model patent application with application publication No. CN111060311A, entitled "an improved ball screw efficiency testing tool" to the national intellectual property office in 2019, 12 and 25 months. The utility model provides an improvement type ball screw efficiency test fixture includes bottom plate, base, guide rail, lead screw connecting device, rotating electrical machines, shaft coupling, torque sensor, first loading support, displacement sensor, loading thick stick, pressure sensor, second loading support, spring loading device and electric drive mechanism. A tester installs the ball screw to be tested on the screw rod connecting device and clamps the ball screw, and simultaneously moves the first loading support to the direction of the ball screw to be tested, so that the loading lever is connected with a nut in the ball screw to be tested. Then inputting parameters needing to be tested on a display screen to start the test. After the test is started, the control device drives the electric driving mechanism to act to push the second loading support to move towards the first loading support, and the spring loading device on the second loading support tests the axial load loaded on the ball screw to be tested through the pressure sensor, the loading lever, the polyurethane core adjusting lever and the nut connecting sleeve. The flexible loading device has the advantages that the flexible loading device can ensure that the main shaft of the rotating motor is jumped within 5 microns in actual assembly, the flexible loading device is concentric with the loading part, the guide rail is kept to flexibly run and flexibly load, the efficiency of a tested part is within a required range, the aligning lever of the flexible loading device is made of a polyurethane material, the flexible loading device is high in strength, good in toughness and good in reducibility, the flexible loading device is basically not deformed after loading, the concentric requirement on testing equipment is not high after the flexible loading device is mainly adopted, and the efficiency loss of the part is greatly reduced.
But this improvement type ball efficiency test fixture can not test ball's transmission efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a ball efficiency test equipment that can test ball's transmission efficiency, especially long ball's transmission efficiency tests is provided.
The utility model discloses the technical problem that will solve can realize through following technical scheme:
a ball screw efficiency testing apparatus comprising:
a base plate;
the lead screw pulling and pressing device is arranged on the bottom plate in a sliding mode;
the lead screw loading device is arranged on the bottom plate and is used for axially loading the ball screw to be tested through the lead screw pulling and pressing device;
the lead screw fixing tailstock is arranged on the base in a sliding mode, and the lead screw fixing tailstock and the lead screw pulling and pressing device are coaxially and oppositely arranged;
a nut fixing structure which is arranged on and fixedly connected with the nut of the ball screw to be tested during testing;
the nut rotation driving mechanism is arranged on the bottom plate and drives a nut to rotate through the nut fixing structure during testing;
the displacement testing mechanism is arranged on the bottom plate and is connected with the lead screw tension and compression device, and the lead screw tension and compression device is used for testing the displacement of a lead screw in a ball screw to be tested;
and the control device is in signal and control connection with the lead screw pulling and pressing device, the lead screw loading device, the nut rotation driving mechanism and the displacement testing mechanism.
In a preferred embodiment of the present invention, a first guide rail and a second guide rail are disposed on the bottom plate, the first guide rail and the second guide rail are axially disposed opposite to each other, a first slider is slidably disposed on the first guide rail, a second slider is slidably disposed on the second guide rail, the lead screw pulling and pressing device is fixed on the first slider, and the lead screw fixing tailstock is fixed on the second slider.
In a preferred embodiment of the present invention, the screw rod pulling and pressing device includes a fixed mounting on the first slider, a pulling and pressing cylinder fixed support mounted on the first slider, a pulling and pressing cylinder mounted on the pulling and pressing cylinder fixed support, a pulling and pressing sensor mounted on the end of a piston rod of the pulling and pressing cylinder, and a regulating nut mounting head mounted on the pulling and pressing cylinder, the pulling and pressing cylinder is in control connection with the control device, the pulling and pressing sensor is in signal connection with the control device, and during testing, the regulating nut mounting head is fixedly connected with one end of a screw rod of a ball screw to be tested.
In a preferred embodiment of the present invention, the screw loading device includes a servo electric cylinder fixing bracket fixedly mounted on the bottom plate, a servo electric cylinder mounted on the servo electric cylinder fixing bracket, and a loading head fixed on an output shaft of the servo electric cylinder, the loading head is connected to the tension/compression air cylinder fixing support, and the servo electric cylinder is in control connection with the control device; during testing, the servo electric cylinder drives the loading head to move linearly to load the fixed support of the tension and compression air cylinder.
In a preferred embodiment of the present invention, the displacement testing mechanism comprises a displacement sensor, the position sensor is connected with the tension and compression cylinder fixing support and connected with the control device through signals, so as to test the displacement of the tension and compression cylinder fixing support.
In a preferred embodiment of the present invention, a driven wheel is fixed on the nut fixing structure, the nut rotation driving mechanism includes a servo motor fixing bracket fixed on the bottom plate, a servo motor mounted on the servo motor fixing bracket, a torque sensor connected to an output shaft of the servo motor, and a driving wheel connected to the torque sensor through a coupling, and the driving wheel and the driven wheel transmit power through a transmission belt; the servo motor is in control connection with the control device, and the torque sensor is in signal connection with the control device.
Since the technical scheme as above has been adopted, the utility model discloses specially to ball (long) transmission efficiency's test, should guarantee in assembly and manufacture process that the axle of screw slewing drive mechanism beats within 5um to guarantee that screw fixed knot constructs and lead screw connection and loading part are concentric, keep the nimble operation of guide rail, the sensor is regularly calibrated, guarantees that data acquisition is accurate. The utility model discloses a push away, the pulling force is to the load of lead screw, has effectively guaranteed the accuracy of the efficiency of ball when just reversing.
Drawings
Fig. 1 is a front view of the ball screw transmission efficiency testing apparatus of the present invention.
Fig. 2 is the utility model discloses ball screw drive efficiency test equipment's top view.
Fig. 3 is an axial view of the ball screw transmission efficiency testing apparatus of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 3, the ball screw efficiency testing apparatus shown therein includes: the device comprises a bottom plate 15, a lead screw drawing and pressing device 2, a lead screw loading device 16, a lead screw fixing tailstock 9, a nut fixing structure 8, a nut rotation driving mechanism 17, a displacement testing mechanism 18 and a control device (not shown in the figure).
A first rail 6 and a second rail 19 are provided on the bottom plate 15, the first rail 6 and the second rail 19 are provided axially opposite to each other, a first slider 20 is slidably disposed on the first rail 6, a second slider 21 is slidably disposed on the second rail 19, and the screw fixing tailstock 9 is fixed to the second slider 21.
The lead screw tension and compression device 2 comprises a tension and compression cylinder fixing support 22 fixedly installed on the first sliding block 20, a tension and compression cylinder 23 installed on the tension and compression cylinder fixing support 22, a tension and compression sensor 3 fixed at the tail end of a piston rod of the tension and compression cylinder 23 and an adjusting nut installing head 4 fixed and fixedly connected with the tension and compression sensor 3, the tension and compression cylinder 23 is in control connection with a control device, the control device controls the tension and compression cylinder 23 to act, and a lead screw 24 in a ball lead screw 5 to be tested is pushed and pulled. The tension and pressure sensor 3 is in signal connection with the control device, and is used for testing the pushing force and the pulling force applied on the screw 24 by the screw tension and pressure device 2 and transmitting the pushing force and the pulling force to the control device.
The screw rod tension and compression device 2 and the screw rod fixing tailstock 9 are both arranged on the bottom plate 15 in a sliding mode, so that the screw rod tension and compression device is suitable for ball screws 5 of different specifications, and especially for testing long ball screws.
The screw rod loading device 16 comprises a servo electric cylinder fixing support 26 fixedly arranged on the bottom plate 15, a servo electric cylinder 1 arranged on the servo electric cylinder fixing support 26 and a loading head 27 fixed on an output shaft of the servo electric cylinder 1, wherein the loading head 27 is connected with the tension and compression air cylinder fixing support 22, the servo electric cylinder 1 is in control connection with a control device, and the servo electric cylinder 1 is controlled to act through the control device. During testing, the servo electric cylinder 1 drives the loading head 27 to move linearly to load the fixed support 22 of the tension and compression air cylinder.
The displacement testing mechanism 18 comprises a displacement sensor 10 and a displacement sensor mounting bracket 28, wherein the displacement sensor 10 is mounted on the bottom plate 15 through the displacement sensor mounting bracket 28 and connected with the tension and compression cylinder fixing support 22 for testing the displacement of the tension and compression cylinder fixing support 22. The displacement sensor 10 is also in signal connection with a control device, and transmits a displacement value signal of the tension and compression cylinder fixing support 22 to the control device.
The nut rotation driving mechanism 17 comprises a servo motor fixing support 29 fixed on the bottom plate 15, a servo motor 14 arranged on the servo motor fixing support 29, a torque sensor 13 connected with an output shaft of the servo motor 14, and a driving wheel 11 connected with the torque sensor 13 through a coupler 12. The servo motor 14 is connected with the control device in a control way, the servo motor 1 is controlled to operate by the control device, and the torque sensor 13 is connected with the control device in a signal way and transmits a torque value signal output by the servo motor 1 to the control device.
A driven wheel 7 is fixed on the nut fixing structure 8, and during testing, the driving wheel 11 transmits power to the driven wheel 7 through a transmission belt. The driving wheel 11 and the driven wheel 7 can be synchronous pulleys, and the transmission belt is a synchronous belt.
The nut 29 is driven by the nut rotating driving mechanism 17 and the nut fixing structure 8, so that the ball screw 5 to be tested can be conveniently installed.
The test method based on the ball screw transmission efficiency test equipment comprises the following steps:
step 1: before testing, checking whether all parts of the ball screw transmission efficiency testing equipment are normal, and if so, entering the step 2: .
Step 2: the ball screw 5 is installed:
step 2.1: one end of a screw 24 in a ball screw 5 to be tested is fixed on an adjusting nut mounting head 4 of a screw tension and compression device 2, and the other end of the screw is fixed on a screw fixing tail seat 9;
step 2.2: fixing the nut fixing structure 8 on a nut 25 of a ball screw 24 to be tested, and then sleeving a transmission belt on the driving wheel 11 and the driven wheel 7 and adjusting the transmission belt;
and step 3: inputting parameters to be tested through a display screen on the control device, and then starting testing;
and 4, step 4: in the test process, the pushing force or the pulling force of the screw 24 is adjusted through the screw pulling and pressing device 2, and the load of the screw 25 is adjusted through the screw loading device 16; when the pushing force or the pulling force and the load reach specified values, a servo motor 14 of a nut rotation driving mechanism 17 is started, the servo motor 14 drives a nut 25 to rotate forward and backward through a torque sensor 13, a coupler 12, a driving wheel 11, a driving belt, a driven wheel 7 and a nut fixing structure 8, a lead screw 24 is displaced, a displacement sensor 10 in a displacement testing mechanism 18 inputs a measured displacement value into a control device, and a display screen of the control device reads a real-time transmission efficiency value. And a display screen of the control device displays parameter values and curves in the test process, wherein the parameter values comprise but are not limited to torque, displacement, loading force, rotating speed and the like, and are recorded and stored.
Claims (6)
1. A ball screw efficiency testing apparatus comprising: a backplane, comprising:
the lead screw pulling and pressing device is arranged on the bottom plate in a sliding mode;
the lead screw loading device is arranged on the bottom plate and is used for axially loading the ball screw to be tested through the lead screw pulling and pressing device;
the lead screw fixing tailstock is arranged on the base in a sliding mode, and the lead screw fixing tailstock and the lead screw pulling and pressing device are coaxially and oppositely arranged;
a nut fixing structure which is arranged on and fixedly connected with the nut of the ball screw to be tested during testing;
the nut rotation driving mechanism is arranged on the bottom plate and drives a nut to rotate through the nut fixing structure during testing;
the displacement testing mechanism is arranged on the bottom plate and is connected with the lead screw tension and compression device, and the lead screw tension and compression device is used for testing the displacement of a lead screw in a ball screw to be tested;
and the control device is in signal and control connection with the lead screw pulling and pressing device, the lead screw loading device, the nut rotation driving mechanism and the displacement testing mechanism.
2. The ball screw efficiency testing apparatus according to claim 1, wherein a first rail and a second rail are provided on the bottom plate, the first rail and the second rail are axially disposed opposite to each other, a first slider is slidably disposed on the first rail, a second slider is slidably disposed on the second rail, the screw pulling and pressing device is fixed to the first slider, and the screw fixing tailstock is fixed to the second slider.
3. The ball screw efficiency testing device according to claim 2, wherein the screw pulling and pressing device comprises a pulling and pressing cylinder fixing support fixedly mounted on the first slider, a pulling and pressing cylinder mounted on the pulling and pressing cylinder fixing support, a pulling and pressing force sensor fixed on the end of a piston rod of the pulling and pressing cylinder, and an adjusting nut mounting head fixedly connected with the pulling and pressing force sensor, the pulling and pressing cylinder is in control connection with the control device, the pulling and pressing force sensor is in signal connection with the control device, and during testing, the adjusting nut mounting head is fixedly connected with one end of a screw in the ball screw to be tested.
4. The ball screw efficiency testing apparatus according to claim 3, wherein the screw loading device comprises a servo electric cylinder fixing bracket fixedly mounted on the base plate, a servo electric cylinder mounted on the servo electric cylinder fixing bracket, and a loading head fixed on an output shaft of the servo electric cylinder, the loading head is connected with the tension/compression air cylinder fixing support, and the servo electric cylinder is in control connection with the control device; during testing, the servo electric cylinder drives the loading head to move linearly to load the fixed support of the tension and compression air cylinder.
5. The ball screw efficiency testing apparatus of claim 4, wherein the displacement testing mechanism comprises a displacement sensor, and the position sensor is connected with the tension and compression cylinder fixing support and is in signal connection with the control device for testing the displacement of the tension and compression cylinder fixing support.
6. The ball screw efficiency testing device according to claim 5, wherein a driven wheel is fixed on the nut fixing structure, the nut rotation driving mechanism comprises a servo motor fixing support fixed on the bottom plate, a servo motor installed on the servo motor fixing support, a torque sensor connected with an output shaft of the servo motor, and a driving wheel connected with the torque sensor through a coupling, and the driving wheel and the driven wheel transmit power through a transmission belt; the servo motor is in control connection with the control device, and the torque sensor is in signal connection with the control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023295701.2U CN214010606U (en) | 2020-12-30 | 2020-12-30 | Ball efficiency test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023295701.2U CN214010606U (en) | 2020-12-30 | 2020-12-30 | Ball efficiency test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214010606U true CN214010606U (en) | 2021-08-20 |
Family
ID=77293772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023295701.2U Active CN214010606U (en) | 2020-12-30 | 2020-12-30 | Ball efficiency test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214010606U (en) |
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2020
- 2020-12-30 CN CN202023295701.2U patent/CN214010606U/en active Active
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