CN201514297U - Test set for friction force dynamic process - Google Patents
Test set for friction force dynamic process Download PDFInfo
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- CN201514297U CN201514297U CN2009200336619U CN200920033661U CN201514297U CN 201514297 U CN201514297 U CN 201514297U CN 2009200336619 U CN2009200336619 U CN 2009200336619U CN 200920033661 U CN200920033661 U CN 200920033661U CN 201514297 U CN201514297 U CN 201514297U
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Abstract
The utility model relates to a test set for a friction force dynamic process, in the technical scheme, a motor coupling (7) is connected with a servo motor (6). The two ends of a torsion-bar spring (8) are respectively connected with the motor coupling (7) and a sensor coupling (9); and the input end and the output end of a torque sensor (10) are respectively connected with the sensor coupling (9) and a spline shaft coupling (12). The two ends of a connecting shaft (13) are respectively connected with a piece (15) to be tested and the spline shaft coupling (12). When the torque elastic deformation of the torsion-bar spring (8) has good linear relationship with the torque, the precision is 0.1 percent. Because the utility model is added with the torsion-bar spring, part vibration and displacement of the servo motor are absorbed, so the dynamic testing precision of the friction force can reach 0.3 percent. The utility model has simple structure and convenient operation, and can be used for testing the dynamic variation process of the static and kinetic friction forces and the friction force of an arbitrary point of various mechanisms which are used to rotatably input or output.
Description
One, technical field
The present invention relates to the friction testing field of Machine Design, specifically is a kind of friction dynamic process proving installation.
Two, background technology
Disclosing a kind of axle in the patent No. is 200720089567.6 patent application document is friction torque testing instrument.As shown in Figure 4, this tester comprises that servomotor 6, synchronous cog belt 17, photoelectric encoder 18, supports main shaft 19, table top 2, chuck 20, column guide rail 22, torque sensor 10 and measured axis are 21 compositions.This instrument can realize that to axle be friction torque test, but the moment of friction of measurand can't be measured moment of friction static change process when very little; The tested object of this instrument has certain limitation simultaneously, can only test at axle system.
Disclose a kind of little friction testing device in the patent No. is 02226928.2 utility model patent, its friction testing precision is 0.5Nm, and measuring accuracy is difficult to satisfy the high-precision friction test request.
Analyze by prior art documents, find present friction testing device, the tested object scope is little; Test process mainly is that the test kinetic force of friction changes, fail accurate testing friction power by static state to dynamic whole variation process; The measuring accuracy that also is difficult to simultaneously to test the quiet kinetic force of friction of each specified point of measurand and friction force is relatively low.Along with the diversification of friction testing object, the integrality of test process requires and measuring accuracy such as significantly improves at requirement, and present various friction testing devices or instrument can't satisfy test request.
Three, summary of the invention
For overcome exist in the prior art or can't measure moment of friction and survey the static change process, perhaps the relatively low deficiency of measuring accuracy the present invention proposes a kind of friction dynamic process proving installation.
The present invention is used for the high-precision friction dynamic process proving installation, comprises stand, power part and measured piece fixture component.The table top middle part of stand is fixed with positioning strip, and power part and measured piece fixture component distribute and be positioned at the both sides of positioning strip.
The present invention includes stand, power part, measured piece fixture component and control system; The table top middle part of stand is fixed with positioning strip, and power part and measured piece fixture component are positioned at the both sides of positioning strip; Control system comprises Industrial Control Computer computing machine, multi-axis motion controller and servo-driver; The signal output cable of torque sensor links to each other with multi-axis motion controller terminal block analog quantity AD data acquisition mouth.
Stand comprises support, table top and positioning strip.Positioning strip is fixed on the table top upper surface middle part along the Width of table top; Upper surface at table top has a pair of T-slot, and this T-slot is positioned at positioning strip one side, and vertical with positioning strip.
Power part comprises power part bearing, servomotor and motor supporting seat, motor coupler, torsion-bar spring, sensor shaft coupling, torque sensor and bearing thereof.The power part bearing is fixed on a side of the positioning strip that is positioned on the table top, and the motor supporting seat is fixed on power part bearing one end upper surface.
Servomotor and motor coupler lay respectively at the vertical support plate both sides of motor supporting seat, and an end of motor coupler is connected with the output shaft of servomotor by the connecting hole on the motor supporting seat.The axostylus axostyle at torsion-bar spring two ends is connected with the capsule shaft coupling with motor coupler respectively; Sensor support base is fixed on power part bearing other end upper surface; Torque sensor fixation of sensor bearing top, the sensor shaft coupling is connected with the torque sensor input end, torque sensor output termination splined shaft axial organ.Torsion-bar spring elastic deformation and torque are linear relationship, and precision is 0.1%.The torque sensor precision is 0.1%.When the suffered moment of torsion of torsion-bar spring was not more than 1Nm, elastic deformation and torque were linear relationship, and precision is 0.1%.
The measured piece fixture component comprises coupling shaft, measured piece, fixed mount and measured piece bearing.The measured piece bearing is positioned at the opposite side of positioning strip, is fixed on the fixed mount.The two ends of coupling shaft are connected with the splined shaft shaft coupling with measured piece respectively.The measured piece fixed mount is fixed on the upper surface of measured piece bearing.
Characteristics of the present invention are:
1, in proving installation of the present invention, owing to increased torsion-bar spring, servomotor vibrations and displacement are all partially absorbed by torsion-bar spring, and the stiction of tested mechanism and the dynamic changing process of kinetic force of friction have obtained accurate measurement.
2, can test accurately that axle system, bearing, gear pair, the lead screw pair of different model and other are any the quiet kinetic force of friction of the mechanism arbitrfary point that rotation inputs or outputs and a dynamic changing process of friction force.
3, proving installation of the present invention is simple in structure, and is easy to operate, only needs a people can finish experimental test fast, and the dynamic test precision to friction force can reach 0.3% simultaneously.If the torque sensor range is 1Nm, measuring accuracy is 0.003Nm; If the torque sensor range is 0.1Nm, measuring accuracy is 0.0003Nm.Choose more high-precision torque sensor, then the test of friction force is more accurate.
Four, description of drawings
The present invention is directed to the deficiencies in the prior art and defective, a kind of high-precision friction dynamic checkout unit is provided.Because the present invention has increased torsion-bar spring in the middle of servomotor and torque sensing, the servomotor vibrations have been eliminated and to the buffering of initial displacement and torque, thereby test measured piece friction force that can be complete is by the overall process of static state to dynamic dynamic change, can reach 0.3% to this device friction testing precision simultaneously and be applicable to and comprise various axle systems, bearing, gear pair, lead screw pair and other any mechanism that has rotation to input or output.
Fig. 1 is a lead screw pair friction force dynamic test front view;
Fig. 2 is a lead screw pair friction force dynamic test vertical view;
Fig. 3 is the torsion-bar spring front view;
Fig. 4 is the structural representation of friction dynamic process proving installation control system.Among the figure:
1. stand 2. table tops 3. positioning strips 4. power part bearings 5. motor supporting seats 6. servomotors
7. motor coupler 8. torsion-bar spring 9. sensor shaft couplings 10. torque sensors 11. sensor support bases
Five, embodiment
12. splined shaft shaft coupling 13. coupling shafts 14. measured piece fixed mounts 15. measured pieces 16. measured piece bearings
17. synchronous cog belt 18. photoelectric encoders 19. supports main shaft 20. chucks 21. measured axises are 22. column guide rails
Embodiment one
Present embodiment is the device that is used to test the lead screw pair friction dynamic process, comprises stand, power part, measured piece fixture component and control system.
As shown in Figure 1 and Figure 2, stand comprises support 1, table top 2 and positioning strip 3, and support 1 fixes with ground, and table top 2 is fixed on the support 1.End face is that the strip positioning strip 3 of rectangle is fixed on table top 2 upper surface middle part along the Width of table top 2; Upper surface at table top 2 has a pair of T-slot, and this T-slot is positioned at positioning strip 3 one sides, and vertical with positioning strip 3.
Power part comprises power part bearing 4, servomotor 6 and motor supporting seat 5, motor coupler 7, torsion-bar spring 8, sensor shaft coupling 9, torque sensor 10 and bearing 11 thereof.Wherein power part bearing 4 is the square cast iron platform that the loss of weight groove is arranged at a bottom.Motor supporting seat 5 is L shaped; At the vertical support plate middle part of motor supporting seat 5, the via hole of servo motor shaft is arranged; On motor supporting seat 5 horizontal support plates, be distributed with the mounting hole of this motor supporting seat.Motor coupler 7 is a positive coupling.Torsion-bar spring 8 is elastic mechanisms made from 45CrMn, and its two ends are the axostylus axostyles that are connected with shaft coupling, and the diameter of this axostylus axostyle is with the connecting hole of shaft coupling; The length of torsion-bar spring 8 should be able to be connected the motor coupler 7 that is fixed on the motor supporting seat 5 with sensor shaft coupling 9 on being fixed on torque sensor 10; Torsion-bar spring 8, elastic deformation and torque are linear relationship, and precision is 0.1%.Torque sensor 10 is a finished parts, and precision is 0.1%.The bearing 11 of torque sensor 10 is a rectangle, is fixed on the power part bearing 4.
Described power part bearing 4 is fixed on a side of the positioning strip 3 that is positioned on the table top 2, and motor supporting seat 5 is fixed on power part bearing 4 one end upper surfaces.Servomotor 6 is fixed on motor supporting seat 5 outsides; Motor coupler 7 is positioned at motor supporting seat 5 inboards, and an end is connected with the output shaft of servomotor 6 by the connecting hole on the motor supporting seat 5, and the other end is connected 9 by torsion-bar spring 8 with the sensor shaft coupling, and wherein sensor shaft coupling 9 is a diaphragm type.Sensor support base 11 is fixed on power part bearing 4 other end upper surfaces; Torque sensor 10 fixation of sensor bearings 11 tops, sensor shaft coupling 9 is connected with torque sensor 10 input ends, torque sensor 10 output termination splined shaft axial organs 12.Wherein power part is fixed on the stand 1 non-dismountable.
The measured piece fixture component comprises coupling shaft 13, measured piece 15, fixed mount 14 and measured piece bearing 16.
As shown in Figure 4, the control system of high-precision friction dynamic process proving installation comprises industrial computer, multi-axis motion controller and servo-driver.Wherein multi-axis motion controller comprises motion control card and terminal block, and motion control card is inserted in the industrial computer PCI slot; The signal output cable of torque sensor links to each other with multi-axis motion controller terminal block analog quantity AD data acquisition mouth.
Claims (3)
1. friction dynamic process proving installation is characterized in that:
A. described proving installation comprises stand (1), power part, measured piece fixture component and control system; The table top middle part of stand (1) is fixed with positioning strip (3), and power part and measured piece fixture component are positioned at the both sides of positioning strip (3); Control system comprises Industrial Control Computer computing machine, multi-axis motion controller and servo-driver; The signal output cable of torque sensor links to each other with multi-axis motion controller terminal block analog quantity AD data acquisition mouth.
B. power part comprises power part bearing (4), servomotor (6) and motor supporting seat (5), motor coupler (7), torsion-bar spring (8), sensor shaft coupling (9), torque sensor (10) and bearing (11) thereof; One end of motor coupler (7) is connected with the output shaft of servomotor (6) by the connecting hole on the motor supporting seat (5); The axostylus axostyle at torsion-bar spring (8) two ends is connected with capsule shaft coupling (9) with motor coupler (7) respectively; Sensor shaft coupling (9) is connected with torque sensor (10) input end, torque sensor (10) output termination splined shaft axial organ (12);
When c. the suffered moment of torsion of torsion-bar spring (8) was not more than 1Nm, elastic deformation and torque were linear relationship, and precision is 0.1%; The precision of torque sensor (10) is 0.1%;
D. the measured piece fixture component comprises coupling shaft (13), measured piece (15), fixed mount (14) and measured piece bearing (16); The two ends of coupling shaft (13) are connected with splined shaft shaft coupling (12) with measured piece (15) respectively.
2. a kind of according to claim 1 friction dynamic process proving installation is characterized in that: the servomotor in the power part (6) and motor coupler (7) lay respectively at the vertical support plate both sides of motor supporting seat (5); Power part bearing (4) is fixed on a side of the positioning strip (3) that is positioned on the table top (2), and motor supporting seat (5) is fixed on power part bearing (4) one end upper surfaces; Sensor support base (11) is fixed on power part bearing (4) other end upper surface; Torque sensor (10) fixation of sensor bearing (11) top.
3. a kind of according to claim 1 friction dynamic process proving installation is characterized in that: the measured piece bearing (16) in the measured piece fixture component is fixed on the fixed mount (14) of positioning strip (3) opposite side; Measured piece fixed mount (14) is fixed on the upper surface of measured piece bearing (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200336619U CN201514297U (en) | 2009-06-24 | 2009-06-24 | Test set for friction force dynamic process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200336619U CN201514297U (en) | 2009-06-24 | 2009-06-24 | Test set for friction force dynamic process |
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| CN201514297U true CN201514297U (en) | 2010-06-23 |
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| CN2009200336619U Expired - Fee Related CN201514297U (en) | 2009-06-24 | 2009-06-24 | Test set for friction force dynamic process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913665A (en) * | 2012-10-16 | 2013-02-06 | 天津德同液压技术有限公司 | Gas-controlled marching type pressure regulation device |
| CN102928217A (en) * | 2012-11-20 | 2013-02-13 | 浙江省泵阀产品质量检验中心 | Comprehensive test device for torsion-resistant and bending-resistant safe performance of valve |
| CN109540359A (en) * | 2019-01-16 | 2019-03-29 | 中国铁道科学研究院集团有限公司 | A kind of brake clamp unit brake plate support Lock spring torsion-testing apparatus |
| CN110441690A (en) * | 2019-09-12 | 2019-11-12 | 西北工业大学 | A kind of Miniature brushless motor test device and test method |
| CN112254961A (en) * | 2020-10-15 | 2021-01-22 | 哈尔滨工业大学 | High low temperature testing arrangement of transmission efficiency |
-
2009
- 2009-06-24 CN CN2009200336619U patent/CN201514297U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913665A (en) * | 2012-10-16 | 2013-02-06 | 天津德同液压技术有限公司 | Gas-controlled marching type pressure regulation device |
| CN102928217A (en) * | 2012-11-20 | 2013-02-13 | 浙江省泵阀产品质量检验中心 | Comprehensive test device for torsion-resistant and bending-resistant safe performance of valve |
| CN102928217B (en) * | 2012-11-20 | 2014-12-03 | 浙江省泵阀产品质量检验中心 | Comprehensive test device for torsion-resistant and bending-resistant safe performance of valve |
| CN109540359A (en) * | 2019-01-16 | 2019-03-29 | 中国铁道科学研究院集团有限公司 | A kind of brake clamp unit brake plate support Lock spring torsion-testing apparatus |
| CN110441690A (en) * | 2019-09-12 | 2019-11-12 | 西北工业大学 | A kind of Miniature brushless motor test device and test method |
| CN112254961A (en) * | 2020-10-15 | 2021-01-22 | 哈尔滨工业大学 | High low temperature testing arrangement of transmission efficiency |
| CN112254961B (en) * | 2020-10-15 | 2022-03-01 | 哈尔滨工业大学 | High low temperature testing arrangement of transmission efficiency |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20120624 |