CN202075120U - Variable-load service life tester for ball screw pair - Google Patents
Variable-load service life tester for ball screw pair Download PDFInfo
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- CN202075120U CN202075120U CN201120093239XU CN201120093239U CN202075120U CN 202075120 U CN202075120 U CN 202075120U CN 201120093239X U CN201120093239X U CN 201120093239XU CN 201120093239 U CN201120093239 U CN 201120093239U CN 202075120 U CN202075120 U CN 202075120U
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- ball screw
- screw assembly
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- electric motors
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Abstract
The utility model discloses a variable-load service life tester for a ball screw pair, which comprises a body, a linear guide rail, a linear motor, a servo motor and an industrial personal controller. The linear guide rail is mounted on the body, a permanent magnet assembly of the liner motor is fixed to the body, a coil assembly of the linear motor is disposed at the back of an operation table slidably connected with the linear guide rail, the coil assembly is capable of reciprocating linearly along the linear guide rail, the servo motor is fixed to the end of the body, an output shaft of the servo motor is connected with a ball screw pair to be tested through a coupling, a control signal input end of the servo motor is connected with the industrial personal computer, rotation speed of the servo motor is controlled by the industrial personal computer, the servo motor drives the ball screw pair to be tested to rotate, the operation table to which the coil assembly of the linear motor is fixed is rigidly connected with a nut holder, and a nut of the ball screw pair to be tested is disposed in the nut holder. The high-thrust linear motor is used for providing load, so that the loading problem when service life test is performed for the ball screw pair is well solved, response is fast, loading is convenient, and load of the linear motor can be easily adjusted.
Description
Technical field
The utility model relates to a kind of device that is used to test the ball screw assembly, life-span, specifically, the utility model relate to a kind of can arbitrarily change ball screw assembly, load size, the ball screw assembly, life test machine.
Background technology
For ball screw assembly, manufacturer, need grasp, mark the life-span of the ball screw assembly, of its production exactly, so that the user selects.
The life-span of ball screw assembly, comprises fatigue lifetime and accuracy life.
Can calculate fatigue lifetime according to the carrying condition of reality, mounting means etc., but prerequisite is the dynamic load rating that needs to determine ball screw assembly.Present dynamic load rating calculates according to Hertz theory, but since ball screw assembly, at aspects such as material, thermal treatment and process for machining equal property of there are differences, dynamic load rating that may every kind of ball-screw is all variant with calculated value.So, usually, calculate its theoretical fatigue lifetime according to formula earlier; Then, measure the dynamic load rating of ball screw assembly, more by experiment, calculate the fatigue lifetime of ball screw assembly; Then both are compared, find out rule and correction factor; At last, sum up life formula under the various conditions.
All have very big relation with the mounting means of ball screw assembly,, pretension, lubricated, carrying etc. accuracy life, also do not have unified formula to calculate at present, mainly is to estimate according to the test data of each producer.Want the measuring accuracy life-span must understand client's service condition, with these condition extremalizations, obtain an equivalent life-span, promptly reach the effect of " testing table was equivalent to the normal use of lathe 1 year in a day ", make the inherent vice of ball screw assembly, be excited out in the short period of time.
In order to calculate the fatigue lifetime of ball screw assembly, more exactly, and the accuracy life that tests out ball screw assembly,, the load mode of existing ball screw assembly, life test machine mainly contains three kinds:
First kind: utilize spring to realize, but spring is not a constant force in the process of elongation and compression, the elongate or shorten amount of spring under the situation that realizes two-way big load is very limited simultaneously, generally be no more than 500mm, it almost is impossible will doing the life-span test to the lead screw pair of stroke more than 1 meter like this.
Second kind: rely on traditional weight loading method to realize, the size of load when load is big, then needs to dispose many pouring weights or a quite heavy pouring weight by the weight decision of the pouring weight of configuration, and test unit is too huge, operates very inconvenient.
The third: adopt hydraulic pressure or pneumatic element that load is provided, but the capability of fast response of this element under high speed is not enough, can causes the moment of system to destroy.
Summary of the invention
In view of the foregoing, the purpose of this utility model provides a kind of load size that can arbitrarily change ball screw assembly,, the adjustable life test machine of ball screw assembly, load of big load can be provided.
Another purpose of the present utility model provides a kind of compact conformation, response speed is fast, can satisfy the adjustable life test machine of ball screw assembly, load of test table high speed to-and-fro movement requirement.
For achieving the above object, the utility model by the following technical solutions: the adjustable life test machine of a kind of ball screw assembly, load, it is characterized in that: it is made of lathe bed, line slideway, linear electric motors, servomotor, industrial computer;
Described line slideway is installed on the described lathe bed;
The permanent magnet assembly of described linear electric motors is installed on the described lathe bed, the coil assembly of described linear electric motors is arranged on the worktable that links to each other with the slide block of described line slideway, and the coil assembly of linear electric motors and worktable can be done straight reciprocating motion along described line slideway by slide block;
Be fixed with a described servomotor in the end of described lathe bed, the output shaft of this servomotor links to each other with tested ball screw assembly, by shaft coupling, and the signal input end of servomotor links to each other with described industrial computer;
The rotating speed of described industrial computer control servomotor, servomotor drive tested ball screw assembly, rotation;
The described worktable and the nut seat that are fixed with described linear motor coil assembly are rigidly connected, and the nut that is enclosed within on the tested ball screw assembly, is built in the described nut seat.
The adjustable life test machine of this ball screw assembly, load also comprises a grating chi, and this grating chi is fixed on the described lathe bed, and the coil assembly place of close described linear electric motors.
Also be provided with a safety collision device in the end of described lathe bed.
Described tested ball screw assembly, is arranged on the permanent magnet top of described linear electric motors.
Advantage of the present utility model: can arbitrarily change ball screw assembly, the load size, big load can be provided; Compact conformation, response speed are fast, can satisfy the reciprocating requirement of test table high speed.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1, the adjustable life test machine of ball screw assembly, load of the present invention mainly is made of lathe bed 1, line slideway 2, linear electric motors 3, servomotor 4, industrial computer 5 and grating chi 6.
Described line slideway 2 is installed on the lathe bed 1.The permanent magnet assembly of linear electric motors 3 is installed on the lathe bed 1, and its coil assembly is arranged on worktable 32 back sides that link to each other with line slideway 2 slide blocks 31.The coil assembly of linear electric motors 3 can be done straight reciprocating motion with worktable 32 along line slideway 2 by slide block 31.
Be fixed with a servomotor 4 in the end of lathe bed 1, the output shaft of this servomotor 4 links to each other with tested ball screw assembly, 7 by shaft coupling, and the signal input end of servomotor 4 links to each other with industrial computer 5.The rotating speed of industrial computer 5 control servomotors 4, servomotor 4 drive tested ball screw assembly, 7 rotations.
The worktable 32 that is fixed with linear electric motors 3 coil assemblies is rigidly connected with nut seat 8, and the nut on the tested ball screw assembly, 7 is built in the nut seat 8.When the tested ball screw assembly, 7 of servomotor 4 drives rotated, the coil assembly of linear electric motors 3 was by making the high speed linear reciprocating motion with nut seat 8 rigidly connected worktable 32 along line slideway 2.Linear electric motors 3 provide the resistance of motion as the load of tested ball screw assembly.
When utilizing the present invention that ball screw assembly, is carried out fatigue life test, calculate the dynamic load rating value of the ball screw assembly, of each specification earlier, then, calculate the rotating speed of servomotor, the dynamic load rating value that the resistant load that produces when making servomotor drive the linear electric motors to-and-fro movement by ball screw assembly, equals to calculate.Can industrial computer be according to servomotor rotating speed, the linear electric motors running-in number of times set, and the output control signal makes servomotor, ball screw assembly,, linear electric motors motion, test a collection of ball screw assembly, and 90% reach operation 1,000,000 times and do not have fatigue breakdown.If satisfy, then strengthen one grade, test again moves 1,000,000 times and till the fatigue breakdown up to the ball screw assembly, that occurs surpassing 10%; Otherwise, then reducing load, the load that records is dynamic load rating.Then, condition such as the load that provides according to the user, mounting means and the dynamic load rating that records calculate fatigue lifetime, and carry out corresponding durability test under identical conditions, and contrast difference is between the two revised related coefficient.After several groups of tests, just can sum up correction factor, just passable as long as similar products like is calculated.
When utilizing the present invention that tested the accuracy life of ball screw assembly,, accuracy requirement according to the client, ball screw assembly, is loaded running-in, the stroke accuracy of routine test ball screw assembly,, till the precision forfeiture appearred in ball screw assembly,, be the accuracy life of this batch ball screw assembly, total working time.According to the equivalent conversion relation, convert out the accuracy life of normal use then.
As shown in Figure 1, the present invention is stored in control program in the motion control card 51 that is installed in the industrial computer 5, the running of control servomotor, and servomotor drives tested ball screw assembly, rotation, and then drives the linear electric motors to-and-fro movement.The present invention can also be by programming, and with the basic parameter of ball screw assembly,, the running-in number of times is presented on the display 52 of industrial computer 5, is convenient to operator's operation.
In order to control linear electric motors better, the utility model also is provided with safety collision device 9 in the end of lathe bed 1, prevents because the personal injury that program out of control causes.
In order to reduce volume of the present utility model, the utility model is arranged on the top of linear electric motors with tested ball screw assembly,, thereby makes the more compact structure of whole life test machine.
The utility model adopts the high thrust linear electric motors that load is provided, and has solved the loading problem when ball screw assembly, is carried out life test well, and, add carried convenient, adjust the size of linear electric motors load at an easy rate by the electric current of adjusting servomotor.When big load can be provided, can also respond fast, satisfy the reciprocating requirement of test table high speed, compact conformation.
The utility model can testing length 2200mm with interior ball screw assembly,, effective travel is greater than 2000mm, line of motion speed can reach 80m/min, adjustable load reaches 1000Kg.The running-in number of times of lead screw pair can be set simultaneously, show speed, acceleration, the load of bearing, the stroke variable quantity of lead screw pair in real time.And has Stroke Control, spacing firmly, safety protection functions such as safety collision device.
More than for preferred embodiment of the present utility model and design graphicly, above-mentioned preferred embodiment and designing graphicly only illustrates, and is not to be used to limit interest field of the present utility model.Anyly do not break away from spirit of the present utility model and category, and, all should be contained in accompanying the application's claim its equivalent modifications of carrying out or change.
Claims (4)
1. adjustable life test machine of ball screw assembly, load, it is characterized in that: it is made of lathe bed, line slideway, linear electric motors, servomotor, industrial computer;
Described line slideway is installed on the described lathe bed;
The permanent magnet assembly of described linear electric motors is installed on the described lathe bed, the coil assembly of described linear electric motors is arranged on the worktable that links to each other with the slide block of described line slideway, and the coil assembly of linear electric motors and worktable can be done straight reciprocating motion along described line slideway by slide block;
Be fixed with a described servomotor in the end of described lathe bed, the output shaft of this servomotor links to each other with tested ball screw assembly, by shaft coupling, and the signal input end of servomotor links to each other with described industrial computer;
The rotating speed of described industrial computer control servomotor, servomotor drive tested ball screw assembly, rotation;
The described worktable and the nut seat that are fixed with described linear motor coil assembly are rigidly connected, and the nut that is enclosed within on the tested ball screw assembly, is built in the described nut seat.
2. the adjustable life test machine of ball screw assembly, load according to claim 1, it is characterized in that: the adjustable life test machine of this ball screw assembly, load also comprises a grating chi, this grating chi is fixed on the described lathe bed, and the coil assembly place of close described linear electric motors.
3. the adjustable life test machine of ball screw assembly, load according to claim 2 is characterized in that: also be provided with a safety collision device in the end of described lathe bed.
4. the adjustable life test machine of ball screw assembly, load according to claim 3 is characterized in that: described tested ball screw assembly, is arranged on the permanent magnet top of described linear electric motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120093239XU CN202075120U (en) | 2011-04-01 | 2011-04-01 | Variable-load service life tester for ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120093239XU CN202075120U (en) | 2011-04-01 | 2011-04-01 | Variable-load service life tester for ball screw pair |
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| Publication Number | Publication Date |
|---|---|
| CN202075120U true CN202075120U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120093239XU Expired - Fee Related CN202075120U (en) | 2011-04-01 | 2011-04-01 | Variable-load service life tester for ball screw pair |
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| CN (1) | CN202075120U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589870A (en) * | 2012-03-11 | 2012-07-18 | 东华大学 | System for testing service life of special straight reciprocating motion mechanism |
| CN104122087A (en) * | 2014-08-15 | 2014-10-29 | 上海理工大学 | Ball screw performance experiment table driven by linear motor |
| CN104266837A (en) * | 2014-10-08 | 2015-01-07 | 上海理工大学 | Ball screw performance testing testbed based on motor servo loading |
| CN106092563A (en) * | 2016-05-31 | 2016-11-09 | 清华大学 | Plane two degrees of freedom high frequency charger and test platform for ball screw assembly, |
| CN107167312A (en) * | 2016-03-08 | 2017-09-15 | 天津爱安特精密机械有限公司 | A kind of Linear transmission product fatigue life test machine |
| CN107702900A (en) * | 2017-08-31 | 2018-02-16 | 北京精密机电控制设备研究所 | A kind of cylindrical compression spring load test method and system |
| CN107831010A (en) * | 2017-10-11 | 2018-03-23 | 北京精密机电控制设备研究所 | A kind of electromechanical actuator ball-screw fault monitoring system |
| CN108020411A (en) * | 2017-12-28 | 2018-05-11 | 无锡顶点医疗器械有限公司 | A kind of device for being used to detect drive rod fatigue durability |
| CN108072519A (en) * | 2018-01-09 | 2018-05-25 | 哈尔滨工业大学 | A kind of novel analog heavy duty radar line slideway auxiliary comparative trial of life-span device |
| CN108303252A (en) * | 2018-05-09 | 2018-07-20 | 济宁市微科特机械制造有限责任公司 | A kind of ball-screw accelerating lifetime testing device |
| CN109015601A (en) * | 2018-08-28 | 2018-12-18 | 冯亿坤 | A kind of rectilinear motion control device of the PIV tank experiments for Biomimetic Fish Fin |
| CN109342101A (en) * | 2018-12-03 | 2019-02-15 | 湖南科技大学 | A kind of Height-adjustable fatigue tester |
| CN109443751A (en) * | 2018-12-17 | 2019-03-08 | 沈阳理工大学 | A kind of multi-functional running in machine being applicable in Multiple Type ball screw assembly, |
| CN109883711A (en) * | 2019-03-25 | 2019-06-14 | Oppo（重庆）智能科技有限公司 | A kind of detection jig |
| CN110411879A (en) * | 2018-04-28 | 2019-11-05 | 三菱电机上海机电电梯有限公司 | Elevator gate guide shoe wear test device and test method |
| CN110618029A (en) * | 2019-08-29 | 2019-12-27 | 南京理工大学 | Method for testing fatigue elastic life of ball screw pair under extreme load extremely short time working condition |
| CN113820128A (en) * | 2021-11-09 | 2021-12-21 | 中国船舶重工集团公司第七0四研究所 | High-speed planet roller lead screw performance running-in device |
-
2011
- 2011-04-01 CN CN201120093239XU patent/CN202075120U/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589870A (en) * | 2012-03-11 | 2012-07-18 | 东华大学 | System for testing service life of special straight reciprocating motion mechanism |
| CN102589870B (en) * | 2012-03-11 | 2014-04-02 | 东华大学 | System for testing service life of special straight reciprocating motion mechanism |
| CN104122087A (en) * | 2014-08-15 | 2014-10-29 | 上海理工大学 | Ball screw performance experiment table driven by linear motor |
| CN104266837A (en) * | 2014-10-08 | 2015-01-07 | 上海理工大学 | Ball screw performance testing testbed based on motor servo loading |
| CN104266837B (en) * | 2014-10-08 | 2017-02-15 | 上海理工大学 | Ball screw performance testing testbed based on motor servo loading |
| CN107167312A (en) * | 2016-03-08 | 2017-09-15 | 天津爱安特精密机械有限公司 | A kind of Linear transmission product fatigue life test machine |
| CN106092563A (en) * | 2016-05-31 | 2016-11-09 | 清华大学 | Plane two degrees of freedom high frequency charger and test platform for ball screw assembly, |
| CN107702900B (en) * | 2017-08-31 | 2019-05-24 | 北京精密机电控制设备研究所 | A kind of cylindrical compression spring load test method and system |
| CN107702900A (en) * | 2017-08-31 | 2018-02-16 | 北京精密机电控制设备研究所 | A kind of cylindrical compression spring load test method and system |
| CN107831010A (en) * | 2017-10-11 | 2018-03-23 | 北京精密机电控制设备研究所 | A kind of electromechanical actuator ball-screw fault monitoring system |
| CN108020411A (en) * | 2017-12-28 | 2018-05-11 | 无锡顶点医疗器械有限公司 | A kind of device for being used to detect drive rod fatigue durability |
| CN108072519A (en) * | 2018-01-09 | 2018-05-25 | 哈尔滨工业大学 | A kind of novel analog heavy duty radar line slideway auxiliary comparative trial of life-span device |
| CN108072519B (en) * | 2018-01-09 | 2019-05-28 | 哈尔滨工业大学 | A kind of novel analog heavy duty radar line slideway auxiliary comparative trial of life-span device |
| CN110411879A (en) * | 2018-04-28 | 2019-11-05 | 三菱电机上海机电电梯有限公司 | Elevator gate guide shoe wear test device and test method |
| CN108303252A (en) * | 2018-05-09 | 2018-07-20 | 济宁市微科特机械制造有限责任公司 | A kind of ball-screw accelerating lifetime testing device |
| CN109015601A (en) * | 2018-08-28 | 2018-12-18 | 冯亿坤 | A kind of rectilinear motion control device of the PIV tank experiments for Biomimetic Fish Fin |
| CN109342101A (en) * | 2018-12-03 | 2019-02-15 | 湖南科技大学 | A kind of Height-adjustable fatigue tester |
| CN109342101B (en) * | 2018-12-03 | 2024-05-28 | 湖南科技大学 | Fatigue testing machine for lifting bed |
| CN109443751A (en) * | 2018-12-17 | 2019-03-08 | 沈阳理工大学 | A kind of multi-functional running in machine being applicable in Multiple Type ball screw assembly, |
| CN109443751B (en) * | 2018-12-17 | 2024-02-23 | 沈阳理工大学 | Be suitable for multi-functional running-in device of multiple model ball screw pair |
| CN109883711A (en) * | 2019-03-25 | 2019-06-14 | Oppo（重庆）智能科技有限公司 | A kind of detection jig |
| CN110618029A (en) * | 2019-08-29 | 2019-12-27 | 南京理工大学 | Method for testing fatigue elastic life of ball screw pair under extreme load extremely short time working condition |
| CN113820128A (en) * | 2021-11-09 | 2021-12-21 | 中国船舶重工集团公司第七0四研究所 | High-speed planet roller lead screw performance running-in device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20170401 |