CN202648940U - Ball screw assembly precision retentivity testing apparatus - Google Patents
Ball screw assembly precision retentivity testing apparatus Download PDFInfo
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- CN202648940U CN202648940U CN 201220097120 CN201220097120U CN202648940U CN 202648940 U CN202648940 U CN 202648940U CN 201220097120 CN201220097120 CN 201220097120 CN 201220097120 U CN201220097120 U CN 201220097120U CN 202648940 U CN202648940 U CN 202648940U
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Abstract
The utility model discloses a ball screw assembly precision retentivity testing apparatus. A headstock of the apparatus is fixedly installed on one end of a bed body. An output shaft of an alternating current servo motor is connected with an input shaft of a speed reducer through a synchronous belt transmission mechanism. The other end of a ball screw to be tested is arranged in an installation hole of a tailstock and can rotate. A fixed plate forms fixed connection with a second group of slide blocks. The number of the second group of slide blocks is two and the slide blocks are locked on two guide rails respectively. The two guide rails are fixedly installed on the bed body and are parallel to an axis of the ball screw to be tested. A nut is arranged on the ball screw to be tested and is fixedly connected with a nut seat. The nut seat is fixed on a slide plate. The slide plate is fixedly connected with a first group of the slide blocks. The nut and the slide plate drive the first group of the slide blocks to move on the guide rails under the driving of rotation of the ball screw to be tested. The apparatus of the utility model can carry out testing and detection on the ball screw assembly precision retentivity, which is convenient to operate and detect with reliable detection result.
Description
Technical field
The utility model belongs to the detection technique field, particularly a kind of ball screw assembly, precision stability test unit and method.
Background technology
Ball screw assembly, mainly is comprised of ball-screw, ball and ball nut, is used for the gyration of motor is converted into required rectilinear motion.Ball screw assembly, has the kinematic accuracy height, and friction force is little, and reversibility high without sideshake, rigidity, that gyration and rectilinear motion are transformed mutually is high, and the efficient advantages of higher is the moving component that lathe is commonly used, and is widely used in various commercial units and exact instrument.Ball screw assembly, precision stability: the ability that refers to keep in the ball screw assembly, course of work original precision index.The precision stability of ball screw assembly, depends primarily on wearing quality, pretightning force and dimensional stability.The factors such as the match materials of wearing quality and ball screw assembly,, stressed, machining precision, lubricating system and mounting means are relevant.The precision stability of ball-screw has direct impact to machine finish, life-span.The ball screw assembly, that precision stability is low, after lathe used certain hour, raceway and steel ball can wear and tear, and pretightning force discharges, and follows the tired spot corrosion of rolling body, produces gap error, causes axial runout overproof, has affected the machining precision of lathe.
At present, domestic ball screw assembly, associated production producer has developed the device that the precision to ball screw assembly, detects, but can't test and detect the ball screw assembly, precision stability under the loading environment.The ball screw assembly, precision stability is adopted theoretical calculating more, be starved of test and the support that detects data.From the specific targets of grasping ball screw assembly, Product Precision retentivity, improve the product competitive power in serviceable life, domestic associated production producer is starved of the exploitation special-purpose test of ball screw assembly, precision stability and pick-up unit, can understand the precision stability of different ball screw assembly,s in the situation of its suffered plus load of simulation and actual condition.Collect by literature search and data information, not yet find the ball screw assembly, precision stability is tested and the isolated plant that detects.
The utility model content
The technical matters that the utility model solves is to provide a kind of ball screw assembly, precision stability test unit.
The technical solution that realizes the utility model purpose is: a kind of ball screw assembly, precision stability test unit comprises lathe bed, synchronous belt drive mechanism, AC servomotor, speed reduction unit, the headstock, torque sensor, line slideway, tested leading screw, nut seat, nut, first group of slide block, push pedal, tailstock, fixed head, back up pad, pull pressure sensor, baffle plate, hydraulic cylinder, second group of slide block, hydraulic cylinder extension bar, slide plate;
The headstock is fixedly mounted on an end of lathe bed, speed reduction unit is fixedly mounted on the headstock, AC servo motor is fixed on the top of speed reduction unit, the output shaft of this AC servo motor is connected with the input shaft of speed reduction unit by synchronous belt drive mechanism, the output shaft of this speed reduction unit is connected with the tested ball-screw that passes the headstock one side support plate by the torque sensor that is fixed on the headstock, the other end of this tested ball-screw places in the mounting hole on the tailstock and can rotate, this tailstock is connected mutually with fixed head, this fixed head is connected mutually with second group of slide block, the quantity of described second group of slide block is two and is locked at respectively on two guide rails, described two guide rails are fixedly mounted on the lathe bed and are parallel with the axis of tested ball-screw, nut is through on the tested ball-screw and with nut seat and is connected mutually, this nut seat is fixed on the slide plate, described slide plate is fixedly connected with first group of slide block, the quantity of described first group of slide block is two and is installed in respectively on two guide rails that described nut drives first group of slide block with slide plate under the driving of tested ball-screw rotation mobile at guide rail;
Two hydraulic cylinder afterbodys are fixedly connected with baffle plate on being connected in lathe bed by two pull pressure sensor, two back up pads that are fixedly installed on the lathe bed are positioned at the below of two hydraulic cylinders and these two hydraulic cylinders are played a supportive role, the expansion link of these two hydraulic cylinders is connected mutually with push pedal, this push pedal is connected mutually with slide plate, and the expansion link of described hydraulic cylinder is loaded into the thrust or the pulling force that are parallel to tested ball-screw axis direction on slide plate and the nut.
A kind of experimental technique that utilizes above-mentioned ball screw assembly, precision stability test unit may further comprise the steps;
Journey error boundary value when step 1, the model of determining tested ball-screw and precision stability are lost, set the rotating speed of the AC servo motor in the test and the loading force of hydraulic cylinder, tested ball-screw and nut are installed on the testing table, determine the position of tailstock and with second group of slider locking on two guide rails, finish the test before control and the preliminary work of detection system;
Step 3, determine the precision stability index of this tested leading screw, and it is carried out variation characteristic analyze, print test findings.
The utility model compared with prior art, its remarkable advantage is: 1) device of the present utility model can be tested and detect the ball screw assembly, precision stability, the operation with easy to detect, testing result is reliable; 2) loading force in the device of the present utility model realizes that by servo hydraulic cylinder loading force is easy to adjust; 3) the utility model test unit is simple and reliable for structure, can carry out kinetic measurement to precision variation characteristic and the precision stability index of ball screw assembly, under the simulation loading condition, has good market outlook.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Figure is the tomograph of the utility model ball screw assembly, precision stability test unit.
Embodiment
The utility model provides a kind of ball screw assembly, precision stability test unit and method, can be used for test and the detection of ball screw assembly, precision stability.
In conjunction with figure, a kind of ball screw assembly, precision stability test unit comprises lathe bed 1, synchronous belt drive mechanism 2, AC servomotor 3, speed reduction unit 4, the headstock 5, torque sensor 6, line slideway 8, tested leading screw 9, nut seat 10, nut 11, first group of slide block 12, push pedal 13, tailstock 14, fixed head 15, back up pad 16, pull pressure sensor 17, baffle plate 18, hydraulic cylinder 20, second group of slide block 22, hydraulic cylinder extension bar 23, slide plate 26;
The headstock 5 is fixedly mounted on an end of lathe bed 1, speed reduction unit 4 is fixedly mounted on the headstock 5, AC servo motor 3 is fixed on the top of speed reduction unit 4, the output shaft of this AC servo motor 3 is connected by the input shaft of synchronous belt drive mechanism 2 with speed reduction unit 4, the output shaft of this speed reduction unit 4 is by being fixed on being connected of torque sensor 6 and the tested ball-screw 9 that passes the headstock 5 one side support plates on the headstock 5, the other end of this tested ball-screw 9 places in the mounting hole on the tailstock 14 and can rotate, this tailstock 14 is connected mutually with fixed head 15, this fixed head 15 is connected mutually with second group of slide block 22, the quantity of described second group of slide block 22 is two and is locked at respectively on two guide rails 8, described two guide rails 8 are fixedly mounted on the lathe bed 1 and are parallel with the axis of tested ball-screw 9, nut 11 is through on the tested ball-screw 9 and with nut seat 10 and is connected mutually, this nut seat 10 is fixed on the slide plate 26, described slide plate 26 is fixedly connected with first group of slide block 12, the quantity of described first group of slide block 12 is two and is installed in respectively on two guide rails 8 that described nut 11 drives first group of slide block 12 with slide plate 26 under the driving of tested ball-screw 9 rotations mobile at guide rail 8;
Two hydraulic cylinder 20 afterbodys are fixedly connected with baffle plate 18 on being connected in lathe bed 1 by two pull pressure sensor 17, two back up pads 12 that are fixedly installed on the lathe bed 1 are positioned at the below of two hydraulic cylinders 20 and these two hydraulic cylinders 20 are played a supportive role, the expansion link 23 of these two hydraulic cylinders 20 is connected mutually with push pedal 13, this push pedal 13 is connected mutually with slide plate 26, and the expansion link 23 of described hydraulic cylinder 20 is loaded into the thrust or the pulling force that are parallel to tested ball-screw 9 axis directions on slide plate 26 and the nut 11.Simultaneously, AC servo motor 3 drives tested ball-screw 9 rotations, and is mobile at two guide rails 8 by tested ball-screw 9 drive nuts 11 and slide plate 26, finally realizes tested ball-screw 9 and the transmission of nut 11 under loading environment.
This device also comprises round grating 7, grating scale installing plate 19, long grating scale 21, drag chain 24 and grating ruler reading head 25, described round grating 7 be connected on the axle of tested ball-screw 9 and with these tested ball-screw 9 synchronous rotaries, realize the detection to the anglec of rotation and the rotational speed of tested ball-screw 9; Grating scale installing plate 19 is fixedly installed on the lathe bed 1 and with two guide rails 8 and parallels, long grating scale 21 is fixedly mounted on the grating scale installing plate 19, the read head 25 that matches with long grating scale 21 is connected mutually with slide plate 26 and is mobile with slide plate 26, realizes the detection to the axial displacement of nut 11 and slide plate 26; A be connected end of drag chain 24 of described read head 25, the stube cable of this read head 25 places in the drag chain 24, and the other end of described drag chain 24 is fixed on the lathe bed 1.
In conjunction with figure, the control system of the utility model ball bearing screw precision retentivity test unit is made of digital control system, motor drive module, hydraulic control module, AC servo motor 3 and hydraulic cylinder 20, output signal to motor driven systems and hydraulic control system is controlled the rotational speed of AC servo motor 3 and the loading force of hydraulic cylinder 20 by digital control system, realize the rotary actuation of tested ball-screw 9 and axially load; The detection system of the utility model ball bearing screw precision retentivity test unit is made of industrial control computer, pci data capture card, torque sensor 6, circle grating 7, pull pressure sensor 17, long grating scale 21 and read head 25, wherein torque sensor 6 and pull pressure sensor 17 are mainly used to the output torque of AC servo motor 3 and the capable survey of loading force of hydraulic cylinder, and circle grating 7, long grating scale 21 and read head 25 are used for the journey error of tested ball-screw 9 is carried out kinetic measurement.In the stroke error measure, rotational angle by 7 pairs of tested ball-screws 9 of circle grating detects, calculate simultaneously the theoretical value of nut 11 and slide plate 26 axial displacements in conjunction with the helical pitch of tested ball-screw 9, detected simultaneously the actual value of the axial displacement of nut 11 and slide plate 26 by long grating scale 21 and read head 25, the difference between actual value and theoretical value is tested ball-screw 9 and the journey error value of nut 11 in transmission process.All measurement data are gathered by the pci data capture card of installing on the industrial control computer.Between industrial control computer and digital control system, can realize the data message communication function by serial ports.
A kind of experimental technique that utilizes above-mentioned ball screw assembly, precision stability test unit may further comprise the steps;
Journey error boundary value when step 1, the model of determining tested ball-screw 9 and precision stability are lost, set the rotating speed of the AC servo motor 3 in the test and the loading force of hydraulic cylinder 20, tested ball-screw 9 and nut 11 are installed on the testing table, determine the position of tailstock 14 and second group of slide block 22 is locked on two guide rails 8, finish control before the test and the preliminary work of detection system;
Step 3, determine the precision stability index of this tested leading screw 9, and it is carried out variation characteristic analyze, print test findings.
Device of the present utility model can be tested and detect the ball screw assembly, precision stability, and operation is with easy to detect, and testing result is reliable.
Claims (2)
1. ball screw assembly, precision stability test unit, it is characterized in that, comprise lathe bed [1], synchronous belt drive mechanism [2], AC servomotor [3], speed reduction unit [4], the headstock [5], torque sensor [6], line slideway [8], tested leading screw [9], nut seat [10], nut [11], first group of slide block [12], push pedal [13], tailstock [14], fixed head [15], back up pad [16], pull pressure sensor [17], baffle plate [18], hydraulic cylinder [20], second group of slide block [22], hydraulic cylinder extension bar [23], slide plate [26];
The headstock [5] is fixedly mounted on an end of lathe bed [1], speed reduction unit [4] is fixedly mounted on the headstock [5], AC servo motor [3] is fixed on the top of speed reduction unit [4], the output shaft of this AC servo motor [3] is connected by the input shaft of synchronous belt drive mechanism [2] with speed reduction unit [4], the output shaft of this speed reduction unit [4] is connected with the tested ball-screw [9] that passes the headstock [5] one side support plates by the torque sensor [6] that is fixed on the headstock [5], the other end of this tested ball-screw [9] places in the mounting hole on the tailstock [14] and can rotate, this tailstock [14] is connected mutually with fixed head [15], this fixed head [15] is connected mutually with second group of slide block [22], the quantity of described second group of slide block [22] is two and is locked at respectively on two guide rails [8], it is upper and parallel with the axis of tested ball-screw [9] that described two guide rails [8] are fixedly mounted on lathe bed [1], nut [11] is through tested ball-screw [9] and upward and with nut seat [10] is connected mutually, this nut seat [10] is fixed on the slide plate [26], described slide plate [26] is fixedly connected with first group of slide block [12], the quantity of described first group of slide block [12] is two and is installed in respectively on two guide rails [8] that described nut [11] drives first group of slide block [12] with slide plate [26] under the driving of tested ball-screw [9] rotation mobile at guide rail [8];
Two hydraulic cylinders [20] afterbody is fixedly connected with baffle plate [18] on being connected in lathe bed [1] by two pull pressure sensor [17], two back up pads [12] that are fixedly installed on the lathe bed [1] are positioned at the below of two hydraulic cylinders [20] and these two hydraulic cylinders [20] are played a supportive role, the expansion link [23] of these two hydraulic cylinders [20] is connected mutually with push pedal [13], this push pedal [13] is connected mutually with slide plate [26], and the expansion link [23] of described hydraulic cylinder [20] is loaded into the thrust that is parallel to tested ball-screw [9] axis direction or pulling force on slide plate [26] and the nut [11].
2. ball screw assembly, precision stability test unit according to claim 1, it is characterized in that, this device also comprises round grating [7], grating scale installing plate [19], long grating scale [21], drag chain [24] and grating ruler reading head [25], described round grating [7] be connected on the axle of tested ball-screw [9] and with this tested ball-screw [9] synchronous rotary, realize the anglec of rotation of tested ball-screw [9] and the detection of rotational speed; Grating scale installing plate [19] is fixedly installed in lathe bed [1] and upward and with two guide rails [8] parallels, long grating scale [21] is fixedly mounted on the grating scale installing plate [19], the read head [25] that matches with long grating scale [21] is connected mutually with slide plate [26] and is mobile with slide plate [26], realizes the detection to the axial displacement of nut [11] and slide plate [26]; A be connected end of drag chain [24] of described read head [25], the stube cable of this read head [25] places in the drag chain [24], and the other end of described drag chain [24] is fixed on the lathe bed [1].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220097120 CN202648940U (en) | 2012-03-15 | 2012-03-15 | Ball screw assembly precision retentivity testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220097120 CN202648940U (en) | 2012-03-15 | 2012-03-15 | Ball screw assembly precision retentivity testing apparatus |
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| Publication Number | Publication Date |
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| CN202648940U true CN202648940U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220097120 Expired - Lifetime CN202648940U (en) | 2012-03-15 | 2012-03-15 | Ball screw assembly precision retentivity testing apparatus |
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| CN (1) | CN202648940U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620929A (en) * | 2012-03-15 | 2012-08-01 | 南京理工大学 | Device and method for testing precision retaining ability of ball screw assembly |
| CN103217287A (en) * | 2013-03-28 | 2013-07-24 | 南京理工大学 | Device and method for testing static and dynamic characteristics of rolling support straight feed system |
| CN103217288A (en) * | 2013-03-29 | 2013-07-24 | 南京理工大学 | Device for testing dynamic characteristic parameters of ball screw |
| CN103389205A (en) * | 2013-07-17 | 2013-11-13 | 西安交通大学 | Device for detecting comprehensive performance of ball screw assembly in loaded state |
| CN103411773A (en) * | 2013-07-17 | 2013-11-27 | 浙江大学宁波理工学院 | High-speed precision ball screw pair reliability testing device and testing method |
| CN105510029A (en) * | 2015-12-31 | 2016-04-20 | 宁波长飞亚塑料机械制造有限公司 | Injection molding machine lead screw detection device |
| CN105698999A (en) * | 2016-03-04 | 2016-06-22 | 北京工业大学 | Method and device for detecting pretightening force degeneration process of double nut ballscrew pair |
| CN109615225A (en) * | 2018-12-11 | 2019-04-12 | 重庆大学 | A kind of the metaaction assembling quality appraisal procedure and device of ball wire rod mechanism |
| CN109724783A (en) * | 2018-12-27 | 2019-05-07 | 安徽大昌科技股份有限公司 | A kind of dashboard cross member lateral force test tool and method |
| CN111520456A (en) * | 2020-04-29 | 2020-08-11 | 浙江大学昆山创新中心 | Intelligent speed reducer |
| CN112557224A (en) * | 2021-02-25 | 2021-03-26 | 中国科学院地质与地球物理研究所 | Alternating stress fatigue test equipment |
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2012
- 2012-03-15 CN CN 201220097120 patent/CN202648940U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620929A (en) * | 2012-03-15 | 2012-08-01 | 南京理工大学 | Device and method for testing precision retaining ability of ball screw assembly |
| CN102620929B (en) * | 2012-03-15 | 2014-06-04 | 南京理工大学 | Device and method for testing precision retaining ability of ball screw assembly |
| CN103217287A (en) * | 2013-03-28 | 2013-07-24 | 南京理工大学 | Device and method for testing static and dynamic characteristics of rolling support straight feed system |
| CN103217287B (en) * | 2013-03-28 | 2015-08-26 | 南京理工大学 | Rolling support linear feeding system static and dynamic performance proving installation and method of testing |
| CN103217288A (en) * | 2013-03-29 | 2013-07-24 | 南京理工大学 | Device for testing dynamic characteristic parameters of ball screw |
| CN103389205A (en) * | 2013-07-17 | 2013-11-13 | 西安交通大学 | Device for detecting comprehensive performance of ball screw assembly in loaded state |
| CN103411773A (en) * | 2013-07-17 | 2013-11-27 | 浙江大学宁波理工学院 | High-speed precision ball screw pair reliability testing device and testing method |
| CN103389205B (en) * | 2013-07-17 | 2016-01-13 | 西安交通大学 | A kind of device detecting combination property under ball screw assembly, stress state |
| CN105510029A (en) * | 2015-12-31 | 2016-04-20 | 宁波长飞亚塑料机械制造有限公司 | Injection molding machine lead screw detection device |
| CN105698999A (en) * | 2016-03-04 | 2016-06-22 | 北京工业大学 | Method and device for detecting pretightening force degeneration process of double nut ballscrew pair |
| CN105698999B (en) * | 2016-03-04 | 2018-07-31 | 北京工业大学 | A kind of method and device of detection Double-screw nut ball leading screw secondary pretightening force measuring degenerative process |
| CN109615225A (en) * | 2018-12-11 | 2019-04-12 | 重庆大学 | A kind of the metaaction assembling quality appraisal procedure and device of ball wire rod mechanism |
| CN109615225B (en) * | 2018-12-11 | 2023-02-07 | 重庆大学 | Meta-motion assembly quality assessment method and device of ball screw mechanism |
| CN109724783A (en) * | 2018-12-27 | 2019-05-07 | 安徽大昌科技股份有限公司 | A kind of dashboard cross member lateral force test tool and method |
| CN111520456A (en) * | 2020-04-29 | 2020-08-11 | 浙江大学昆山创新中心 | Intelligent speed reducer |
| CN112557224A (en) * | 2021-02-25 | 2021-03-26 | 中国科学院地质与地球物理研究所 | Alternating stress fatigue test equipment |
| CN112557224B (en) * | 2021-02-25 | 2021-06-25 | 中国科学院地质与地球物理研究所 | Alternating stress fatigue test equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130102 Effective date of abandoning: 20140604 |
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| RGAV | Abandon patent right to avoid regrant |