CN112326222B - Method for testing dustproof performance of lead screw guide rail of equipment - Google Patents
Method for testing dustproof performance of lead screw guide rail of equipment Download PDFInfo
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- CN112326222B CN112326222B CN202011179185.9A CN202011179185A CN112326222B CN 112326222 B CN112326222 B CN 112326222B CN 202011179185 A CN202011179185 A CN 202011179185A CN 112326222 B CN112326222 B CN 112326222B
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Abstract
The application discloses a method for testing the dustproof performance of a lead screw guide rail of equipment, which comprises the following steps: s1, carrying out zero returning operation on the lead screw to enable the slide block to be positioned at a zero point; s2, setting N test positions on the stroke of the screw rod, wherein N is a positive even number; the s-th test bit is positioned between the zero point and the s-1 st test bit, and s is a positive even number; s3, controlling the motor to rotate forwards, enabling the slide block of the lead screw to move from a zero point to a first test position at a test speed V, and calculating a time average value T1 of the motor torque between the zero point and the first test position; s4, comparing the T1 with a preset normal threshold T0; according to the method for testing the dustproof performance of the lead screw guide rail of the equipment, the dustproof performance of the lead screw guide rail is tested in a segmented mode, so that the testing efficiency is high, the difference of the dustproof performance of different sections of the lead screw guide rail can be accurately judged, and the dustproof equipment can be improved in a targeted mode.
Description
Technical Field
The application relates to the technical field of lead screws, in particular to a method for testing the dustproof performance of a lead screw guide rail of equipment.
Background
The lead screw is one of the common parts of production equipment, and in order to ensure the machining precision of the equipment, the guide rail is required to have higher guide precision and good motion stability. However, in the operation process of the equipment, because a large amount of corrosive dust, smoke and moisture are generated in the process of processing a processed workpiece, and the smoke, the smoke and the moisture are deposited on the surface of the linear guide rail and the screw mounting holes for a long time, the processing precision of the equipment is greatly influenced, corrosion points are formed on the surface of the linear guide rail and the screw mounting holes, the service life of the equipment is shortened, and therefore a dust cover is generally installed on the equipment to prevent the dust from contacting with the guide rail. Despite the protection of the dust cover, there is currently a lack of an effective way to detect dust performance.
Disclosure of Invention
Aiming at the defects in the technology, the application provides a method for testing the dustproof performance of the lead screw guide rail of the equipment.
In order to solve the technical problem, the technical scheme adopted by the application is as follows:
a method for testing the dustproof performance of a lead screw guide rail of equipment comprises the following steps:
s1, carrying out zero returning operation on the lead screw to enable the slide block to be positioned at a zero point;
s2, setting N test positions on the stroke of the screw rod, wherein N is a positive even number; wherein the second test bit is located between the zero point and the first test bit;
when s is a positive even number and is more than or equal to 4, the s-3 test bit is positioned between the s-1 test bit and the zero point, and the s test bit is positioned between the s-3 test bit and the s-1 test bit;
s3, controlling the motor to rotate forwards, moving the slide block of the lead screw from the zero point to a first test position at a test speed V, and calculating the time average value T1 of the motor torque between the zero point and the first test position;
s4, comparing the T1 with a preset normal threshold T0; if T1 is not less than eT0, wherein e is more than 1, go to step S5-1, if T1 is less than e T0, go to step S5-2;
s5-1, controlling the motor to rotate reversely, enabling the slide block of the lead screw to move from the first test position to the second test position at the test speed V, and calculating the time average value T1-2 of the motor torque between the second test position and the first test position; controlling the motor to rotate forwards, enabling the sliding block of the lead screw to move from the second testing position to the third testing position at the testing speed V, calculating a time average value T1-3 of the motor torque between the first testing position and the third testing position, and repeating the steps until the stroke of the lead screw is tested;
s5-2, controlling the motor to rotate forwards, enabling the sliding block of the lead screw to move from the first testing position to the third testing position at the testing speed V, calculating the time average value T1-3 of the motor torque between the first testing position and the third testing position, and repeating the steps until the stroke of the lead screw is tested.
Preferably, 1.01. ltoreq. e.ltoreq.1.05.
Preferably, the distances between two adjacent test bits are the same.
Preferably, in step S1, the motor is controlled to rotate reversely, the slider moves towards the zero point at a speed V1, when the slider is detected at the first initial position, the motor stops rotating, then the motor is controlled to rotate forwardly, the slider moves at a speed V1 for a first stroke and then stops, the motor is controlled to rotate reversely, the slider moves at a speed V2 for a second stroke and then stops, and the zero return is completed, wherein V2 < V1;
when the slide block is not detected at the first initial position and is detected at the second initial position, the motor stops rotating, then the motor is controlled to rotate forwards, the slide block moves at a speed V1 for a third stroke and then stops, the motor is controlled to rotate backwards, the mechanism moves at a speed V2 for a fourth stroke and then stops, and zero return is completed;
wherein the second initial bit is between the first initial bit and the zero point.
Compared with the prior art, the application has the beneficial effects that:
according to the method for testing the dustproof performance of the lead screw guide rail of the equipment, the dustproof performance of the lead screw guide rail is tested in a segmented mode, so that the testing efficiency is high, the difference of the dustproof performance of different sections of the lead screw guide rail can be accurately judged, and the dustproof equipment can be improved in a targeted mode.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a flow chart of an embodiment of a method for testing the dust resistance of a lead screw guide rail of the apparatus set forth herein;
fig. 2 is a schematic diagram of the division of the test positions on the lead screw stroke proposed by the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The dustproof device, such as a dustproof cover, is generally arranged on a lead screw of the device. A position sensor is respectively arranged at a first initial position and a second initial position of the screw rod, and the second initial position is between the first initial position and a zero point. As shown in fig. 2, 8 test positions are set up on the stroke of the screw, the 8 test positions are arranged at equal intervals along the length direction of the screw, and each test position is provided with a position sensor; wherein the s-th test bit is located between the zero point and the s-1 st test bit, and s is a positive even number. The whole testing system comprises a motor, a PLC controller, a computer, a position sensor and a sensor for measuring the torque of the motor. The PLC controller is respectively connected with the position sensor, the motor and the computer, an output shaft of the motor is connected with a lead screw of the lead screw, and the torque sensor is connected with the computer.
The staff carries out the operation on the computer, as shown in fig. 1, and the method comprises the following steps:
switching the working mode into a manual mode, firstly controlling the motor to rotate reversely, moving the slide block of the lead screw at a preset speed V1, giving a prompt to stop the motor when the slide block reaches a first initial position and is detected by the position sensor, then controlling the motor to rotate forwards, moving the slide block at a speed V1 for a preset first stroke and then stopping, controlling the motor to rotate reversely, moving the slide block at a preset speed V2 for a preset second stroke and then stopping, and completing zero return, wherein V2 is less than V1; if the slide block is not detected by the position sensor at the first initial position and then is detected by the sensor at the second initial position, a prompt is sent to stop the motor, then the motor is controlled to rotate forwards, the slide block moves at a speed V1 for a third stroke and then stops, the motor is controlled to rotate backwards, the mechanism moves at a speed V2 for a fourth stroke and then stops, and zero return is completed; since the distances between the first and second initial positions and the zero point are determined, the slider is moved at a faster speed V1, and if the position sensor of the first initial position detects a signal, the zero is returned starting from the first initial position, but if it is missed, the zero is returned starting from the second initial position, which improves the accuracy and efficiency of the zero return.
After zero return is finished, switching a control mode into an automatic mode, starting the motor to rotate forwards firstly in the automatic mode, starting timing, enabling the sliding block to move from a zero point to a first test position at a preset test speed V, collecting the torque of the motor according to a preset frequency in the moving process, stopping the motor when a sensor of the first test position detects a signal, stopping timing, and then calculating the time average value T1 of the torque of the motor between the zero point and the first test position; comparing T1 with a preset normal threshold T0; if T1 is greater than or equal to 1.03T0, the section of the guide rail between the zero point and the first test position is seriously affected by dust. In order to know more accurately which part between the zero point and the first test position has higher pollution degree, the motor is started to rotate reversely, timing is started, the sliding block is moved from the first test position to the second test position at a test speed V, the torque of the motor is collected during the movement, when a sensor of the second test position detects a signal, the motor stops rotating, the timing is stopped, the time average value T1-2 of the torque of the motor between the second test position and the first test position is calculated, and whether the pollution between the zero point and the second test position is more serious or the pollution between the second test position and the first test position is more serious is judged by comparing T1-2 and T0. And then starting the motor to rotate forwards, enabling the sliding block to move from the second testing position to the third testing position at a testing speed V, starting timing and collecting the torque of the motor when the sensor of the first testing position detects a signal, stopping the motor when the sensor of the third testing position detects a signal, stopping timing, calculating a time average value T1-3 of the torque of the motor between the first testing position and the third testing position, and repeating the steps to judge the dust pollution condition between the first testing position and the third testing position. In other embodiments, the distances between two adjacent test bits are equal, and the distance between the zero point and the first test bit is equal to the distance between the first test bit and the third test bit, so that the subsequent timing is not needed, and the time is directly obtained by using the first timing data, thereby simplifying the procedure.
Returning to the above step, if T1 is less than 1.03T0, which indicates that the section of guide rail between the zero point and the first test position is slightly influenced by dust, starting the motor to rotate forwards, moving the slide block from the first test position to the third test position at the test speed V, collecting the torque of the motor, stopping the motor from rotating when the sensor at the third test position detects a signal, stopping timing, calculating the time average value T1-3 of the motor torque between the first test position and the third test position, and repeating the above steps to judge the dust pollution condition between the first test position and the third test position.
The guide rail of the whole lead screw is tested according to the steps, so that the dust pollution condition of each part on the guide rail is specifically known, and the dustproof equipment is improved pertinently according to the dust pollution condition.
The testing method firstly judges the pollution degree between two adjacent odd test positions, and if the influence of dust is large, the pollution degree on two sides of the even test positions can be more accurately known; when the pollution degree between two adjacent odd test positions is lower, the dustproof effect of the section is proved to be good, and then the pollution degree between the two following odd test positions is directly judged, so that the whole test efficiency can be improved.
The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.
Claims (3)
1. The method for testing the dustproof performance of the lead screw guide rail of the equipment is characterized by comprising the following steps of:
s1, carrying out zero returning operation on the lead screw to enable the slide block to be positioned at a zero point;
s2, setting N test positions at equal intervals on the stroke of the screw rod, wherein N is a positive even number; wherein the second test bit is located between the zero point and the first test bit;
when s is a positive even number and is more than or equal to 4, the s-3 test bit is positioned between the s-1 test bit and the zero point, and the s test bit is positioned between the s-3 test bit and the s-1 test bit;
s3, controlling the motor to rotate forwards, moving the slide block of the lead screw from the zero point to a first test position at a test speed V, and calculating the time average value T1 of the motor torque between the zero point and the first test position;
s4, comparing the T1 with a preset normal threshold T0; if T1 is not less than eT0, wherein e is more than 1, go to step S5-1, if T1 is less than e T0, go to step S5-2;
s5-1, controlling the motor to rotate reversely, enabling the slide block of the lead screw to move from the first test position to the second test position at the test speed V, and calculating the time average value T1-2 of the motor torque between the second test position and the first test position; controlling the motor to rotate forwards, enabling the sliding block of the lead screw to move from the second testing position to the third testing position at the testing speed V, calculating a time average value T1-3 of the motor torque between the first testing position and the third testing position, and repeating the steps until the stroke of the lead screw is tested;
s5-2, controlling the motor to rotate forwards, enabling the sliding block of the lead screw to move from the first testing position to the third testing position at the testing speed V, calculating the time average value T1-3 of the motor torque between the first testing position and the third testing position, and repeating the steps until the stroke of the lead screw is tested.
2. The method for testing the dust-proof performance of the lead screw guide rail of the apparatus according to claim 1, characterized in that:
1.01≤e≤1.05。
3. the method for testing the dust-proof performance of the lead screw guide rail of the apparatus according to claim 2, characterized in that:
in the step S1, the motor is controlled to rotate reversely, the slider moves to the zero point at the speed V1, when the slider is detected at the first initial position, the motor stops rotating, then the motor is controlled to rotate forwardly, the slider moves at the speed V1 for a first stroke and then stops, the motor is controlled to rotate reversely, the slider moves at the speed V2 for a second stroke and then stops, and the zero return is completed, wherein V2 is less than V1;
when the slide block is not detected at the first initial position and is detected at the second initial position, the motor stops rotating, then the motor is controlled to rotate forwards, the slide block moves at a speed V1 for a third stroke and then stops, the motor is controlled to rotate backwards, the mechanism moves at a speed V2 for a fourth stroke and then stops, and zero return is completed;
wherein the second initial bit is between the first initial bit and the zero point.
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| CN202011179185.9A CN112326222B (en) | 2020-10-29 | 2020-10-29 | Method for testing dustproof performance of lead screw guide rail of equipment |
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| CN202011179185.9A CN112326222B (en) | 2020-10-29 | 2020-10-29 | Method for testing dustproof performance of lead screw guide rail of equipment |
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| CN112326222B true CN112326222B (en) | 2021-04-30 |
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| CN200986478Y (en) * | 2006-12-01 | 2007-12-05 | 山东济宁博特精密丝杠有限公司 | Ball guide-screw pair frictional moment measuring apparatus |
| DE102016104819A1 (en) * | 2016-03-16 | 2017-09-21 | Hiwin Technologies Corp. | Dust-protected device for a ball screw drive |
| CN207366112U (en) * | 2017-09-26 | 2018-05-15 | 无锡双益精密机械有限公司 | A kind of moment of friction detection device for ball screw assembly, |
| 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 |
| CN210068872U (en) * | 2019-05-31 | 2020-02-14 | 海威昶自动化工程(苏州)有限公司 | Dustproof mechanism of lead screw |
| CN111590378A (en) * | 2020-05-27 | 2020-08-28 | 芜湖泓鹄材料技术有限公司 | Machine tool lead screw surface cleaning and dust preventing device |
| CN211693407U (en) * | 2019-12-20 | 2020-10-16 | 苏州云雀机器人科技有限公司 | Lead screw duplex position module that prevents dust |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170268644A1 (en) * | 2016-03-18 | 2017-09-21 | Hiwin Technologies Corp. | Dustproof device for ball screw |
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2020
- 2020-10-29 CN CN202011179185.9A patent/CN112326222B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986478Y (en) * | 2006-12-01 | 2007-12-05 | 山东济宁博特精密丝杠有限公司 | Ball guide-screw pair frictional moment measuring apparatus |
| DE102016104819A1 (en) * | 2016-03-16 | 2017-09-21 | Hiwin Technologies Corp. | Dust-protected device for a ball screw drive |
| CN207366112U (en) * | 2017-09-26 | 2018-05-15 | 无锡双益精密机械有限公司 | A kind of moment of friction detection device for ball screw assembly, |
| CN210068872U (en) * | 2019-05-31 | 2020-02-14 | 海威昶自动化工程(苏州)有限公司 | Dustproof mechanism of lead screw |
| 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 |
| CN211693407U (en) * | 2019-12-20 | 2020-10-16 | 苏州云雀机器人科技有限公司 | Lead screw duplex position module that prevents dust |
| CN111590378A (en) * | 2020-05-27 | 2020-08-28 | 芜湖泓鹄材料技术有限公司 | Machine tool lead screw surface cleaning and dust preventing device |
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