Guide rail service life testing device

Abstract

The utility model relates to a guide rail service life testing device which comprises a base. The base is provided with two working guide rails which are arranged in parallel; a test guide rail is arranged in the middle of the working guide rail; the working guide rail is slidably connected with a load assembly used for applying a load to the test guide rail. The bottom of the load assembly is provided with a test slide block in sliding connection with the test guide rail. A guide wheel is arranged at one end of the base, and a driving motor is arranged at the other end of the base; the driving motor is connected with the guide wheel through a conveying belt; the transmission belt is fixedly connected with the load assembly to drive the load assembly to reciprocate along the test guide rail; the load assembly comprises a stress application rod; and a plurality of belleville springs for balancing load are arranged between the stress application rod and the test slide block. According to the utility model, a plurality of belleville springs are arranged in the connecting assembly, so that the load can be homogenized through the belleville springs when the stress application rod applies the pressure load or the tension load.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear guide rail field especially relates to a guide rail life testing arrangement. BACKGROUND

[0002] When simulating the load of the actual work of the guide rail, the loading system can not uniformly apply force on the guide rail. If the loading system of the testing arrangement is not reasonably designed, the local force of the guide rail can be too large. This can make the local wear rate of the guide rail much faster than other parts, resulting in that the test result cannot truly reflect the life of the guide rail under uniform stress, and shortening the overall effective life evaluation time of the test guide rail. SUMMARY

[0003] In order to solve the above problems of the prior art, the utility model provides a guide rail life testing arrangement.

[0004] In order to achieve the above purpose, the utility model adopts the main technical scheme including:

[0005] A guide rail life testing arrangement, including base, be equipped with two parallel work guide rails on the base, the middle part of work guide rail is equipped with test guide rail, the work guide rail is slidably connected with the load assembly for applying load to the test guide rail, the bottom of load assembly is equipped with the test slide block that is slidably connected with test guide rail, one end of base is equipped with guide wheel, the other end is equipped with driving motor, driving motor is connected with guide wheel through transmission belt, transmission belt is fixedly connected with load assembly to drive load assembly reciprocating motion along test guide rail, load assembly includes force bar, the middle part of force bar and test slide block is equipped with several butterfly springs that balance load.

[0006] Further, both ends of the base are provided with travel switches for detecting the moving position of the load assembly.

[0007] Further, the load assembly includes a mounting seat, the bottom of the mounting seat is slidably connected with the work guide rail through a work slide block, and the bottom of the mounting seat is provided with a clamping assembly fixedly connected with the transmission belt.

[0008] Further, the top of the mounting seat is provided with a connecting seat, the force bar is threadedly connected with the connecting seat, and the bottom of the force bar is connected with the test slide block.

[0009] Further, the bottom of the force bar is connected with the test slider through a connecting assembly; the connecting assembly comprises a first connecting block connected with the test slider; a sleeve is fixedly connected to the top of the first connecting block; a second connecting block is arranged on the top of the sleeve; a third connecting block is arranged in the sleeve; a protrusion is formed on the middle portion of the third connecting block and extends outwardly; a plurality of butterfly springs are arranged on the third connecting block and are located between the protrusion and the first connecting block; a plurality of butterfly springs are arranged on the third connecting block and are located between the protrusion and the second connecting block; the third connecting block is connected with the force bar; and a clearance groove allowing the third connecting block to move is arranged on the first connecting block and the second connecting block.

[0010] Further, a pressure sensor is fixedly connected to the bottom of the first connecting block; and the pressure sensor is connected with the test slider through a fixing block.

[0011] Further, a guide column is arranged on the top of the second connecting block; the guide column is matched with a guide hole in the connecting seat; and two guide columns are arranged.

[0012] Further, the load assembly is fixedly connected with the conveying belt through a clamping assembly; the clamping assembly comprises a mounting plate fixedly connected with the load assembly; the mounting plate is arranged on the top of the conveying belt; a connecting plate is arranged below the mounting plate and is located on the bottom of the conveying belt; and the connecting plate is fixedly connected with the mounting plate to clamp the conveying belt.

[0013] Further, a tooth portion is arranged on one side of the connecting plate and / or the mounting plate close to the conveying belt.

[0014] The utility model discloses beneficial effects are: through the multiple butterfly springs arranged in the connecting assembly, can make the force bar when exerting pressure load or tension load, all through butterfly spring even load homogenization, butterfly spring can produce relatively even pressure in the compression process. Compared with some direct load application mode, it can better transmit force to each part of the linear guide rail. For example, when the service life of the long-stroke linear guide rail is tested, directly applying concentrated force can cause the local force of the guide rail to be too large, and the elastic deformation of the butterfly spring can make the force evenly distributed within a certain range, so that the wear of each part of the guide rail during the whole test process is more uniform, more in line with the stress condition of the guide rail under actual working condition, and helps to improve the accuracy of the test result. When the linear guide rail has machining precision error or appears slight deformation during the test process, the butterfly spring can adaptively adjust the distribution of force according to the actual condition of the surface of the guide rail. Because the elastic property of the butterfly spring can compensate for the unevenness to a certain extent, the guide rail can work as close to the ideal stress condition as possible during the test process, avoid premature failure caused by local stress concentration, and thus more truly simulate the stress environment of the linear guide rail in actual application, prolong the effective test time of the test device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Fig. 1 This is a three-dimensional structural view of the present invention;

[0017] Fig. 2 This is a perspective view of the load component of this utility model;

[0018] Fig. 3 This is a cross-sectional view of the load component of this utility model;

[0019] Explanation of reference numerals in the attached figures:

[0020] 100. Base; 101. Test rail; 110. Working rail; 120. Guide wheel; 130. Drive motor; 140. Conveyor belt; 150. Limit switch; 200. Load assembly; 201. Test slider; 202. Working slider; 210. Clamping assembly; 211. Mounting plate; 212. Connecting plate; 213. Tooth; 220. Mounting seat; 230. Connecting seat; 240. Force bar; 250. Fixing block; 251. Pressure sensor; 260. Connecting assembly; 261. First connecting block; 262. Sleeve; 263. Second connecting block; 264. Third connecting block; 265. Protrusion; 266. Disc spring; 267. Relief groove; 270. Guide post; 271. Guide hole; 280. Handle. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] In the description of the utility model, it needs to explain, the term "upper", "lower", "internal", "external" "front end", "rear end", "both ends", "one end", "the other end" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as the limitation of the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it needs to explain, unless otherwise explicitly provided and limited, the term "installation", "provided with", "connection" and so on, should be broad understanding, for example "connection", can be fixed connection, can be detachable connection, or integrally connected;Can be mechanical connection, can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] Embodiment, as shown in Figs. 1-3

[0025] A guide rail life test device, including base 100;The base 100 is provided with two parallel working rails 110;The working rail 110 middle part is equipped with test rail 101;The working rail 110 is slidably connected with the load assembly 200 for applying load to the test rail 101;The load assembly 200 bottom is equipped with test slide 201 slidably connected with test rail 101;Through two working rails 110, the load assembly 200 can conveniently apply uniform load to the test rail 101;Improve the accuracy of test;

[0026] In an embodiment, one end of the base 100 is provided with a guide wheel 120, and the other end is provided with a driving motor 130;The driving motor 130 is connected with the guide wheel 120 through the transmission belt 140;The transmission belt 140 is fixedly connected with the load assembly 200 to drive the load assembly 200 to reciprocate along the test rail 101;In an embodiment, the output shaft of the driving motor 130 is provided with a synchronous pulley, which is connected with the transmission belt 140, and the reciprocating motion of the transmission belt 140 is realized by the forward and reverse rotation of the driving motor 130, thereby driving the reciprocating motion of the load assembly 200.

[0027] ​In an embodiment, the load assembly 200 comprises a force bar 240; the force bar 240 is provided with a plurality of butterfly springs 266 for balancing the load between the test slider 201; by providing the butterfly springs 266, the load applied to the test slider 201 can be further ensured to be uniform, so as to uniformly apply the load on the test rail 101;

[0028] In an embodiment, the base 100 is provided at both ends with a travel switch 150 for detecting the moving position of the load assembly 200; the travel switch 150 can be used to detect the limit position of the movement of the load assembly 200, and can also be used to control the reciprocating movement distance of the load assembly 200;

[0029] In an embodiment, the load assembly 200 comprises a mounting seat 220; the bottom of the mounting seat 220 is slidably connected with the working rail 110 through a working slider 202; in an embodiment, the working slider 202 is provided in total four, two working sliders 202 corresponding to one working rail 110, so as to improve the stability of operation; in an embodiment, the working slider 202 can be provided in total six, eight or other even numbers;

[0030] In an embodiment, the bottom of the mounting seat 220 is provided with a clamping assembly 210 fixedly connected with the conveying belt 140. The load assembly 200 is fixedly connected with the conveying belt 140 through the clamping assembly 210; the clamping assembly 210 comprises a mounting plate 211 fixedly connected with the load assembly 200; the mounting plate 211 is arranged at the top of the conveying belt 140, and a connecting plate 212 located at the bottom of the conveying belt 140 is arranged below the mounting plate 211; the connecting plate 212 is fixedly connected with the mounting plate 211 to clamp the conveying belt 140; in an embodiment, one side of the connecting plate 212 and / or the mounting plate 211 close to the conveying belt 140 is provided with a tooth portion 213, and by increasing the tooth portion 213, the connection stability between the clamping assembly 210 and the conveying belt 140 can be further improved;

[0031] In an embodiment, the top of the mounting seat 220 is provided with a connecting seat 230; the force bar 240 is threadedly connected with the connecting seat 230; the bottom of the force bar 240 is connected with the test slider 201. The top of the force bar 240 is provided with a handle 280; by rotating the force bar 240, pressure or tension can be applied to the test slider 201, so as to perform life test on the test rail 101 and / or the test slider 201;

[0032] In an embodiment, the bottom of the force bar 240 is connected to the test slider 201 through a connecting assembly 260; the connecting assembly 260 includes a first connecting block 261 connected to the test slider 201; the top of the first connecting block 261 is fixedly connected with a sleeve 262; the top of the sleeve 262 is provided with a second connecting block 263; the sleeve 262 is provided with a third connecting block 264; the middle part of the third connecting block 264 is outwardly formed with a protrusion 265; a plurality of butterfly springs 266 are arranged between the protrusion 265 and the first connecting block 261 and between the protrusion 265 and the second connecting block 263 and are sleeved on the third connecting block 264; the third connecting block 264 is connected to the force bar 240; the first connecting block 261 and the second connecting block 263 are both provided with a displacement slot 267 allowing the third connecting block 264 to move; through the plurality of butterfly springs 266 arranged in the connecting assembly 260, the force bar 240 can be uniformly loaded when a pressure load or a tensile load is applied.

[0033] The butterfly spring 266 can generate relatively uniform pressure during compression. Compared with some direct load application methods, it can better transmit force to each part of the linear guide rail. For example, when testing the service life of a long-stroke linear guide rail, directly applying concentrated force may cause the local force of the guide rail to be too large, while the elastic deformation of the butterfly spring 266 can make the force uniformly distributed within a certain range, so that the wear of each part of the guide rail is more uniform during the entire test process, more in line with the stress condition of the guide rail in actual working state, and helps to improve the accuracy of test results. When the linear guide rail has machining precision errors or minor deformations during the test process, etc., the butterfly spring 266 can adaptively adjust the distribution of force according to the actual situation of the guide rail surface. Because of the elastic properties of the butterfly spring 266, it can compensate for these unevenness to some extent, ensuring that the guide rail works as close to the ideal stress condition as possible during the test process, avoiding premature failure due to local stress concentration, and thus more realistically simulating the stress environment of the linear guide rail in actual application, prolonging the effective test time of the test device.

[0034] The butterfly spring 266 has good elastic recovery capability and can maintain a relatively stable pre-tightening force during repeated loading and unloading. For the service life test of the linear guide rail, stable pre-tightening force is very important. For example, in a ball linear guide rail, appropriate pre-tightening force can ensure good contact between the ball and the raceway, preventing the ball from sliding during movement. The stable pre-tightening force provided by the butterfly spring 266 helps to maintain stable contact between the moving parts inside the guide rail, thereby more accurately testing the service life of the guide rail 101 under stable stress conditions.

[0035] During the test, external factors can cause the loading force to fluctuate slightly. The elastic buffering effect of the butterfly spring 266 can effectively reduce the influence of these fluctuations on the linear guide rail. For example, when there is slight vibration in the environment where the test device is located or there is some small force fluctuation in the loading system itself, the butterfly spring 266 can absorb these fluctuations, keep the actual force acting on the guide rail relatively stable, reduce the interference of these interference factors on the test result of the guide rail service life, and make the test data more reliable.

[0036] In an embodiment, the bottom of the first connecting block 261 is fixedly connected with a pressure sensor 251; and the pressure sensor 251 is connected with the test sliding block 201 through a fixing block 250.

[0037] In an embodiment, the top of the second connecting block 263 is provided with a guide column 270; the guide column 270 is matched with a guide hole 271 on the connecting seat 230; and the guide column 270 is provided with two.

[0038] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent transformation, direct or indirect application in related technical fields by using the content of the present application specification and drawings are also included in the patent protection range of the present application.

Claims

1. A guideway life test apparatus, characterized by: The utility model provides a kind of test device for testing the load of test device, including pedestal (100);The pedestal (100) is equipped with two parallel work guides (110);The middle part of the work guide (110) is equipped with test guide (101);The work guide (110) is slidably connected with load assembly (200) for loading to test guide (101);The bottom of the load assembly (200) is equipped with test slider (201) slidably connected with test guide (101);The one end of the pedestal (100) is equipped with guide wheel (120), and the other end is equipped with driving motor (130);The driving motor (130) is connected with guide wheel (120) by transmission belt (140);The transmission belt (140) is fixedly connected with load assembly (200) to drive load assembly (200) reciprocating motion along test guide (101);The load assembly (200) includes force bar (240);The force bar (240) is equipped with several butterfly springs (266) between test slider (201) and the force bar (240) for load balancing.

2. The guide rail life testing device according to claim 1, characterized by: The two ends of the pedestal (100) are equipped with travel switch (150) for detecting the moving position of load assembly (200).

3. The guide rail life testing device according to claim 1, characterized by: The load assembly (200) includes mounting seat (220);The bottom of the mounting seat (220) is slidably connected with work guide (110) by work slider (202);The bottom of the mounting seat (220) is equipped with clamping assembly (210) fixedly connected with transmission belt (140).

4. A guideway life test apparatus as claimed in claim 3, wherein: The top of the mounting seat (220) is equipped with connecting seat (230);The force bar (240) is threadedly connected with the connecting seat (230);The bottom of the force bar (240) is connected with test slider (201).

5. The guide rail life testing apparatus according to claim 1 or 4, characterized by: The bottom of the force bar (240) is connected with test slider (201) by connecting assembly (260);The connecting assembly (260) includes first connecting block (261) connected with test slider (201);The top of the first connecting block (261) is fixedly connected with sleeve (262);The top of the sleeve (262) is equipped with second connecting block (263);The sleeve (262) is equipped with third connecting block (264);The middle part of the third connecting block (264) is formed with protrusion (265) outward;The protrusion (265) and the first connecting block (261) are equipped with several butterfly springs (266) sleeved on the third connecting block (264);The protrusion (265) and the second connecting block (263) are equipped with several butterfly springs (266) sleeved on the third connecting block (264);The third connecting block (264) is connected with force bar (240);The first connecting block (261) and the second connecting block (263) are all equipped with displacement slot (267) allowing the third connecting block (264) to move.

6. A guideway life test apparatus as claimed in claim 5, wherein: The bottom of the first connecting block (261) is fixedly connected with pressure sensor (251);The pressure sensor (251) is connected with test slider (201) by fixed block (250).

7. The guide rail life testing apparatus according to claim 5, characterized by: The top of the second connecting block (263) is provided with a guide column (270); the guide column (270) is matched with a guide hole (271) on the connecting seat (230); the guide column (270) is provided with two.

8. The rail life testing apparatus of claim 1, wherein: The load assembly (200) is fixedly connected with the transmission belt (140) through the clamping assembly (210); the clamping assembly (210) comprises a mounting plate (211) fixedly connected with the load assembly (200); the mounting plate (211) is arranged on the top of the transmission belt (140), and a connecting plate (212) located at the bottom of the transmission belt (140) is arranged below the mounting plate (211); the connecting plate (212) is fixedly connected with the mounting plate (211) to clamp the transmission belt (140).

9. A guideway life test apparatus as claimed in claim 8, wherein: One side of the connecting plate (212) and / or the mounting plate (211) close to the transmission belt (140) is provided with a tooth portion (213).

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