A sliding block wear resistance testing device

Abstract

This utility model discloses a device for testing the wear resistance of a slider, comprising a worktable. The worktable is characterized by a rotating grinding table for performing slider wear resistance testing. Clamping assemblies for clamping the slider under test are symmetrically arranged on both sides of the rotating grinding table. A conveying assembly for driving the clamping assemblies closer to or further away from the rotating grinding table is provided between the clamping assemblies and the worktable. An elastic adjustment element is provided between the clamping assemblies and the conveying assembly. Each clamping assembly includes a clamping groove and a pressing mechanism located at the top of the clamping groove for driving the clamping groove to move vertically up and down. A displacement sensor for monitoring the vertical displacement of the clamping assembly is also provided above the clamping assembly. This utility model ensures the stability of the grinding process through the rotating grinding table, achieves precise feeding and return of the slider during operation through the symmetrically arranged clamping assemblies combined with the conveying assembly, and uses the vertical displacement monitored by the displacement sensor to evaluate wear resistance, thus improving test accuracy.

Description

Technical Field

[0001] This utility model relates to the field of film stretching technology, and in particular to a device suitable for testing the wear resistance of sliders. Background Technology

[0002] In the film stretching equipment industry, traditional motion systems face severe challenges as production speeds continue to increase. Under high-speed operation, conventional materials rely heavily on lubricants to reduce frictional wear. This not only leads to high lubricant costs but also risks contaminating the finished film product due to lubricant residue. Therefore, the industry is increasingly adopting polymer or polymer composite material sliders to replace traditional materials. These sliders utilize micro-lubrication technology to achieve efficient friction reduction, significantly lowering lubricant consumption and contamination risks. However, rapid wear of the slider under high-speed, high-pressure conditions can cause equipment failure or production interruptions. Therefore, a precise testing device is urgently needed to verify the wear resistance of materials before application, ensuring their stability and durability under real-world conditions.

[0003] Existing testing methods generally suffer from low matching with real-world working conditions and limited testing parameters, making it difficult to comprehensively evaluate the wear resistance characteristics of sliders made of different materials. For example, traditional testing devices cannot flexibly simulate dynamic conditions such as linear velocity and pressure in actual production, and lack a real-time monitoring mechanism for wear. To address these issues, this invention proposes a dedicated device for slider wear resistance testing. This device integrates a rotating grinding table and clamping assembly, along with a transmission component, to achieve precise feeding and automatic return functions. Furthermore, a displacement sensor monitors displacement data in real time, significantly improving the accuracy and adaptability of wear resistance testing. Utility Model Content

[0004] The purpose of this invention is to provide a device suitable for testing the wear resistance of sliders.

[0005] The innovation of this utility model lies in ensuring the stability of the grinding process by rotating the grinding table, and using symmetrically arranged clamping components combined with a lead screw transmission mechanism to achieve precise feeding and return of the slider. The device is equipped with an elastic adjustment mechanism, and at the same time, it uses a displacement sensor to monitor the vertical displacement of the slider in real time, improving data accuracy, thereby improving the reliability and applicability of the testing device.

[0006] To achieve the aforementioned objectives, the technical solution of this utility model is as follows: a device for testing the wear resistance of a slider, comprising a worktable, characterized in that a rotating grinding table for performing slider wear resistance testing is provided on the worktable; clamping assemblies for clamping the slider to be tested are symmetrically arranged on both sides of the rotating grinding table; a conveying assembly for driving the clamping assemblies closer to or further away from the rotating grinding table is provided between the clamping assemblies and the worktable; an elastic adjustment element is provided between the clamping assemblies and the conveying assembly; the clamping assembly includes a clamping groove and a pressing mechanism located at the top of the clamping groove for driving the clamping groove to move up and down vertically; a displacement sensor for monitoring the vertical displacement of the clamping assembly is also provided above the clamping assembly. By setting symmetrical clamping assemblies and an elastic adjustment element, the slider to be tested can be subjected to force synchronously in both directions, improving the uniformity of the test; the displacement sensor monitors the vertical displacement in real time, achieving accurate quantitative assessment of wear; and the combination of the conveying assembly enables position adjustment of the clamping assembly, expanding the applicable scenarios of the overall device.

[0007] Furthermore, the rotary grinding table includes a bearing housing fixed to the worktable and a rotating shaft passing through the bearing housing. A grinding element is provided at the top of the rotating shaft, and a primary motor for driving the rotating shaft is provided at the bottom of the rotating shaft. The combined structure of the bearing housing and the rotating shaft enhances the axial stability of the rotary grinding table and reduces vibration interference. The separate grinding element design facilitates the replacement of grinding elements of different materials or specifications, improving testing flexibility.

[0008] Furthermore, the displacement sensor is a laser displacement sensor, and the worktable is provided with a first bracket to fix the displacement sensor above the clamping assembly. Using a laser displacement sensor, combined with the rigidly fixed first bracket, significantly improves the accuracy of wear measurement.

[0009] Furthermore, the clamping groove opening width is greater than the thickness of the grinding workpiece, and a slider mounting hole is provided within the clamping groove. This design, where the clamping groove opening width is greater than the thickness of the grinding workpiece, ensures complete coverage of the contact surface between the grinding workpiece and the slider, eliminating edge effects; the built-in slider mounting hole enables rapid positioning and clamping of the slider, improving testing efficiency.

[0010] Furthermore, the transmission component is a lead screw mechanism, which includes a lead screw and a second motor that drives the lead screw to rotate. A movable block, helically connected to the lead screw, is mounted on the lead screw. The lead screw mechanism is horizontally fixed to the worktable. Utilizing the high-precision transmission characteristics of the lead screw mechanism improves the movement and positioning accuracy of the clamping component, ensuring test repeatability.

[0011] Furthermore, the elastic adjustment component includes several threaded sleeves vertically fixed to the top of the moving block. The outer wall of each threaded sleeve is threaded with an adjusting nut for adjusting the initial height of the clamping assembly. A spring and a spring spindle are located inside each threaded sleeve. The upper end of the spring spindle is fixedly connected to the clamping groove, and the lower end presses against the spring. The initial position of the clamping assembly is adjusted through the cooperation of the threaded sleeves and adjusting nuts. The cooperation between the spring spindle and the spring ensures sufficient downward pressure space when the pressing mechanism drives the clamping groove downward. At the end of the test, the spring provides a retraction force.

[0012] Furthermore, a connecting plate is provided between the elastic adjusting member and the moving block, and the threaded sleeve is welded to the connecting plate. A pad is provided below the connecting plate. This welded connection plate and pad combination structure extends the service life of the device.

[0013] Furthermore, the first and second motors are either servo motors or stepper motors. By selecting servo motors or stepper motors, precise closed-loop control of the rotation speed of the grinding table and the displacement of the clamping assembly can be achieved, ensuring the stability and repeatability of the test parameters.

[0014] Furthermore, the pressing mechanism includes a vertically arranged cylinder and a cylinder piston rod located at the bottom of the cylinder. The cylinder is fixed by a second bracket, and the cylinder piston rod is rigidly connected to the top of the clamping groove. By using the cylinder as the pressing mechanism, the adjustable cylinder pressure can be adapted to the load requirements of different wear tests.

[0015] The beneficial effects of this utility model are:

[0016] 1. By setting up symmetrical clamping components and elastic adjustment components, the tested slider can be subjected to bidirectional synchronous force, improving the uniformity of the test; the displacement sensor is used to monitor the vertical displacement in real time, realizing accurate quantitative assessment of wear; the position adjustment of the clamping components is realized by combining the transmission component, expanding the applicable scenarios of the overall device; the combination structure of bearing seat and rotating shaft enhances the axial stability of the rotating grinding table and reduces vibration interference; the split grinding component design makes it easy to replace grinding components of different materials or specifications, improving the flexibility of the test.

[0017] 2. Employing a laser displacement sensor combined with a rigidly fixed primary bracket significantly improves the accuracy of wear measurement. The design of the clamping groove opening width being greater than the thickness of the grinding workpiece ensures complete coverage of the contact surface between the grinding workpiece and the slider, eliminating edge effects. Built-in slider mounting holes enable rapid positioning and clamping of the slider, improving testing efficiency. The high-precision transmission characteristics of the lead screw mechanism enhance the movement and positioning accuracy of the clamping assembly, ensuring test repeatability. The initial position of the clamping assembly is adjusted through the cooperation of a threaded sleeve and an adjusting nut. The spring spindle and spring cooperation provide sufficient downward pressure space for the pressing mechanism when driving the clamping groove downward. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a cross-sectional view of the elastic adjustment component of this utility model.

[0020] In the diagram: 1. Workbench; 2. Rotary grinding table; 21. Bearing seat; 22. Rotary shaft; 23. Grinding workpiece; 24. Motor No. 1; 3. Clamping assembly; 31. Clamping groove; 32. Pressing mechanism; 33. Slider mounting hole; 4. Conveying assembly; 41. Lead screw; 42. Motor No. 2; 43. Moving block; 5. Elastic adjustment component; 51. Threaded sleeve; 52. Adjusting nut; 53. Spring; 54. Spring spindle; 6. Displacement sensor; 7. Support No. 1; 8. Connecting plate; 9. Pad plate; 10. Cylinder; 11. Cylinder piston rod; 12. Support No. 2. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0022] Example 1: As Figure 1 , 2The device shown is suitable for testing the wear resistance of a slider. It includes a worktable 1, on which a rotating grinding table 2 for conducting wear resistance tests is mounted. Clamping assemblies 3 for clamping the slider under test are symmetrically arranged on both sides of the rotating grinding table 2. A conveying assembly 4 is provided between the clamping assembly 3 and the worktable 1 to drive the clamping assembly 3 closer to or further away from the rotating grinding table 2. An elastic adjusting element 5 is provided between the clamping assembly 3 and the conveying assembly 4. The clamping assembly 3 includes a clamping groove 31 and a pressing mechanism 32 located at the top of the clamping groove 31 for driving the clamping groove 31 to move vertically up and down. A displacement sensor 6 is also provided above the clamping assembly 3 to monitor the vertical displacement of the clamping assembly 3. The rotating grinding table 2 includes a bearing seat 21 fixed to the worktable 1 and a rotating shaft 22 passing through the bearing seat 21. A grinding element 23 is provided at the top of the rotating shaft 22, and a primary motor 24 for driving the rotating shaft 22 is provided at the bottom of the rotating shaft 22. The displacement sensor 6 is a laser displacement sensor, and a primary bracket 7 is provided on the worktable 1 to fix the displacement sensor 6 above the clamping assembly 3. The clamping groove 31 has a width greater than the thickness of the grinding workpiece 23, and a slider mounting hole 33 is provided inside the clamping groove 31. The transmission assembly 4 is a lead screw mechanism, which includes a lead screw 41 and a second motor 42 that drives the lead screw 41 to rotate. A moving block 43 is provided on the lead screw 41 and is helically connected to the lead screw 41. The lead screw mechanism is horizontally fixed on the workpiece 1. The elastic adjustment component 5 includes several threaded sleeves 51 that are vertically fixed to the top of the moving block 43. The outer wall of the threaded sleeve 51 is threaded with an adjusting nut 52 for adjusting the initial height of the clamping assembly 3. A spring 53 and a spring spindle 54 are provided inside the threaded sleeve 51. The upper end of the spring spindle 54 is fixedly connected to the clamping groove 31, and the lower end presses against the spring 53. A connecting plate 8 is provided between the elastic adjustment component 5 and the moving block 43. The threaded sleeve 51 and the connecting plate 8 are fixed by welding. A pad 9 is provided below the connecting plate 8. The first motor 24 and the second motor 42 are either servo motors or stepper motors. The pressing mechanism 32 includes a vertically arranged cylinder 10 and a cylinder piston rod 11 located at the bottom of the cylinder 10. The cylinder 10 is fixed by a second bracket 12, and the cylinder piston rod 11 is rigidly connected to the top of the clamping groove 31.

[0023] The working principle of this utility model is as follows: First, adjust the initial state of each component of the overall device. The slider to be tested is installed in the clamping groove 31 through the slider mounting hole 33, and the initial height of the clamping groove 31 is adjusted using the threaded sleeve 51 and adjusting nut 52 to maintain an appropriate gap with the upper and lower surfaces of the grinding workpiece 23. Then, drive the lead screw mechanism to move the clamping assembly 3 to a suitable test position. Simultaneously, adjust the downward pressure of the cylinder 10 to a preset value to ensure that the slider can stably contact the grinding workpiece 23 during the test. Start the first motor 24 at the bottom of the bearing seat 21 to drive the rotating shaft 22 to rotate the grinding workpiece 23, and adjust the motor speed to match the test requirements. At the same time, the cylinder 10 applies a set pressure to press the clamping groove 31 downwards, ensuring full contact between the slider and the grinding workpiece 23, and the slider wear resistance test begins. During the test, displacement sensor 6 monitors the vertical displacement of the clamping groove in real time, i.e., the wear of the slider. When the wear of the slider reaches the set upper limit, or the test time reaches the preset value, the entire device automatically stops the test; motor 24 stops rotating, cylinder 10 retracts, and clamping groove 31 automatically springs up under the action of bottom spring 53, releasing the slider from contact with the grinding workpiece. Subsequently, the control screw mechanism retracts the clamping assembly 3 to a safe position, facilitating the operator to disassemble the fixture and remove the tested slider. The entire test process ensures accurate evaluation of the slider's wear resistance and improves the reliability and repeatability of the experiment.

[0024] In summary, the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A device for testing the wear resistance of sliders, comprising a worktable, characterized in that, The workbench is equipped with a rotating grinding table for performing wear resistance testing on a slider. The rotating grinding table is symmetrically equipped with clamping assemblies on both sides for clamping the slider to be tested. A conveying assembly is provided between the clamping assembly and the workbench for driving the clamping assembly to move closer to or away from the rotating grinding table. An elastic adjustment element is provided between the clamping assembly and the conveying assembly. The clamping assembly includes a clamping groove and a pressing mechanism located at the top of the clamping groove for driving the clamping groove to move up and down in the vertical direction. A displacement sensor is also provided above the clamping assembly for monitoring the vertical displacement of the clamping assembly.

2. The device for testing the wear resistance of sliders according to claim 1, characterized in that, The rotating grinding table includes a bearing seat fixed on the worktable and a rotating shaft passing through the bearing seat. The top of the rotating shaft is provided with a grinding element, and the bottom of the rotating shaft is provided with a No. 1 motor that drives the rotating shaft.

3. The device for testing the wear resistance of sliders according to claim 1, characterized in that, The displacement sensor is a laser displacement sensor, and the workbench is provided with a first bracket to fix the displacement sensor above the clamping assembly.

4. The device for testing the wear resistance of sliders according to claim 2, characterized in that, The clamping groove has a width greater than the thickness of the grinding workpiece, and a slider mounting hole is provided inside the clamping groove.

5. The device for testing the wear resistance of sliders according to claim 1, characterized in that, The transmission component is a lead screw mechanism, which includes a lead screw and a second motor that drives the lead screw to rotate. The lead screw is provided with a moving block that is helically connected to the lead screw, and the lead screw mechanism is horizontally fixed on the worktable.

6. The device for testing the wear resistance of sliders according to claim 1, characterized in that, The elastic adjustment component includes several threaded sleeves that are vertically fixed to the top of the moving block. The outer wall of the threaded sleeve is threaded with an adjusting nut for adjusting the initial height of the clamping assembly. The threaded sleeve contains a spring and a spring spindle. The upper end of the spring spindle is fixedly connected to the clamping groove, and the lower end presses against the spring.

7. The device for testing the wear resistance of sliders according to claim 6, characterized in that, A connecting plate is provided between the elastic adjusting member and the moving block, the threaded sleeve is fixed to the connecting plate by welding, and a pad is provided below the connecting plate.

8. The device for testing the wear resistance of a slider according to claim 5, characterized in that, The No. 1 and No. 2 motors are either servo motors or stepper motors.

9. The device for testing the wear resistance of a slider according to claim 2, characterized in that, The pressing mechanism includes a vertically arranged cylinder and a cylinder piston rod located at the bottom of the cylinder. The cylinder is fixed by a second bracket, and the cylinder piston rod is rigidly connected to the top of the clamping groove.

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