A sliding friction coefficient control device

Abstract

The utility model provides a kind of sliding friction coefficient control equipment, comprising: workbench and fixedly installed on its top object carrier, the clamping mechanism for being equipped with for fixing plate on the object carrier;Fixedly installed on the top of workbench mount;Hydraulic cylinder is fixedly installed on the top of mount, and the output end of the hydraulic cylinder is movable through mount. By placing plate on object carrier, and by clamping mechanism to plate is fixed, then by treading control pedal, cooperate pipeline and hydraulic pump to hydraulic cylinder is carried out hydraulic transmission, so that the output end of hydraulic cylinder is driven to move down punch, make punch down cooperation processing punch groove and plate contact punch, punch out round piece sample into processing punch groove and discharge outward, so as to realize the effect of quick sample preparation, ensure the regularity and safety of sample edge, effectively improve the sample preparation work efficiency, save a lot of sliding friction coefficient detection work time.

Description

Technical Field

[0001] This utility model relates to the field of sample preparation equipment technology, specifically to a sliding friction coefficient control device. Background Technology

[0002] Zn-Fe alloyed hot-dip galvanized steel sheet (hereinafter referred to as GA sheet) is mainly supplied to Japanese customers such as NISSAN, TOYOTA, and HONDA for automotive applications. The coefficient of sliding friction can quickly evaluate the frictional performance of the alloyed coating on the galvanized steel sheet, thereby providing a better assessment of product performance.

[0003] Currently, the preparation of samples for the coefficient of sliding friction requires manual cutting of 300mm x 300mm square pieces using a shearing machine. After the samples are prepared, they are then manually cut into 50mm diameter circular pieces using scissors before the coefficient of friction is measured. However, this method of sample preparation has the following shortcomings:

[0004] The sliding friction coefficient has relatively high requirements for the sample surface. Manual sample preparation often scratches the sample surface, resulting in inaccurate experimental conclusions.

[0005] Furthermore, when manually cutting circular samples, there will be many burrs on the edges, which may pose a risk of cutting people or result in insufficient sample precision. Utility Model Content

[0006] This invention proposes a sliding friction coefficient control device, which solves the problems in related technologies where manual sample preparation often scratches the sample surface, leading to inaccurate experimental conclusions, and where manual cutting of circular samples can injure personnel or result in insufficient sample precision.

[0007] The technical solution of this utility model is as follows: a sliding friction coefficient control device, comprising: a workbench and a loading platform fixedly installed on its top, wherein the loading platform is provided with a clamping mechanism for fixing the plate.

[0008] A fixed bracket that is permanently installed on the top of the workbench;

[0009] A hydraulic cylinder is fixedly installed on the top of the mounting frame, and the output end of the hydraulic cylinder moves through the mounting frame;

[0010] A hydraulic pump is fixedly installed on the top of the hydraulic cylinder, and the output end of the hydraulic pump is connected to the oil inlet of the hydraulic cylinder through a pipe;

[0011] A punch is fixedly connected to the output end of a hydraulic cylinder, and a machining groove corresponding to the punch is opened on the top of the platform;

[0012] And a control pedal fixedly installed on one side of the workbench, the control pedal being connected to the input end of the hydraulic pump via an oil pipe.

[0013] Preferably, the clamping mechanism includes two grooves formed on the top of the platform, a bidirectional screw rotatably connected inside one groove, a guide rod fixedly installed inside the other groove, two sliders 1 threadedly connected to the surface of the bidirectional screw, two sliders 2 slidably connected to the surface of the guide rod, and a clamping plate fixedly installed on the top of adjacent sliders 1 and sliders 2. One end of the bidirectional screw extends out of the platform and is connected to a handwheel.

[0014] Preferably, the output end of the hydraulic cylinder is provided with a pressing mechanism for assisting in fixing the plate.

[0015] The pressing mechanism includes a mounting plate fixedly installed on the surface of the hydraulic cylinder output end, a limiting movable rod symmetrically slidably connected through the mounting plate, a pressing block fixedly connected to the bottom end of the limiting movable rod, and a spring sleeved on the surface of the limiting movable rod. The two ends of the spring are respectively connected to the top end of the limiting movable rod and the mounting plate.

[0016] Preferably, the workbench has a discharge chute connected to the processing groove inside, and two snap-fit ​​shells are symmetrically fixedly installed on one side of the workbench, with a collection box slidably snapped into the inside of the snap-fit ​​shell.

[0017] Preferably, the platform is provided with a moving mechanism for adjusting the position of the processing plate.

[0018] The moving mechanism includes a one-way screw rotatably connected to one side of the platform, a moving block threadedly connected to the surface of the one-way screw and sliding with the platform, a motor fixedly installed on one side of the platform, and a pusher plate fixedly installed on the top of the moving block. The output end of the motor is connected to the one-way screw.

[0019] The working principle and beneficial effects of this utility model are as follows:

[0020] By placing the sheet material on a platform and fixing it with a clamping mechanism, and then controlling the pedal, hydraulic transmission is achieved through pipes and a hydraulic pump to a hydraulic cylinder. This causes the output end of the hydraulic cylinder to extend and drive the punch downwards, allowing the punch to contact the sheet material in a punching groove to create a hole. The punched circular sample enters the punching groove and is discharged outwards, thus achieving rapid sample preparation. Compared to traditional sample preparation methods, there is no need to trim on a shearing machine, shortening the sample preparation steps and reducing the risk of scratches on samples and cuts to personnel during the process. This ensures the neatness and safety of the sample edges, effectively improving the efficiency of sample preparation and saving a significant amount of time spent on sliding friction coefficient testing. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 2 This is a partial three-dimensional structural diagram of the fixing frame of this utility model;

[0024] Figure 3 This is a partial three-dimensional structural diagram of the stage of this utility model;

[0025] Figure 4 This is a partial three-dimensional structural diagram of the collection box of this utility model;

[0026] In the diagram: 1. Workbench; 2. Carrying platform; 3. Fixing frame; 4. Hydraulic cylinder; 5. Hydraulic pump; 6. Punch; 7. Control pedal; 8. Gutter; 9. Bidirectional screw; 10. Guide rod; 11. Slider 1; 12. Slider 2; 13. Clamping plate; 14. Mounting plate; 15. Limiting rod; 16. Lowering block; 17. Spring; 18. Discharge chute; 19. Snap-fit ​​shell; 20. Collection box; 21. One-way screw; 22. Moving block; 23. Motor; 24. Pusher plate. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] Please see Figure 1 - Figure 4 The present invention provides a sliding friction coefficient control device, comprising: a workbench 1 and a loading platform 2 fixedly installed on its top, the loading platform 2 being provided with a clamping mechanism for fixing the plate.

[0030] A fixed bracket 3 is fixedly installed on the top of the workbench 1;

[0031] A hydraulic cylinder 4 is fixedly installed on the top of the fixed frame 3, and the output end of the hydraulic cylinder 4 moves through the fixed frame 3;

[0032] A hydraulic pump 5 is fixedly installed on the top of the hydraulic cylinder 4, and the output end of the hydraulic pump 5 is connected to the oil inlet of the hydraulic cylinder 4 through a pipe.

[0033] The punch 6 is fixedly connected to the output end of the hydraulic cylinder 4, and the top of the platform 2 is provided with a machining groove 8 corresponding to the punch 6;

[0034] The control pedal 7 is fixedly installed on one side of the workbench 1. The control pedal 7 is connected to the input end of the hydraulic pump 5 via an oil pipe, and is connected to an external hydraulic oil supply device via a pipeline. The control pedal 7 is a foot-operated control valve, which is a publicly available prior art technology. For example, the PVH foot-operated pilot control valve with specifications PVH1 / 2 / 3 / 4 in Jiangsu Hengli Hydraulic Co., Ltd., and the pedal-operated hydraulic control valve with specifications SVM510, SVM520-SVM521 and SVM500 in Jiuxiang International Trade (Shanghai) Co., Ltd.

[0035] The technical solution provided in this embodiment is as follows: In use, the plate is placed on the platform 2 and fixed by the clamping mechanism to ensure stability during punching. Then, by stepping on the control pedal 7, hydraulic transmission is carried out to the hydraulic cylinder 4 through the pipeline and hydraulic pump 5. This causes the output end of the hydraulic cylinder 4 to extend and drive the punch 6 to move downward. The punch 6 moves downward to contact the plate with the processing groove 8 to punch. At the same time, the punched circular sample enters the processing groove 8 and is discharged outward. Therefore, the effect of rapid sample preparation is achieved. Compared with the traditional sample preparation method, there is no need to trim on the shearing machine, which shortens the sample preparation steps and reduces the possibility of sample scratches and personnel cuts during the sample preparation process. It ensures the neatness and safety of the sample edges, effectively improves the efficiency of sample preparation, and saves a lot of time for sliding friction coefficient testing.

[0036] It should be noted that two control methods can be used between the control pedal 7 and the hydraulic pump 5, as detailed below:

[0037] Integrated electrical switch method: A micro switch is installed on the control pedal 7. When the pedal is stepped on, the micro switch is triggered to connect the power supply to the hydraulic pump 5 so that it works, and vice versa (common in small hydraulic systems, such as hydraulic lifting platforms, manual presses, etc.).

[0038] Oil circuit on / off control method: The hydraulic pump 5 operates continuously, providing a constant pressure oil source (equipped with an accumulator or unloading circuit for energy saving). The control pedal 7 acts as a control valve, used only to control the oil flow. That is, pressing the control pedal 7 allows the oil to flow through the hydraulic pump 5 and be pressurized before entering the hydraulic cylinder 4 to perform the action. Conversely, pressing it off closes the circuit or returns the oil, while the hydraulic pump 5 remains in standby or low-pressure circulation mode (common in complex hydraulic systems, such as construction machinery and machine tools).

[0039] Furthermore, the clamping mechanism includes two grooves formed on the top of the platform 2, a bidirectional screw 9 rotatably connected inside one groove, a guide rod 10 fixedly installed inside the other groove, two sliders 11 threadedly connected to the surface of the bidirectional screw 9, two sliders 12 slidably connected to the surface of the guide rod 10, and a clamping plate 13 fixedly installed on the top of the adjacent sliders 11 and sliders 12. One end of the bidirectional screw 9 extends out of the platform 2 and is connected to a handwheel.

[0040] Specifically, after the processing board is placed on the platform 2, the handwheel is turned to drive the bidirectional screw 9 to rotate, which causes the two sliders 11 to move closer to each other. Under the action of the clamping plate 13, the slider 12 moves closer to each other along the guide rod 10, so that the two clamping plates 13 move closer to each other and contact the board, thereby achieving the function of clamping and fixing the board to ensure the stability of the board processing process.

[0041] Furthermore, the output end of the hydraulic cylinder 4 is equipped with a pressing mechanism for assisting in fixing the plate.

[0042] The pressing mechanism includes a mounting plate 14 fixedly installed on the output end surface of the hydraulic cylinder 4, a limiting movable rod 15 symmetrically slidably connected through the mounting plate 14, a pressing block 16 fixedly connected to the bottom end of the limiting movable rod 15, and a spring 17 sleeved on the surface of the limiting movable rod 15. The two ends of the spring 17 are respectively connected to the top end of the limiting movable rod 15 and the mounting plate 14.

[0043] Specifically, when the hydraulic cylinder 4 drives the punch 6 to move down and press, the pressing block 16 will first contact the top of the plate. As the hydraulic cylinder 4 moves down, the limiting rod 15 and the mounting plate 14 slide relative to the tension spring 17, thereby enabling the pressing block 16 to press down and fix the top of the plate, further ensuring the stability of the plate fixation.

[0044] Furthermore, the workbench 1 has a discharge chute 18 connected to the processing groove 8 inside. Two snap-fit ​​shells 19 are symmetrically fixed on one side of the workbench 1. A collection box 20 is slidably snapped into the inside of the snap-fit ​​shell 19. The inclined surface of the discharge chute 18 and the inner bottom wall of the snap-fit ​​shell 19 are equipped with soft pads, which can effectively prevent the sample from being worn and bumped during the slippage process.

[0045] Specifically, the sample processed and stamped by the punch 6 enters the discharge chute 18 through the processed groove 8, and slides down the slope of the discharge chute 18 into the collection box 20 for collection, which facilitates the unified collection of the sample. Then the collection box 20 is moved up and separated from the snap-fit ​​shell 19, which makes it easy to disassemble the collection box 20 to process the sample.

[0046] Example 2

[0047] Based on Embodiment 1, in this embodiment: the stage 2 is provided with a moving mechanism for adjusting the position of the processing plate.

[0048] The moving mechanism includes a one-way screw 21 rotatably connected to one side of the platform 2, a moving block 22 threadedly connected to the surface of the one-way screw 21 and sliding with the platform 2, a motor 23 fixedly installed on one side of the platform 2, and a pusher plate 24 fixedly installed on the top of the moving block 22. The output end of the motor 23 is connected to the one-way screw 21.

[0049] The technical solution provided in this embodiment is as follows: When making samples at different positions on a plate, the plate is released from its fixed state, and the motor 23 drives the one-way screw 21 to rotate, causing the moving block 22 to move along the length of the platform 2. The moving block 22 drives the pusher plate 24 to move synchronously, so that the pusher plate 24 can contact the plate and push the plate to move a certain distance, thereby achieving the purpose of adjusting the position of the secondary stamping and cutting. This facilitates sample making at different positions on the plate, eliminates the need for manual movement of the plate, reduces safety risks, and ensures the safety of sample making.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for controlling the coefficient of sliding friction, characterized in that, include: The workbench (1) and the platform (2) fixedly installed on its top, the platform (2) being provided with a clamping mechanism for fixing the plate; A fixed bracket (3) is fixedly installed on the top of the workbench (1); A hydraulic cylinder (4) is fixedly installed on the top of the fixed frame (3), and the output end of the hydraulic cylinder (4) moves through the fixed frame (3). A hydraulic pump (5) is fixedly installed on the top of the hydraulic cylinder (4), and the output end of the hydraulic pump (5) is connected to the oil inlet of the hydraulic cylinder (4) through a pipe; A punch (6) is fixedly connected to the output end of the hydraulic cylinder (4), and a machining groove (8) corresponding to the punch (6) is opened on the top of the platform (2). And a control pedal (7) fixedly installed on one side of the workbench (1), the control pedal (7) being connected to the input end of the hydraulic pump (5) via an oil pipe.

2. The sliding friction coefficient control device according to claim 1, characterized in that, The clamping mechanism includes two grooves on the top of the platform (2), a bidirectional screw (9) rotatably connected inside one groove, a guide rod (10) fixedly installed inside the other groove, two sliders (11) threadedly connected to the surface of the bidirectional screw (9), two sliders (12) slidably connected to the surface of the guide rod (10), and a clamping plate (13) fixedly installed on the top of the adjacent sliders (11) and sliders (12). One end of the bidirectional screw (9) extends out of the platform (2) and is connected to a handwheel.

3. The sliding friction coefficient control device according to claim 1, characterized in that, The hydraulic cylinder (4) is equipped with a pressing mechanism at its output end for assisting in fixing the plate.

4. The sliding friction coefficient control device according to claim 3, characterized in that, The pressing mechanism includes a mounting plate (14) fixedly installed on the output end surface of the hydraulic cylinder (4), a limiting movable rod (15) symmetrically slidably connected through the mounting plate (14), a pressing block (16) fixedly connected to the bottom end of the limiting movable rod (15), and a spring (17) sleeved on the surface of the limiting movable rod (15). The two ends of the spring (17) are respectively connected to the top end of the limiting movable rod (15) and the mounting plate (14).

5. The sliding friction coefficient control device according to claim 1, characterized in that, The workbench (1) has a discharge chute (18) connected to the processing punch (8) inside. Two snap-fit ​​shells (19) are symmetrically fixed on one side of the workbench (1). A collection box (20) is slidably snapped into the inside of the snap-fit ​​shell (19).

6. The sliding friction coefficient control device according to claim 1, characterized in that, The platform (2) is equipped with a moving mechanism for adjusting the position of the processing plate.

7. The sliding friction coefficient control device according to claim 6, characterized in that, The moving mechanism includes a one-way screw (21) rotatably connected to one side of the platform (2), a moving block (22) threadedly connected to the surface of the one-way screw (21) and sliding with the platform (2), a motor (23) fixedly installed on one side of the platform (2), and a pusher plate (24) fixedly installed on the top of the moving block (22). The output end of the motor (23) is connected to the one-way screw (21).

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