Surface wear resistance test device for workpiece with outer arc surface

Abstract

The utility model relates to an outer arc surface workpiece surface wear resistance test device, which comprises a friction head, a pressure applying device and a support cylinder, the support cylinder is fixedly connected on a horizontal rotating shaft, one end of the rotating shaft is fixedly connected with a gear, one side of the rotating shaft is vertically provided with a rack, two ends of the rack are respectively connected with a slide rail extending outwards in the axial direction, and the slide rail is fixedly connected with the friction head. The two sliding rails are respectively connected to a fixedly-arranged sliding block in a sliding mode, the rack is meshed with the gear, and one end of one sliding rail is connected with a driving device which drives the sliding rail to do reciprocating motion back and forth in the axial direction of the sliding rail. The outer arc surface workpiece is supported by the supporting cylinder, the supporting cylinder is driven by a rack and gear transmission structure to swing back and forth at a certain angle, and meanwhile, the friction head is arranged over the supporting cylinder, so that the outer arc surface workpiece moves along with the supporting cylinder; the friction head can apply the same pressure to different positions of the surface of the outer arc-surface workpiece, so that the wear resistance test of balanced pressure on the surface of the outer arc-surface workpiece is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of measurement and testing, and in particular relates to a wear-resistant testing device for an outer arc surface workpiece. Background Art

[0002] Surface wear test is mainly a technical means to detect the surface quality of workpieces, and is often used to test the surface wear resistance of workpieces after surface treatment. Commonly used wear test devices are mainly for flat workpieces. Flat workpieces are placed on a linear reciprocating motion device, and friction objects are pressed against the surface of the workpiece to be tested to detect changes in the surface treatment layer of the workpiece after repeated friction.

[0003] However, the surface shape of the workpiece is actually very complex. It not only has a flat surface, but also an outer arc surface. When the workpiece is subjected to surface treatment, the treatment effect of the flat surface is not exactly the same as that of the outer arc surface. If only the results of the surface wear test of the flat workpiece are used to evaluate the surface wear resistance of the outer arc surface of the workpiece, there is a problem of generalizing, which is not enough to reflect the true results of the workpiece surface treatment. Therefore, it is necessary to conduct a surface wear test on the outer arc surface of the workpiece. However, the commonly used surface wear test equipment is not suitable for the detection of surface wear resistance on the outer arc surface of the workpiece. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to provide a surface wear resistance test device for an outer arc surface workpiece, so as to solve the technical problem that the surface wear resistance test device cannot test the surface wear resistance performance of the outer arc surface of the workpiece or the force applied to the outer arc surface of the workpiece during the test is not constant, which affects the detection result.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a surface wear resistance testing device for an outer arc surface workpiece, including a friction head and a pressure device connected to the friction head, and also including a support cylinder located directly below the friction head, the support cylinder is fixedly connected to a horizontally arranged rotating shaft, the support cylinder and the rotating shaft are coaxially arranged, and both ends of the rotating shaft are rotatably connected to the support, one end of the rotating shaft is fixedly connected to a gear, and a rack is vertically arranged on one side of the rotating shaft, and both ends of the rack are respectively connected to slide rails extending axially outward, and the two slide rails are respectively slidably connected to a fixedly arranged sliding block, the rack is meshed with the gear, and one end of a slide rail is connected to a driving device that drives the slide rail to move back and forth along its own axial direction.

[0006] As a preferred solution, the driving device includes a motor, a turntable coaxially connected to the output shaft end of the motor, and a connecting rod rotatably connected to the outer edge of the turntable, and the other end of the connecting rod is rotatably connected to one end of the slide rail.

[0007] As a preferred solution, the gear is fan-shaped.

[0008] As a preferred solution, two positioning rings coaxially arranged with the support tube are fixedly connected to the support tube, and the two positioning rings are respectively provided with positioning holes evenly distributed in the circumference, and the positioning holes on the two positioning rings are directly opposite to each other.

[0009] As a preferred embodiment, the pressure-applying device includes a fixed base with a guide hole vertically opened on the base, a guide rod slidably inserted in the guide hole, the central axis of the guide rod vertically intersects with the central axis of the support tube, the friction head is fixedly connected to the bottom end of the guide rod, the upper end of the guide rod is exposed above the base and fixedly connected to a block, an upwardly extending center rod is vertically connected to the block, the center rod is coaxial with the guide rod, a plurality of counterweights are sleeved on the center rod, and the counterweights are stacked on the block.

[0010] As a preferred solution, the center rod is a screw rod, the top end of the screw rod is threadedly connected to a gland, the bottom surface of the gland is fixedly connected to a buffer pad, and the gland is crimped onto the uppermost counterweight block through the buffer pad.

[0011] As a preferred solution, the periphery of the stopper is connected to an anti-deflection cylinder extending downward and having an open lower end, and the anti-deflection cylinder is slidably sleeved on the top outer wall of the base.

[0012] The beneficial effect of the utility model is as follows: the utility model adopts a support cylinder to support the outer arc surface workpiece, and utilizes the transmission structure of the rack and pinion to drive the support cylinder to make a reciprocating swing at a certain angle, and at the same time, the friction head is arranged directly above the support cylinder, so that when the outer arc surface workpiece moves with the support cylinder, the friction head can apply the same pressure to different positions on the surface of the outer arc surface workpiece, thereby realizing the wear resistance performance test of the outer arc surface workpiece with balanced pressure on the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 It is a specific structural schematic diagram of the utility model;

[0015] Figure 1 In: 1. Friction head, 2. Pressure device, 3. Support cylinder, 4. Rotating shaft, 5. Support, 6. Gear, 7. Rack, 8. Slide rail, 9. Slider, 10. Motor, 11. Turntable, 12. Connecting rod, 13. Positioning ring, 14. Positioning hole, 15. Workpiece, 21. Base, 22. Guide hole, 23. Guide rod, 24. Stopper, 25. Center rod, 26. Counterweight, 27. Pressure cover, 28. Buffer pad, 29. Anti-bias cylinder. DETAILED DESCRIPTION

[0016] The specific implementation scheme of the utility model is described in detail below in conjunction with the accompanying drawings.

[0017] like Figure 1 The outer arc surface workpiece wear resistance testing device shown includes a friction head 1 and a pressure device 2 connected to the friction head 1, and is characterized in that it also includes a support cylinder 3 located directly below the friction head 1, the support cylinder 3 is fixedly connected to a horizontally arranged rotating shaft 4, the support cylinder 3 and the rotating shaft 4 are coaxially arranged, and both ends of the rotating shaft 4 are rotatably connected to the support 5, one end of the rotating shaft 4 is fixedly connected to a gear 6, and a rack 7 is vertically arranged on one side of the rotating shaft 4, and both ends of the rack 7 are respectively connected to axially outwardly extending slide rails 8, and the two slide rails 8 are respectively slidably connected to a fixed slider 9, the rack 7 is meshed with the gear 6, and one end of a slide rail 8 is connected to a driving device for driving the slide rail 8 to move back and forth along its own axial direction.

[0018] The driving device in this embodiment includes a motor 10, a turntable 11 coaxially connected to the output shaft end of the motor 10, and a connecting rod 12 rotatably connected to the outer edge of the turntable 11, the other end of the connecting rod 12 is rotatably connected to one end of the slide rail 8, the motor 10 drives the turntable 11 to rotate, the turntable 11 drives the slide rail 8 and the rack 7 to move back and forth through the connecting rod 12, the rack 7 drives the gear 6 to rotate, the gear 6 drives the rotating shaft 4 and the support tube 3 to rotate, the support tube 3 drives the workpiece 15 fixed thereon to rotate, and the workpiece 15 slides relative to the friction head 1.

[0019] As an improvement to the above technical solution, in this embodiment, the gear 6 is preferably designed to be fan-shaped to reduce costs.

[0020] In this embodiment, two positioning rings 13 coaxially arranged with the support tube 3 are further fixedly connected to the support tube 3, and the two positioning rings 13 have positioning holes 14 evenly distributed in the circumference, and the positioning holes 14 on the two positioning rings 13 are opposite to each other.

[0021] Since the radius of the outer arc surface workpiece may be slightly different, it may not be able to fully fit with the same support tube 3. In order to adapt workpieces 15 with different radii to the same support tube 3, a foaming model that is adapted to the concave arc shape of the workpiece 15 can be placed at the bottom of the workpiece, and the bottom surface of the foaming model is fitted with the support tube 3. Then, a pin (not shown in the figure) is passed through the corresponding positioning hole 14, and the pin is inserted into the foaming model to fix the foaming model.

[0022] like Figure 1As shown, the pressure-applying device 2 described in this embodiment includes a fixed base 21, a guide hole 22 is vertically opened on the base 21, a guide rod 23 is slidably inserted in the guide hole 22, the central axis of the guide rod 23 is perpendicularly intersected with the central axis of the support tube 3, the friction head 1 is fixedly connected to the bottom end of the guide rod 23, the upper end of the guide rod 23 is exposed above the base 21 and is fixedly connected to a block 24, a center rod 25 extending upward is vertically connected to the block 24, the center rod 25 is coaxial with the guide rod 23, a plurality of counterweights 26 are sleeved on the center rod 25, and the counterweights 26 are stacked on the block 24.

[0023] The counterweight 26 is configured as required, and the counterweight 26 directly affects the magnitude of the friction force. Since the central axis of the guide rod 23 intersects the central axis of the support tube 3 perpendicularly, and the friction head 1 is fixedly connected to the bottom end of the guide rod 23, when the workpiece 15 rotates following the support tube 3, the force applied by the friction head 1 on the workpiece 15 is always vertically downward and perpendicular to the surface of the workpiece 15. This ensures that when the workpiece 15 rotates, the friction force applied to different positions of the workpiece 15 remains constant.

[0024] In this embodiment, the center rod 25 is preferably set as a screw, the top of the screw is threadedly connected with a pressure cap 27, the bottom of the pressure cap 27 is fixedly connected with a buffer pad 28, and the pressure cap 27 is pressed on the topmost counterweight block 26 through the buffer pad 28. The fixing of the pressure cap 27 eliminates the vibration of the counterweight block 26, and improves the stability of the friction force applied by the friction head 1 on the surface of the workpiece 15.

[0025] In this embodiment, an anti-deflection cylinder 29 extending downward and open at the lower end is further connected to the periphery of the stopper 24. The anti-deflection cylinder 29 is slidably sleeved on the top outer wall of the base 21. When the friction head 1 abuts against the surface of the outer arc workpiece, the stopper 24 is separated from the base 21. The anti-deflection cylinder 29 is used to prevent the guide rod 23 from swinging, so as to ensure that the force applied to the surface of the workpiece 15 is always vertically downward, thereby improving the accuracy of the detection result.

[0026] The working process of this utility model is: Figure 1 As shown, first, lift the pressure device 2 to keep a certain distance between the friction head 1 and the support tube 3 for the installation of the workpiece 15. Then fix the workpiece 15 on the outer circumferential wall of the support tube 3 by means of attachment or crimping, and the position of the workpiece 15 is facing away from the sector gear 6. After that, gently put down the friction head 1 so that the friction head 1 abuts against the outer arc surface of the workpiece 1, set the counterweight 26, and lock the pressure cover 27. Finally, start the motor 10, the motor 10 drives the turntable 11 to rotate, the turntable 11 drives the slide rail 8 and the rack 7 to slide through the connecting rod 12, the rack 7 drives the gear 6 to rotate, the gear 6 drives the rotating shaft 4, the support tube 3 and the workpiece 15 to swing back and forth at a certain angle, and the workpiece 15 performs reciprocating friction motion relative to the friction head 1 to perform a surface wear test.

[0027] The number of friction times of the friction head 1 is determined by calculating the number of rotations of the motor or the number of rotations of the turntable 11 or the number of reciprocating movements of the slide rail 8. After the number of friction times is reached, the workpiece 15 is removed, the surface treatment layer of the workpiece 15 is detected, the state of the surface treatment layer is checked, and the wear test result is obtained.

[0028] The outer arc surface workpiece surface wear-resistance testing device of the utility model is particularly suitable for the wear-resistance test of the coating layer on the surface of curved glass.

[0029] The above embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A device for testing the wear resistance of an outer arc surface workpiece, comprising a friction head (1) and a pressure device (2) connected to the friction head (1), characterized in that: The invention also comprises a support cylinder (3) located directly below the friction head (1), the support cylinder (3) being fixedly connected to a horizontally arranged rotating shaft (4), the support cylinder (3) being coaxially arranged with the rotating shaft (4), the two ends of the rotating shaft (4) being rotatably connected to the support (5), one end of the rotating shaft (4) being fixedly connected to a gear (6), one side of the rotating shaft (4) being vertically arranged with a rack (7), the two ends of the rack (7) being respectively connected to slide rails (8) extending axially outward, the two slide rails (8) being respectively slidably connected to a fixedly arranged sliding block (9), the rack (7) being meshed with the gear (6), and one end of a slide rail (8) being connected to a driving device for driving the slide rail (8) to reciprocate along its own axial direction.

2. The outer arc surface workpiece wear resistance testing device according to claim 1 is characterized in that: The driving device comprises a motor (10), a turntable (11) coaxially connected to the output shaft end of the motor (10), and a connecting rod (12) rotatably connected to the outer edge of the turntable (11), the other end of the connecting rod (12) being rotatably connected to one end of the slide rail (8).

3. The outer arc surface workpiece wear resistance testing device according to claim 1 is characterized in that: The gear (6) is fan-shaped.

4. The outer arc surface workpiece surface wear resistance testing device according to claim 1 is characterized in that: The support tube (3) is fixedly connected to two positioning rings (13) which are coaxially arranged with the support tube (3). The two positioning rings (13) are respectively provided with positioning holes (14) evenly distributed in the circumferential direction. The positioning holes (14) on the two positioning rings (13) are aligned one by one.

5. The outer arc surface workpiece surface wear resistance testing device according to any one of claims 1 to 4, characterized in that: The pressure-applying device (2) comprises a fixedly arranged base (21), a guide hole (22) being vertically opened on the base (21), a guide rod (23) being slidably inserted in the guide hole (22), the central axis of the guide rod (23) being perpendicularly intersected with the central axis of the support tube (3), the friction head (1) being fixedly connected to the bottom end of the guide rod (23), the upper end of the guide rod (23) being exposed above the base (21) and being fixedly connected to a block (24), the block (24) being vertically connected to a center rod (25) extending upward, the center rod (25) being coaxial with the guide rod (23), the center rod (25) being sleeved with a plurality of counterweight blocks (26), the counterweight blocks (26) being stacked on the block (24).

6. The outer arc surface workpiece wear resistance testing device according to claim 5, characterized in that: The central rod (25) is a screw rod, the top end of which is threadedly connected to a gland (27), the bottom surface of which is fixedly connected to a buffer pad (28), and the gland (27) is press-fitted onto the uppermost counterweight block (26) via the buffer pad (28).

7. The outer arc surface workpiece wear resistance testing device according to claim 5, characterized in that: The stopper (24) is connected to an anti-deflection cylinder (29) extending downward and having an open lower end. The anti-deflection cylinder (29) is slidably sleeved on the top outer wall of the base (21).

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