Friction testing machine

Abstract

This invention relates to the field of testing equipment technology, and in particular to a friction testing machine, which includes a test sample rotation device and an auxiliary testing component mounting device. The test sample rotation device includes a mounting base, a rope, a counterweight, a height adjustment component, a support plate, and a rotational power element. The support plate is provided with a pressure-increasing fixing position for placing weights. The rotational power element is mounted on the support plate, and the rotating end of the rotational power element is used to connect to the test sample. The two ends of the rope are respectively connected to the support plate and the counterweight. The auxiliary testing component mounting device is located below the rotational power element. The counterweight applies tension to the support plate through the rope. By placing weights of different weights at the pressure-increasing fixing position, the pressure of the sandpaper on the workpiece can be accurately determined, thereby obtaining accurate test data. This design ensures a continuous and constant applied pressure, and the overall structure is simple, reliable, and highly automated.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a friction testing machine. Background Technology

[0002] Sandpaper, also known as sandpaper, is a material used for grinding the surface of materials such as metal and wood to make it smooth and shiny.

[0003] The abrasion resistance of sandpaper is an important indicator of its quality. Therefore, it is necessary to test the abrasion resistance of sandpaper before it leaves the factory. However, there are currently few sandpaper abrasion resistance testing devices on the market that are simple in structure and easy to use. Most manufacturers use manual hand-held electric grinding heads or air grinding mechanisms for friction testing. This testing method is labor-intensive, and it is difficult to ensure that the applied force is constant, resulting in low accuracy of the test results. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a friction testing machine with simple structure, high degree of automation, and the ability to ensure that the applied force is continuously constant.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A friction testing machine includes a test sample rotation device and an auxiliary test component mounting device. The test sample rotation device includes a mounting base, a rope, a counterweight, a height adjustment component, a bearing plate, and a rotation power element.

[0007] The support plate is provided with a pressure-boosting fixing position for placing weights. The rotating power element is installed on the support plate, and the rotating end of the rotating power element is used to connect with the test sample. The support plate is connected to the height adjustment component, and the height adjustment component is installed on the mounting base. The rope is slidably installed on the mounting base, and the two ends of the rope are respectively connected to the support plate and the counterweight. The auxiliary detection component mounting device is located below the rotating power element.

[0008] Preferably, the height adjustment assembly includes a first adjustment seat and a first power element installed on the first adjustment seat. The first adjustment seat is provided with a first guide rod. The support plate is connected to the first guide rod. The drive end of the first power element is connected to the support plate. The first power element is used to drive the support plate to slide up and down along the first guide rod.

[0009] Preferably, the height adjustment assembly further includes a second adjustment seat, an adjustment screw, and a slider. The second adjustment seat is provided with a second guide rod, the slider is connected to the second guide rod, the adjustment screw is connected to the slider, and the adjustment screw is used to drive the slider to slide up and down along the second guide rod. The second adjustment seat is mounted on the mounting base, and the first adjustment seat is mounted on the slider.

[0010] Preferably, the mounting base includes a top plate and two rope pulleys installed at both ends of the top plate, and the rope is slidably mounted on the top plate through the rope pulleys.

[0011] Preferably, it further includes a chassis, a partition, and a suction device. The partition is installed inside the chassis and divides the inner cavity of the chassis into a first accommodating space and a second accommodating space. The test sample rotating device and the auxiliary detection component mounting device are installed in the first accommodating space, and the suction device is installed in the second accommodating space.

[0012] The partition includes a base plate and a back plate connected to one side of the base plate. The base plate is provided with dust removal holes, and the back plate is provided with mounting holes. A grid is installed in the mounting holes, and the auxiliary detection device is installed on the base plate.

[0013] Preferably, it also includes a drawer box, the chassis is provided with an opening communicating with the second accommodating space, the drawer box is installed in the second accommodating space, one side wall of the drawer box is sealed to the opening, and the drawer box can be moved out of the opening.

[0014] Preferably, the device further includes a filter element mounting plate and a filter element. The filter element mounting plate is installed in the second accommodating space, dividing the second accommodating space into an upper cavity and a lower cavity. The filter element is installed on the filter element mounting plate and located in the lower cavity. The filter element mounting plate is provided with a vent hole for connecting the filter element. The suction device is installed in the upper cavity. The lower cavity is connected to the first accommodating space through the dust removal hole and the grille.

[0015] Preferably, it also includes a bracket, which is installed in the first accommodating space. There are two rotating devices for the test sample. One rotating device has an electric grinding mechanism as its rotational power element, and the other rotating device has an air grinding mechanism as its rotational power element. The bracket is provided with a crossbeam, and the two rotating devices for the test sample are arranged and installed on the crossbeam. The rotating devices for the test sample can move and adjust their positions along the crossbeam.

[0016] Preferably, the auxiliary testing component mounting device includes a linear module and a vise, wherein the vise is connected to the movable end of the linear module.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention provides a friction testing machine, including a test sample rotation device and an auxiliary testing component mounting device. The test sample rotation device includes a mounting base, a rope, a counterweight, a height adjustment component, a support plate, and a rotational power element. The support plate is provided with a pressure-pressurizing fixing position for placing weights. The rotational power element is mounted on the support plate, and the rotating end of the rotational power element is used to connect to the test sample. The support plate is connected to the height adjustment component, which is mounted on the mounting base. The rope is slidably mounted on the mounting base, and its two ends are respectively connected to the support plate and the counterweight. The auxiliary testing component mounting device is located below the rotational power element.

[0019] The sandpaper is adhered to the rotating end of the power element using an adhesive method. This adhesive design allows for easy and quick replacement of the sandpaper after testing. The counterweight is equivalent in weight to the combined weight of the support plate and the rotating power element. The counterweight applies tension to the support plate via a rope to counteract the weight of the support plate and the rotating power element itself. By placing weights of varying weights at the pressure-enhancing fixing position, the pressure exerted by the sandpaper on the workpiece can be accurately measured, thus obtaining accurate test data. This design ensures a continuous and constant applied pressure, and the overall structure is simple, reliable, and highly automated. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the hidden door panel of the present invention.

[0021] Figure 2 This is a schematic diagram of the side structure of the present invention after the side plate is hidden.

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention after the side panels are hidden.

[0023] Figure 4 This is a three-dimensional structural diagram of the test sample rotation device in this invention. Detailed Implementation

[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments. The content mentioned in the embodiments is not intended to limit the present invention.

[0025] like Figures 1 to 4 As shown, a friction testing machine includes a test sample rotation device 1 and an auxiliary test component mounting device 2. The test sample rotation device 1 includes a mounting base 11, a rope 12, a counterweight 13, a height adjustment component 3, a bearing plate 14, and a rotation power element 15.

[0026] The support plate 14 is provided with a pressure-boosting fixing position 16 for placing weights. The rotating power element 15 is installed on the support plate 14, and the rotating end of the rotating power element 15 is used to connect with the test sample. The support plate 14 is connected to the height adjustment component 3, and the height adjustment component 3 is installed on the mounting base 11. The rope 12 is slidably installed on the mounting base 11, and the two ends of the rope 12 are respectively connected to the support plate 14 and the counterweight 13. The auxiliary detection component mounting device 2 is located below the rotating power element 15.

[0027] In this embodiment of the friction testing machine, during actual testing, the workpiece is fixed on the auxiliary testing component mounting device 2, sandpaper is attached to the rotating end of the rotating power element 15, and then the rotating power element 15 is activated to rub the sandpaper on the workpiece surface. The sandpaper is removed at regular intervals and placed on the testing device for testing, and the data is recorded. During the friction process, the weight of the counterweight 13 is equivalent to the weight of the support plate 14 plus the rotating power element 15. The counterweight 13 applies tension to the support plate 14 via the rope 12 to counteract the weight of the support plate 14 and the rotating power element 15 itself. Then, by placing weights of different weights at the pressure fixing position 16, the pressure of the sandpaper on the workpiece is accurately determined, thereby obtaining accurate test data. By adding weights to apply the frictional force of the sandpaper on the workpiece, the continuous constant frictional force is effectively ensured.

[0028] In this embodiment, the height adjustment assembly 3 includes a first adjustment seat 31 and a first power element 32 installed on the first adjustment seat 31. The first adjustment seat 31 is provided with a first guide rod 33, and the support plate 14 is connected to the first guide rod 33. The driving end of the first power element 32 is connected to the support plate 14, and the first power element 32 is used to drive the support plate 14 to slide up and down along the first guide rod 33. Before the friction test, sandpaper is first attached to the rotating end of the rotating power element 15. Then, the first power element 32 drives the support plate 14 to move down closer to the workpiece. When friction is required, it moves down closer to the workpiece, and when friction stops, it moves up away from the workpiece, which facilitates the attachment and removal of sandpaper.

[0029] In this embodiment, the height adjustment assembly 3 further includes a second adjustment seat 34, an adjustment screw 35, and a slider 36. The second adjustment seat 34 is provided with a second guide rod 37, the slider 36 is connected to the second guide rod 37, and the adjustment screw 35 is connected to the slider 36. The adjustment screw 35 is used to drive the slider 36 to slide up and down along the second guide rod 37. The second adjustment seat 34 is mounted on the mounting base 11, and the first adjustment seat 31 is mounted on the slider 36. By adjusting the slider 36 using the adjustment screw 35, the first adjustment seat 31 is linked to the support plate 14 for fine-tuning up and down to ensure that the sandpaper just touches the surface of the workpiece.

[0030] In this embodiment, the mounting base 11 includes a top plate 17 and two rope pulleys 18 installed at both ends of the top plate 17. The rope 12 is slidably mounted on the top plate 17 via the rope pulleys 18. One end of the rope 12 is connected to the counterweight 13, and the rope 12 is connected to the support plate 14 after passing through the two rope pulleys 18. The two ends of the rope 12 are located at the two ends of the top plate 17, realizing the sliding function of the rope 12 to ensure the tension applied by the counterweight 13 to the support plate 14.

[0031] In this embodiment, the device also includes a chassis 4, a partition 41, and a suction device 42. The partition 41 is installed inside the chassis 4 and divides the inner cavity of the chassis 4 into a first accommodating space 43 and a second accommodating space 44. The test sample rotating device 1 and the auxiliary detection component mounting device 2 are installed in the first accommodating space 43, and the suction device 42 is installed in the second accommodating space 44.

[0032] The partition (41) includes a base plate (4c) and a back plate (4d) connected to one side of the base plate (4c). The base plate (4c) is provided with a dust removal hole (45), and the back plate (4d) is provided with a mounting hole. A grille (4e) is installed in the mounting hole. The auxiliary detection component mounting device (2) is installed on the base plate (4c).

[0033] A first accommodating space 43 and a second accommodating space 44 are respectively provided. The first accommodating space 43 is provided with an air inlet, and the second accommodating space 44 is provided with an air outlet. The first accommodating space 43 is used for friction operations, and the second accommodating space 44 is used to install the suction device 42. The suction device 42, the dust removal hole 45, and the grille 4e are used to suck all sand and dust generated in the first accommodating space 43 into the second accommodating space 44, keeping the first accommodating space 43 continuously clean to ensure that the sandpaper friction test data is not affected, and at the same time facilitating cleaning and maintenance. Through the dust removal hole 45 and the grille 4e, suction is generated on one side and the lower side of the auxiliary detection component mounting device 2 to ensure that sand and dust are quickly sucked away.

[0034] In this embodiment, a drawer box 46 is also included. The chassis 4 has an opening 47 communicating with the second accommodating space 44. The drawer box 46 is installed in the second accommodating space 44, and one side wall of the drawer box 46 covers the opening 47. The drawer box 46 can be moved out of the opening 47. The suction device 42 uses the dust removal hole 45 to suck sand and dust particles in the first accommodating space 43 into the second accommodating space 44 and finally into the drawer box 46. During cleaning, the drawer box 46 can be pulled out directly for cleaning, which is convenient and quick.

[0035] In this embodiment, a filter element mounting plate 48 and a filter element 49 are also included. The filter element mounting plate 48 is installed in the second accommodating space 44, dividing the second accommodating space 44 into an upper cavity 40 and a lower cavity 4a. The filter element 49 is installed on the filter element mounting plate 48 and located in the lower cavity 4a. The filter element mounting plate 48 is provided with a vent hole 4b connecting the filter element 49. The suction device 42 is installed in the upper cavity 40. The lower cavity 4a is connected to the first accommodating space 43 through the dust removal hole 45 and the grille 4e. Sand and dust in the first accommodating space 43 enter the lower cavity 4a through the dust removal hole 45, are then blocked by the filter element 49 in the lower cavity 4a, and fall into the drawer box 46.

[0036] In this embodiment, a support 5 is also included, which is installed in the first accommodating space 43. Two rotating devices 1 for the test sample are provided. One rotating device 1 has an electric grinding mechanism as its rotational power element 15, and the other has an air grinding mechanism. The support 5 is provided with a crossbeam 51, and the two rotating devices 1 for the test sample are arranged and installed on the crossbeam 51. The rotating devices 1 for the test sample can move and adjust their positions along the crossbeam 51. By separately providing the electric grinding mechanism and the air grinding mechanism, flexible use is possible according to the sandpaper testing requirements, without needing to replace the rotational power element 15, thus improving work efficiency.

[0037] In this embodiment, the auxiliary testing component mounting device 2 includes a linear module 21 and a vise 22, with the vise 22 connected to the movable end of the linear module 21. The linear module 21 drives the vise 22 to reciprocate in conjunction with the rotation of the sandpaper, thereby accurately testing the sandpaper and acquiring data.

[0038] In the description of this invention, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A friction testing machine, characterized in that: It includes a test sample rotation device (1) and an auxiliary test component mounting device (2). The test sample rotation device (1) includes a mounting base (11), a rope (12), a counterweight (13), a height adjustment component (3), a bearing plate (14), and a rotation power element (15). The support plate (14) is provided with a pressure fixing position (16) for placing weights. The rotating power element (15) is installed on the support plate (14). The rotating end of the rotating power element (15) is used to connect with the test sample. The support plate (14) is connected to the height adjustment component (3). The height adjustment component (3) is installed on the mounting base (11). The rope (12) is slidably installed on the mounting base (11). The two ends of the rope (12) are respectively connected to the support plate (14) and the counterweight (13). The auxiliary detection component installation device (2) is located below the rotating power element (15). The mounting base (11) includes a top plate (17) and two rope pulleys (18) installed at both ends of the top plate (17). The rope (12) is slidably installed on the top plate (17) through the rope pulleys (18). One end of the rope (12) is connected to the counterweight (13). After passing through the two rope pulleys (18), the rope (12) is connected to the bearing plate (14). The mounting base (11) also includes a chassis (4), a partition (41), and a suction device (42). The partition (41) is installed inside the chassis (4). The partition (41) divides the inner cavity of the chassis (4) into a first accommodating space (43) and a second accommodating space (44). The test sample rotation device (1) and the auxiliary testing component mounting device (2) are installed in the first accommodating space (43). The suction device (42) is installed in the second accommodating space (44). The partition (41) includes a base plate (4c) and a back plate (4d) connected to one side of the base plate (4c). The base plate (4c) is provided with dust removal holes (45), and the back plate (4d) is provided with mounting holes. A grille (4e) is installed in the mounting holes. The auxiliary detection component mounting device (2) is installed on the base plate (4c). It also includes a filter element mounting plate (48) and a filter element (49). The filter element mounting plate (48) is installed in the second accommodating space (44) and divides the second accommodating space (44) into an upper cavity (40) and a lower cavity (4a). The filter element (49) is installed on the filter element mounting plate (48) and located in the lower cavity (4a). The filter element mounting plate (48) is provided with a vent hole (4b) for connecting the filter element (49). The suction device (42) is installed in the upper cavity (40). The lower cavity (4a) is connected to the first accommodating space (43) through the dust removal hole (45) and the grille (4e).

2. The friction testing machine according to claim 1, characterized in that: The height adjustment assembly (3) includes a first adjustment seat (31) and a first power element (32) installed on the first adjustment seat (31). The first adjustment seat (31) is provided with a first guide rod (33). The support plate (14) is connected to the first guide rod (33). The driving end of the first power element (32) is connected to the support plate (14). The first power element (32) is used to drive the support plate (14) to slide up and down along the first guide rod (33).

3. The friction testing machine according to claim 2, characterized in that: The height adjustment assembly (3) further includes a second adjustment seat (34), an adjustment screw (35), and a slider (36). The second adjustment seat (34) is provided with a second guide rod (37). The slider (36) is connected to the second guide rod (37). The adjustment screw (35) is connected to the slider (36). The adjustment screw (35) is used to drive the slider (36) to slide up and down along the second guide rod (37). The second adjustment seat (34) is installed on the mounting base (11), and the first adjustment seat (31) is installed on the slider (36).

4. The friction testing machine according to claim 1, characterized in that: It also includes a drawer box (46), the chassis (4) is provided with an opening (47) communicating with the second accommodating space (44), the drawer box (46) is installed in the second accommodating space (44), one side wall of the drawer box (46) is sealed to the opening (47), and the drawer box (46) can be moved out of the opening (47).

5. The friction testing machine according to claim 1, characterized in that: It also includes a bracket (5), which is installed in the first accommodating space (43). There are two test sample rotating devices (1). In the two test sample rotating devices (1), the rotating power element (15) of one test sample rotating device (1) is an electric grinding mechanism, and the rotating power element (15) of the other test sample rotating device (1) is an air grinding mechanism. The bracket (5) is provided with a crossbeam (51). The two test sample rotating devices (1) are arranged and installed on the crossbeam (51). The test sample rotating device (1) can move and adjust its position along the crossbeam (51).

6. The friction testing machine according to claim 1, characterized in that: The auxiliary testing component mounting device (2) includes a linear module (21) and a vise (22), wherein the vise (22) is connected to the moving end of the linear module (21).

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