A wear testing device

Abstract

This application provides a wear resistance testing device, including a base and a connecting part, a friction part, and a driving part connected to the base. The connecting part and the friction part are arranged sequentially in a first direction. The driving part is drively connected to the friction part and / or the connecting part. In use, the connecting part can be used to mount the test piece, and the friction part can contact the test piece. The driving part can drive the connecting part and the friction part to move relative to each other in a second direction, so that the friction part rubs against the test piece. The third direction is perpendicular to the first direction and the second direction. When performing a wear resistance test, the test piece is mounted on the connecting part, and then the driving part is activated. Under the driving action of the driving part, the friction part and the test piece move relative to each other, and the friction part rubs against the test piece, thereby completing the wear resistance test. The device has low testing cost, high testing efficiency, precise and controllable testing position, and reliable test results.

Description

Technical Field

[0001] This application relates to the field of abrasion resistance testing technology, specifically to an abrasion resistance testing device. Background Technology

[0002] Many parts require abrasion resistance testing before leaving the factory, such as automotive air deflectors. Automotive air deflectors play a crucial role in reducing wind resistance by guiding airflow and preventing it from directly impacting the front tires and being drawn into the wheel wells to create turbulence, thus reducing wind resistance. However, during long-term use, air deflectors frequently rub against curbs, leading to wear and damage. Therefore, abrasion resistance testing is necessary before they leave the factory.

[0003] In related technologies, the wear resistance of the air deflector is tested through real-vehicle testing, which involves a driver driving a test vehicle to find a suitable curb for testing. This testing method is costly in terms of manpower and vehicle cost; moreover, the test location is uncontrollable, relying entirely on the driver's experience, which places high demands on the driver's expertise and leads to unreliable test results; furthermore, the testing efficiency is low.

[0004] Therefore, how to achieve wear resistance testing of automotive air deflectors at a lower cost, with greater precision and control, and with higher efficiency and reliability is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a wear resistance testing device, which includes a base and a connecting part, a friction part, and a driving part connected to the base. The connecting part and the friction part are arranged sequentially in a first direction. The driving part is drivenly connected to the friction part and / or the connecting part. In use, the connecting part can be used to mount the test piece, the friction part can contact the test piece, and the driving part can drive the connecting part and the friction part to move relative to each other in a second direction so that the friction part rubs against the test piece. The first direction and the second direction are perpendicular to each other.

[0006] An optional embodiment of the wear resistance testing device: the friction part has an intersecting first plane and a second plane, the intersection of the first plane and the second plane forms a transition angle, the transition angle extends along a third direction, and in use, the transition angle can contact the test piece, wherein the third direction is perpendicular to the first direction and the second direction.

[0007] An optional embodiment of the wear resistance testing device: the connecting part includes a universal connecting part and a replaceable tooling, the universal connecting part is connected to the base, the replaceable tooling is detachably connected to the universal connecting part, and the replaceable tooling is provided with a connection point for the test piece.

[0008] An optional embodiment of the wear resistance testing device: the universal connecting part includes a main support and an adapter support, the main support is connected to the base through the adapter support, and the replaceable tooling is connected to the main support.

[0009] An optional embodiment of the wear resistance testing device: the main support and the adapter support are connected by a first adjustable structure, the first adjustable structure being able to adjust the position of the main support in the first direction relative to the adapter support.

[0010] An optional embodiment of the wear resistance testing device: the adapter bracket and the base are connected by a second adjustable structure, the second adjustable structure being able to adjust the position of the adapter bracket in the second direction relative to the base.

[0011] An optional embodiment of the wear resistance testing device: the main support is a planar frame perpendicular to the first direction, and the replaceable tooling includes two layers of connecting plates, which are respectively connected to opposite sides of the planar frame in the first direction.

[0012] An alternative embodiment of the wear resistance testing device: the base includes a three-dimensional frame body and a layer plate located inside the three-dimensional frame body, and the driving part and the friction part are connected to the layer plate.

[0013] An optional embodiment of the wear resistance testing device: The wear resistance testing device further includes a guide rail and a support that slides with the guide rail. The guide rail is connected to the layer plate, and the friction part is connected to the support. The support extends along a third direction. In the third direction, each end of the support corresponds to a guide rail. The driving part is positionally connected to the two ends of the support. The third direction is perpendicular to the first direction and the second direction.

[0014] An optional embodiment of the wear resistance testing device: The wear resistance testing device includes a controller, which is communicatively connected to the drive unit to control the drive unit to operate according to preset parameters.

[0015] The wear resistance testing device provided in this application can carry out wear resistance testing. During the test, the part to be tested (such as an automotive air deflector) is installed on the connecting part, and then the drive unit is started. Under the driving action of the drive unit, the friction part and the part to be tested move relative to each other. The friction part rubs against the part to be tested, thereby completing the wear resistance test. The test cost is low, the test efficiency is high, the test position is accurate and controllable, and the test results are reliable. Attached Figure Description

[0016] Figure 1 A perspective view of one embodiment of the wear resistance testing device provided in this application;

[0017] Figure 2 for Figure 1 A three-dimensional view of the middle section structure;

[0018] Figure 3 for Figure 1 Exploded three-dimensional view of the connecting part and the tested component;

[0019] Figure 4 for Figure 1 3D exploded view of the straight line module;

[0020] The annotations in the attached figures are explained as follows:

[0021] 100 Base, 101 Three-dimensional frame main body, 1011 Vertical beam, 1012 First upper beam, 1013 Second upper beam, 1014 First lower beam, 1015 Second lower beam, 102 Sheet, 103 Roller;

[0022] 200 Connecting part, 201 General connecting part, 2011 Main bracket, 2011a First side beam, 2011b Second side beam, 2011c Inner beam, 2012 Adapter bracket, 2012a Round hole, 2012b Long hole; 202 Replaceable tooling, 2021 Connecting plate, 2022 Connecting leg.

[0023] 300 Friction section, 301 First plane, 302 Second plane, 303 Transition edge;

[0024] 400 Drive unit, 401 Servo motor, 402 Coupling, 403 Slide, 404 Linear guide, 405 Lead screw, 406 Nut, 407 Housing, 408 Housing cover;

[0025] 500 guide rail;

[0026] 600 units;

[0027] 700 controller, 701 display screen;

[0028] 01. Car air deflector. Detailed Implementation

[0029] This application provides a wear resistance testing device. To enable those skilled in the art to better understand the technical solution of this application, the following description is provided in conjunction with the appendix. Figure 1-4 The present application will be further described in detail with reference to specific embodiments.

[0030] like Figure 1 As shown, the wear resistance testing device provided in this application includes a base 100, a connecting part 200, a friction part 300, and a driving part 400. The connecting part 200, the friction part 300, and the driving part 400 are all connected to the base 100, which facilitates the overall movement to the use position.

[0031] The connecting part 200 can be used to mount the part under test. Specifically, the part under test can be any component that needs to be tested for wear resistance, such as automotive parts, machine tool parts, etc. Automotive parts that need to be tested for wear resistance include, but are not limited to, automotive air deflectors, mudguards, etc. Automotive air deflectors are generally installed on the lower front side of the wheel arch, and mudguards are generally installed on the lower rear side of the wheel arch.

[0032] The friction part 300 can come into contact with the test piece mounted on the connecting part 200 in a first direction. Specifically, the first direction is parallel to or forms an acute angle with the normal direction of the contact surface between the friction part 300 and the test piece.

[0033] The driving unit 400 is driveably connected to the friction unit 300 and / or the connecting unit 200, and can drive the friction unit 300 and the connecting unit 200 to move relative to each other in a second direction, so that the friction unit 300 is rubbed against the test piece mounted on the connecting unit 200. That is, the driving unit 400 can be configured to be driveably connected only to the friction unit 300, thereby driving only the friction unit 300 to move; it can also be configured to be driveably connected only to the connecting unit 200, thereby driving only the connecting unit 200 to move; or it can be configured to be driveably connected to both the friction unit 300 and the connecting unit 200, thereby driving the friction unit 300 and the connecting unit 200 to move asynchronously. In the illustrated embodiment, the driving unit 400 only drives the friction unit 300 to move.

[0034] The wear resistance testing device provided in this application can carry out wear resistance testing. During the test, the test piece is installed on the connecting part 200, and then the driving part 400 is started. Under the driving action of the driving part 400, the friction part 300 and the test piece move relative to each other. The friction part 300 rubs against the test piece, thereby completing the wear resistance test. The test has low cost, high efficiency, precise and controllable test position, and reliable test results.

[0035] In some embodiments, such as Figure 2 As shown, the friction part 300 has a first plane 301, a second plane 302, and a transition angle 303. The first plane 301 and the second plane 302 intersect, and the intersection position forms the transition angle 303. The transition angle 303 can contact the workpiece being measured. The transition angle 303 extends along a third direction, and the third direction, as well as the aforementioned first and second directions, are perpendicular to each other. That is, the first direction is perpendicular to the second direction, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction.

[0036] For car windshields and mudguards, they most often rub against curb stones during actual use. The friction part 300 adopts the above shape to more realistically simulate the shape of curb stones, thereby more realistically reflecting the friction situation of car windshields and mudguards during actual use.

[0037] In some embodiments, the friction part 300 is made of stone, which is both wear-resistant and can simulate the material of a curb stone. Of course, the friction part 300 is not limited to stone, and the material of the friction part 300 can be flexibly selected according to the different test pieces. For example, the material of the part that most frequently rubs against the test piece during actual use can be selected.

[0038] In some embodiments, such as Figure 1 and Figure 3 As shown, the connecting part 200 includes a universal connecting part 201 and a replaceable tooling 202. The universal connecting part 201 is connected to the base 100, and the replaceable tooling 202 is detachably connected to the universal connecting part 201. The detachable connection method is not limited, such as threaded fastener connection, snap-fit ​​connection, etc. The replaceable tooling 202 is provided with a test piece connection point. In use, the test piece is installed on the replaceable tooling 202. With this design, if test pieces of different sizes and types need to be connected, only the replaceable tooling 202 needs to be replaced, without replacing the universal connecting part 201.

[0039] Specifically, the position and shape of the connection point of the test part can be designed according to the inherent fixing point of the test part itself. In this way, the test part can be connected to the test part connection point of the replaceable tooling 202 through its own inherent fixing point, without the need to set additional fixing points on the test part, so as not to damage the structure of the test part itself and to restore the actual installation state of the test part to the greatest extent.

[0040] In some embodiments, such as Figure 3 As shown, the universal connection part 201 includes a main support 2011 and a transition support 2012. The main support 2011 is connected to the base 100 through the transition support 2012, and the replaceable tooling 202 is connected to the main support 2011. In the illustrated embodiment, the main support 2011 is a planar frame perpendicular to the first direction, including two oppositely arranged first side beams 2011a and two oppositely arranged second side beams 2011b. The first side beams 2011a and second side beams 2011b are perpendicularly intersecting each other. Two inner beams 2011c are connected between the two second side beams 2011b, and the two inner beams 2011c are parallel to the first side beams 2011a. This structure of the main support 2011 has high structural strength, is relatively lightweight, and occupies relatively little layout space. In the illustrated embodiment, each of the two first side beams 2011a is connected to two transition supports 2012.

[0041] In some embodiments, the main support 2011 and the adapter support 2012 are connected by a first adjustable structure, which can adjust the position of the main support 2011 in the first direction relative to the adapter support 2012. This allows for position adjustment of the test piece in the first direction, so that test pieces of different sizes can contact the friction part 300 with appropriate force. For example, if the test piece is large in the first direction, the position of the connecting part 200 needs to be adjusted further away from the friction part to avoid excessive contact force between the test piece and the friction part 300; if the test piece is small in the first direction, the position of the connecting part 200 needs to be adjusted closer to the friction part to ensure contact between the test piece and the friction part 300. In the illustrated embodiments, as shown... Figure 3 As shown, the first adjustable structure includes an elongated hole 2012b extending along a first direction on the adapter bracket 2012. The adapter bracket 2012 is connected to the main bracket 2011 in an adjustable position in the first direction through the elongated hole 2012b. Alternatively, the adapter bracket 2012 can also be connected to the main bracket 2011 in an adjustable position in the first direction via a slide rail.

[0042] In some embodiments, the adapter bracket 2012 and the base 100 are connected by a second adjustable structure, which allows the position of the adapter bracket 2012 relative to the base 100 in the second direction to be adjusted. This design allows adjustment of the distance between the test piece and the friction part 300 in the second direction, ensuring that the friction distance between the friction part 300 and the test piece is sufficient to achieve the required friction distance for testing when the friction part 300 moves within a limited stroke. In the illustrated embodiment, as shown... Figure 3 As shown, the second adjustable structure includes a circular hole 2012a on the adapter bracket 2012 and a long slide rail (not shown) extending in the second direction on the base 100. Fasteners are connected to the circular hole 2012a and the long slide rail, allowing the adapter bracket 2012 to slide along the long slide rail after the fasteners are loosened. Alternatively, the adapter bracket 2012 can also be connected to the base 100 in an adjustable position in the second direction via the long hole.

[0043] In some embodiments, such as Figure 3 As shown, the replaceable tooling 202 includes two connecting plates 2021, which are respectively connected to opposite sides (upper and lower sides from the illustrated viewpoint) in the first direction of the planar frame, thus ensuring high connection reliability. More specifically, the replaceable tooling 202 also includes a connecting leg 2022, which is connected between the two connecting plates 2021 and extends below the lower connecting plate 2021. The workpiece under test is connected to the lower end of the connecting leg 2022. Figure 3 The tested component shown in the image is an automotive air deflector 01.

[0044] In some embodiments, the base 100 includes a three-dimensional frame body 101 and a shelf 102 located inside the three-dimensional frame body 101. A drive unit 400 and a friction unit 300 are mounted on the shelf 102. This results in a compact overall layout and small size. In the illustrated embodiment, the three-dimensional frame body 101 includes an upper planar frame, a lower planar frame, and multiple vertical beams 1011 connecting the upper and lower planar frames. The upper planar frame includes two opposing first upper beams 1012 and two opposing second upper beams 1013, which intersect perpendicularly. The lower planar frame includes two opposing first lower beams 1014 and two opposing second lower beams 1015, which intersect perpendicularly. The shelf 102 is connected between the vertical beams 1011 and is located between the upper and lower planar frames.

[0045] In some embodiments, the base 100 includes a roller 103, which is attached to the underside of the three-dimensional frame body 101. This facilitates the movement of the wear resistance testing device.

[0046] In some embodiments, the wear resistance testing device includes a guide rail 500 and a support 600 that slides with the guide rail 500. The guide rail 500 is connected to the shelf 102, and the friction part 300 is connected to the support 600. The support 600 can slide along the guide rail 500 under the driving action of the drive part 400, thereby driving the friction part 300 to slide along the guide rail 500. The guide rail 500 extends in a second direction. An appropriate amount of lubricant can be applied to the guide rail 500 to reduce wear between the guide rail 500 and the support 600. By connecting the friction part 300 to the support 600, it is not necessary to disconnect the drive part 400 from the support 600 when replacing the friction part 300, thus facilitating the replacement of the friction part 300.

[0047] In some embodiments, the support portion 600 extends along a third direction, and at each end of the support portion 600 corresponds to a guide rail 500. Thus, under the guidance of the guide rails 500, the two ends of the support portion 600 move at the same speed, preventing skewing. The drive portion 400 is preferably connected to the two ends of the support portion 600 at a central position between the two ends.

[0048] In some embodiments, the drive unit 400 employs a linear module. Specifically, such as... Figure 4As shown, the linear module includes a servo motor 401, a coupling 402, a slide 403, a linear guide rail 404, a lead screw 405, a nut 406, a housing 407, and a cover 408. The output shaft of the servo motor 401 is connected to the lead screw 405 via the coupling 402. The lead screw 405 rotates under the drive of the servo motor 401, and the nut 406, which is threadedly connected to the lead screw 405, moves along the length direction (i.e., the second direction) of the lead screw 405, causing the slide 403 to reciprocate along the linear guide rail 404. The slide 403 is connected to the support 600, causing the support 600 and the friction part 300 connected to the support 600 to reciprocate. The housing 407 and the cover 408 provide a relatively enclosed accommodating space for the lead screw 405 and the nut 406.

[0049] In some embodiments, the wear resistance testing device further includes a controller 700, which is communicatively connected to the drive unit 400. The controller 700 can set parameters such as friction speed, friction displacement, pause time, and number of cycles (one reciprocating movement is one cycle) through a preset program, so that the drive unit 400 runs according to the preset parameters under the control of the controller 700, thereby simulating the friction of the test piece under different working conditions.

[0050] In some embodiments, the controller 700 is configured with a display screen 701 to display the set parameter values.

[0051] In some embodiments, the controller 700 is connected to the base 100. Alternatively, the controller 700 can be located in a remote control room and communicate with the drive unit 400 via a wireless connection.

[0052] The above embodiments can be freely combined without conflict.

[0053] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0054] The above examples illustrate the principles and implementation methods of this application. The descriptions of the embodiments are merely for the purpose of helping to understand the methods and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A wear resistance testing device, characterized in that, The wear resistance testing device includes a base (100) and connected to the base (100): a connecting part (200), a friction part (300), and a driving part (400). The connecting part (200) and the friction part (300) are arranged sequentially in a first direction. The driving part (400) is connected to the friction part (300) and / or the connecting part (200) in a driving connection. In use, the connecting part (200) can be used to mount the test piece, the friction part (300) can contact the test piece, and the driving part (400) can drive the connecting part (200) and the friction part (300) to move relative to each other in a second direction so that the friction part (300) rubs the test piece. The first direction and the second direction are perpendicular to each other.

2. The wear resistance testing device according to claim 1, characterized in that, The friction part (300) has an intersecting first plane (301) and a second plane (302). The intersection of the first plane (301) and the second plane (302) forms a transition angle (303). The transition angle (303) extends along a third direction. In use, the transition angle (303) can contact the workpiece under test. The third direction is perpendicular to the first direction and the second direction.

3. The wear resistance testing device according to claim 1 or 2, characterized in that, The connecting part (200) includes a general connecting part (201) and a replaceable tooling (202). The general connecting part (201) is connected to the base (100), and the replaceable tooling (202) is detachably connected to the general connecting part (201). The replaceable tooling (202) is provided with a test piece connection point.

4. The wear resistance testing device according to claim 3, characterized in that, The universal connection part (201) includes a main support (2011) and an adapter support (2012). The main support (2011) is connected to the base (100) through the adapter support (2012). The replaceable tooling (202) is connected to the main support (2011).

5. The wear resistance testing device according to claim 4, characterized in that, The main support (2011) and the adapter support (2012) are connected by a first adjustable structure, which can adjust the position of the main support (2011) in the first direction relative to the adapter support (2012).

6. The wear resistance testing device according to claim 4 or 5, characterized in that, The adapter bracket (2012) and the base (100) are connected by a second adjustable structure, which can adjust the position of the adapter bracket (2012) in the second direction relative to the base (100).

7. The wear resistance testing apparatus according to any one of claims 4-6, characterized in that, The main support (2011) is a planar frame perpendicular to the first direction. The replaceable tooling (202) includes two connecting plates (2021). In the first direction, the two connecting plates (2021) are respectively connected to the opposite sides of the planar frame.

8. The wear resistance testing apparatus according to any one of claims 1-7, characterized in that, The base (100) includes a three-dimensional frame body (101) and a shelf (102) located inside the three-dimensional frame body (101), and the driving part (400) and the friction part (300) are connected to the shelf (102).

9. The wear resistance testing device according to claim 8, characterized in that, The wear resistance testing device further includes a guide rail (500) and a support (600) that slides with the guide rail (500). The guide rail (500) is connected to the layer plate (102), and the friction part (300) is connected to the support (600). The support (600) extends along a third direction. In the third direction, each end of the support (600) corresponds to a guide rail (500). The driving part (400) is connected to the position between the two ends of the support (600). The third direction is perpendicular to the first direction and the second direction.

10. The wear resistance testing apparatus according to any one of claims 1-9, characterized in that, The wear resistance testing device includes a controller (700), which is communicatively connected to the drive unit (400) to control the drive unit (400) to operate according to preset parameters.

Images