A wear resistance detection device for automobile parts and variable control method thereof

Abstract

The present invention discloses a wear resistance detection device for automobile parts and a variable control method thereof, comprising a grinding table, a top surface of the grinding table having an embedded hole near the center, a movable plate hinged on the top surface of the grinding table, a friction plate fixed to the inner wall of the embedded hole, a load-bearing platform arranged on one side of the grinding table, a slideway arranged on the side of the load-bearing platform close to the grinding table, a limit plate installed inside the slideway, a fixed cavity and a movable cavity respectively arranged on both sides of the limit plate, a spreading motor fixed inside the fixed cavity, a movable hole opened at the center of the movable plate close to one side of the grinding table, a roller installed inside the movable hole, and the output ends of the distance sensor and the pressure sensor connected to the same single-chip computer through wires. Through the coordinated use of the above devices, the range of parts that can be detected by the wear resistance detection device can be improved, and the friction coefficient and load can be changed more conveniently, the amount of data obtained can be increased, and the accuracy of load measurement can be improved.

Description

Technical Field

[0001] The invention relates to the technical field related to automobile parts wear resistance detection equipment, and in particular to an automobile parts wear resistance detection device and a variable control method thereof. Background Art

[0002] After automobile parts are produced in batches, they need to be sampled for wear resistance testing. The existing testing equipment has a single testing object and can only perform fixed transfer on automobile parts of individual sizes. In addition, the existing testing devices cannot quickly adjust variables when testing parts, such as the load and friction coefficient of parts. In addition, the existing devices are not accurate enough in measuring the load of parts. The error mainly comes from the influence of the gravity of automobile parts, so it will cause large errors in the final results of the wear resistance test of automobile parts, which will affect the overall progress of automobile parts production. Summary of the invention

[0003] The purpose of the present invention is to provide an automobile parts wear resistance detection device and a variable control method thereof, so as to solve the problems proposed in the above background technology that the detection range of the existing automobile parts wear resistance detection device is too single, the variables cannot be adjusted quickly, and there are certain errors when measuring the load of automobile parts.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A wear resistance detection device for automobile parts comprises a grinding table, wherein a half-cylindrical embedding hole is provided near the center of the top surface of the grinding table, a movable plate is hinged near the embedding hole on the top surface of the grinding table, a plurality of friction plates are fixed to the inner wall of the embedding hole through a plurality of slots, a load-bearing platform is arranged on one side of the grinding table, a slideway is provided on the side of the load-bearing platform close to the grinding table, a limit plate is installed inside the slideway, a fixed cavity is integrally provided on the side of the limit plate close to the grinding table, a spreading motor is fixed inside the fixed cavity, a movable cavity is fixed on the side of the fixed cavity away from the limit plate, a distance sensor is provided on the side of the grinding table away from the load-bearing platform, a movable hole is provided at the center of the side of the movable plate close to the grinding table, a roller is installed inside the movable hole through a fixing frame, a pressure sensor is fixed on the inner wall of the movable hole away from the opening end, the output ends of the distance sensor and the pressure sensor are connected to the same single-chip microcomputer through wires, and the output end of the single-chip microcomputer is connected to the power input end of the spreading motor through wires.

[0006] In a further embodiment, the movable plate is an arc-shaped structure, a telescopic hole is opened inside the movable plate, a telescopic block is installed inside the telescopic hole, the movable hole is opened inside the telescopic block, a telescopic motor is fixed to the inner wall of the telescopic hole away from the opening end, and two telescopic plates are symmetrically arranged at the top of the telescopic block along its diameter direction.

[0007] In a further embodiment, racks are provided on the opposite sides of the two telescopic plates, and a first screw rod is fixed to the power output shaft of the telescopic motor. The first screw rod extends between the two telescopic plates and meshes with the two telescopic plates.

[0008] In a further embodiment, a plurality of expansion grooves are equidistantly provided in an annular shape on the outer wall of the movable cavity, a plurality of engaging plates are installed inside the movable cavity, a movable rod is hingedly connected to the center of one side of the inner wall of the movable cavity near the engaging plate, one end of the movable rod away from the engaging plate extends to the outside of the movable cavity and is hingedly connected to a movable block, and a second screw rod is fixed to the power output shaft of the expansion motor, which extends into the interior of the movable cavity and engages with the engaging plate.

[0009] In a further embodiment, two compression springs are symmetrically fixed on both sides away from one end of the movable rod and the movable block, and one end of the two compression springs away from the movable rod is fixed to the side of the movable block, and the number of the engaging plates is equal to the number of the telescopic slots.

[0010] In a further embodiment, the output end of the distance sensor is flush with the top surface of the friction plate, and the friction plate is provided with multiple groups classified by friction coefficient, so as to reduce the measurement error and obtain the information of automobile parts entering the embedded hole at the first time. At the same time, the friction plate is provided with multiple groups, and the friction coefficient can be changed by replacing the friction plate.

[0011] In a further embodiment, the roller is arranged along the direction of the central axis of the embedding hole, and a reset spring is installed between the fixing frame at the top end of the roller and the pressure sensor.

[0012] In a further embodiment, a lifting motor is fixed at the top of the slide, a ring is fixed on one side of the limit plate, the power output shaft of the lifting motor is engaged with the ring through a third screw rod, and the power input end of the lifting motor is connected to the output end of the single-chip microcomputer through a wire.

[0013] Preferably, the detection variable control method based on the above-mentioned automobile parts wear resistance detection device specifically includes the following steps:

[0014] T1. Install the friction plate on the inner wall of the embedded hole through the slot, then sleeve the automobile part to be tested on the outer wall of the movable cavity, and then close the power supply of the expansion motor. The expansion motor drives the meshing plate to slide inside the movable cavity through the second screw rod, and the meshing plate drives the movable rod to deflect inside the telescopic slot. Initially, one side of the movable block fits with the inner wall of the automobile part. As the movable rod deflects, the side of the movable block away from the movable rod gradually fits with the inner wall of the automobile part, and at this time, the compression spring further applies force;

[0015] T2, then close the power supply of the lifting motor, and the lifting motor meshes with the ring through the third screw rod, so that the limit plate drives the fixed cavity and the movable cavity to fall in the vertical direction. With the operation of the lifting motor, the automobile parts fixed by the movable cavity gradually approach the inside of the embedded hole. When the value of the distance sensor changes, that is, the end of the automobile part blocks the laser emitted by the distance sensor, the single-chip microcomputer immediately controls the opening motor to reset, and then deflects the movable plate to fix the automobile part inside the embedded hole. Then the staff pushes the load-bearing table away from the polishing table. At this point, the automobile part is completely separated from the movable cavity;

[0016] T3. The friction plate can be replaced according to the experimental needs to change the friction coefficient, and then the external auxiliary motor is used to drive the automobile parts to rotate. When the load on the automobile parts needs to be changed, the power of the telescopic motor is closed, and the telescopic motor drives the telescopic block to descend inside the telescopic hole through the telescopic plate. At this time, the roller fits the outer wall of the automobile parts more closely, and the reset spring is compressed and generates pressure on the pressure sensor;

[0017] T4. At this time, the friction coefficient of the automobile parts testing environment is the friction coefficient of the friction plate, and the load it bears is the value measured by the pressure sensor plus the weight between the roller and the fixed frame, plus the original weight of the automobile parts. In the later measurement, the wear resistance parameters of the automobile parts can be obtained by weighing the polished automobile parts.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, the movable block can be deflected on the outer wall of the movable cavity by the extension and retraction of the movable rod inside the movable cavity, thereby realizing the fixation of automobile parts of various sizes. The load of the automobile parts during rotation can be increased and decreased by the extension and retraction of the telescopic block inside the telescopic hole. The load on the parts can be accurately obtained by comparing the value measured by the pressure sensor with the original mass value of the automobile parts. The friction coefficient can be changed when the wear of the parts is detected by replacing the friction plate, so that more data can be obtained in the wear resistance detection of the parts, making the final result more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a grinding table according to an embodiment of the present invention;

[0021] Figure 2 It is a front cross-sectional view of a movable plate according to an embodiment of the present invention;

[0022] Figure 3 It is a front cross-sectional view of the load-bearing platform according to an embodiment of the present invention;

[0023] Figure 4 For the embodiment of the present invention Figure 2 A magnified view of the structure at center;

[0024] Figure 5 For the embodiment of the present invention Figure 3 Enlarged view of the structure at point B in the middle.

[0025] In the figure: 1. grinding table; 2. embedded hole; 3. movable plate; 31. telescopic hole; 32. telescopic block; 33. telescopic motor; 34. telescopic plate; 35. first screw; 4. friction plate; 5. load-bearing platform; 6. slideway; 7. limit plate; 8. fixed cavity; 9. opening motor; 10. movable cavity; 11. distance sensor; 12. movable hole; 13. roller; 14. pressure sensor; 16. telescopic slot; 17. meshing plate; 18. movable rod; 181. compression spring; 19. movable block; 20. second screw; 21. reset spring; 22. lifting motor; 23. collar; 24. third screw. DETAILED DESCRIPTION

[0026] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0027] Example 1

[0028] See also Figure 1-5The present embodiment provides an automobile parts wear resistance detection device and a variable control method thereof, comprising a grinding table 1, a half-cylindrical structure embedding hole 2 is provided near the center of the top surface of the grinding table 1, a movable plate 3 is hinged near the embedding hole 2 on the top surface of the grinding table 1, a plurality of friction plates 4 are fixed to the inner wall of the embedding hole 2 through a plurality of slots, a load-bearing platform 5 is arranged on one side of the grinding table 1, a slideway 6 is provided on the side of the load-bearing platform 5 close to the grinding table 1, a limit plate 7 is installed inside the slideway 6, a fixed cavity 8 is integrally provided on the side of the limit plate 7 close to the grinding table 1, and the fixed cavity 8 A spreading motor 9 is fixed inside, a movable cavity 10 is fixed on the side of the fixed cavity 8 away from the limit plate 7, a distance sensor 11 is provided on the side of the grinding table 1 away from the load-bearing platform 5, a movable hole 12 is opened at the center of the movable plate 3 close to the grinding table 1, a roller 13 is installed inside the movable hole 12 through a fixed frame, a pressure sensor 14 is fixed on the inner wall of the movable hole 12 away from the opening end, the output ends of the distance sensor 11 and the pressure sensor 14 are connected to the same single-chip microcomputer through wires, and the output end of the single-chip microcomputer is connected to the power input end of the spreading motor 9 through wires.

[0029] The movable plate 3 is an arc-shaped structure, with a telescopic hole 31 provided inside the movable plate 3, a telescopic block 32 installed inside the telescopic hole 31, the movable hole 12 is provided inside the telescopic block 32, a telescopic motor 33 is fixed to the inner wall of the telescopic hole 31 away from the opening end, and two telescopic plates 34 are symmetrically arranged at the top of the telescopic block 32 along its diameter direction.

[0030] Racks are provided on the sides facing the two telescopic plates 34 . A first screw rod 35 is fixed to the power output shaft of the telescopic motor 33 . The first screw rod 35 extends between the two telescopic plates 34 and meshes with the two telescopic plates 34 .

[0031] The outer wall of the movable chamber 10 is provided with a plurality of expansion grooves 16 at equal intervals in a circular shape, and a plurality of engaging plates 17 are installed inside the movable chamber 10. A movable rod 18 is hingedly connected to the engaging plate 17 at the center of one side of the inner wall of the movable chamber 10. One end of the movable rod 18 away from the engaging plate 17 extends to the outside of the movable chamber 10 and is hingedly connected to a movable block 19. A second screw 20 that extends into the interior of the movable chamber 10 and engages with the engaging plate 17 is fixed to the power output shaft of the open motor 9.

[0032] Two compression springs 181 are symmetrically fixed on both sides away from one end of the movable rod 18 and the movable block 19. The end of the two compression springs 181 away from the movable rod 18 is fixed to the side of the movable block 19. The number of the engaging plates 17 is equal to the number of the telescopic slots 16.

[0033] The output end of the distance sensor 11 is flush with the top surface of the friction plate 4. The friction plate 4 is provided with multiple groups classified by friction coefficient, which reduces the measurement error and can obtain the information of the automobile parts entering the embedded hole 2 at the first time. At the same time, the friction plate 4 is provided with multiple groups, and the friction coefficient can be changed by replacing the friction plate 4.

[0034] The roller 13 is arranged along the direction of the central axis of the embedding hole 2 , and a return spring 21 is installed between the fixing frame at the top of the roller 13 and the pressure sensor 14 .

[0035] A lifting motor 22 is fixed at the top of the slide 6, a collar 23 is fixed on one side of the limit plate 7, the power output shaft of the lifting motor 22 is meshed with the collar 23 through a third screw rod 24, and the power input end of the lifting motor 22 is connected to the output end of the single-chip microcomputer through a wire.

[0036] In this embodiment, the friction plate 4 is installed on the inner wall of the embedding hole 2 through the slot, and then the automobile part to be tested is sleeved on the outer wall of the movable cavity 10, and then the power supply of the expansion motor 9 is closed, and the expansion motor 9 drives the meshing plate 17 to slide inside the movable cavity 10 through the second screw 20, and the meshing plate 17 drives the movable rod 18 to deflect inside the telescopic groove 16. Initially, one side of the movable block 19 is in contact with the inner wall of the automobile part. As the movable rod 18 deflects, the side of the movable block 19 away from the movable rod 18 gradually fits with the inner wall of the automobile part. At this time, the compression spring 181 further applies force.

[0037] After that, the power supply of the lifting motor 22 is closed. The lifting motor 22 engages with the ring 23 through the third screw rod 24, so that the limit plate 7 drives the fixed cavity 8 and the movable cavity 10 to fall in the vertical direction. With the operation of the lifting motor 22, the automobile parts fixed by the movable cavity 10 gradually approach the inside of the embedding hole 2. When the value of the distance sensor 11 changes, that is, the end of the automobile part blocks the laser emitted by the distance sensor 11, the single-chip microcomputer immediately controls the opening motor 9 to reset, and then deflects the movable plate 3 to fix the automobile part inside the embedding hole 2. Then the staff pushes the load-bearing platform 5 away from the polishing table 1. At this point, the automobile part is completely separated from the movable cavity 10.

[0038] The friction plate 4 can be replaced according to experimental needs to change the friction coefficient, and then the external auxiliary motor is used to drive the automobile parts to rotate. When the load on the automobile parts needs to be changed, the power supply of the telescopic motor 33 is closed, and the telescopic motor 33 drives the telescopic block 32 to descend inside the telescopic hole 31 through the telescopic plate 34. At this time, the roller 13 fits more closely with the outer wall of the automobile part, and the reset spring 21 is compressed and generates pressure on the pressure sensor 14.

[0039] At this time, the friction coefficient of the automobile parts testing environment is the friction coefficient of the friction plate 4, and the load it bears is the value measured by the pressure sensor 14 plus the weight between the roller 13 and the fixed frame, plus the original weight of the automobile parts. In later measurements, the wear-resistant parameters of the automobile parts can be obtained by weighing the polished automobile parts.

[0040] By using the above devices in combination, the range of parts that can be detected by the wear-resistant detection device can be improved, and the friction coefficient and load can be changed more conveniently, which can increase the amount of data obtained and improve the accuracy of load measurement.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear resistance testing device for automobile parts, comprising a grinding table (1), characterized in that: A half-cylindrical embedding hole (2) is provided near the center of the top surface of the grinding table (1); a movable plate (3) is hingedly connected to the top surface of the grinding table (1) near the embedding hole (2); a plurality of friction plates (4) are fixed to the inner wall of the embedding hole (2) via a plurality of slots; a load-bearing platform (5) is arranged on one side of the grinding table (1); a slideway (6) is provided on the side of the load-bearing platform (5) near the grinding table (1); a limit plate (7) is installed inside the slideway (6); a fixed cavity (8) is integrally provided on the side of the limit plate (7) near the grinding table (1); a spreading motor (9) is fixed inside the fixed cavity (8); A movable cavity (10) is fixed on the side of the fixed cavity (8) away from the limit plate (7); a distance sensor (11) is provided on the side of the grinding table (1) away from the load-bearing platform (5); a movable hole (12) is provided at the center of the movable plate (3) close to the grinding table (1); a roller (13) is installed inside the movable hole (12) through a fixing frame; a pressure sensor (14) is fixed on the inner wall of the movable hole (12) away from the opening end; the output ends of the distance sensor (11) and the pressure sensor (14) are connected to the same single-chip microcomputer through wires; and the output end of the single-chip microcomputer is connected to the power input end of the expansion motor (9) through wires.

2. The wear resistance detection device for automobile parts according to claim 1, characterized in that: The movable plate (3) is of an arc-shaped structure, a telescopic hole (31) is provided inside the movable plate (3), a telescopic block (32) is installed inside the telescopic hole (31), the movable hole (12) is provided inside the telescopic block (32), a telescopic motor (33) is fixed to the inner wall of the telescopic hole (31) away from the opening end, and two telescopic plates (34) are symmetrically provided at the top end of the telescopic block (32) along the diameter direction thereof.

3. The wear resistance detection device for automobile parts according to claim 2, characterized in that: A rack is provided on the side surfaces facing the two telescopic plates (34); a first screw rod (35) is fixed to the power output shaft of the telescopic motor (33); the first screw rod (35) extends between the two telescopic plates (34) and meshes with the two telescopic plates (34).

4. The wear resistance detection device for automobile parts according to claim 3 is characterized in that: The outer wall of the movable chamber (10) is provided with a plurality of telescopic grooves (16) at equal intervals in an annular shape. A plurality of meshing plates (17) are installed inside the movable chamber (10). A movable rod (18) is hingedly connected to the meshing plate (17) at the center of one side of the inner wall of the movable chamber (10). One end of the movable rod (18) away from the meshing plate (17) extends to the outside of the movable chamber (10) and is hingedly connected to a movable block (19). A second screw rod (20) is fixed to the power output shaft of the expansion motor (9) and extends into the movable chamber (10) and meshes with the meshing plate (17).

5. The wear resistance detection device for automobile parts according to claim 4, characterized in that: Two compression springs (181) are symmetrically fixed on two sides away from one end of the movable rod (18) and the movable block (19), and one end of the two compression springs (181) away from the movable rod (18) is fixed to the side of the movable block (19). The number of the engaging plates (17) is equal to the number of the telescopic slots (16).

6. The wear resistance detection device for automobile parts according to claim 5, characterized in that: The output end of the distance sensor (11) is flush with the top surface of the friction plate (4), and the friction plate (4) is provided with a plurality of groups classified by friction coefficient.

7. The wear resistance detection device for automobile parts according to claim 6, characterized in that: The roller (13) is arranged along the direction of the central axis of the embedding hole (2), and a return spring (21) is installed between the fixing frame at the top of the roller (13) and the pressure sensor (14).

8. The wear resistance detection device for automobile parts according to claim 7, characterized in that: A lifting motor (22) is fixed to the top of the slideway (6), a collar (23) is fixed to one side of the limit plate (7), a power output shaft of the lifting motor (22) is meshed with the collar (23) via a third screw rod (24), and a power input end of the lifting motor (22) is connected to an output end of the single-chip microcomputer via a wire.

9. A detection variable control method using the wear resistance detection device for automobile parts according to claim 8, characterized in that: The steps include: T1. Install the friction plate (4) on the inner wall of the embedded hole (2) through the slot, then sleeve the automobile part to be tested on the outer wall of the movable cavity (10), and then close the power supply of the expansion motor (9). The expansion motor (9) drives the meshing plate (17) to slide inside the movable cavity (10) through the second screw rod (20). The meshing plate (17) drives the movable rod (18) to deflect inside the telescopic groove (16). Initially, one side of the movable block (19) is in contact with the inner wall of the automobile part. As the movable rod (18) deflects, the side of the movable block (19) away from the movable rod (18) gradually contacts the inner wall of the automobile part. At this time, the compression spring (181) further applies force. T2, then the power supply of the lifting motor (22) is closed, and the lifting motor (22) meshes with the third screw rod (24) and the collar (23), so that the limit plate (7) drives the fixed cavity (8) and the movable cavity (10) to fall in the vertical direction. As the lifting motor (22) runs, the automobile component fixed by the movable cavity (10) gradually approaches the inside of the embedded hole (2). When the value of the distance sensor (11) changes, that is, the end of the automobile component blocks the laser emitted by the distance sensor (11), the single-chip microcomputer immediately controls the opening motor (9) to reset, and then deflects the movable plate (3) to fix the automobile component in the inside of the embedded hole (2). Then the staff pushes the load-bearing platform (5) away from the polishing table (1). At this point, the automobile component is completely separated from the movable cavity (10); T3. Replace the friction plate (4) according to the experimental needs to change the friction coefficient, and then use the external auxiliary motor to drive the automobile parts to rotate. When the load on the automobile parts needs to be changed, close the power supply of the telescopic motor (33), and the telescopic motor (33) drives the telescopic block (32) to descend inside the telescopic hole (31) through the telescopic plate (34). At this time, the roller (13) and the outer wall of the automobile parts are more closely fitted, and the return spring (21) is compressed and generates pressure on the pressure sensor (14); T4. At this time, the friction coefficient of the automobile parts testing environment is the friction coefficient of the friction plate (4), and the load it bears is the value measured by the pressure sensor (14) plus the weight between the roller (13) and the fixing frame, plus the original weight of the automobile parts. In the later measurement, the automobile parts after grinding are weighed to obtain the wear resistance parameters of the automobile parts.

Images