A heat treatment device and heat treatment method for automobile bearing working surface

Abstract

The present invention relates to the field of automobile bearings, and provides an automobile bearing working surface heat treatment device and heat treatment method, comprising a heating device, a cooling device, a tempering device, and a cleaning and detection device connected in sequence, wherein a heating component is connected in the heating device, a cooling component is connected in the cooling device, a tempering component is connected in the tempering device, and a multifunctional cavity is provided in the cleaning and detection device, wherein a cleaning component and a detection component are connected in the multifunctional cavity. The present invention can deeply clean automobile bearings after heat treatment and tempering through a device, effectively remove residues on automobile bearings, and can also perform hardness detection on automobile bearings after cleaning at the same time, automatically and quickly screen out automobile bearings of qualified quality, and improve the heat treatment efficiency of automobile bearings.

Description

Technical Field

[0001] The invention relates to the technical field of automobile bearings, and in particular to a heat treatment device and a heat treatment method for a working surface of an automobile bearing. Background Art

[0002] Automobile bearings are very important parts in automobiles. They support the rotation of wheels, reduce friction, and improve the driving efficiency and stability of automobiles. Automobile bearings need to go through multiple steps in production. Heat treatment of the working surface of automobile bearings is one of the important steps. Heat treatment includes heating, quenching, tempering, cleaning and testing. However, the current cleaning and testing often need to be completed in two separate steps with the help of two devices, which reduces production efficiency. Summary of the invention

[0003] In view of the above technical problems, the present invention aims to provide a heat treatment device and a heat treatment method for the working surface of an automobile bearing. To solve the above technical problems, the present invention adopts the following technical solutions:

[0004] A heat treatment device for the working surface of an automobile bearing comprises a heating device, a cooling device, a tempering device and a cleaning and testing device which are connected in sequence. The heating device is connected with a heating component, the cooling device is connected with a cooling component, the tempering device is connected with a tempering component, and the cleaning and testing device is provided with a multifunctional cavity, and the multifunctional cavity is connected with a cleaning component and a testing component.

[0005] Further, the cleaning assembly includes a first cylinder, a slide plate, a first rack, a second rack, a permanent magnet plate and a clamping and rotating assembly, the first cylinder is fixedly connected to the bottom wall of the multifunctional cavity, the slide plate is slidably connected to the side wall of the multifunctional cavity, the slide plate is fixedly connected to the piston rod of the first cylinder, and the first rack, the second rack and the permanent magnet plate are all fixedly connected to the top wall of the slide plate;

[0006] The clamping rotating assembly comprises a first net box, a first rotating shaft, a first connecting seat, a first gear, a second net box, a second rotating shaft, a second connecting seat and a transmission.

[0007] The first net box and the first gear are both fixed to the first rotating shaft, the first net box is provided with a first box slot, the first rotating shaft is rotatably connected to the first connecting seat, the first connecting seat and the second connecting seat are both fixed to the rear wall of the multi-functional cavity, the second net box is provided with a second box slot, the second net box is fixed to the second rotating shaft, the second rotating shaft and the transmission are both rotatably connected to the second connecting seat, the transmission is provided with a connecting channel, the second rotating shaft is slidably connected to the inner wall of the connecting channel, the inner wall of the connecting channel is provided with a transmission groove, a connecting plate and a permanent magnet block are fixed to the second rotating shaft, the connecting plate is connected to the side wall of the transmission groove through a first elastic member, the connecting plate is slidably connected to the inner wall of the transmission groove, and the second gear is fixed to the transmission.

[0008] Furthermore, a limit groove is provided on the second rotating shaft, a friction layer is fixedly connected to the second rotating shaft, and the detection assembly includes a second cylinder, a hardness tester, a measuring needle, an adjustment plate, a limit plate, a limit strip, a second elastic member and a protrusion.

[0009] The second cylinder is fixedly connected to the top wall of the multifunctional chamber, the hardness tester is slidably connected to the rear wall of the multifunctional chamber, the hardness tester is fixedly connected to the lower end of the piston rod on the second cylinder, the measuring needle, the adjustment plate and the limit plate are all fixedly connected to the bottom wall of the hardness tester, the rear wall of the adjustment plate is detachably connected with an elastic friction plate, the protrusion is fixedly connected to the limit plate, the limit bar is slidably connected to the limit plate, and the limit bar is connected to the protrusion through the second elastic member.

[0010] Furthermore, the first box slot is connected to the top wall and the left side wall of the first net box, and the second box slot is connected to the top wall and the right side wall of the second net box.

[0011] Furthermore, the cleaning and testing device is connected to a processing module, and the hardness tester is connected to a wireless module.

[0012] Furthermore, a door body is movably connected to the cleaning and detecting device.

[0013] Furthermore, the door body is made of transparent glass.

[0014] Furthermore, the elastic friction plate is a silicone plate.

[0015] Furthermore, the elastic friction plate is a sponge plate.

[0016] A method for heat treatment of a working surface of an automobile bearing comprises the following steps:

[0017] Step 1: Put the automobile bearing into the heating device. The heating component in the heating device heats the heating device. After heating to the preset quenching temperature, the automobile bearing is kept at the preset quenching temperature for a period of time to ensure that the temperature inside the automobile bearing is uniform and the structure transformation is complete.

[0018] Step 2: Place the automobile bearing into the cooling device, and the cooling assembly in the cooling device quickly cools the automobile bearing;

[0019] Step 3: Put the automobile bearing into the tempering device. The tempering component in the tempering device tempers the quenched automobile bearing to reduce the quenching stress and improve the toughness and stability of the automobile bearing.

[0020] Step 4: Place the automobile bearing into the multifunctional cavity of the cleaning and testing device. The cleaning component in the multifunctional cavity cleans the automobile bearing to remove residues on the automobile bearing, and the testing component performs quality testing on the automobile bearing.

[0021] The present invention has the following beneficial effects:

[0022] The present invention can use a device to deeply clean automobile bearings after heat treatment and tempering, effectively remove residues on the automobile bearings, and can simultaneously perform hardness testing on the cleaned automobile bearings, automatically and quickly screen out automobile bearings of qualified quality, and improve the heat treatment efficiency of automobile bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0024] Figure 1 It is a structural schematic diagram of a heat treatment device for a working surface of an automobile bearing according to the present invention;

[0025] Figure 2 The present invention Figure 1 A schematic diagram of the structure of the cleaning and testing device;

[0026] Figure 3 The present invention Figure 2 A schematic diagram of the structure of the first rotating shaft, the first connecting seat and the first gear;

[0027] Figure 4 The present invention Figure 2 The enlarged view of point A in the middle;

[0028] Figure 5 The present invention Figure 4 A schematic diagram of the structure of the second rotating shaft and the permanent magnet block in the middle;

[0029] Figure 6 The present invention Figure 2 The enlarged view of point B in the middle;

[0030] Figure 7 The present invention Figure 6 Schematic diagram of the structure of the center adjustment plate and the elastic friction plate.

[0031] Figure numerals: 1, heating device; 2, cooling device; 3, tempering device; 4, cleaning and testing device; 5, multifunctional chamber; 6, first cylinder; 7, slide plate; 8, first rack; 9, second rack; 10, permanent magnet plate; 11, first net box; 12, first box slot; 13, first rotating shaft; 14, first connecting seat; 15, first gear; 16, second net box; 17, second box slot; 18, second rotating shaft; 19, second Connecting seat; 20, transmission; 21, second gear; 22, connecting channel; 23, transmission groove; 24, connecting plate; 25, first elastic member; 26, permanent magnet block; 27, limit groove; 28, friction layer; 29, second cylinder; 30, hardness tester; 31, measuring needle; 32, adjustment plate; 33, limit plate; 34, limit strip; 35, second elastic member; 36, raised portion; 37, door body; 38, elastic friction plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] like Figure 1-Figure 2As shown, a heat treatment device for the working surface of an automobile bearing comprises a heating device 1, a cooling device 2, a tempering device 3 and a cleaning and testing device 4 which are connected in sequence. The heating device 1 is connected with a heating component, the cooling device 2 is connected with a cooling component, the tempering device 3 is connected with a tempering component, a multifunctional cavity 5 is provided in the cleaning and testing device 4, and a cleaning component and a testing component are connected in the multifunctional cavity 5. The cleaning component and the testing component are arranged in the same device, so that the integration of cleaning and testing can be realized, and there is no need to separate two devices and two steps, thereby saving processes and improving production efficiency.

[0036] like Figure 2-Figure 5 As shown, according to an optional embodiment of the present invention, the cleaning assembly includes a first cylinder 6, a slide plate 7, a first rack 8, a second rack 9, a permanent magnet plate 10 and a clamping and rotating assembly, the first cylinder 6 is fixedly connected to the bottom wall of the multifunctional cavity 5, the slide plate 7 is slidably connected to the side wall of the multifunctional cavity 5, the slide plate 7 is fixedly connected to the piston rod of the first cylinder 6, and the first rack 8, the second rack 9 and the permanent magnet plate 10 are all fixedly connected to the top wall of the slide plate 7;

[0037] The clamping rotating assembly includes a first net box 11, a first rotating shaft 13, a first connecting seat 14, a first gear 15, a second net box 16, a second rotating shaft 18, a second connecting seat 19 and a transmission 20. The first net box 11 and the first gear 15 are both fixedly connected to the first rotating shaft 13. When the second rack 9 moves up, it can mesh with the first gear 15 for linkage. The first net box 11 is provided with a first box slot 12. The first rotating shaft 13 is rotatably connected to the first connecting seat 14. The first connecting seat 14 and the second connecting seat 19 are both fixedly connected to the rear wall of the multifunctional cavity 5. The second net box 16 is provided with a second box slot 17. The second net box 16 is fixedly connected to the second rotating shaft 18. The first net box 11 and the second net box 16 can both be made of stainless steel. The second rotating shaft 18 and the transmission device 20 are both rotatably connected to the second connecting seat 19. A connecting channel 22 is provided on the transmission device 20. The second rotating shaft 18 is slidably connected to the inner wall of the connecting channel 22. A transmission groove 23 is provided on the inner wall of the connecting channel 22. A connecting piece 24 and a permanent magnet block 26 are fixedly connected to the second rotating shaft 18. The connecting piece 24 is connected to the side wall of the transmission groove 23 through a first elastic member 25. The connecting piece 24 is slidably connected to the inner wall of the transmission groove 23. A second gear 21 is fixedly connected to the transmission device 20. After the first rack 8 moves up, it can mesh with the second gear 21 for transmission. The multi-functional cavity 5 is filled with cleaning liquid. The automobile bearing is clamped in the first tank 12 and the second tank 17 for rotational cleaning.

[0038] like Figure 2 , 4, 5, 6, and 7, according to an optional embodiment of the present invention, a limiting groove 27 is provided on the second rotating shaft 18, a friction layer 28 is fixedly connected to the second rotating shaft 18, the detection assembly includes a second cylinder 29, a hardness tester 30, a measuring needle 31, an adjustment plate 32, a limiting plate 33, a limiting strip 34, a second elastic member 35 and a protrusion 36, the second cylinder 29 is fixedly connected to the top wall of the multifunctional cavity 5, and the hardness tester 30 is slidably connected to the rear wall of the multifunctional cavity 5. The hardness tester 30 is fixedly connected to the lower end of the piston rod on the second cylinder 29, and the measuring needle 31, the adjustment plate 32 and the limit plate 33 are all fixedly connected to the bottom wall of the hardness tester 30. The rear wall of the adjustment plate 32 is detachably connected with an elastic friction plate 38, the protrusion 36 is fixedly connected to the limit plate 33, and the limit bar 34 is slidably connected to the limit plate 33. The limit bar 34 is connected to the protrusion 36 through the second elastic member 35. The working principle of the hardness tester 30 and the measuring needle 31 is realized with reference to the existing Rockwell hardness tester.

[0039] like Figure 2 As shown, according to an optional embodiment of the present invention, the first box slot 12 is connected to the top wall and the left side wall of the first net box 11, and the second box slot 17 is connected to the top wall and the right side wall of the second net box 16.

[0040] like Figure 2 As shown, according to an optional embodiment of the present invention, a processing module is connected to the cleaning and testing device 4, and the processing module can be a single-chip microcomputer with component control function and data analysis function. The hardness tester 30 is connected to a wireless module, and the wireless module can wirelessly transmit the detection data obtained by the hardness tester 30 to an external terminal device for user viewing.

[0041] like Figure 2 As shown, according to an optional embodiment of the present invention, a door body 37 is movably connected to the cleaning and testing device 4, and the door body 37 is convenient for users to put and take the automobile bearings.

[0042] like Figure 2 As shown, according to an optional embodiment of the present invention, the door body 37 is made of transparent glass, which makes it convenient for the user to observe the situation inside the cleaning and detection device 4.

[0043] like Figure 7 As shown, according to an optional embodiment of the present invention, the elastic friction plate 38 is a silicone plate.

[0044] like Figure 7 As shown, according to an optional embodiment of the present invention, the elastic friction plate 38 is a sponge plate.

[0045] A method for heat treatment of a working surface of an automobile bearing comprises the following steps:

[0046] Step 1: Put the automobile bearing into the heating device 1. The heating component in the heating device 1 heats the heating device 1. It is preheated to 500 to 600 degrees Celsius to reduce the thermal stress of the automobile bearing in the subsequent heat treatment process. After being heated to the preset quenching temperature, the automobile bearing is kept at the preset quenching temperature for a period of time to ensure that the internal temperature of the automobile bearing is uniform and the structure transformation is complete. The preset quenching temperature is determined by the type of material used for the automobile bearing and the required performance;

[0047] Step 2: Place the automobile bearing into the cooling device 2, and the cooling component in the cooling device 2 quickly cools the automobile bearing;

[0048] Step 3: As the automobile bearing needs higher strength and toughness, it needs to be tempered at high temperature. The automobile bearing is placed in the tempering device 3. The tempering component in the tempering device 3 tempers the quenched automobile bearing to reduce the quenching stress and improve the toughness and stability of the automobile bearing. The tempering temperature is 550 degrees Celsius to 650 degrees Celsius.

[0049] Step 4. Since the automobile bearings may leave oil stains, oxide scale, quenching medium residues, grinding fluid or other contaminants on the surface of the automobile bearings in steps 1 to 3, cleaning can remove these residues to prevent them from having a negative impact on the performance and life of the automobile bearings. The automobile bearings are placed in the multifunctional cavity 5 of the cleaning and testing device 4. The cleaning component in the multifunctional cavity 5 cleans the automobile bearings to remove the residues on the automobile bearings. The testing component performs quality testing on the automobile bearings to detect whether the hardness of the automobile bearings meets the standards. Hardness is one of the important indicators for measuring the performance of automobile bearing materials. Through hardness testing, it can be ensured that the automobile bearing materials meet specific hardness requirements, thereby ensuring their quality and performance.

[0050] Implementation process of cleaning and testing device 4:

[0051] In the initial rotation state, the second rack 9 is located below the first gear 15, the first rack 8 is located below the second gear 21, the permanent magnet plate 10 is located below the permanent magnet block 26, the multifunctional cavity 5 is filled with cleaning liquid, the slide plate 7 supports the cleaning liquid, and the cleaning liquid does not contact the first mesh box 11 and the second mesh box 16.

[0052] When it is necessary to clean and inspect the automobile bearing, open the door 37 and put the automobile bearing into the multifunctional cavity 5. The automobile bearing is located in the first tank 12 and the second tank 17. The processing module controls the extension of the piston rod on the first cylinder 6, controls the slide plate 7, the first rack 8, the second rack 9 and the permanent magnet plate 10 to move upward, so that the cleaning liquid immerses the automobile bearing. During the upward movement of the slide plate 7, the permanent magnet plate 10 first moves up to the left side of the permanent magnet block 26. The magnetic repulsion of the permanent magnet plate 10 pushes the permanent magnet block 26 to the right to overcome the elastic force of the first elastic member 25. The side wall of the second tank 17 pushes the automobile bearing to the right. The side wall of the groove 12 cooperates with the side wall of the second box groove 17 to clamp and fix the automobile bearing, the slide plate 7 continues to move upward, the first rack 8 and the second gear 21 are meshed, and the second rack 9 and the first gear 15 are meshed, so that the second net box 16 and the first net box 11 rotate, and the automobile bearing rotates in the cleaning liquid to achieve rotary cleaning, so that impurities in the automobile bearing are washed into the cleaning liquid during rotation, and the cleaning liquid can be evenly contacted with the automobile bearing to prevent only local cleaning liquid from functioning. The first cylinder 6 controls the slide plate 7 to move back and forth up and down, so that the automobile bearing rotates back and forth continuously, increasing the cleaning time.

[0053] After cleaning for a certain period of time, usually fifteen to thirty minutes, the slide plate 7 moves down until the first rack 8 disengages and meshes with the second gear 21, and the second rack 9 disengages and meshes with the first gear 15. The cleaning liquid does not contact the automobile bearing to prevent affecting the detection, but the permanent magnet plate 10 is still on the left side of the permanent magnet block 26, and the first net box 11 and the second net box 16 continue to clamp the automobile bearing. Due to inertia, after the first rack 8 disengages from the second gear 21, the second net box 16 will rotate slightly, causing the automobile bearing to be in a non-horizontal state. At this time, the processing module controls the second cylinder 29 to extend, so that the measuring needle 31, the limit bar 34 and the elastic friction plate 38 move down. First, the limit bar 3 4 and the outer wall of the second rotating shaft 18 are abutted against each other, and then the elastic friction plate 38 and the friction layer 28 are abutted against each other. The friction force between the elastic friction plate 38 and the friction layer 28 causes the second rotating shaft 18 to rotate, so that the limiting groove 27 is aligned with the limiting strip 34. The limiting strip 34 is inserted into the limiting groove 27 under the elastic force of the second elastic member 35, and the second rotating shaft 18 is limited to keep the automobile bearing in a horizontal state. When the elastic friction plate 38 continues to move downward, it will no longer drive the automobile bearing to rotate. The measuring needle 31 is pressed into the surface of the automobile bearing to perform a hardness test on the automobile bearing, and the test data is transmitted to the external terminal device through the wireless module for the user to view and judge whether the quality of the automobile bearing is qualified.

[0054] After the detection is completed, the permanent magnet plate 10 moves down to below the permanent magnet block 26. After the permanent magnet block 26 loses the magnetic repulsion of the permanent magnet plate 10, the second net box 16 moves left and resets under the elastic force of the first elastic member 25. The second net box 16 releases the clamping of the automobile bearing, and the user can open the door body 37 to take out the automobile bearing for subsequent processing.

[0055] The present invention can use a device to deeply clean automobile bearings after heat treatment and tempering, effectively remove residues on automobile bearings, and can simultaneously perform hardness testing on the cleaned automobile bearings, automatically and quickly screen out automobile bearings with qualified quality, and improve the heat treatment efficiency of automobile bearings; by driving a slide plate 7, the automobile bearings can be clamped, rotary cleaned, and the cleaning liquid moved, thereby improving the cleaning quality and cleaning efficiency; by driving a second cylinder 29, the automobile bearings can be corrected and positioned, and the probe 31 can also perform hardness testing on the automobile bearings, thereby improving the quality inspection efficiency.

[0056] According to an optional embodiment of the present invention, the cleaning liquid can be selected from one of a water-based cleaning liquid, a solvent-based cleaning liquid or an alkaline cleaning liquid.

[0057] The components, modules, mechanisms and devices not described in detail in the present invention are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A heat treatment device for the working surface of an automobile bearing, characterized in that: The device comprises a heating device (1), a cooling device (2), a tempering device (3) and a cleaning and testing device (4) which are connected in sequence, wherein the heating device (1) is connected with a heating component, the cooling device (2) is connected with a cooling component, the tempering device (3) is connected with a tempering component, and the cleaning and testing device (4) is provided with a multifunctional cavity (5), and the multifunctional cavity (5) is connected with a cleaning component and a testing component; The cleaning assembly comprises a first cylinder (6), a slide plate (7), a first rack (8), a second rack (9), a permanent magnet plate (10) and a clamping and rotating assembly, wherein the first cylinder (6) is fixedly connected to the bottom wall of the multifunctional cavity (5), the slide plate (7) is slidably connected to the side wall of the multifunctional cavity (5), the slide plate (7) is fixedly connected to the piston rod of the first cylinder (6), and the first rack (8), the second rack (9) and the permanent magnet plate (10) are all fixedly connected to the top wall of the slide plate (7); The clamping rotating assembly comprises a first net box (11), a first rotating shaft (13), a first connecting seat (14), a first gear (15), a second net box (16), a second rotating shaft (18), a second connecting seat (19) and a transmission device (20). The first net box (11) and the first gear (15) are both fixedly connected to the first rotating shaft (13). The first net box (11) is provided with a first box slot (12). The first rotating shaft (13) is rotatably connected to the first connecting seat (14). The first connecting seat (14) and the second connecting seat (19) are both fixedly connected to the rear wall of the multifunctional chamber (5). The second net box (16) is provided with a second box slot (17). The box (16) is fixedly connected to the second rotating shaft (18), the second rotating shaft (18) and the transmission device (20) are both rotatably connected to the second connecting seat (19), a connecting channel (22) is provided on the transmission device (20), the second rotating shaft (18) is slidably connected to the inner wall of the connecting channel (22), a transmission groove (23) is provided on the inner wall of the connecting channel (22), a connecting piece (24) and a permanent magnet block (26) are fixedly connected to the second rotating shaft (18), the connecting piece (24) is connected to the side wall of the transmission groove (23) through a first elastic member (25), the connecting piece (24) is slidably connected to the inner wall of the transmission groove (23), and a second gear (21) is fixedly connected to the transmission device (20).

2. The heat treatment device for the working surface of an automobile bearing according to claim 1 is characterized in that: The second rotating shaft (18) is provided with a limit groove (27), the second rotating shaft (18) is fixedly connected with a friction layer (28), the detection assembly comprises a second cylinder (29), a hardness detector (30), a measuring needle (31), an adjustment plate (32), a limit plate (33), a limit strip (34), a second elastic member (35) and a protrusion (36), the second cylinder (29) is fixedly connected to the top wall of the multifunctional cavity (5), and the hardness detector (30) is slidably connected to the multifunctional cavity (5) The hardness tester (30) is fixedly connected to the lower end of the piston rod on the second cylinder (29), the measuring needle (31), the adjustment plate (32) and the limit plate (33) are all fixedly connected to the bottom wall of the hardness tester (30), the rear wall of the adjustment plate (32) is detachably connected with an elastic friction plate (38), the protrusion (36) is fixedly connected to the limit plate (33), the limit strip (34) is slidably connected to the limit plate (33), and the limit strip (34) is connected to the limit plate (33) through a second elastic member (35) and the protrusion (36).

3. The heat treatment device for the working surface of an automobile bearing according to claim 2 is characterized in that: The first box slot (12) is connected to the top wall and the left side wall of the first net box (11), and the second box slot (17) is connected to the top wall and the right side wall of the second net box (16).

4. The heat treatment device for the working surface of an automobile bearing according to claim 3 is characterized in that: The cleaning and testing device (4) is connected to a processing module, and the hardness tester (30) is connected to a wireless module.

5. The heat treatment device for the working surface of an automobile bearing according to claim 4 is characterized in that: The cleaning and detecting device (4) is movably connected to a door body (37).

6. The heat treatment device for the working surface of an automobile bearing according to claim 5 is characterized in that: The door body (37) is made of transparent glass.

7. The heat treatment device for the working surface of an automobile bearing according to claim 5 is characterized in that: The elastic friction plate (38) is a silica gel plate.

8. The heat treatment device for the working surface of an automobile bearing according to claim 5 is characterized in that: The elastic friction plate (38) is a sponge plate.

9. A method for heat treatment of the working surface of an automobile bearing, characterized in that: The automobile bearing working surface heat treatment device according to any one of claims 1 to 8 comprises the following steps: Step 1: placing the automobile bearing into the heating device (1), wherein the heating component in the heating device (1) performs a heating treatment on the heating device (1), and after heating to a preset quenching temperature, the automobile bearing is kept at the preset quenching temperature for a period of time to ensure that the temperature inside the automobile bearing is uniform and the structure transformation is complete; Step 2: placing the automobile bearing into the cooling device (2), wherein the cooling component in the cooling device (2) rapidly cools the automobile bearing; Step 3, placing the automobile bearing into a tempering device (3), wherein the tempering component in the tempering device (3) performs a tempering treatment on the quenched automobile bearing to reduce the quenching stress and improve the toughness and stability of the automobile bearing; Step 4: Place the automobile bearing into the multifunctional cavity (5) of the cleaning and testing device (4); the cleaning component in the multifunctional cavity (5) cleans the automobile bearing to remove residues on the automobile bearing; and the testing component performs quality testing on the automobile bearing.

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