A heat treatment device and heat treatment method for precision automobile bearing ring

Abstract

The present invention discloses a heat treatment device and a heat treatment method for a precision automobile bearing ring, comprising: a clamping cover, which comprises a coaxially movable heating cover and a cold quenching cover; a bearing ring, on which a fixed cover is arranged, the fixed cover is movably arranged in the heating cover, and rotates in the opposite direction to the heating cover; a heating mechanism, which comprises a heating induction coil eccentrically arranged on the heating cover, the heating induction coil rotates along the inner wall of the bearing ring, and rotates with the movement of the fixed cover to separate from the inner wall of the bearing ring. The heat treatment device and the heat treatment method for a precision automobile bearing ring provided by the present invention heat the inner wall of the bearing ring by induction heating through the heating induction coil rotating with the heating cover, so as to avoid the overall hardness of the bearing ring being increased and the toughness being decreased during the subsequent cooling and quenching, and the inner wall being in contact with the bearing ball for wear resistance, while the toughness of the outer ring of the bearing ring can also withstand the impact generated when the gear shaft is running, thereby reducing the possibility of fracture.

Description

Technical Field

[0001] The invention relates to the technical field of heat treatment of automobile bearing rings, and in particular to a heat treatment device and a heat treatment method for a precision automobile bearing ring. Background Art

[0002] Bearing rings mainly play a fixing role and are usually used in automobile gearboxes or transmission systems to support the rotation of gear shafts.

[0003] The inner wall of the bearing ring will directly contact the bearing ball. In order to reduce the wear of the bearing ring, the bearing ring will be quenched to increase the hardness.

[0004] According to patent number CN111809039A, published (announcement) date: 2020-10-23, a cooling device for heat treatment of automobile bearing rings is disclosed, including a box body and a base, the box body is fixed on the base, the upper end of the box body is hinged with a box cover, a pump body 1 is fixed to the left part of the box body, a pump body 2 is fixed to the right part of the box body, a conduit is fixed to the right side of the pump body 1, and the conduit is fixed to the inner wall of the box body. The present invention uses pump body 1, conduit, water outlet pipe and nozzle to facilitate spraying of products on the placement plate and achieve rapid cooling. Through the placement plate and placement rack, it is convenient to place a large number of products in layers, improve the cooling effect and cooling efficiency. Through pump body 2, cooling trough and refrigeration rod, it is convenient to cool the cooling water and realize recycling. Through guide rails, sliders, support rods and pulleys, it is convenient to guide the placement rack, which is convenient for personnel to take and place products and convenient for operation.

[0005] In the prior art including the above-mentioned patent, when the bearing ring is quenched, the entire bearing ring is heated and cooled as a whole. Although the overall cooling can increase the hardness of the inner wall of the bearing ring, it will reduce the overall toughness. When assembled in a position that is subjected to impact, cracks are easily generated due to low toughness. Summary of the invention

[0006] The purpose of the present invention is to provide a heat treatment device and a heat treatment method for a precision automobile bearing ring, aiming to solve the problem that the overall toughness of the bearing ring is reduced when the bearing ring is quenched as a whole.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a precision automobile bearing ring heat treatment device, comprising:

[0008] A clamping cover, which includes a coaxially movable heating cover and a quenching cover;

[0009] A bearing ring, on which a fixed cover is arranged, the fixed cover is movably arranged in the heating cover and rotates in the opposite direction to the heating cover;

[0010] The heating mechanism comprises a heating induction coil eccentrically arranged on the heating cover, the heating induction coil rotates along the inner wall of the bearing ring and rotates with the movement of the fixed cover to separate from the inner wall of the bearing ring.

[0011] Preferably, a driving assembly is further included, which includes a driving column and a telescopic tube arranged in the heating hood, a telescopic link cable is movably arranged in the telescopic tube, and the driving column rotates with the heating hood to couple the telescopic link cable to drive the bearing ring to rotate.

[0012] Preferably, a driving column is further included, an eccentric wheel is arranged on the heating induction coil, and the driving column is driven to move to couple the eccentric wheel to rotate along the heating cover to a predetermined angle so that the heating induction coil is separated from the inner wall of the bearing ring.

[0013] Preferably, it further includes an opening and closing mechanism, wherein a water storage jacket is provided on the quenching cover, a water storage tank is provided on the water storage jacket, and the opening and closing mechanism includes a sealing ring slidably connected to the water storage jacket and a push ring slidably connected inside the quenching cover, and the fixed cover is driven to slide into the quenching cover to push the push ring so that the sealing ring opens the water storage tank.

[0014] Preferably, the sealing ring is provided with a connecting rope, the connecting rope is slidably connected to the water storage jacket, and the push ring is provided with a sliding magnetic block, the sliding magnetic block is magnetically connected to the connecting rope.

[0015] Preferably, a quick quenching mechanism is provided on the water storage jacket, and the quick quenching mechanism includes a docking block slidably connected to the quenching cover, and the docking block moves with the fixed cover to engage the water storage jacket to make the water storage jacket rotate and expand.

[0016] Preferably, a push column is provided on the docking block, a docking groove corresponding to the docking block is formed on the water storage sleeve, and the fixed cover pushes against the push column to make the docking block snap into the docking groove.

[0017] Preferably, a rotating shaft is provided on the heating cover, an exhaust mechanism is provided on the rotating shaft, the exhaust mechanism comprises an exhaust groove, and the exhaust groove opens and closes as the fixed cover moves.

[0018] Preferably, it further comprises a telescopic tube, on which a covering cover is provided, and the covering cover is slidably connected to the rotating shaft.

[0019] A heat treatment method for a precision automobile bearing ring, the heat treatment method applied to the above-mentioned precision automobile bearing ring heat treatment device is as follows:

[0020] S01. Install the bearing ring in the fixed cover, and place the fixed cover between the heating cover and the quenching cover;

[0021] S02, the heating cover and the cold quenching cover are closed to squeeze the fixed cover into the heating cover, and then the heating cover is rotated to mobilize the heating induction coil to heat along the inner wall of the bearing ring;

[0022] S03, after the inner ring of the bearing ring is heated to a predetermined temperature, the heating induction coil is disengaged, and then the fixed cover is moved into the cold quenching cover;

[0023] S04. After the fixed cover moves to the water splashing angle of the water storage jacket, the water storage jacket discharges water to cool and quench the inner ring of the bearing ring.

[0024] In the above technical scheme, a precision automobile bearing ring heat treatment device and heat treatment method provided by the present invention have the following beneficial effects: the inner wall of the bearing ring is heated by induction heating by rotating the heating induction coil with the heating cover to avoid the overall hardness of the bearing ring being increased and the toughness being reduced during subsequent cooling and quenching. While the inner wall contacts the bearing ball for wear resistance, the toughness of the outer ring of the bearing ring can also withstand the impact generated by the operation of the gear shaft, reducing the possibility of breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0027] Figure 2 An overall explosion diagram provided for an embodiment of the present invention;

[0028] Figure 3 An exploded schematic diagram of a rapid quenching mechanism provided by an embodiment of the present invention;

[0029] Figure 4 An exploded schematic diagram of a drive assembly provided in an embodiment of the present invention;

[0030] Figure 5 An overall cross-sectional schematic diagram provided for an embodiment of the present invention;

[0031] Figure 6 for Figure 5 The enlarged schematic diagram at A in the middle;

[0032] Figure 7 for Figure 5 The enlarged schematic diagram of point B in the middle;

[0033] Figure 8 A schematic cross-sectional view of another aspect of the present invention;

[0034] Fig. 9 for Figure 8 The enlarged schematic diagram at C in the middle;

[0035] Fig.10 for Figure 8 Enlarged schematic diagram at point D in the middle.

[0036] Description of reference numerals:

[0037] 1. Clamping cover; 10. Fixing cover; 101. Threaded groove; 102. Fixing block; 103. Bearing ring; 11. Heating cover; 111. Rotating shaft; 12. Cold quenching cover; 121. Inclined groove; 122. Guide surface; 2. Heating mechanism; 21. Eccentric wheel; 22. Heating induction coil; 23. Arc plate; 231. Arc groove; 3. Exhaust mechanism; 31. Cover cover; 32. Exhaust groove; 4. Driving assembly; 41. Driving column; 411. First driving wheel; 412 , second driving wheel; 42, telescopic link rope; 421, third driving wheel; 422, fourth driving wheel; 43, telescopic tube; 5, quick quenching mechanism; 51, water storage jacket; 511, docking groove; 512, magnetic block; 513, spring; 52, water storage tank; 521, water pipe; 53, push column; 531, docking block; 54, tilting block; 541, elastic column; 60, push ring; 61, sealing ring; 601, sliding magnetic block; 62, fixing ring; 621, connecting rope. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0039] Embodiment 1

[0040] like Figure 1-10 As shown, a precision automobile bearing ring heat treatment device comprises:

[0041] A clamping cover 1, which includes a coaxially movable heating cover 11 and a quenching cover 12;

[0042] The bearing ring 103 is provided with a fixed cover 10, and the fixed cover 10 is movably arranged in the heating cover 11 and rotates in the opposite direction to the heating cover 11;

[0043] The heating mechanism 2 comprises a heating induction coil 22 eccentrically arranged on the heating cover 11 . The heating induction coil 22 rotates along the inner wall of the bearing ring 103 and rotates along with the movement of the fixed cover 10 to be separated from the inner wall of the bearing ring 103 .

[0044] Specifically, the heating cover 11 is fixed to the output end of the motor, and the quenching cover 12 is fixed to the output end of the telescopic motor. The inner diameter of the heating cover 11 is larger than the predetermined size of the inner diameter of the quenching cover 12 (the predetermined size is 0.1mm~1.3mm), and the inner walls of the quenching cover 12 and the heating cover 11 are both flexible layers (the flexible layer can be a rubber layer or an elastic metal layer). A plurality of fixing blocks 102 are arranged in a circular array in the fixed cover 10. The fixing blocks 102 fit the bearing ring 103 to play a role of fixing and heat insulation. The quenching cover 12 is provided with an inclined groove 121, and the heating cover 11 is provided with a convex block. When the quenching cover 12 and the heating cover 11 are clamped, the convex block will be stuck in the inclined groove 121, so that the quenching cover 12 can rotate together with the heating cover 11. When in use, The bearing ring 103 is fixed on the fixed cover 10, and the fixed cover 10 is installed in the heating cover 11, so that the heating induction coil 22 covers the inner wall of the bearing ring 103, and then the heating induction coil 22 is energized to heat the inner wall of the bearing ring 103, and at the same time the heating cover 11 is driven to rotate, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to achieve heating of the inner ring of the bearing ring 103. After the bearing ring 103 is heated to a predetermined temperature (the predetermined temperature is 745°C~900°C), the fixed cover 10 and the heating cover 11 rotate in opposite directions, and at the same time the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to separate from the inner wall of the bearing ring 103, so that the fixed cover 10 rotates into the cold quenching cover 12 for cooling.

[0045] In the above technical solution, the heating induction coil 22 rotates with the heating cover 11 to heat the inner wall of the bearing ring 103 by induction heating, so as to avoid the overall hardness of the bearing ring 103 increasing and the toughness decreasing during subsequent cooling and quenching. While the inner wall contacts the bearing ball for wear resistance, the toughness of the outer ring of the bearing ring 103 can also withstand the impact generated by the operation of the gear shaft, thereby reducing the possibility of breakage.

[0046] As an embodiment provided by the present invention, it also includes a driving component 4, which includes a driving column 41 and a telescopic tube 43 arranged in the heating cover 11, a telescopic link rope 42 is movably arranged in the telescopic tube 43, and the driving column 41 rotates with the heating cover 11 to couple the telescopic link rope 42 to drive the bearing ring 103 to rotate.

[0047] Specifically, the driving column 41 is provided with a first driving wheel 411 and a second driving wheel 412 at both ends, and the telescopic link cable 42 is provided with a third driving wheel 421 and a fourth driving wheel 422 at both ends. The fixed cover 10 is provided with a threaded groove 101, and the driving column 41 can slide in the vertical direction. When the fixed cover 10 needs to be moved, the driving column 41 is pushed to move in the vertical direction, so that the first driving wheel 411 is coupled to the third driving wheel 421, and the second driving wheel 412 is coupled to the heating cover 11. At this time, the heating cover 11 rotates to drive the driving column 41 to rotate, and then the driving column 41 is coupled to the heating cover 11. The telescopic link rope 42 rotates in the telescopic tube 43 to couple with the inner wall of the fixed cover 10 through the fourth driving wheel 422, driving the fixed cover 10 and the heating cover 11 to rotate towards each other. At this time, due to the influence of the change in friction of the threaded groove 101, the fixed cover 10 will slide along the heating cover 11 into the quenching cover 12 to realize the movement of the fixed cover 10. The telescopic tube 43 is a conventional double-layer tube sleeve structure, which can be telescopic along the axial direction of the heating cover 11, and the telescopic link rope 42 also has telescopic ability, which can enable the fourth driving wheel 422 to always couple with the inner wall of the fixed cover 10 when the fixed cover 10 moves.

[0048] In the above scheme, the telescopic link rope 42 can be formed by a plurality of telescopic hinges rotatably connected to each other; it can also be formed by a telescopic tube and a metal buckle connected to each other; or other structures known to those skilled in the art that can achieve telescopic and transmission at the same time.

[0049] First, the bearing ring 103 is fixed on the fixed cover 10, and the fixed cover 10 is installed in the heating cover 11, so that the heating induction coil 22 covers the inner wall of the bearing ring 103, and then the heating induction coil 22 is energized to heat the inner wall of the bearing ring 103, and the heating cover 11 is driven to rotate, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to achieve heating of the inner ring of the bearing ring 103. After the bearing ring 103 is heated to a predetermined temperature, the driving column 41 is pushed to couple the inner wall of the fixed cover 10 through the fourth driving wheel 422, so that the fixed cover 10 and the heating cover 11 rotate in opposite directions, and the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to separate from the inner wall of the bearing ring 103, and the fixed cover 10 rotates into the cold quenching cover 12 for cooling.

[0050] As the optimal embodiment provided by the present invention, it also includes a driving column 41. An eccentric wheel 21 is arranged on the heating induction coil 22. The driving column 41 is driven to move to couple the eccentric wheel 21 to rotate along the heating cover 11 to a predetermined angle so that the heating induction coil 22 is separated from the inner wall of the bearing ring 103.

[0051] Specifically, the eccentric wheel 21 is rotatably connected to the heating cover 11, an arc plate 23 is provided on the eccentric wheel 21, an arc groove 231 is provided on the heating cover 11 for the arc plate 23 to move, a retarding damper is provided between the arc plate 23 and the arc groove 231, and the retarding damper can slow down the rebound speed of the arc groove 231. When the driving column 41 moves in the vertical direction, the second driving wheel 412 will intermittently couple the arc plate 23 to slide along the arc groove 231 during rotation, and compress the retarding damper, and the retarding damper keeps the eccentric wheel 21 to rebound slowly when the second driving wheel 412 and the arc plate 23 are decoupled, so that when the second driving wheel 412 couples the arc plate 23 next time, the eccentric wheel 21 does not move the heating induction coil 22 to the inner wall of the bearing ring 103, and keeps the heating induction coil 22 in a state of being separated from the inner wall of the bearing ring 103, so as to fix the movement of the cover 10.

[0052] First, the bearing ring 103 is fixed on the fixed cover 10, and the fixed cover 10 is installed in the heating cover 11, so that the heating induction coil 22 covers the inner wall of the bearing ring 103, and then the heating induction coil 22 is energized to heat the inner wall of the bearing ring 103, and the heating cover 11 is driven to rotate, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to achieve the heating of the inner ring of the bearing ring 103. After the bearing ring 103 is heated to a predetermined temperature, the driving column 41 is pushed to couple the inner wall of the fixed cover 10 through the fourth driving wheel 422, so that the fixed cover 10 and the heating cover 11 rotate in opposite directions. At the same time, the second driving wheel 412 will intermittently couple the arc plate 23 to slide along the arc groove 231 during rotation, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to separate from the inner wall of the bearing ring 103, and the fixed cover 10 enters the cold quenching cover 12 for cooling as it rotates.

[0053] As an embodiment provided by the present invention, it also includes an opening and closing mechanism. A water storage jacket 51 is provided on the quenching cover 12, and a water storage tank 52 is provided on the water storage jacket 51. The opening and closing mechanism includes a sealing ring 61 slidably connected to the water storage jacket 51 and a push ring 60 slidably connected to the quenching cover 12. The fixed cover 10 is driven to slide into the quenching cover 12 to push the push ring 60, so that the sealing ring 61 opens the water storage tank 52.

[0054] Specifically, a water pipe 521 is provided on the water storage tank 52, and the water pipe 521 is fixedly connected to the water filling unit (the water filling unit can be a water pipe or a water pump), a fixed ring 62 is provided on the sealing ring 61, and a spring 513 is provided between the fixed ring 62 and the water storage jacket 51, and the spring 513 is used to push the sealing ring 61 to re-close the water storage tank 52 after opening the water filling unit, and the fixed cover 10 will slide along the heating cover 11 into the cold quenching cover 12 with the rotation, and when the fixed cover 10 enters the water splashing range of the water storage tank 52, the fixed cover 10 will push the push ring 60 to slide, and at this time, the sealing ring 61 will slide with the sliding of the push ring 60 to open the water storage tank 52, so that the water in the water storage tank 52 is sprayed on the inner wall of the bearing ring 103 for quenching. The opening and closing of the water storage tank 52 is triggered by the sliding of the fixed cover 10, without using too many electronic sensors, can adapt to the quenching environment with large temperature difference changes, is not easy to age, and has a long service life.

[0055] First, the bearing ring 103 is fixed on the fixed cover 10, and the fixed cover 10 is installed in the heating cover 11, so that the heating induction coil 22 covers the inner wall of the bearing ring 103, and then the heating induction coil 22 is energized to heat the inner wall of the bearing ring 103. At the same time, the heating cover 11 is driven to rotate, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to achieve the heating of the inner ring of the bearing ring 103. After the bearing ring 103 is heated to a predetermined temperature, the driving column 41 is pushed to couple the fixed The inner wall of the fixed cover 10 drives the fixed cover 10 and the heating cover 11 to rotate towards each other. At the same time, the second driving wheel 412 will intermittently couple the arc plate 23 to slide along the arc groove 231 during rotation, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to separate from the inner wall of the bearing ring 103, and then the fixed cover 10 slides into the quenching cover 12 as it rotates. When the fixed cover 10 slides against the push ring 60, the sealing ring 61 opens the water storage tank 52, so that the water in the water storage tank 52 is sprayed on the inner wall of the bearing ring 103 for quenching.

[0056] As the optimal embodiment provided by the present invention, a connecting rope 621 is provided on the sealing ring 61, and the connecting rope 621 is slidably connected to the water storage jacket 51. A sliding magnetic block 601 is provided on the push ring 60, and the sliding magnetic block 601 is magnetically connected to the connecting rope 621.

[0057] Specifically, the connecting rope 621 is arranged on the fixed ring 62, and a magnetic block 512 is arranged at the end of the connecting rope 621. The magnetic block 512 can be magnetically connected to the sliding magnetic block 601. When the fixed cover 10 does not push the push ring 60, the spring 513 will push the blocking ring 61 to block the water tank 52, and will pull the push ring 60 to slide through the magnetic block 512 and the sliding magnetic block 601.

[0058] First, the bearing ring 103 is fixed on the fixed cover 10, and the fixed cover 10 is installed in the heating cover 11, so that the heating induction coil 22 covers the inner wall of the bearing ring 103, and then the heating induction coil 22 is energized to heat the inner wall of the bearing ring 103, and at the same time, the heating cover 11 is driven to rotate, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to achieve heating of the inner ring of the bearing ring 103. After the bearing ring 103 is heated to a predetermined temperature, the driving column 41 is pushed to couple the inner wall of the fixed cover 10 through the fourth driving wheel 422 to drive the fixed cover 10 to rotate. The cover 10 and the heating cover 11 rotate in opposite directions, and the second driving wheel 412 will intermittently couple the arc plate 23 to slide along the arc groove 231 during rotation, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to separate from the inner wall of the bearing ring 103, and then the fixed cover 10 slides into the cold quenching cover 12 as it rotates. When the fixed cover 10 slides against the push ring 60, the sealing ring 61 is pulled to open the water storage tank 52 through the magnetically connected magnetic suction block 512 and the sliding magnetic block 601, so that the water in the water storage tank 52 is sprayed on the inner wall of the bearing ring 103 for quenching.

[0059] As an embodiment provided by the present invention, a quick quenching mechanism 5 is provided on the water storage jacket 51, and the quick quenching mechanism 5 includes a docking block 531 slidably connected to the cold quenching cover 12, and the docking block 531 moves with the fixed cover 10 to engage the water storage jacket 51 so that the water storage jacket 51 rotates and expands.

[0060] Specifically, when the fixed cover 10 slides into the quenching cover 12 as it rotates, the docking block 531 moves with the fixed cover 10 to engage the water storage jacket 51. At this time, the water storage jacket 51 will be docked and fixed with the quenching cover 12 and rotate at the same time. One side of the water storage tank 52 is an elastic surface. When the water storage jacket 51 rotates, the elastic surface on the water storage tank 52 will expand due to the centrifugal force of water, thereby increasing the water storage capacity and the water pressure in the water storage tank 52. When the bearing ring 103 is quenched, the cooling amount of the instantaneous contact with the bearing ring 103 is increased to ensure the cooling speed of the bearing ring 103.

[0061] First, the bearing ring 103 is fixed on the fixed cover 10, and the fixed cover 10 is installed in the heating cover 11, so that the heating induction coil 22 covers the inner wall of the bearing ring 103, and then the heating induction coil 22 is energized to heat the inner wall of the bearing ring 103, and the heating cover 11 is driven to rotate, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to achieve heating of the inner ring of the bearing ring 103. After the bearing ring 103 is heated to a predetermined temperature, the driving column 41 is pushed to couple the inner wall of the fixed cover 10 through the fourth driving wheel 422, so as to drive the fixed cover 10 and the heating cover 11 to rotate in opposite directions. The driving wheel 412 will intermittently couple the arc plate 23 to slide along the arc groove 231 during rotation, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to disengage from the inner wall of the bearing ring 103, and then the fixed cover 10 slides into the quenching cover 12 as it rotates. At this time, the docking block 531 moves with the fixed cover 10 to engage the water storage sleeve 51, so that the water storage tank 52 expands due to rotation, and then as the fixed cover 10 continues to move, the magnetic suction block 512 and the sliding magnetic block 601 that are magnetically connected will pull the sealing ring 61 to open the water storage tank 52, so that the water in the water storage tank 52 is sprayed on the inner wall of the bearing ring 103 for quenching.

[0062] As the optimal embodiment provided by the present invention, a push column 53 is provided on the docking block 531, and a docking groove 511 corresponding to the docking block 531 is opened on the water storage jacket 51. The fixed cover 10 pushes against the push column 53 to make the docking block 531 snap into the docking groove 511.

[0063] Specifically, a sliding tube is provided on the quenching cover 12, and the pushing column 53 is slidably connected in the sliding tube. A guide surface 122 is provided on the sliding tube, and an inclined block 54 is provided on the pushing column 53. An elastic column 541 is provided on the inclined block 54. The inclined block 54 extends out of the sliding tube and enters the inner wall of the quenching cover 12. When the fixed cover 10 enters the quenching cover 12, it will first push the inclined block 54 to slide along the guide surface 122 to push the pushing column 53. At this time, the docking block 531 will fit the outer wall of the water storage jacket 51, and as the quenching cover 12 rotates, the docking block 531 will be stuck in the docking groove 511 to fix the water storage jacket 51 and the quenching cover 12 and rotate synchronously. The elastic column 541 can be deformed when the docking block 531 is not stuck in the docking groove 511, and always give the tilting block 54 a certain pushing force.

[0064] First, the bearing ring 103 is fixed on the fixed cover 10, and the fixed cover 10 is installed in the heating cover 11, so that the heating induction coil 22 covers the inner wall of the bearing ring 103, and then the heating induction coil 22 is energized to heat the inner wall of the bearing ring 103, and the heating cover 11 is driven to rotate, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to achieve the heating of the inner ring of the bearing ring 103. After the bearing ring 103 is heated to a predetermined temperature, the driving column 41 is pushed to couple the inner wall of the fixed cover 10 through the fourth driving wheel 422, so as to drive the fixed cover 10 and the heating cover 11 to rotate in opposite directions, and the second driving wheel 412 will intermittently couple during rotation. The arc plate 23 slides along the arc groove 231 so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to detach from the inner wall of the bearing ring 103, and then the fixed cover 10 slides into the cold quenching cover 12 along with the rotation. At this time, the fixed cover 10 pushes against the tilting block 54 and inserts the docking block 531 into the docking groove 511 to engage the water storage sleeve 51, so that the water storage tank 52 expands due to rotation, and then as the fixed cover 10 continues to move, the fixed cover 10 pushes against the push ring 60, and the sealing ring 61 is pulled through the magnetically connected magnetic block 512 and the sliding magnetic block 601 to open the water storage tank 52, so that the water in the water storage tank 52 is sprayed on the inner wall of the bearing ring 103 for quenching.

[0065] As the best embodiment provided by the present invention, the heating cover 11 is provided with a rotating shaft 111, and the rotating shaft 111 is provided with an exhaust mechanism 3, and the exhaust mechanism 3 includes an exhaust groove 32, and the exhaust groove 32 opens and closes as the fixed cover 10 moves;

[0066] The telescopic tube 43 is also included. A covering cover 31 is disposed on the telescopic tube 43 . The covering cover 31 is slidably connected to the rotating shaft 111 .

[0067] Specifically, the exhaust groove 32 is fixedly connected to the inner wall of the heating cover 11. When the fixed cover 10 slides into the quenching cover 12, the covering cover 31 will be pulled by the telescopic tube 43 as the fixed cover 10 moves to open the exhaust groove 32. When the quenching cover 12 quenches the bearing ring 103 to generate steam, the floating steam can be promptly discharged through the exhaust groove 32 to avoid steam accumulation in the quenching cover 12 to corrode the bearing ring 103, so as to prevent the bearing ring 103 from rusting when it is placed later.

[0068] First, the bearing ring 103 is fixed on the fixed cover 10, and the fixed cover 10 is installed in the heating cover 11, so that the heating induction coil 22 covers the inner wall of the bearing ring 103, and then the heating induction coil 22 is energized to heat the inner wall of the bearing ring 103, and the heating cover 11 is driven to rotate, so that the heating induction coil 22 rotates along the inner wall of the bearing ring 103 to achieve the heating of the inner ring of the bearing ring 103. After the bearing ring 103 is heated to a predetermined temperature, the driving column 41 is pushed to couple the inner wall of the fixed cover 10 through the fourth driving wheel 422, so as to drive the fixed cover 10 and the heating cover 11 to rotate in opposite directions. At the same time, the second driving wheel 412 will intermittently couple the arc plate 23 to slide along the arc groove 231 during rotation, so that the heating The thermal induction coil 22 rotates along the inner wall of the bearing ring 103 to disengage from the inner wall of the bearing ring 103, and the fixed cover 10 slides into the cold quenching cover 12 as it rotates. At this time, the fixed cover 10 pushes against the tilting block 54, and the docking block 531 is inserted into the docking groove 511 to engage the water storage sleeve 51, so that the water storage tank 52 expands due to the rotation, and then as the fixed cover 10 continues to move, the covering cover 31 will be pulled by the telescopic tube 43 as the fixed cover 10 moves to open the exhaust groove 32, and the fixed cover 10 pushes against the push ring 60, and the sealing ring 61 will be pulled by the magnetically connected magnetic suction block 512 and the sliding magnetic block 601 to open the water storage tank 52, so that the water in the water storage tank 52 is sprayed on the inner wall of the bearing ring 103 for quenching.

[0069] Embodiment 2

[0070] A heat treatment method for a precision automobile bearing ring, the specific method is as follows:

[0071] S01, installing the bearing ring 103 in the fixed cover 10, and placing the fixed cover 10 between the heating cover 11 and the quenching cover 12;

[0072] S02, the heating cover 11 and the cold quenching cover 12 are closed by the pushing force of the telescopic motor to squeeze the fixed cover 10 into the heating cover 11, and then the heating cover 11 is driven by the motor to rotate, and the heating induction coil 22 is turned on at the same time, and moves along the inner wall of the bearing ring 103 with the rotation of the heating cover 11 to heat the inner ring of the bearing ring 103;

[0073] S03, after the inner ring of the bearing ring 103 is heated to a predetermined temperature (the predetermined temperature is 745°C to 900°C), the heating induction coil 22 is disengaged, and then the fixed cover 10 moves in the vertical direction as the heating cover 11 rotates, and moves into the cold quenching cover 12;

[0074] S04, after the fixed cover 10 moves to the water splashing angle of the water storage jacket 51, the water storage jacket 51 discharges water to cool and quench the inner ring of the bearing ring 103, completing the heat treatment and quenching steps of the bearing ring 103.

[0075] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A precision automobile bearing ring heat treatment device, characterized in that: include: A clamping cover (1) comprising a coaxially movable heating cover (11) and a quenching cover (12); A bearing ring (103) on which a fixed cover (10) is arranged, wherein the fixed cover (10) is movably arranged in the heating cover (11) and rotates in the same direction as the heating cover (11); A heating mechanism (2) comprising a heating induction coil (22) eccentrically arranged on the heating cover (11), wherein the heating induction coil (22) rotates along the inner wall of the bearing ring (103) and rotates along with the movement of the fixed cover (10) to separate from the inner wall of the bearing ring (103); The heating cover (11) further comprises a driving assembly (4), the driving assembly (4) comprising a driving column (41) and a telescopic tube (43) arranged in the heating cover (11), a telescopic link cable (42) being movably arranged in the telescopic tube (43), the driving column (41) rotating with the heating cover (11) to drive the bearing ring (103) to rotate by coupling with the telescopic link cable (42); It also comprises a driving column (41), an eccentric wheel (21) being arranged on the heating induction coil (22), and the driving column (41) being driven to move so as to couple with the eccentric wheel (21) to rotate along the heating cover (11) to a predetermined angle, so as to separate the heating induction coil (22) from the inner wall of the bearing ring (103); The invention also includes an opening and closing mechanism, wherein a water storage jacket (51) is provided on the quenching cover (12), and a water storage tank (52) is provided on the water storage jacket (51). The opening and closing mechanism includes a sealing ring (61) slidably connected to the water storage jacket (51) and a push ring (60) slidably connected to the inside of the quenching cover (12). The fixed cover (10) is driven to slide into the quenching cover (12) to push against the push ring (60), so that the sealing ring (61) opens the water storage tank (52).

2. A precision automobile bearing ring heat treatment device according to claim 1, characterized in that: The sealing ring (61) is provided with a connecting rope (621), the connecting rope (621) is slidably connected to the water storage jacket (51), and the push ring (60) is provided with a sliding magnetic block (601), the sliding magnetic block (601) is magnetically connected to the connecting rope (621).

3. A precision automobile bearing ring heat treatment device according to claim 1, characterized in that: The water storage jacket (51) is provided with a quick quenching mechanism (5), the quick quenching mechanism (5) comprising a docking block (531) slidably connected to the cold quenching cover (12), the docking block (531) moving with the fixed cover (10) to engage with the water storage jacket (51), so that the water storage jacket (51) rotates and expands.

4. A precision automobile bearing ring heat treatment device according to claim 3, characterized in that: The docking block (531) is provided with a push-pull column (53), the water storage jacket (51) is provided with a docking groove (511) corresponding to the docking block (531), and the fixed cover (10) pushes against the push-pull column (53) so that the docking block (531) is inserted into the docking groove (511).

5. The heat treatment device for precision automobile bearing rings according to claim 1 is characterized in that: The heating cover (11) is provided with a rotating shaft (111), and the rotating shaft (111) is provided with an exhaust mechanism (3), the exhaust mechanism (3) comprising an exhaust groove (32), and the exhaust groove (32) opens and closes as the fixed cover (10) moves.

6. A precision automobile bearing ring heat treatment device according to claim 5, characterized in that: It also comprises a telescopic tube (43), on which a covering cover (31) is provided, and the covering cover (31) is slidably connected to the rotating shaft (111).

7. A heat treatment method for a precision automobile bearing ring, the heat treatment method applied to the heat treatment device for a precision automobile bearing ring according to any one of claims 1 to 5 is as follows: S01, installing the bearing ring (103) in the fixed cover (10), and placing the fixed cover (10) between the heating cover (11) and the quenching cover (12); S02, the heating cover (11) and the quenching cover (12) are closed to squeeze the fixed cover (10) into the heating cover (11), and then the heating cover (11) is rotated to mobilize the heating induction coil (22) to heat along the inner wall of the bearing ring (103); S03, after the inner ring of the bearing ring (103) is heated to a predetermined temperature, the heating induction coil (22) is disengaged, and then the fixed cover (10) is moved into the cold quenching cover (12); S04. After the fixed cover (10) moves to the water splashing angle of the water storage jacket (51), the water storage jacket (51) discharges water to cool and quench the inner ring of the bearing ring (103).

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