Quenching device for bearing production

Abstract

The application relates to the technical field of bearing quenching, and particularly discloses a quenching device for bearing production, which comprises a shell, a driving assembly arranged in the shell, a three-jaw chuck arranged at the output end of the driving assembly to drive the three-jaw chuck to rotate and lift, an electromagnetic heating module and a cooling module arranged in the shell, at least three electromagnetic heating units, a sliding seat elastically and slidably arranged on the shell along the radial direction of the three-jaw chuck, a lifting seat arranged on the sliding seat, an electromagnetic coil arranged on the lifting seat, and a vertical section and a ring section of the electromagnetic coil. The application has the beneficial effect that the distance between the ring section and the inner wall of the bearing ring is the same, and the bearing ring is in a rotating state during work, so that the heating speed of different positions of the bearing ring is uniform, the bearing ring can be uniformly heated to a set temperature, the uniformity of the heating of the whole bearing ring is ensured, and the quenching quality of the product is improved.

Description

Technical Field

[0001] This invention relates to the field of bearing quenching technology, and more specifically to a quenching apparatus for bearing production. Background Technology

[0002] During the production of bearings, they generally need to undergo quenching. Quenching is a heat treatment process in which steel is heated to above the critical temperature, held at that temperature for a certain time, and then cooled at a rate greater than the critical cooling rate to obtain a non-equilibrium structure dominated by martensite (or bainite or single-phase austenite depending on the need).

[0003] Chinese Patent CN117947246B discloses a quenching device for bearing processing. This patent belongs to the field of bearing quenching technology, and specifically relates to a quenching device for bearing processing. It includes a base plate, a support seat mounted on the base plate, an intermittent rotary control assembly mounted on the support seat and the base plate, a heating enclosure assembly and a heating assembly mounted on the base plate, with the heating end of the heating assembly located at the upper end of the heating enclosure assembly. The intermittent rotary control assembly includes a gear, which is movably mounted on the base plate. Multiple sets of clamps for dividing space are provided on the upper wall of the gear, arranged in a ring with equal intervals. A slot is provided between adjacent sets of clamps. The intermittent rotary control assembly also includes drive inserts, which are movably engaged within the slots. This device preheats the bearings to be quenched, improving the preheating effect and achieving automatic feeding.

[0004] During the quenching process of existing bearings, the bearing races have arc-shaped mounting grooves that support the balls, resulting in significant structural differences in the radial cross-section of the bearing races. The wall thickness of the mounting groove is relatively thin. During electromagnetic induction heating, the heating coil usually uses the axial center of the bearing race as the energy input starting point, and the temperature extends to both sides. This can lead to excessively high temperatures in the thin-walled parts of the bearing race, uneven heating of the entire bearing race, and easy generation of thermal stress concentration, resulting in deformation, cracking, or uneven hardness of the bearing race. Summary of the Invention

[0005] This invention provides a quenching device for bearing production, aiming to solve the technical problems in the existing bearing quenching process where the heating coil usually takes the axial center of the bearing ring as the energy input starting point, and the temperature extends to both sides, which leads to excessively high temperature in the thin wall part of the bearing ring, uneven heating of the entire bearing ring, easy generation of thermal stress concentration, and resulting in deformation, cracking or uneven hardness of the bearing ring.

[0006] A quenching device for bearing production according to the present invention includes: a housing, a drive assembly disposed within the housing, the output end of the drive assembly being provided with a three-jaw chuck to drive the three-jaw chuck to rotate and lift; the housing also includes an electromagnetic heating module and a cooling module; the electromagnetic heating module includes at least three electromagnetic heating units, each electromagnetic heating unit including a sliding seat that is elastically slidably fitted to the housing along the radial direction of the three-jaw chuck; a lifting seat is provided on the sliding seat; an electromagnetic coil is provided on the lifting seat; the electromagnetic coil includes a vertical section and an annular section; the annular sections in all electromagnetic heating units are coaxial and vertically spaced apart; an abutment is provided on the moving side of the annular section; in the two electromagnetic heating units where the uppermost and lowermost annular sections are located, the lifting seat and the sliding seat are vertically slidably fitted, and the two electromagnetic heating units are connected by a transmission assembly so that the lifting seats in the two electromagnetic heating units can move towards each other; a limiting member is also provided on the electromagnetic coil where the uppermost annular section is located; when the bearing ring rises and abuts against the limiting member, the electromagnetic coil connected to the limiting member can rise.

[0007] Beneficial effects: During operation, the bearing ring is fixed on the three-jaw chuck. The jacking cylinder drives the bearing ring to rise, and the three electromagnetic coils gradually enter the inner side of the bearing ring. The upper surface of the bearing ring will abut against the limiting part. As the bearing ring rises, the jacking electromagnetic coil on the left rises, and the lifting seat on the left pushes the toothed plate on the left rises. The toothed plate drives the gear to rotate, and the gear drives the toothed plate on the right to descend, thereby causing the electromagnetic coil on the right to descend until the annular segment in the middle position corresponds to the arc-shaped mounting groove on the bearing ring. Then, the telescopic cylinder drives the sliding seat to slide, so that the three electromagnetic coils move radially along the bearing ring, so that the abutting parts on the annular segment abut against the inner wall of the bearing ring, making the distance between the annular segment and the inner wall of the bearing ring the same. Since the distance between the annular segment and the inner wall of the bearing ring is the same, and the bearing ring is rotating during operation, the heating rate of different positions of the bearing ring is consistent. The bearing ring can be heated evenly to the set temperature, ensuring the uniformity of heating of the entire bearing ring and improving the quality of product quenching.

[0008] Preferably, the transmission assembly includes a mounting base fixed to the housing, a gear rotatably mounted on the mounting base via an elastic element, guide rods fixedly connected to the housing on both sides of the mounting base, slide plates vertically slidably fitted on the guide rods, vertically arranged toothed plates on the side of the slide plates near the gear, and the toothed plates on both sides meshing with the gear, and in the two electromagnetic heating units located in the uppermost and lowermost annular segments, two lifting seats are horizontally slidably fitted with the corresponding slide plates on both sides.

[0009] Its effect is that the transmission component enables the lifting seats in the two electromagnetic heating units located in the uppermost and lowermost annular segments to move towards each other.

[0010] Preferably, the abutting member has a connecting part and an abutting part. The connecting part is arranged horizontally, one end of the connecting part is fixedly connected to the annular segment, and the other end is connected to the abutting part. The abutting part has a columnar structure, and the axis of the abutting part extends in the vertical direction.

[0011] Its effect is that the telescopic cylinders drive the sliding seats to slide, causing the three electromagnetic coils to move radially along the bearing rings, so that the abutting parts on the annular section abut against the inner wall of the bearing rings, making the distance between the annular section and the inner wall of the bearing rings the same.

[0012] Preferably, the limiting member is a horizontally arranged plate-shaped structure, and the bottom of the limiting member is rotatably fitted with a roller.

[0013] Its effect is that the roller abuts against the upper surface of the bearing ring, which reduces the friction between the two and protects the bearing ring.

[0014] Preferably, the cooling module includes a water spray ring that is vertically and elastically slidably fitted onto the housing. The water spray ring has an annular cavity inside, and a water inlet pipe communicating with the annular cavity is also provided on the water spray ring. Multiple downwardly inclined nozzles are arranged circumferentially on the inner annular surface of the water spray ring. Multiple communicating holes corresponding to the nozzles are arranged circumferentially on the bottom wall of the annular cavity inside the water spray ring, and the communicating holes connect the annular cavity and the nozzles. An adjusting ring is rotatably installed on the bottom wall of the annular cavity inside the water spray ring. The adjusting ring has multiple vertically penetrating adjusting holes along its circumference, and the adjusting holes correspond to the communicating holes. The adjusting ring has a vertically penetrating driving hole, which gradually tilts forward from left to right. An adjusting block is horizontally and elastically slidably installed at the bottom of the water spray ring. The adjusting block has a lever that passes through the driving hole. When the adjusting block drives the lever to slide, it can drive the adjusting ring to rotate, thereby changing the flow rate of the communicating hole. The lower surface of the adjusting block is also provided with an inclined section and a horizontal section.

[0015] Its effect is that it can automatically adjust the amount of water sprayed from the nozzle according to the size of the bearing ring, thereby improving the quality of bearing ring quenching.

[0016] Preferably, both the connecting hole and the adjusting hole are circular structures.

[0017] Preferably, the upper surface of the water spray ring is circumferentially fixed with a plurality of vertically arranged sliding rods, and the sliding rods are slidably engaged with the housing. A second spring is sleeved on the outside of the sliding rod, one end of the second spring is connected to the sliding rod, and the other end is connected to the housing.

[0018] Preferably, the drive assembly includes a push cylinder fixedly installed at the bottom of the housing, a horizontally arranged lifting plate fixedly installed on the telescopic part of the push cylinder, a vertically arranged drive shaft rotatably installed on the upper end face of the lifting plate, a drive motor that drives and cooperates with the drive shaft fixedly installed at the bottom of the lifting plate, and a three-jaw chuck fixed to the upper end of the drive shaft.

[0019] Preferably, the electromagnetic heating unit further includes a telescopic cylinder fixedly installed on the housing. The telescopic part of the telescopic cylinder is fixedly installed with a push plate. A first spring is provided on the push plate, and the end of the first spring away from the push plate is connected to the sliding seat.

[0020] Preferably, the housing is provided with a lower partition and an upper partition, which divide the interior of the housing into three chambers: an upper chamber, a working chamber, and a lower chamber.

[0021] The beneficial effects of the present invention using the above technical solution are as follows: During operation, the bearing ring is fixed on the three-jaw chuck, and the push cylinder drives the bearing ring to rise. The three electromagnetic coils gradually enter the inner side of the bearing ring, and the upper surface of the bearing ring abuts against the limiting part. As the bearing ring rises, the pusher on the left electromagnetic coil rises, the left lifting seat pushes the left toothed plate to rise, the toothed plate drives the gear to rotate, and the gear drives the right toothed plate to descend, thereby causing the right electromagnetic coil to descend until the annular segment in the middle position corresponds to the arc-shaped mounting groove on the bearing ring. Then, the telescopic cylinder drives the sliding seat to slide, so that the three electromagnetic coils move radially along the bearing ring, so that the abutting part on the annular segment abuts against the inner wall of the bearing ring, making the distance between the annular segment and the inner wall of the bearing ring the same. Since the distance between the annular segment and the inner wall of the bearing ring is the same, and the bearing ring is rotating during operation, the heating rate of different positions of the bearing ring is consistent. The bearing ring can be heated evenly to the set temperature, ensuring the uniformity of heating of the entire bearing ring and improving the quality of product quenching.

[0022] As the bearing ring rises, it abuts against the inclined section of the lower surface of the adjusting block, forcing the adjusting block to slide to the right until the upper surface of the bearing ring abuts against the horizontal section. The larger the diameter of the bearing ring, the greater the distance the adjusting block slides to the right. This rightward sliding of the adjusting block drives the adjusting ring to rotate via a lever, thereby changing the flow rate through the connecting hole and adjusting the water spray volume of the nozzle. Smaller diameter bearing rings result in a shorter rightward sliding distance for the adjusting block, a larger flow rate through the connecting hole, and a larger water spray volume. Larger diameter bearing rings result in a longer rightward sliding distance for the adjusting block, a smaller flow rate through the connecting hole, and a smaller water spray volume. The system can automatically adjust the water spray volume of the nozzle based on the size of the bearing ring. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0025] Figure 3 This is an exploded view of the sliding seat and water spray ring of the present invention.

[0026] Figure 4 This is a schematic diagram of the sliding seat of the present invention.

[0027] Figure 5 This is an exploded view of the sliding seat, lifting seat, and sliding plate of the present invention.

[0028] Figure 6 This is a cross-sectional view of the water spray ring of the present invention.

[0029] Figure 7 This is an exploded view of the water spray ring and the regulating ring of the present invention.

[0030] Figure 8 This is a top view of the adjusting ring of the present invention.

[0031] Figure label:

[0032] 10. Housing; 11. Lower partition; 12. Upper partition; 13. Protective door; 14. Bearing ring; 20. Push cylinder; 21. Lifting plate; 22. Lifting slide column; 23. Drive shaft; 24. Drive motor; 25. Three-jaw chuck; 30. Sliding seat; 31. Telescopic cylinder; 32. Push plate; 33. First spring; 40. Lifting seat; 41. Electromagnetic coil; 42. Vertical section; 43. Annular section; 44. Abutment part; 45. Connection 46. ​​Abutment part; 50. Mounting base; 51. Gear; 52. Guide rod; 53. Slide plate; 54. Tooth plate; 55. Limiting component; 60. Water spray ring; 61. Slide rod; 62. Second spring; 63. Water inlet pipe; 64. Nozzle; 65. Connecting hole; 70. Adjusting ring; 71. Adjusting hole; 72. Drive part; 73. Drive hole; 80. Adjusting block; 81. Third spring; 82. Lever; 83. Inclined section; 84. Horizontal section. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] like Figures 1 to 8 As shown, a specific embodiment of the quenching device for bearing production of the present invention is illustrated. For ease of understanding, the bearing ring 14 is taken as the application scenario of the present invention. The quenching device for bearing production includes a housing 10, a bearing module, an electromagnetic heating module, and a cooling module.

[0035] The load-bearing module, electromagnetic heating module, and cooling module are all located inside the housing 10. The load-bearing module is used to install and fix the bearing ring 14, and can also drive the bearing ring 14 to lift, rotate, and move. The electromagnetic heating module is used to heat the bearing ring 14, and the cooling module is used to cool the bearing ring 14.

[0036] like Figure 1 and Figure 2 As shown, the housing 10 is provided with a lower partition 11 and an upper partition 12, both of which are horizontally arranged and spaced apart vertically. The lower partition 11 and the upper partition 12 divide the interior of the housing 10 into three chambers from top to bottom: an upper chamber, a working chamber, and a lower chamber. A protective door 13 is installed on the front side of the housing 10 at a position corresponding to the working chamber. The protective door 13 facilitates the installation or removal of the bearing race 14.

[0037] It is particularly important to note that the walls of the working chamber are made of transparent material, such as glass, so that workers can easily observe the quenching process of the bearing rings 14 inside the working chamber.

[0038] like Figure 2 As shown, the load-bearing module includes a push cylinder 20, a lifting plate 21, a lifting slide column 22, a drive shaft 23, a drive motor 24, and a three-jaw chuck 25.

[0039] A push cylinder 20 is fixedly installed at the bottom of the lower chamber. The axis of the telescopic part of the push cylinder 20 extends vertically. A horizontally arranged lifting plate 21 is fixedly installed on the telescopic part of the push cylinder 20. The push cylinder 20 can drive the lifting plate 21 to move up and down. A lifting slide column 22 is fixedly installed at the bottom of the lower partition 11. The axis of the lifting slide column 22 extends vertically. The lifting plate 21 and the lifting slide column 22 slide vertically together. The lifting slide column 22 can stabilize the lifting plate 21.

[0040] A drive shaft 23 is rotatably mounted on the upper end face of the lifting plate 21. The axis of the drive shaft 23 extends vertically. A drive motor 24 is fixedly mounted on the bottom of the lifting plate 21. A drive wheel is mounted on the output end of the drive motor 24. A driven wheel is fixedly mounted on the drive shaft 23. The drive wheel and the driven wheel are connected by a transmission belt, so that the drive motor 24 can drive the drive shaft 23 to rotate.

[0041] The upper end of the drive shaft 23 extends through the upper surface of the lower partition 11 into the interior of the working chamber. A three-jaw chuck 25 is fixedly mounted on the upper end of the drive shaft 23. The three-jaw chuck 25 rotates along a vertically extending axis and is used to fix the bearing ring 14. When the push cylinder 20 raises the lifting plate 21, it can also raise the three-jaw chuck 25. When the drive motor 24 drives the drive shaft 23 to rotate, it can also rotate the three-jaw chuck 25.

[0042] like Figure 2 , Figure 3 , Figure 4 as well as Figure 5As shown, the electromagnetic heating module includes three electromagnetic heating units, all of which are mounted on the upper partition 12 and distributed circumferentially along the three-jaw chuck 25. Each of the three electromagnetic heating units can slide radially along the three-jaw chuck 25. Two of the electromagnetic heating units are spaced apart in the left-right direction, and the third electromagnetic heating unit is located behind the two units arranged in the left-right direction. The two units arranged in the left-right direction can also slide vertically between each other. A transmission assembly is provided between the two units arranged in the left-right direction to enable them to move towards each other.

[0043] Each electromagnetic heating unit includes a sliding seat 30, a telescopic cylinder 31, a push plate 32, a first spring 33, a lifting seat 40, an electromagnetic coil 41, a vertical section 42, an annular section 43, a contact member 44, a connecting part 45, and a contact part 46.

[0044] Telescopic cylinder 31 is fixedly installed on the upper surface of upper partition 12. Push plate 32 is fixedly installed on the telescopic part of telescopic cylinder 31. First spring 33 is fixedly connected to push plate 32. Sliding seat 30 is fixedly installed at the end of first spring 33 away from push plate 32. A vertical clearance hole (not shown in the figure) is opened on upper partition 12 at the position corresponding to sliding seat 30. Sliding seat 30 is slidably fitted in clearance hole, and sliding seat 30 can slide radially along three-jaw chuck 25 in clearance hole. That is, telescopic cylinder 31 can push sliding seat 30 to move radially along three-jaw chuck 25.

[0045] A vertically arranged lifting seat 40 is installed on the sliding seat 30. In this embodiment, the lifting seats 40 of the two electromagnetic heating units arranged in the left and right directions are vertically slidably engaged on the sliding seat 30, and the lifting seat 40 of the electromagnetic heating unit on the rear side is fixedly installed on the sliding seat 30.

[0046] An electromagnetic coil 41 is mounted on the lifting base 40. The electromagnetic coil 41 has a vertical section 42 and an annular section 43. The vertical section 42 of the electromagnetic coil 41 is fixedly connected to the lifting base 40. The vertical section 42 is arranged vertically, and the annular section 43 is arranged horizontally. The structure of the electromagnetic coil 41 is prior art and will not be described in detail here. The annular sections 43 of the electromagnetic coils 41 in the three electromagnetic heating units are arranged at intervals along the vertical direction, and all annular sections 43 are coaxially arranged.

[0047] In the two electromagnetic heating units arranged in the left and right directions, the annular segment 43 of the electromagnetic coil 41 is located at the top and bottom respectively, while in the rear electromagnetic heating unit, the annular segment 43 of the electromagnetic coil 41 is located in the middle position (e.g., Figure 4 (As shown).

[0048] An annular segment 43 has an abutment 44 on its moving side. In this embodiment, the abutment 44 has a connecting portion 45 and an abutment portion 46. The connecting portion 45 is horizontally arranged, with one end fixedly connected to the annular segment 43 and the other end connected to the abutment portion 46. The abutment portion 46 has a columnar structure, and its axis extends vertically. In other embodiments, the abutment portion 46 can also be a roller or ball structure. The abutment portion 46 is used to abut against the inner wall of the bearing ring 14 to position the electromagnetic coil 41. The roller or ball structure of the abutment portion 46 can reduce friction between it and the inner wall of the bearing ring 14.

[0049] like Figure 2 , Figure 4 and Figure 5 As shown, the transmission assembly includes a mounting base 50, a gear 51, a guide rod 52, a slide plate 53, and a toothed plate 54.

[0050] Mounting base 50 is fixedly mounted on the upper surface of upper partition plate 12, and the mounting base 50 is located in the middle position of two electromagnetic heating units arranged in the left and right directions. A gear 51 is rotatably mounted on the mounting base 50 via a rotating shaft. A coil spring is provided on the rotating shaft. One end of the coil spring is connected to the gear 51, and the other end is connected to the mounting base 50. The coil spring can provide elastic force for the gear 51 to reset. The gear 51 can rotate along the axis extending in the front and back directions.

[0051] Guide rods 52 are provided on both the left and right sides of the mounting base 50. The axis of the guide rods 52 extends vertically. The guide rods 52 are fixedly installed on the upper surface of the upper partition plate 12. Slide plates 53 are vertically slidably fitted on the guide rods 52 on both the left and right sides. A vertically arranged toothed plate 54 is provided on the side of the slide plate 53 near the gear 51, and the toothed plates 54 on both sides mesh with the gear 51.

[0052] The lifting seats 40 in the two electromagnetic heating units arranged in the left and right directions respectively slide horizontally with the corresponding sliding plates 53 on the left and right sides. That is, the lifting seats 40 can slide horizontally on the sliding plates 53 in the left and right directions. In this embodiment, the sliding plates 53 are provided with sliding grooves, and the upper end of the lifting seats 40 slides in the sliding grooves on the sliding plates 53.

[0053] In the two electromagnetic heating units arranged in the left and right directions, a limiting member 55 is fixedly installed on the vertical section 42 of the electromagnetic heating unit located on the left. The limiting member 55 is a horizontally arranged plate-shaped structure, and the limiting member 55 is located near the lower end of the vertical section 42.

[0054] When the jacking cylinder 20 drives the bearing ring 14 to rise, the upper surface of the bearing ring 14 will abut against the limiting member 55. As the bearing ring 14 rises, the electromagnetic coil 41 on the left side is pushed up, and the lifting seat 40 on the left side pushes the toothed plate 54 on the left side to rise. The toothed plate 54 drives the gear 51 to rotate, and the gear 51 drives the toothed plate 54 on the right side to fall, thereby causing the electromagnetic coil 41 on the right side to fall.

[0055] In other embodiments, a roller may be provided at the bottom of the limiting member 55, so that when the roller abuts against the bearing ring 14, the friction between the limiting member 55 and the bearing ring 14 can be reduced as the bearing ring 14 rotates.

[0056] During operation, the bearing ring 14 is fixed on the three-jaw chuck 25. The push cylinder 20 drives the bearing ring 14 to rise, and the three electromagnetic coils 41 gradually enter the inner side of the bearing ring 14. The upper surface of the bearing ring 14 will abut against the limiting member 55. As the bearing ring 14 rises, the pusher on the left electromagnetic coil 41 rises, and the left lifting seat 40 pushes the left gear plate 54 to rise. The gear plate 54 drives the gear 51 to rotate, and the gear 51 drives the right gear plate 54 to fall, thereby causing the right electromagnetic coil 41 to fall until the annular segment 43 in the middle position corresponds to the arc-shaped mounting groove on the bearing ring 14. That is, the annular segment 43 in the middle position is close to the middle position of the bearing ring 14 and corresponds to the arc-shaped mounting groove. The upper and lower annular segments 43 are close to the two ends of the bearing ring 14, respectively. Then, the telescopic cylinders 31 drive the sliding seats 30 to slide, causing the three electromagnetic coils 41 to move radially along the bearing ring 14. This causes the abutment pieces 44 on the annular segment 43 to abut against the inner wall of the bearing ring 14, and the abutment piece 44 on the middle annular segment 43 to abut against the arc-shaped mounting groove on the bearing ring 14, thus ensuring that the distance between the annular segment 43 and the inner wall of the bearing ring 14 is the same. Then, the drive motor 24 drives the bearing ring 14 to start rotating. At the same time, the annular segment 43 starts heating. Since the distance between the annular segment 43 and the inner wall of the bearing ring 14 is the same, the heating rate at different positions of the bearing ring 14 is consistent, allowing the bearing ring 14 to be uniformly heated to the set temperature.

[0057] The first spring 33 provides a certain buffering force to the abutment 44, ensuring that the abutment 44 remains in contact with the inner wall of the bearing ring 14 during its rotation. After the bearing ring 14 is machined, when it descends, the coil spring between the gear 51 and the mounting base 50 helps the three electromagnetic coils 41 to reset.

[0058] In this embodiment, the electromagnetic coil 41 is mainly used to quench the inner wall of the bearing ring 14. When the outer wall of the bearing ring 14 needs to be quenched, the working principle is the same, except that the diameter of the annular segment 43 needs to be larger than the diameter of the bearing ring 14. When the bearing ring 14 rises, the annular segment 43 is fitted on the outer side of the bearing ring 14. At the same time, the abutment 44 is set on the inner side of the annular segment 43, and the working principle is the same as the above process.

[0059] like Figure 2 , Figure 3 , Figure 6 , Figure 7 as well as Figure 8 As shown, the cooling module includes a water spray ring 60, a slide bar 61, a second spring 62, a water inlet pipe 63, a nozzle 64, an adjusting ring 70, a drive unit 72, an adjusting block 80, a third spring 81, a lever 82, an inclined section 83, and a horizontal section 84.

[0060] A water spray ring 60 is installed in the working chamber. The water spray ring 60 has a ring structure, and four sliding rods 61 are fixedly installed on the upper surface of the water spray ring 60. The sliding rods 61 are evenly distributed around the circumference of the water spray ring 60, and the axis of the sliding rods 61 is arranged in the vertical direction. The upper end of the sliding rod 61 passes through the upper partition plate 12, and the sliding rod 61 slides in contact with the upper partition plate 12. A second spring 62 is sleeved on the outside of the sliding rod 61, and one end of the second spring 62 is connected to the sliding rod 61, and the other end of the second spring 62 is connected to the upper partition plate 12, so that the second spring 62 can provide elastic force for the sliding rod 61 to return to its original position. The water spray ring 60 is coaxially arranged with the three-jaw chuck 25, and the water spray ring 60 is located outside the electromagnetic coil 41.

[0061] The water spray ring 60 has an internal cavity, and the water spray ring 60 is also provided with a water inlet pipe 63 that communicates with the cavity. The water inlet pipe 63 is connected to a water supply source, and water enters the cavity through the water inlet pipe 63.

[0062] The inner ring of the water spray ring 60 has multiple nozzles 64 arranged circumferentially near the bottom, and the nozzles 64 are inclined downward. The bottom wall of the ring cavity inside the water spray ring 60 has multiple connecting holes 65 arranged circumferentially. The connecting holes 65 correspond one-to-one with the nozzles 64. The connecting holes 65 connect the ring cavity and the nozzles 64. The connecting holes 65 are circular holes on the bottom wall of the ring cavity.

[0063] An adjusting ring 70 is rotatably mounted on the bottom wall of the annular cavity within the spray ring 60. The adjusting ring 70 has multiple vertically penetrating adjusting holes 71 along its circumference. In this embodiment, the adjusting holes 71 are circular, and each adjusting hole 71 corresponds one-to-one with a connecting hole 65. The adjusting ring 70 has a driving part 72, and the spray ring 60 has a through hole corresponding to the driving part 72, through which the driving part 72 extends to the outside of the spray ring 60. The driving part 72 has a vertically penetrating driving hole 73, which is inclined, meaning it gradually tilts forward from left to right.

[0064] An adjusting block 80 is slidably installed at the bottom right side of the water spray ring 60. The adjusting block 80 slides in the left and right direction. A third spring 81 is also provided on the adjusting block 80. One end of the third spring 81 is connected to the adjusting block 80 and the other end is connected to the water spray ring 60, so that the third spring 81 can provide elastic force for the adjusting block 80 to reset.

[0065] A lever 82 is provided on the upper surface of the adjusting block 80. The upper end of the lever 82 is inserted into the drive hole 73. When the adjusting block 80 slides in the left and right direction, the lever 82 can drive the adjusting ring 70 to rotate, thereby changing the flow rate of the connecting hole 65 and adjusting the water spray volume of the nozzle 64.

[0066] An inclined section 83 and a horizontal section 84 are provided on the lower surface of the adjusting block 80 near the left end. The horizontal section 84 is located to the left of the inclined section 83 and the two are connected. The inclined section 83 gradually tilts downward from left to right.

[0067] When the bearing ring 14 is cooled down after heating, the smaller and thinner the bearing ring 14, the faster it needs to be cooled, while the larger and thicker the bearing ring 14, the slower the spraying speed needs to be reduced. This ensures that the smaller bearing ring 14 is cooled quickly to avoid overheating, while the larger bearing ring 14 is cooled slowly to reduce the risk of cracking.

[0068] During operation, the bearing ring 14 rises upwards, abutting against the inclined section 83 on the lower surface of the adjusting block 80. This forces the adjusting block 80 to slide to the right until the upper surface of the bearing ring 14 abuts against the horizontal section 84. Therefore, the larger the diameter of the bearing ring 14, the longer the distance the adjusting block 80 slides to the right. The sliding of the adjusting block 80 to the right drives the adjusting ring 70 to rotate via the lever 82, thereby changing the flow rate of the connecting hole 65 and adjusting the water spray volume of the nozzle 64. That is, for a smaller diameter bearing ring 14, the distance the adjusting block 80 slides to the right is smaller, the flow rate of the connecting hole 65 is larger, and the water spray volume of the nozzle 64 is also larger. For a larger diameter bearing ring 14, the distance the adjusting block 80 slides to the right is longer, the flow rate of the connecting hole 65 is smaller, and the water spray volume of the nozzle 64 is also smaller. The water spray volume of the nozzle 64 can be automatically adjusted according to the size of the bearing ring 14.

[0069] As the bearing ring 14 continues to rise, the water spray ring 60 will drive the slide bar 61 to rise, and the second spring 62 will be stretched until the bearing ring 14 rises to the appropriate position. When the bearing ring 14 is lowered after processing, the second spring 62 can drive the water spray ring 60 to fall and reset.

[0070] The working principle of this invention is as follows: During operation, the bearing ring 14 is fixed on the three-jaw chuck 25. The push cylinder 20 drives the bearing ring 14 to rise, and the three electromagnetic coils 41 gradually enter the inner side of the bearing ring 14. The upper surface of the bearing ring 14 will abut against the limiting member 55. As the bearing ring 14 rises, the pusher on the left electromagnetic coil 41 rises, and the left lifting seat 40 pushes the left toothed plate 54 to rise. The toothed plate 54 drives the gear 51 to rotate, and the gear 51 drives the right toothed plate 54 to descend, thereby causing the right electromagnetic coil 41 to descend until the annular segment 43 in the middle position corresponds to the arc-shaped mounting groove on the bearing ring 14. That is, the annular segment 43 in the middle position is close to the middle position of the bearing ring 14 and corresponds to the arc-shaped mounting groove. The upper and lower annular segments 43 are close to the two ends of the bearing ring 14, respectively. Then, the telescopic cylinders 31 drive the sliding seats 30 to slide, causing the three electromagnetic coils 41 to move radially along the bearing ring 14. This causes the abutment pieces 44 on the annular segment 43 to abut against the inner wall of the bearing ring 14, and the abutment pieces 44 on the middle annular segment 43 to abut against the arc-shaped mounting groove on the bearing ring 14, thus ensuring that the distance between the annular segment 43 and the inner wall of the bearing ring 14 is the same. Then, the drive motor 24 drives the bearing ring 14 to start rotating, and at the same time, the annular segment 43 starts heating. Since the distance between the annular segment 43 and the inner wall of the bearing ring 14 is the same, the heating rate at different positions of the bearing ring 14 is consistent, allowing the bearing ring 14 to be uniformly heated to the set temperature. When the bearing ring 14 needs to be cooled after heating is complete, water enters the annular cavity through the water inlet pipe 63 and is then sprayed onto the inner wall of the bearing ring 14 through the nozzle 64.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A quenching apparatus for bearing production, comprising: The shell, the driving assembly arranged in the shell, and the three-jaw chuck arranged at the output end of the driving assembly to drive the three-jaw chuck to rotate and lift, characterized in that the shell is further provided with an electromagnetic heating module and a cooling module. The electromagnetic heating module comprises at least three electromagnetic heating units, each of which comprises a sliding seat elastically sliding along the radial direction of the three-jaw chuck and arranged in the shell, a lifting seat arranged on the sliding seat, and an electromagnetic coil arranged on the lifting seat, wherein the electromagnetic coil comprises a vertical section and an annular section, the annular sections of all the electromagnetic heating units are coaxially and vertically spaced apart, and the moving side of the annular section is provided with an abutting piece; in the two electromagnetic heating units in which the uppermost and lowermost annular sections are located, the lifting seat and the sliding seat are vertically slidingly connected, and the two electromagnetic heating units are connected through a transmission assembly, so that the lifting seats in the two electromagnetic heating units can move towards each other, and a limiting piece is further arranged on the electromagnetic coil in which the uppermost annular section is located, and when the bearing ring rises and abuts against the limiting piece, the electromagnetic coil connected with the limiting piece can be lifted. The transmission assembly comprises a mounting seat fixedly arranged on the shell, a gear rotatably arranged on the mounting seat through an elastic piece, guide rods fixedly connected with the shell and arranged on both sides of the mounting seat, sliding plates vertically slidingly arranged on the guide rods, and toothed plates vertically arranged on one side of the sliding plates close to the gear and engaged with the gear. The cooling module comprises a water spraying ring vertically and elastically sliding in the shell, the water spraying ring has a ring cavity inside, the water spraying ring is further provided with a water inlet pipe communicated with the ring cavity, a plurality of downwardly inclined spray heads are arranged on the inner circumferential surface of the water spraying ring, a plurality of communication holes corresponding to the spray heads are circumferentially arranged on the bottom wall of the ring cavity, the communication holes communicate the ring cavity with the spray heads, an adjusting ring is rotatably arranged on the bottom wall of the ring cavity, a plurality of adjusting holes penetrating the adjusting ring upward and downward are circumferentially arranged on the adjusting ring, the adjusting holes correspond to the communication holes one by one, a driving hole penetrating the adjusting ring upward and downward is arranged on the adjusting ring, the driving hole gradually inclines forward from left to right, an adjusting block is horizontally and elastically slidingly arranged at the bottom of the water spraying ring, a lever is arranged on the adjusting block and penetrates into the driving hole, when the adjusting block drives the lever to slide, the adjusting ring can be driven to rotate to change the flow rate of the communication holes, and the lower surface of the adjusting block is further provided with an inclined section and a horizontal section. The driving assembly comprises a push air cylinder fixedly arranged at the bottom of the shell, a lifting plate horizontally arranged on the extension part of the push air cylinder, a driving shaft vertically arranged on the upper end surface of the lifting plate, a driving motor drivingly connected with the driving shaft and fixedly arranged at the bottom of the lifting plate, and the three-jaw chuck fixedly arranged on the upper end of the driving shaft. The electromagnetic heating unit further comprises a telescopic air cylinder fixedly arranged on the shell, a push plate fixedly arranged on the extension part of the telescopic air cylinder, and a first spring arranged on the push plate and connected with the sliding seat at the end away from the push plate.

2. The quenching device for bearing production according to claim 1, characterized in that, The abutting piece has a connecting part and an abutting part, the connecting part is horizontally arranged, one end of the connecting part is fixedly connected with the annular section, the other end of the connecting part is connected with the abutting part, the abutting part is in a columnar structure, and the axis of the abutting part extends along the vertical direction.

3. The quenching device for bearing production according to claim 1, characterized in that, The limiting piece is a horizontally arranged plate-shaped structure, and a roller is rotationally matched with the bottom of the limiting piece.

4. The quenching device for bearing production according to claim 1, characterized in that, The communication hole and the adjusting hole are circular structures.

5. The quenching device for bearing production according to claim 1, characterized in that, A plurality of vertically arranged sliding rods are fixedly arranged on the upper surface of the water spraying ring, and the sliding rods are slidingly matched with the shell.

6. The quenching device for bearing production according to claim 1, characterized in that, The shell is provided with a lower partition plate and an upper partition plate, and the lower partition plate and the upper partition plate divide the shell into an upper chamber, a working chamber and a lower chamber.

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