Quenching device for machining of a ring gear

Abstract

The application belongs to the technical field of quenching, and particularly relates to a quenching device for gear ring machining, which comprises a water tank, a supporting mechanism, an induction heating ring and a cable, the supporting mechanism is arranged at the bottom of the water tank, one side of the induction heating ring is fixedly connected with a supporting rod, the material of the supporting rod is the same as that of the induction heating ring, the supporting rod is fixed at one side of an electromagnetic heating device and electrically connected with the electromagnetic heating device through the cable, an oscillating circulating mechanism is arranged in the water tank, the oscillating circulating mechanism comprises an annular base, a transmission member, two rack seats and two oscillating plates, and a connecting piece is arranged between the annular base and the supporting mechanism. The application can circulate the cooling water, thereby improving the cooling effect of the gear ring, one side of the oscillating plate is arranged to be inclined, and the water at the bottom of the water tank can move upward through the inclined surface of the oscillating plate, thereby facilitating the stirring treatment of the inside of the water tank.

Description

Technical Field

[0001] This invention relates to the field of quenching, and more particularly to a quenching apparatus for gear ring machining. Background Technology

[0002] Gear rings, as a commonly used transmission component in mechanical structures, are widely used in machine tools, automobiles and other fields. Their processing technology is generally as follows: blank forging → blank inspection → quenching and tempering → lathe machining → gear hobbing → drilling → quenching treatment → high temperature tempering → flaw detection → inspection → oiling and packaging.

[0003] A search revealed Chinese patent application CN112029970A, which discloses a quenching system for gear rings, relating to the field of gear ring processing technology. The system includes a worktable, a rotary drum, a water tank, fixed fixtures, a lifting mechanism, and a rotating mechanism. A sealing mechanism is installed at the bottom of the water tank, and a support frame is installed on one side of the worktable. A support plate is provided on the top of the support frame, and a guide block that cooperates with the sealing mechanism is located on the bottom surface of the support plate. The guide block is positioned between two adjacent water tanks. During the process of the water tank rotating 90 degrees to the next position, the guide block can open the sealing mechanism to drain the cooling water from the water tank. This invention, by setting up a lifting mechanism and a rotating mechanism, enables the water tank to rotate 90 degrees to the next workstation while heating the product, thus completing the water tank switching. In this way, while meeting the quenching efficiency requirements, it can further reduce the adverse effects of increased cooling water temperature on the internal structure and mechanical properties of the gear ring.

[0004] During the quenching of gear rings, the quenched gear rings are placed in a water tank to cool them. In existing devices, to avoid raising the temperature of the cooling water, the initially cooled gear rings are placed in another water tank to improve the cooling effect. However, when the gear rings are taken out of the first water tank, the surface temperature has decreased, but the core is still relatively hot. When they are placed in the second water tank, the temperature difference between the surface and the core is large, and the thermal stress and structural stress are superimposed. For high-carbon alloy steel or gears with sharp roots, this may cause cracks. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A quenching device for gear ring machining includes a water tank, a support mechanism, an induction heating coil, and a cable. The support mechanism is located at the bottom of the water tank. A support rod, made of the same material as the induction heating coil, is fixedly connected to one side of the induction heating coil. The support rod is fixed to one side of an electromagnetic heating device and electrically connected to the electromagnetic heating device via the cable. A swing circulation mechanism is installed inside the water tank. The swing circulation mechanism includes an annular base, a transmission component, two rack seats, and two swing plates. A connecting component is provided between the annular base and the support mechanism. An annular groove is formed at the bottom of the water tank, and a sliding contact is slidably connected to the inner wall of the annular groove. The ring, the slip ring is fixedly connected to the annular base, and the water tank has horizontal sliding grooves on both sides, with sliders slidably connected inside. The rack seat is fixedly connected to one side of the slider, and a connecting shaft is fixedly connected between the rack seat and the swing plate. A return spring is fixedly connected between the swing plate and the water tank. One side of the swing plate is set as an inclined surface. The transmission component consists of a first rack, a second rack, and a third rack. The first rack is fixedly connected to the side wall of the annular base and is arc-shaped. The second and third racks are respectively fixed to one side of the two rack seats and are staggered on both sides of the annular base.

[0006] Preferably, the support mechanism includes a sealing cover, a motor, a turntable, a hydraulic cylinder, a connecting rod, and a support assembly. The sealing cover is fixed inside the water tank, and an opening is provided at the top of the sealing cover. The opening is rotatably connected to the turntable via a bearing. The motor is fixed inside the sealing cover, and one end of it is fixedly connected to the turntable. The hydraulic cylinder is fixed on the turntable, and its top is fixedly connected to the connecting rod. The support assembly is located at the top of the connecting rod.

[0007] Preferably, the support assembly includes a support, multiple support plates, and multiple fixing components. The support is fixed to the connecting rod, the multiple support plates are welded at equal intervals to the outer circumference of the support, and the fixing components are disposed on the support plates.

[0008] Preferably, the fixing assembly includes a connecting seat, an inner wall clamp, and a fastening bolt. The connecting seat is fixed to the support plate. The top of the support plate has a positioning groove. A positioning block is slidably connected to the inner wall of the positioning groove. The positioning block is fixedly connected to the inner wall clamp. One side of the connecting seat has a threaded hole that matches the fastening bolt. The fastening bolt is threadedly connected to the threaded hole. One side of the inner wall clamp is set as an arc surface, and multiple anti-slip ridges are provided on one side.

[0009] Preferably, a spray smoke removal mechanism is provided on one side of the support mechanism. The spray smoke removal mechanism includes a spray assembly, two side plates, an annular slide rail, two overflow plates, a sliding plate, and a connecting pipe. The two overflow plates are fixed on both sides of the water tank, and the two side plates are fixed on the two overflow plates. The annular slide rail is fixedly sleeved on the spray assembly, and the sliding plate is slidably connected to both sides of the annular slide rail, with one end of it fixedly connected to the side plate.

[0010] Preferably, the spray assembly includes an annular guide tube and multiple spray heads, the annular slide rail is sleeved on the annular guide tube, and the multiple spray heads are arranged at equal distances and inclined downwards inside the annular guide tube.

[0011] Preferably, the connector includes a sleeve, a pull rod, and a piston. The sleeve is fixed on an annular base, the piston is slidably connected inside the sleeve, and its top is bonded to the pull rod. A connecting plate is welded to the outer circumference of the connecting rod, and the connecting plate is fixedly connected to the pull rod.

[0012] Preferably, a water inlet is provided on one side of the sleeve near the bottom, and a one-way water inlet valve is provided on one side of the water inlet. The annular guide tube and the sleeve are connected by a connecting pipe, which is made of rigid metal.

[0013] Preferably, the first rack alternately meshes with the second rack and the third rack for transmission, and the two swing plates move in opposite directions in the horizontal direction.

[0014] The beneficial effects of this invention are as follows: 1. This invention utilizes a swing-loop mechanism. During the quenching process of the gear ring, the gear ring is fixed to a support mechanism. After fixing, the support mechanism moves the gear ring upward, placing it within an induction heating coil. An electromagnetic heating device then heats the induction heating coil, quenching the gear ring. After quenching, the support mechanism moves the gear ring downward, placing it in a water tank for cooling. During this process, the support mechanism rotates the gear ring, which in turn rotates the annular base via a connector. This rotation, in turn, rotates the first rack. When the first rack meshes with the second rack, the second rack moves the rack seat and connecting shaft to one side, causing the swing plate to move to one side within the water tank. This swinging motion of the swing plate displaces the heated water around the gear ring to one side, removing the unheated water from the outside. The water is drawn to the periphery of the gear ring. As the annular base continues to rotate, the meshing between the first and second racks disappears, and the swing plate is reset by the return spring. As the annular base continues to rotate, the first rack meshes with the third rack, which in turn moves another swing plate. The alternating swing of the two swing plates circulates the cooling water, thereby improving the cooling effect of the gear ring. At the same time, the swing plate is tilted on one side, so when the swing plate moves, the water at the bottom of the tank moves upward through the inclined surface of the swing plate, which facilitates the stirring of the water inside the tank. This stirs the water at the bottom of the tank to the top, preventing the water temperature from rising during the cooling process after quenching, which would cause inconsistent water temperatures at different parts of the gear ring (such as the tooth tip, tooth root, and end face). This difference in cooling rate increases thermal and structural stress, leading to excessive ellipticity and taper of the gear ring, or even cracks. 2. This invention, through its swing circulation mechanism and spray fume removal mechanism, allows the support mechanism to move the gear ring upwards during quenching. Simultaneously, the piston slides upwards inside the sleeve under the action of the pull rod, drawing cooling water into the sleeve. Conversely, during cooling, the support mechanism moves the gear ring downwards, and the connecting rod moves the connecting plate downwards. As the connecting plate moves downwards, the pull rod slides downwards inside the sleeve, allowing the cooling water inside the sleeve to be transported to the annular conduit via the connecting pipe and sprayed out through multiple spray nozzles. Upon contact with the cooling water, the quenched gear ring generates a large amount of fumes, which pose a health threat to workers. When the water sprayed from the nozzles comes into contact with the fumes, the water mist adsorbs oil mist and solid particles, causing them to settle. The water mist also prevents the fumes from spreading. Furthermore, the evaporation of water carries away a large amount of heat, reducing the fumes temperature. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a quenching device for gear ring machining proposed in this invention; Figure 2 This is a cross-sectional schematic diagram of a quenching device for gear ring machining proposed in this invention. Figure 3 This is a schematic diagram of the support mechanism structure of a quenching device for gear ring machining proposed in this invention. Figure 4 This is a schematic diagram of the support component structure of a quenching device for gear ring machining proposed in this invention. Figure 5 for Figure 4 The structural diagram at point A is presented in the text; Figure 6 This is a schematic diagram of the spray fume removal mechanism of a quenching device for gear ring machining proposed in this invention. Figure 7 This is a schematic diagram of the spray assembly structure of a quenching device for gear ring machining proposed in this invention. Figure 8 This is a partial structural schematic diagram of a quenching device for gear ring machining proposed in this invention; Figure 9 This is a schematic diagram of the swing circulation mechanism of a quenching device for gear ring machining proposed in this invention. Figure 10 This is a schematic diagram of the transmission component structure of a quenching device for gear ring machining proposed in this invention.

[0016] In the attached diagram: 1. Water tank; 2. Overflow preventer; 3. Induction heating coil; 4. Support rod; 5. Cable; 6. Support mechanism; 7. Spray smoke removal mechanism; 8. Swinging circulation mechanism; 9. Sealing cover; 10. Motor; 11. Hydraulic cylinder; 12. Connecting rod; 13. Support assembly; 14. Support; 15. Support plate; 16. Positioning groove; 17. Connecting seat; 18. Inner wall clamp; 19. Fastening bolt; 20. Side plate; 21. Annular guide tube; 2 2. Connecting plate; 23. Annular base; 24. Slip ring; 25. Sleeve; 26. Pull rod; 27. Connecting pipe; 28. Annular slide rail; 29. ​​Slide plate; 30. Spray head; 31. Piston; 32. Water inlet end; 33. One-way water inlet valve; 34. Transmission component; 35. Slider; 36. Rack seat; 37. Connecting shaft; 38. Swing plate; 39. Return spring; 40. First rack; 41. Second rack; 42. Third rack. Detailed Implementation

[0017] Example 1, referring to Figures 1-10A quenching device for gear ring processing includes a water tank 1, a support mechanism 6, an induction heating coil 3, and a cable 5. The support mechanism 6 is located at the bottom of the water tank 1. A support rod 4 is bolted to one side of the induction heating coil 3. The support rod 4 is made of the same material as the induction heating coil 3. The support rod 4 is fixed to one side of an electromagnetic heating device by bolts and electrically connected to the electromagnetic heating device through the cable 5. It is used to energize the induction heating coil 3 and quench the gear ring. The water tank 1 is equipped with a swing circulation mechanism 8 to realize the circulation of cooling water in the water tank and improve the cooling effect on the gear ring. The oscillating circulation mechanism 8 includes an annular base 23, a transmission component 34, two rack seats 36, and two oscillating plates 38. A connecting component is provided between the annular base 23 and the support mechanism 6. An annular groove is provided at the bottom of the water tank 1, and a sliding ring 24 is slidably connected to the inner wall of the annular groove. The sliding ring 24 is fixedly connected to the annular base 23. Horizontal grooves are provided on opposite sides of the water tank 1, and sliders 35 are slidably connected inside them. The rack seats 36 are fixed to one side of the rack seat 36 by bolts. There is a communication channel between the rack seats 36 and the oscillating plates 38. A connecting shaft 37 is bolted to the swing plate 38 and a return spring 39 is welded between the swing plate 38 and the water tank 1. One side of the swing plate 38 is set as an inclined surface. The transmission component 34 is composed of a first rack 40, a second rack 41 and a third rack 42. The first rack 40 is bolted to the side wall of the annular base 23. The first rack 40 is arc-shaped. The second rack 41 and the third rack 42 are respectively fixed to one side of the two rack seats 36. The second rack 41 and the third rack 42 are staggered on both sides of the annular base 23.

[0018] During the quenching process of the gear ring, the gear ring is fixed to the support mechanism 6. After fixing, the support mechanism 6 drives the gear ring to move upward, so that the gear ring is located inside the induction heating coil 3. At this time, the induction heating coil 3 is heated by the electromagnetic heating device, so that the induction heating coil 3 quenches the gear ring. After quenching, the support mechanism 6 drives the gear ring to move downward, so that the quenched gear ring is placed inside the water tank 1 for cooling. During this process, the support mechanism 6 drives the gear ring to rotate. While the gear ring is rotating, it drives the annular base 23 to rotate through the connecting piece. While the annular base 23 is rotating, it drives the first rack 40 to rotate. When the first rack 40 is rotating and meshes with the second rack 41, the second rack 41 will drive the rack seat 36 and the connecting shaft 37 to move to one side under the action of meshing, so that the swing plate 38 moves to one side inside the water tank 1. The swinging plate 38 displaces the heated water around the gear ring to one side, while bringing the unheated water from the outside to the periphery of the gear ring. As the annular base 23 continues to rotate, the meshing between the first rack 40 and the second rack 41 disappears, and the swing plate 38 is reset by the return spring 39. As the annular base 23 continues to rotate, the first rack 40 meshes with the third rack 42, which in turn moves the other swing plate 38. The alternating swinging of the two swing plates 38 circulates the cooling water, thereby improving the cooling effect of the gear ring. At the same time, the swing plate 38 is tilted on one side, so when the swing plate 38 moves, the water at the bottom of the water tank 1 moves upward through the inclined surface of the swing plate 38, which facilitates the stirring of the water inside the water tank 1 and brings the water at the bottom of the water tank 1 to the top.

[0019] In this invention, the support mechanism 6 includes a sealing cover 9, a motor 10, a turntable, a hydraulic cylinder 11, a connecting rod 12, and a support assembly 13. The sealing cover 9 is fixed inside the water tank 1 by bolts. The top of the sealing cover 9 has an opening, and the opening is rotatably connected to the turntable by a bearing. The motor 10 is fixed inside the sealing cover 9 by bolts, and one end of it is fixedly connected to the turntable. The hydraulic cylinder 11 is fixed to the turntable by bolts, and its top is connected to the connecting rod 12 by bolts. The support assembly 13 is disposed on the top of the connecting rod 12.

[0020] Based on the above, the support assembly 13 consists of a support 14, multiple support plates 15 and multiple fixing components. The support 14 is fixed to the connecting rod 12 by bolts. Multiple support plates 15 are welded at equal intervals to the outer circumference of the support 14. The fixing components are set on the support plates 15 to fix the inner wall of the gear ring.

[0021] Based on the above, the fixing assembly includes a connecting seat 17, an inner wall clamping plate 18, and a fastening bolt 19. The connecting seat 17 is fixed to the support plate 15 by bolts. The top of the support plate 15 is provided with a positioning groove 16. A positioning block is slidably connected to the inner wall of the positioning groove 16. The positioning block is connected to the inner wall clamping plate 18 by bolts. One side of the connecting seat 17 is provided with a threaded hole that matches the fastening bolt 19. The threaded hole is threadedly connected to the fastening bolt 19. One side of the inner wall clamping plate 18 is set as an arc surface, and multiple anti-slip ridges are provided on one side to increase the friction between the inner wall clamping plate 18 and the inner wall of the gear ring.

[0022] When quenching the gear ring, the gear ring is placed between multiple support plates 15. At this time, the fastening bolt 19 is tightened, which will drive the inner wall clamp 18 to move, thereby supporting and fixing the inner wall clamp 18 to the inner wall of the gear ring. After fixing, the hydraulic cylinder 11 is started, which will drive the gear ring to move upward, so that the gear ring is located inside the induction heating coil 3. During quenching, the motor 10 will drive the gear ring to rotate, thereby improving the quenching effect.

[0023] Example 2, refer to Figures 1-8 A quenching device for gear ring machining, compared with Embodiment 1, has a spray fume removal mechanism 7 provided on one side of the support mechanism 6 to prevent the spread of fumes and the threat to the health of workers.

[0024] Based on the above, the spray smoke removal mechanism 7 includes a spray assembly, two side plates 20, an annular slide rail 28, two overflow plates 2, a sliding plate 29, and a connecting pipe 27. The two overflow plates 2 are fixed to both sides of the water tank 1 by bolts, and the two side plates 20 are fixed to the two overflow plates 2 by bolts. The annular slide rail 28 is fixedly sleeved on the spray assembly, and the sliding plate 29 is slidably connected to both sides of the annular slide rail 28, with one end of it connected to the side plate 20 by bolts. The spray assembly consists of an annular guide tube 21 and multiple spray heads 30. The annular slide rail 28 is sleeved on the annular guide tube 21, and the multiple spray heads 30 are equidistantly inclined. The connector is installed obliquely downward inside the annular conduit 21. The connector consists of a sleeve 25, a pull rod 26, and a piston 31. The sleeve 25 is fixed to the annular base 23 by bolts. The piston 31 is slidably connected inside the sleeve 25, and its top is bonded to the pull rod 26. A connecting plate 22 is welded to the outer circumference of the connecting rod. The connecting plate 22 is connected to the pull rod 26 by bolts. A water inlet end 32 is provided on one side of the sleeve 25 near the bottom. A one-way water inlet valve 33 is provided on one side of the water inlet end 32. The annular conduit 21 and the sleeve 25 are connected by a connecting pipe 27, which is made of hard metal.

[0025] When the gear ring is quenched, the support mechanism 6 will drive the gear ring to move upward. At this time, the piston 31 will slide upward inside the sleeve 25 under the action of the pull rod 26. At this time, the cooling water will be drawn into the sleeve 25. When the gear ring is cooled, the support mechanism 6 will drive the gear ring to move downward. The connecting rod 12 will drive the connecting plate 22 to move downward. When the connecting plate 22 moves downward, it will drive the pull rod 26 to slide downward inside the sleeve 25. At this time, the cooling water inside the sleeve 25 will be transported to the inside of the annular guide tube 21 through the connecting pipe 27 and sprayed out through multiple spray nozzles 30.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A quenching device for gear ring machining, comprising a water tank (1), a support mechanism (6), an induction heating coil (3), and a cable (5), wherein the support mechanism (6) is disposed at the bottom of the water tank (1), a support rod (4) is fixedly connected to one side of the induction heating coil (3), the support rod (4) being made of the same material as the induction heating coil (3), the support rod (4) being fixed to one side of an electromagnetic heating device and electrically connected to the electromagnetic heating device via the cable (5), characterized in that, The water tank (1) is equipped with an oscillating circulation mechanism (8). The oscillating circulation mechanism (8) includes an annular base (23), a transmission component (34), two rack seats (36), and two oscillating plates (38). A connecting component is provided between the annular base (23) and the support mechanism (6). An annular groove is provided at the bottom of the water tank (1). A sliding ring (24) is slidably connected to the inner wall of the annular groove. The sliding ring (24) is fixedly connected to the annular base (23). Horizontal grooves are provided on opposite sides of the water tank (1). A slider (35) is slidably connected inside the groove. The rack seat (36) is fixedly connected to one side of the slider (35). A connecting shaft (37) is fixedly connected between the swing plate (38) and the swing plate (38), and a return spring (39) is fixedly connected between the swing plate (38) and the water tank (1). One side of the swing plate (38) is set as an inclined surface. The transmission component (34) is composed of a first rack (40), a second rack (41) and a third rack (42). The first rack (40) is fixedly connected to the side wall of the annular base (23). The shape of the first rack (40) is arc-shaped. The second rack (41) and the third rack (42) are respectively fixed on one side of two rack seats (36). The second rack (41) and the third rack (42) are alternately distributed on both sides of the annular base (23). The support mechanism (6) includes a sealing cover (9), a motor (10), a turntable, a hydraulic cylinder (11), a connecting rod (12), and a support assembly (13). The sealing cover (9) is fixed inside the water tank (1). The top of the sealing cover (9) has an opening, which is rotatably connected to the turntable via a bearing. The motor (10) is fixed inside the sealing cover (9), with one end fixedly connected to the turntable. The hydraulic cylinder (11) is fixed on the turntable, with its top fixedly connected to the connecting rod (12). The support assembly (13) is located on the top of the connecting rod (12). The support assembly (13) includes a support (14), multiple support plates (15), and multiple fixing components. The fixing components include a connecting seat (17), an inner wall clamp (18), and fastening bolts (19). The connecting seat (17) is fixed on the support plate (15). The top of the support plate (15) has a positioning groove (16). 6) The inner wall is slidably connected with a positioning block, which is fixedly connected to the inner wall clamp (18). One side of the connecting seat (17) is provided with a threaded hole that matches the fastening bolt (19). The fastening bolt (19) is threadedly connected to the threaded hole. One side of the inner wall clamp (18) is set as an arc surface, and multiple anti-slip ridges are provided on one side. The connecting part includes a sleeve (25), a pull rod (26) and a piston (31). The sleeve (25) is fixed to the ring. On the shaped base (23), the piston (31) is slidably connected inside the sleeve (25), and its top is bonded to the pull rod (26). A connecting plate (22) is welded on the outer circumference of the connecting rod (12). The connecting plate (22) is fixedly connected to the pull rod (26). The first rack (40) is alternately meshed with the second rack (41) and the third rack (42) for transmission. The two swing plates (38) move in opposite directions in the horizontal direction.

2. The quenching device for gear ring machining according to claim 1, characterized in that, The support (14) is fixed on the connecting rod (12), and multiple support plates (15) are welded at equal intervals on the outer circumference of the support (14). The fixing component is set on the support plate (15).

3. A quenching device for gear ring machining according to claim 2, characterized in that, A spray smoke removal mechanism (7) is provided on one side of the support mechanism (6). The spray smoke removal mechanism (7) includes a spray assembly, two side plates (20), an annular slide rail (28), two overflow plates (2), a sliding plate (29), and a connecting pipe (27). The two overflow plates (2) are fixed on both sides of the water tank (1), and the two side plates (20) are fixed on the two overflow plates (2). The annular slide rail (28) is fixedly sleeved on the spray assembly. The sliding plate (29) is slidably connected to both sides of the annular slide rail (28), and one end of it is fixedly connected to the side plate (20).

4. A quenching device for gear ring machining according to claim 3, characterized in that, The spray assembly includes an annular conduit (21) and multiple spray heads (30). The annular slide rail (28) is sleeved on the annular conduit (21), and the multiple spray heads (30) are arranged at equal distances and inclined downwards inside the annular conduit (21).

5. A quenching apparatus for gear ring machining according to claim 4, characterized in that, A water inlet (32) is provided on one side of the sleeve (25) near the bottom. A one-way water inlet valve (33) is provided on one side of the water inlet (32). The annular conduit (21) and the sleeve (25) are connected by a connecting pipe (27), which is made of hard metal.

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