Mechanical gear tooth heat treatment equipment

Abstract

The utility model relates to the technical field of heat treatment, and discloses mechanical gear tooth heat treatment equipment. The mechanical gear tooth heat treatment equipment comprises a working base table and an induction heating device, a sliding groove is formed in the top of the working base table, a moving assembly connected with the sliding groove in a sliding mode is arranged at the top of the working base table, and the induction heating device is arranged at the top of the moving assembly. The gear quenching device has the advantages of simple structure, simple operation of taking down the quenched gear, reduction of the possibility of contact with the quenched gear and the like, and solves the problems that when the device is used, only single gear teeth of the gear can be heated in sequence, then quenching liquid is sprayed to the single gear teeth, and then quenching of all gear teeth of the whole gear needs a long time; and the problems that the edge of the quenched gear still has high temperature, a locking nut needs to be screwed off when the quenched gear is taken down, mistaken touch may occur, and certain danger exists are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment, in particular to a heat treatment device for mechanical gear teeth. Background Art

[0002] Gears are subject to a lot of friction during operation, and the surface layer is constantly worn. Therefore, the surface layer of gear parts is required to have high strength, high hardness, high wear resistance and high fatigue limit. Only surface strengthening can meet the above requirements. Surface quenching has the advantages of small deformation and high productivity, so it is widely used in production. The purpose of gear quenching is to transform the supercooled austenite into martensite or bainite to obtain martensite or bainite structure, and then temper it at different temperatures to greatly improve the strength, hardness, wear resistance, fatigue strength and toughness of the steel, so as to meet the different use requirements of various mechanical parts and tools.

[0003] For example, publication number CN208087675U discloses a gear quenching equipment, which belongs to the field of heat treatment equipment. It solves the problem of excessive gear quenching energy consumption caused by quenching the entire gear. The key points of its technical solution are that it includes a frame, the frame is provided with a heating coil, and alternating current is passed through the heating coil. The frame is provided with a nozzle, and the frame is provided with a water pump, which is connected to the nozzle. The utility model has a reasonable structure and only quenches the gear tooth part, thereby achieving the purpose of saving quenching energy consumption.

[0004] When the device is in use, it can only heat a single gear tooth in turn, and then spray quenching liquid on the single gear tooth. It takes a long time to complete the quenching of all the gear teeth of the entire gear, and the edge of the gear after quenching still has a high temperature. When removing the quenched gear, the locking nut needs to be unscrewed, which may cause accidental contact and pose a certain risk. Therefore, a mechanical gear tooth heat treatment equipment is proposed to solve the above problem. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a mechanical gear tooth heat treatment device, which has the advantages of being able to quickly complete the quenching of all gear teeth, and the operation of removing the quenched gear is simple, reducing the possibility of contact with the quenched gear, etc. It solves the problem that when the device is in use, it can only heat the individual gear teeth of the gear in turn, and then spray quenching liquid on the individual gear teeth, and then it takes a long time to complete the quenching of all the gear teeth of the entire gear, and the edge of the gear after quenching still has a high temperature. When removing the quenched gear, the locking nut needs to be unscrewed, which may cause accidental contact and a certain degree of danger.

[0007] (II) Technical solution

[0008] The utility model solves the above technical problems with the following technical solutions: a mechanical gear tooth heat treatment equipment, comprising a working base and an induction heating device, the top of the working base is provided with a slide groove, the top of the working base is provided with a moving component slidably connected to the slide groove, the top of the moving component is provided with an induction heating device, the top of the working base is fixedly connected to an assembly shell, the top of the assembly shell is rotatably connected to a return rod extending to the inside thereof, the outer side of the return rod is fixedly connected to a sector gear located in the assembly shell, the inside of the assembly shell is provided with a fan gear connected to the sector gear An engaged reset component, one end of the return rod away from the assembly shell is fixedly connected to the mounting shell, the interior of the mounting shell is provided with a DC brushless motor with an output end extending to the bottom thereof, the output end of the DC brushless motor is fixedly connected to a rotating column rotatably connected to the mounting shell and extending to the bottom of the mounting shell, a lifting component is provided on the outside of the rotating column, the bottom of the rotating column is hinged with contact blocks distributed in a ring array, the top of the contact blocks are all provided with wedge surfaces adapted to the lifting component, the contact blocks are all adapted to the induction heating device, and a quenching pool is provided on the top of the working base.

[0009] The beneficial effects of the utility model are as follows: quenching liquid is filled into the quenching pool, the unquenched gear is sleeved on the outer side of the contact block, and then the lifting assembly is rotated to make the lifting assembly descend, and then under the cooperation of the descending lifting assembly and the wedge-shaped surface on the top of the contact block, the bottom of the contact block rotates toward the opposite side around its hinge until the contact block and the inner side of the unquenched gear are tightly fitted, and the rotating moving assembly drives the induction heating device to move to the right until the induction heating device moves to a position where the unquenched gear can be inductively heated, thereby starting the DC brushless motor, driving the rotating column to rotate, and then driving the unquenched gear. The quenching gear rotates, and the induction heating device is started at the same time to heat the gear teeth at the edge of the rotating unquenched gear until all the gear teeth of the unquenched gear are heated. At the same time, the induction heating device and the DC brushless motor are turned off, and the return rod is turned to make the heated gear located above the quenching pool. During this process, the return rod drives the sector gear to rotate, and then the reset component undergoes elastic deformation. When the heated gear is located above the quenching pool, the lifting component is turned to make it rise, and the outer side of the contact block can be separated from the inner side of the sector gear. Under the action of the sector gear's own gravity, it falls into the quenching pool for quenching.

[0010] The mechanical gear tooth heat treatment equipment has the advantages of being able to quickly complete the quenching of all gear teeth, and the operation of removing the quenched gear is simple, thereby reducing the possibility of contact with the quenched gear.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the movable component includes a threaded hole plate, a threaded rod and a slider. The top of the working base is fixedly connected to the threaded hole plate, the left side of the threaded hole plate is threadedly connected to a threaded rod extending to its right side, the right side of the threaded rod is rotatably connected to a slider slidably connected to the slide groove, and the top of the slider is provided with an induction heating device adapted to the contact block.

[0013] The beneficial effect of adopting the above further solution is that when the threaded rod is rotated, the force generated by the rotation of the thread drives the slider to slide rightward along the slide groove, and then drives the induction heating device to move to a position where the unhardened gear can be inductively heated.

[0014] Furthermore, the reset assembly includes a rack and a reset spring, the front wall of the inner cavity of the assembly shell is slidably connected with a rack meshing with the fan-shaped gear, and a reset spring is provided between the right side of the rack and the right wall of the inner cavity of the assembly shell.

[0015] The beneficial effect of adopting the above further scheme is that when the return rod rotates, the return rod drives the fan-shaped gear to rotate, the fan-shaped gear engages with the rack, causing the rack to slide to the right, and then causing the reset spring to elastically deform. When the return rod is released, the reset spring restores the elastic deformation, causing the rack to reset, and then drives the return rod to reset through the fan-shaped gear.

[0016] Furthermore, the lifting assembly includes an external thread and an internal thread sleeve, the outer side of the rotating column is provided with an external thread, the outer side of the rotating column is threadedly connected with an internal thread sleeve adapted to the external thread, and the wedge-shaped surface at the top of the contact block is adapted to the bottom of the internal thread sleeve;

[0017] Furthermore, the opposite sides of the contact blocks are roughened.

[0018] The beneficial effect of adopting the above further scheme is that when the internal threaded sleeve is rotated, the force generated by the rotation of the thread drives the internal threaded sleeve to move downward under the cooperation of the internal threaded sleeve and the external thread, and under the cooperation of the bottom of the internal threaded sleeve and the wedge-shaped surface at the top of the contact block, the bottom of the contact block rotates to the opposite side around its hinge until the opposite side of the contact block is tightly fitted with the inner side of the unhardened gear, and the rough treatment of the opposite side of the contact block can provide sufficient friction for fixing the contact block and the inner side of the unhardened gear, thereby fixing the unhardened gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a top sectional view of the assembly shell of the utility model;

[0021] Figure 3 This is a left side sectional view of the working base of the utility model;

[0022] Figure 4 It is an enlarged schematic diagram of the structure at point a of the utility model.

[0023] In the figure: 1. working base; 2. induction heating device; 3. slide; 4. moving assembly; 401. threaded hole plate; 402. threaded rod; 403. slider; 5. assembly shell; 6. return rod; 7. sector gear; 8. reset assembly; 801. rack; 802. reset spring; 9. mounting shell; 10. DC brushless motor; 11. rotating column; 12. lifting assembly; 121. external thread; 122. internal thread sleeve; 13. contact block; 14. wedge surface; 15. quenching pool. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the embodiment, Figure 1-4 A mechanical gear tooth heat treatment device is provided. The utility model comprises a working base 1 and an induction heating device 2. A slide groove 3 is provided on the top of the working base 1. A moving component 4 slidably connected to the slide groove 3 is provided on the top of the working base 1. The induction heating device 2 is provided on the top of the moving component 4. An assembly shell 5 is fixedly connected to the top of the assembly shell 5. A return rod 6 extending to the inside of the assembly shell 5 is rotatably connected to the top of the assembly shell 5. A sector gear 7 located in the assembly shell 5 is fixedly connected to the outside of the return rod 6. A reset component 8 meshing with the sector gear 7 is provided inside the assembly shell 5. The return rod 6 is fixedly connected with a mounting shell 9 at one end away from the assembly shell 5, and a DC brushless motor 10 with an output end extending to the bottom thereof is arranged inside the mounting shell 9, and a rotating column 11 which is rotatably connected to the mounting shell 9 and extends to the bottom of the mounting shell 9 is fixedly connected at the output end of the DC brushless motor 10, and a lifting assembly 12 is arranged on the outer side of the rotating column 11, and contact blocks 13 distributed in a ring array are hingedly connected at the bottom of the rotating column 11, and the tops of the contact blocks 13 are all provided with wedge-shaped surfaces 14 adapted to the lifting assembly 12, and the contact blocks 13 are all adapted to the induction heating device 2, and a quenching pool 15 is opened on the top of the working base 1;

[0026] The moving assembly 4 includes a threaded hole plate 401, a threaded rod 402 and a slider 403. The top of the working base 1 is fixedly connected with the threaded hole plate 401. The left side of the threaded hole plate 401 is threadedly connected with a threaded rod 402 extending to the right side thereof. The right side of the threaded rod 402 is rotatably connected with a slider 403 slidably connected with the slide groove 3. The top of the slider 403 is provided with an induction heating device 2 adapted to the contact block 13.

[0027] The threaded rod 402 is rotated, and the force generated by the rotation of the thread drives the slider 403 to slide rightward along the slide groove 3, and then drives the induction heating device 2 to move to a position where the unhardened gear can be inductively heated;

[0028] The reset assembly 8 includes a rack 801 and a reset spring 802. The front wall of the inner cavity of the assembly shell 5 is slidably connected with the rack 801 meshing with the sector gear 7. The reset spring 802 is arranged between the right side of the rack 801 and the right wall of the inner cavity of the assembly shell 5.

[0029] When the return rod 6 rotates, the return rod 6 drives the sector gear 7 to rotate, and the sector gear 7 meshes with the rack 801, so that the rack 801 slides to the right, and then the return spring 802 is elastically deformed. When the return rod 6 is released, the return spring 802 recovers its elastic deformation, so that the rack 801 is reset, and then the return rod 6 is driven to reset through the sector gear 7;

[0030] The lifting assembly 12 includes an external thread 121 and an internal thread sleeve 122. The external thread 121 is provided on the outer side of the rotating column 11. The external thread of the rotating column 11 is connected to the internal thread sleeve 122 adapted to the external thread 121. The wedge-shaped surface 14 on the top of the contact block 13 is adapted to the bottom of the internal thread sleeve 122.

[0031] The opposite sides of the contact block 13 are roughened;

[0032] Rotate the internal threaded sleeve 122. With the cooperation between the internal threaded sleeve 122 and the external thread 121, the force generated by the rotation of the thread drives the internal threaded sleeve 122 to move downward. With the cooperation between the bottom of the internal threaded sleeve 122 and the wedge-shaped surface 14 at the top of the contact block 13, the bottom of the contact block 13 rotates toward the opposite side around its hinge until the opposite side of the contact block 13 fits tightly with the inner side of the unhardened gear. The rough treatment of the opposite side of the contact block 13 can provide sufficient friction for fixing the contact block 13 and the inner side of the unhardened gear, thereby fixing the unhardened gear.

[0033] Working principle:

[0034] Step 1: Quenching liquid is filled into the quenching pool 15, and the unquenched gear is sleeved on the outer side of the contact block 13, and then the internal thread sleeve 122 is rotated. Under the cooperation between the internal thread sleeve 122 and the external thread 121, the force generated by the rotation of the thread drives the internal thread sleeve 122 to move downward. Under the cooperation between the bottom of the internal thread sleeve 122 and the wedge-shaped surface 14 at the top of the contact block 13, the bottom of the contact block 13 rotates toward the opposite side around its hinge until the opposite side of the contact block 13 is tightly fitted with the inner side of the unquenched gear, and the unquenched gear can be fixed;

[0035] Step 2: Rotate the threaded rod 402. The force generated by the rotation of the thread drives the slider 403 to slide rightward along the slide slot 3, and then drives the induction heating device 2 to move to a position where the unhardened gear can be inductively heated, thereby starting the DC brushless motor 10, driving the rotating column 11 to rotate, and then driving the unhardened gear to rotate. At the same time, the induction heating device 2 is started to heat the gear teeth at the edge of the rotating unhardened gear until all the gear teeth of the unhardened gear are heated. At the same time, the induction heating device 2 and the DC brushless motor 10 are turned off;

[0036] Step 3: Rotate the return rod 6 to position the heated gear above the quenching pool 15. During this process, the return rod 6 drives the sector gear 7 to rotate, which then causes the reset assembly 8 to undergo elastic deformation. When the heated gear is above the quenching pool 15, rotate the internal threaded sleeve 122 to raise it, and the outer side of the contact block 13 can be separated from the inner side of the sector gear 7. Under the action of its own gravity, the sector gear 7 falls into the quenching pool 15 for quenching. Release the return rod 6, and the reset spring 802 restores its elastic deformation to reset the rack 801, which then drives the return rod 6 to reset through the sector gear 7.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical gear tooth heat treatment device, comprising a working base (1) and an induction heating device (2), characterized in that: The top of the working base (1) is provided with a slide groove (3), the top of the working base (1) is provided with a moving component (4) slidably connected to the slide groove (3), the top of the moving component (4) is provided with an induction heating device (2), the top of the working base (1) is fixedly connected to an assembly shell (5), the top of the assembly shell (5) is rotatably connected to a return rod (6) extending into the interior thereof, the outer side of the return rod (6) is fixedly connected to a sector gear (7) located in the assembly shell (5), the interior of the assembly shell (5) is provided with a reset component (8) meshing with the sector gear (7), the end of the return rod (6) away from the assembly shell (5) is fixedly connected to a mounting shell (9), a DC brushless motor (10) with an output end extending to the bottom of the mounting shell (9) is arranged inside the mounting shell (9), the output end of the DC brushless motor (10) is fixedly connected to a rotating column (11) which is rotatably connected to the mounting shell (9) and extends to the bottom of the mounting shell (9), a lifting assembly (12) is arranged on the outside of the rotating column (11), the bottom of the rotating column (11) is hinged with contact blocks (13) distributed in a ring array, the top of each of the contact blocks (13) is provided with a wedge surface (14) adapted to the lifting assembly (12), each of the contact blocks (13) is adapted to the induction heating device (2), and a quenching pool (15) is provided on the top of the working base (1).

2. The mechanical gear tooth heat treatment equipment according to claim 1, characterized in that: The moving assembly (4) comprises a threaded hole plate (401), a threaded rod (402) and a slider (403); the top of the working base (1) is fixedly connected to the threaded hole plate (401); the left side of the threaded hole plate (401) is threadedly connected to the threaded rod (402) extending to the right side thereof; the right side of the threaded rod (402) is rotatably connected to a slider (403) slidably connected to the slide groove (3); the top of the slider (403) is provided with an induction heating device (2) adapted to the contact block (13).

3. The mechanical gear tooth heat treatment equipment according to claim 1, characterized in that: The reset assembly (8) comprises a rack (801) and a reset spring (802); the front wall of the inner cavity of the assembly shell (5) is slidably connected to a rack (801) meshing with the sector gear (7); a reset spring (802) is provided between the right side of the rack (801) and the right wall of the inner cavity of the assembly shell (5).

4. The mechanical gear tooth heat treatment equipment according to claim 1, characterized in that: The lifting assembly (12) comprises an external thread (121) and an internal thread sleeve (122); the external thread (121) is provided on the outer side of the rotating column (11); the external thread of the rotating column (11) is connected to an internal thread sleeve (122) adapted to the external thread (121); and the wedge-shaped surface (14) at the top of the contact block (13) is adapted to the bottom of the internal thread sleeve (122).

5. The mechanical gear tooth heat treatment equipment according to claim 1, characterized in that: The opposite sides of the contact blocks (13) are roughened.

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