Hot straightening device for carburized and quenched gear

Abstract

The utility model provides a hot straightening device for a gear after carburizing and quenching, and relates to the field of hot straightening, the hot straightening device comprises a workbench, a U-shaped frame is fixedly connected to the upper side surface of the workbench, a preliminary positioning column is fixedly connected to the upper side surface of the workbench, the gear is arranged on the upper side surface of the workbench, and the preliminary positioning column is fixedly connected to the upper side surface of the workbench; according to the gear straightening device, the preliminary positioning column is arranged, so that a gear can be quickly and preliminarily positioned, a stable supporting structure is formed in cooperation with the U-shaped frame and the annular plate, it is guaranteed that the gear is not prone to deviation in the straightening process, a first hydraulic telescopic rod drives a mounting plate and an extrusion plate to achieve radial pressure application, and the gear straightening device is convenient to use. The T-shaped groove is matched with the T-shaped sliding block, so that the extrusion plate can be rapidly detached and replaced to adapt to the outer circle sizes of gears of different specifications, the sliding groove is matched with the height adjusting assembly, a foundation is provided for follow-up radial straightening height adjustment, the overall structure is simple, operation is convenient and fast, and the straightening adaptability and the foundation efficiency are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of hot straightening, and more specifically, to a hot straightening device for gears after carburizing and quenching. Background Technology

[0002] After carburizing and quenching, gears are prone to deformation such as end face warping and elliptical gear rings due to uneven microstructure transformation and internal stress. Straightening is required to ensure accuracy. However, existing hot straightening devices have many shortcomings, are difficult to adapt to gears of various specifications, and have poor straightening effects.

[0003] Planar straightening often uses a single pressure plate to apply pressure, which can easily aggravate end face deformation due to uneven force distribution. This method cannot meet the precise positioning requirements of gears with different thicknesses. Radial straightening mechanisms have a fixed height and cannot be flexibly adjusted according to the axial dimensions of the gears, thus limiting their adaptability. Furthermore, the radial contact components are mostly fixed structures, which cannot be quickly replaced to adapt to the outer diameter of gears of different specifications, reducing production efficiency. In view of this, we propose a hot straightening device for gears after carburizing and quenching. Utility Model Content

[0004] The purpose of this utility model is to solve the problems currently raised.

[0005] To achieve the above-mentioned objectives and improve the aforementioned problems, this utility model provides a hot straightening device for gears after carburizing and quenching, comprising a worktable, a U-shaped frame fixedly connected to the upper surface of the worktable, a preliminary positioning post fixedly connected to the upper surface of the worktable, a gear disposed on the upper surface of the worktable, sliding grooves formed on the adjacent surfaces of the two vertical plates of the U-shaped frame, an annular plate disposed between the two vertical plates of the U-shaped frame, a fixing frame fixedly connected to the outer surface of the annular plate, a first hydraulic telescopic rod disposed on the fixing frame, the first hydraulic telescopic rod penetrating the annular plate on the side near the axis of the annular plate, a mounting plate fixedly connected to the end of the first hydraulic telescopic rod, a T-shaped groove formed on the side near the axis of the annular plate, a pressing plate disposed on the side near the axis of the annular plate, a T-shaped slider fixedly connected to the side near the mounting plate, and a height adjustment component disposed on the sliding groove.

[0006] As a preferred technical solution of this application, the height adjustment component includes two threaded rods, which are rotatably connected inside two sliding grooves. The upper ends of the threaded rods rotatably penetrate to the upper surface of the U-shaped frame plate, and two motors are fixedly connected to the upper surface of the U-shaped frame plate.

[0007] As a preferred technical solution of this application, the output ends of the two motors are respectively fixedly connected to two threaded rods, and two connecting plates are fixedly connected to the outer surface of the annular plate, and the two connecting plates are respectively slidably connected to two sliding grooves.

[0008] As a preferred technical solution of this application, the two connecting plates are respectively threaded onto the outer surfaces of the two threaded rods, and a second hydraulic telescopic rod is fixedly connected to the upper surface of the U-shaped frame cross plate, with the telescopic end of the second hydraulic telescopic rod sliding through to the lower surface of the U-shaped frame cross plate.

[0009] As a preferred technical solution of this application, the output end of the second hydraulic telescopic rod is fixedly connected to a first fixing plate, the lower surface of the first fixing plate is fixedly connected to a first extension rod, and the lower end of the first extension rod is fixedly connected to an upper pressure plate.

[0010] As a preferred technical solution of this application, the upper surface of the upper pressure plate is provided with a clearance groove extending to its lower surface, the inside of the worktable is provided with a drive cavity, and the bottom wall of the drive cavity is fixedly connected with a third hydraulic telescopic rod.

[0011] As a preferred technical solution of this application, the output end of the third hydraulic telescopic rod is fixedly connected to a second fixing plate, and the upper surface of the second fixing plate is fixedly connected to a second extension rod.

[0012] As a preferred technical solution of this application, the upper end of the second extension rod slides through to the upper surface of the workbench, and a lower pressure plate is fixedly connected to the upper end of the second extension rod. The lower pressure plate is also provided with a clearance groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In the scheme of this application:

[0015] 1. By setting up preliminary positioning posts, gears can be quickly pre-positioned. Together with U-shaped frames and ring plates, a stable support structure is formed to ensure that the gears are not easily deviated during the straightening process. The first hydraulic telescopic rod drives the mounting plate and the extrusion plate to achieve radial pressure. The cooperation between the T-shaped groove and the T-shaped slider allows the extrusion plate to be quickly disassembled and replaced to adapt to the outer diameter of gears of different specifications. The sliding groove cooperates with the height adjustment component to provide a basis for subsequent radial straightening height adjustment. The overall structure is simple, the operation is convenient, and the straightening adaptability and basic efficiency are effectively improved.

[0016] 2. The height adjustment assembly, consisting of a threaded rod, motor, and connecting plate, can precisely adjust the height of the annular plate, adapting to gears with different axial dimensions. This ensures precise contact between the extrusion plate and the tooth tip circle. The second and third hydraulic telescopic rods drive the upper and lower pressure plates to move in opposite directions, achieving precise straightening of the gear plane. This avoids interference between the clearance groove and the initial positioning post, achieving integrated plane and radial straightening. The assembly is precise in adjustment and easy to operate, balancing straightening accuracy with mass production efficiency. It effectively solves the problems of poor adaptability and cumbersome operation of existing devices. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of the gear carburized and quenched hot straightening device provided in this application;

[0018] Figure 2 A schematic diagram of the extrusion plate in the hot straightening device for gears after carburizing and quenching provided in this application;

[0019] Figure 3 A schematic diagram of the drive cavity in the gear carburized and quenched hot straightening device provided in this application;

[0020] Figure 4 The gear hot straightening device provided in this application after carburizing and quenching Figure 1 Enlarged view of point A in the middle.

[0021] The image shows:

[0022] 1. Workbench; 2. U-shaped frame; 3. Preliminary positioning column; 4. Gear; 5. Sliding groove; 6. Annular plate; 7. Fixing frame; 8. First hydraulic telescopic rod; 9. Mounting plate; 10. T-slot; 11. Extrusion plate; 12. T-shaped slider; 13. Threaded rod; 14. Motor; 15. Connecting plate; 16. Second hydraulic telescopic rod; 17. First fixing plate; 18. First extension rod; 19. Upper pressure plate; 20. Clearance groove; 21. Drive cavity; 22. Third hydraulic telescopic rod; 23. Second fixing plate; 24. Second extension rod; 25. Lower pressure plate. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] Example 1

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A gear straightening device after carburizing and quenching includes a worktable 1, a U-shaped frame 2 fixedly connected to the upper surface of the worktable 1, a preliminary positioning post 3 fixedly connected to the upper surface of the worktable 1, a gear 4 disposed on the upper surface of the worktable 1, sliding grooves 5 formed on the adjacent surfaces of the two vertical plates of the U-shaped frame 2, an annular plate 6 disposed between the two vertical plates of the U-shaped frame 2, a fixing frame 7 fixedly connected to the outer surface of the annular plate 6, a first hydraulic telescopic rod 8 disposed on the fixing frame 7, the surface of the first hydraulic telescopic rod 8 near the axis of the annular plate 6 penetrating the annular plate 6, a mounting plate 9 fixedly connected to the end of the first hydraulic telescopic rod 8, a T-shaped groove 10 formed on the surface of the mounting plate 9 near the axis of the annular plate 6, and the mounting plate 9 near the axis of the annular plate 6. A pressing plate 11 is provided on one side of the device. A T-shaped slider 12 is fixedly connected to the surface of the pressing plate 11 near the mounting plate 9. A height adjustment component is provided on the sliding groove 5. By setting the initial positioning column 3, the gear 4 can be quickly initially positioned. Together with the U-shaped frame 2 and the annular plate 6, a stable support structure is formed to ensure that the gear 4 is not easily deviated during the straightening process. The first hydraulic telescopic rod 8 drives the mounting plate 9 and the pressing plate 11 to achieve radial pressure. The cooperation between the T-shaped groove 10 and the T-shaped slider 12 allows the pressing plate 11 to be quickly disassembled and replaced to adapt to the outer diameter of gears 4 of different specifications. The sliding groove 5 cooperates with the height adjustment component to provide a basis for subsequent radial straightening height adjustment. The overall structure is simple, the operation is convenient, and the straightening adaptability and basic efficiency are effectively improved.

[0029] Example 2

[0030] The hot straightening device for gears after carburizing and quenching provided in Example 1 has been further optimized, specifically, as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the height adjustment assembly includes two threaded rods 13, which are rotatably connected to the interiors of two sliding grooves 5. The upper ends of the threaded rods 13 rotatably extend to the upper surface of the U-shaped frame 2. Two motors 14 are fixedly connected to the upper surface of the U-shaped frame 2. The output ends of the two motors 14 are fixedly connected to the two threaded rods 13. Two connecting plates 15 are fixedly connected to the outer surface of the annular plate 6. The two connecting plates 15 are slidably connected to the two sliding grooves 5. The two connecting plates 15 are threaded onto the outer surface of the two threaded rods 13. A second hydraulic telescopic rod 16 is fixedly connected to the upper surface of the U-shaped frame 2. The telescopic end of the second hydraulic telescopic rod 16 slides through to the lower surface of the U-shaped frame 2. The output end of the second hydraulic telescopic rod 16 is fixedly connected to a first fixing plate 17.

[0031] A first extension rod 18 is fixedly connected to the lower surface of the first fixed plate 17. An upper pressure plate 19 is fixedly connected to the lower end of the first extension rod 18. A clearance groove 20 extending to the lower surface of the upper pressure plate 19 is formed on the upper surface of the upper pressure plate 19. A drive cavity 21 is formed inside the worktable 1. A third hydraulic telescopic rod 22 is fixedly connected to the bottom wall of the drive cavity 21. A second fixed plate 23 is fixedly connected to the output end of the third hydraulic telescopic rod 22. A second extension rod 24 is fixedly connected to the upper surface of the second fixed plate 23. The upper end of the second extension rod 24 slides through to the upper surface of the worktable 1. A lower pressure plate 25 is fixedly connected to the upper end of the second extension rod 24. The pressure plate 25 is also provided with a clearance groove 20. The height adjustment assembly, consisting of the threaded rod 13, motor 14, and connecting plate 15, can precisely adjust the height of the annular plate 6 to adapt to gears 4 with different axial dimensions, ensuring precise contact between the extrusion plate 11 and the tooth tip circle. The second hydraulic telescopic rod 16 and the third hydraulic telescopic rod 22 drive the upper pressure plate 19 and the lower pressure plate 25 to move in opposite directions, achieving precise straightening of the gear 4 plane. The clearance groove 20 avoids interference with the initial positioning post 3. The whole system achieves integrated plane and radial straightening, with precise adjustment and simple operation, taking into account both straightening accuracy and batch production efficiency, effectively solving the problems of poor adaptability and cumbersome operation of existing devices.

[0032] The process of using the gear carburizing and quenching hot straightening device provided by this utility model is as follows:

[0033] When straightening the gear after quenching, the gear 4 is placed on the lower pressure plate 25 and initially positioned using the initial positioning pin 3 in conjunction with the assembly hole in the middle of the gear 4. Then, the upper pressure plate 19 and the lower pressure plate 25 are pushed to move in opposite directions by the second hydraulic telescopic rod 16 and the third hydraulic telescopic rod 22 respectively, so that the horizontal surface of the gear 4 can be squeezed and leveled. After the horizontal surface is leveled, the threaded rod 13 can be driven to move synchronously by the motor 14. After the threaded rod 13 moves, it will drive the connecting plate 15 to move vertically. Since both connecting plates 15 are fixedly connected to the annular plate 6, the rotation of the threaded rod 13 will drive the annular plate 6 to move vertically. After the annular plate 6 moves, the extrusion plate 11 squeezes the tooth tip circle on the gear 4, thereby restoring the gear 4 to a circle. At the same time, when facing gears 4 of different specifications, the extrusion plate 11 with different curvatures can be replaced to achieve the adaptation. When replacing, simply pull the extrusion plate 11 upward to take it out. When installing, simply align the T-shaped slider 12 with the T-shaped groove 10 and slide it in.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A hot straightening device for gears after carburizing and quenching, characterized in that, The device includes a workbench (1), a U-shaped frame (2) fixedly connected to the upper surface of the workbench (1), a preliminary positioning column (3) fixedly connected to the upper surface of the workbench (1), a gear (4) provided on the upper surface of the workbench (1), a sliding groove (5) provided on the side surface of the two vertical plates of the U-shaped frame (2) that are close to each other, an annular plate (6) provided between the two vertical plates of the U-shaped frame (2), a fixing frame (7) fixedly connected to the outer surface of the annular plate (6), and a first hydraulic telescopic rod (8) provided on the fixing frame (7). The first hydraulic telescopic rod (8) has a side surface near the axis of the annular plate (6) that penetrates the annular plate (6). The end of the first hydraulic telescopic rod (8) is fixedly connected to a mounting plate (9). A T-shaped groove (10) is provided on the side surface of the mounting plate (9) near the axis of the annular plate (6). A pressing plate (11) is provided on the side surface of the mounting plate (9) near the axis of the annular plate (6). A T-shaped slider (12) is fixedly connected on the side surface of the pressing plate (11) near the mounting plate (9). A height adjustment component is provided on the sliding groove (5).

2. The gear hot straightening device after carburizing and quenching according to claim 1, characterized in that, The height adjustment assembly includes two threaded rods (13), which are rotatably connected to the interior of two sliding grooves (5). The upper end of the threaded rod (13) rotatably extends through to the upper surface of the U-shaped frame (2) cross plate. Two motors (14) are fixedly connected to the upper surface of the U-shaped frame (2) cross plate.

3. The gear hot straightening device after carburizing and quenching according to claim 2, characterized in that, The output ends of the two motors (14) are fixedly connected to the two threaded rods (13) respectively. The outer surface of the annular plate (6) is fixedly connected to two connecting plates (15), and the two connecting plates (15) are slidably connected to the two sliding grooves (5) respectively.

4. The gear hot straightening device after carburizing and quenching according to claim 3, characterized in that, The two connecting plates (15) are respectively threaded onto the outer surfaces of the two threaded rods (13). The upper surface of the U-shaped frame (2) is fixedly connected to the second hydraulic telescopic rod (16), and the telescopic end of the second hydraulic telescopic rod (16) slides through to the lower surface of the U-shaped frame (2).

5. The gear hot straightening device after carburizing and quenching according to claim 4, characterized in that, The output end of the second hydraulic telescopic rod (16) is fixedly connected to a first fixed plate (17), the lower surface of the first fixed plate (17) is fixedly connected to a first extension rod (18), and the lower end of the first extension rod (18) is fixedly connected to an upper pressure plate (19).

6. The gear hot straightening device after carburizing and quenching according to claim 5, characterized in that, The upper pressure plate (19) has a relief groove (20) extending to its lower surface. The worktable (1) has a drive cavity (21) inside. The bottom wall of the drive cavity (21) is fixedly connected to a third hydraulic telescopic rod (22).

7. The gear hot straightening device after carburizing and quenching according to claim 6, characterized in that, The output end of the third hydraulic telescopic rod (22) is fixedly connected to a second fixing plate (23), and the upper surface of the second fixing plate (23) is fixedly connected to a second extension rod (24).

8. The gear hot straightening device after carburizing and quenching according to claim 7, characterized in that, The upper end of the second extension rod (24) slides through to the upper surface of the workbench (1). The upper end of the second extension rod (24) is fixedly connected to a lower pressure plate (25), and the lower pressure plate (25) is also provided with a clearance groove (20).

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