Anti-deformation device for driving gear heat treatment

Abstract

The utility model discloses a kind of anti-deformation equipment for driving gear heat treatment in the technical field of gear heat treatment, including base. The upper end of base is centrally provided with support shaft, and lower pressing disc, driving gear, upper pressing disc, disc spring group and compression nut are sequentially installed from below to top along the axial direction of support shaft. Multiple limiting assemblies are uniformly distributed on the edge of lower pressing disc, and the limiting assemblies are tightly contacted with the dedendum circle of driving gear, to realize radial positioning. Radial upper flow guide grooves and lower flow guide grooves are respectively formed on the contact surface of upper pressing disc and lower pressing disc and driving gear. The utility model simplifies equipment composition by modular positioning structure, optimizes quenching cooling uniformity by using radial flow guide grooves, and solves the problem of driving gear heat treatment deformation control by combining the elastic compression mechanism of disc spring group.

Description

Technical Field

[0001] This utility model relates to the field of gear heat treatment technology, and in particular to an anti-deformation device for heat treatment of drive gears. Background Technology

[0002] In the field of mechanical manufacturing, heat treatment of drive gears is a crucial step in ensuring their performance and quality. To prevent deformation of drive gears during heat treatment, various anti-deformation devices have been developed in the existing technology. However, these devices have many problems, affecting the heat treatment effect and production efficiency of the drive gears.

[0003] Existing anti-deformation equipment for heat treatment of drive gears has a complex structure, which not only increases manufacturing costs but also makes maintenance more difficult and costly. Furthermore, due to its unreasonable structural design, the cooling of the drive gears during the quenching stage after heat treatment is unsatisfactory. Specifically, the outer diameter and tooth portion of the gear cools relatively quickly, while the central area of ​​the end face in close contact with the pressure plate cools significantly slower. This uneven cooling leads to significant thermal stress inside the drive gear, thus affecting its accuracy and service life. Therefore, there is an urgent need to develop an anti-deformation equipment for heat treatment that is simple in structure, has low maintenance costs, and can ensure uniform cooling of the drive gears. Utility Model Content

[0004] The main objective of this invention is to provide a deformation-resistant device for heat treatment of drive gears, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A deformation-preventing device for heat treatment of drive gears includes a base. A support shaft is centrally located at the upper end of the base. Along the axial direction of the support shaft, from bottom to top, a lower pressure plate, a drive gear, an upper pressure plate, a disc spring assembly, and a clamping nut are sequentially installed. Multiple limiting components are evenly distributed along the edge of the lower pressure plate, and these limiting components abut against the root circle of the drive gear to achieve radial positioning. Radial upper and lower guide grooves are respectively formed on the contact surfaces of the upper and lower pressure plates with the drive gear.

[0006] Furthermore, the limiting component includes a screw, a positioning block, and a handwheel. Multiple screw holes are provided on the circumference of the lower pressure plate, and screws are installed in the screw holes respectively. One end of the screw is provided with a positioning block that abuts against the drive gear, and the other end of the screw is provided with a handwheel.

[0007] Furthermore, mounting holes are provided in the center of both the upper and lower pressure plates, and the support shaft slides through the mounting holes of the upper and lower pressure plates respectively.

[0008] Furthermore, the upper end of the support shaft is provided with an external thread, and the clamping nut is engaged with the external thread.

[0009] Furthermore, the number of limit components is 6.

[0010] Furthermore, the cross-sections of both the upper and lower guide channels are semi-circular, and the included angle between adjacent upper guide channels is 60°, and the included angle between adjacent lower guide channels is 60°.

[0011] This utility model also includes other components that enable the anti-deformation device for heat treatment of the drive gear to function properly. These devices or components all employ conventional techniques in the art. Furthermore, devices and components not limited in this utility model all employ conventional techniques in the art, such as the disc spring assembly in this application. In specific implementation, appropriate device or component models can be selected according to the specific working scenario.

[0012] The working principle of this invention is as follows: First, the lower pressure plate is fitted onto the support shaft and placed on the base. Then, the drive gear is placed on the surface of the lower pressure plate. By rotating the handwheels of the six limiting components, the screw drives the positioning block to radially press against the root circle of the drive gear teeth, achieving precise radial positioning. Next, the upper pressure plate and disc spring assembly are sequentially stacked, and the clamping nut is tightened to the predetermined torque value, causing the disc spring assembly to generate a uniform axial elastic clamping force, forming an axial constraint on the drive gear. After assembly, the entire assembly is placed in a heat treatment furnace for heating. During quenching, the quenching oil flows rapidly through the 60° radially arranged semi-circular upper and lower guide grooves, significantly improving the cooling uniformity of the drive gear and effectively reducing thermal stress and deformation risks. After treatment, the workpiece can be disassembled by loosening the clamping nut in the reverse direction.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Simplified equipment structure: The modular design with six-point radial positioning and disc spring clamping reduces the number of parts and lowers maintenance costs.

[0014] 2. Improved cooling uniformity: The upper and lower guide grooves arranged in a 60° radial pattern guide the quenching oil to flow quickly and evenly, improving the cooling uniformity of the drive gear.

[0015] 3. Enhanced deformation control capability: The disc spring assembly generates axial elastic clamping force, and the limiting component performs radial positioning, forming a balanced force constraint, which effectively suppresses heat treatment deformation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an anti-deformation device for heat treatment of drive gears according to this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the lower pressure plate of this utility model.

[0018] In the diagram: 1. Base; 2. Support shaft; 3. Lower pressure plate; 31. Lower guide groove; 32. Screw hole; 4. Drive gear; 5. Upper pressure plate; 6. Disc spring assembly; 7. Compression nut; 8. Screw; 81. Positioning block; 82. Handwheel; 9. Upper guide groove; 10. External thread. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Example: like Figures 1-2 As shown, a deformation-preventing device for heat treatment of drive gears includes a base 1. A support shaft 2 is centrally located at the upper end of the base 1. Along the axial direction of the support shaft 2, from bottom to top, a lower pressure plate 3, a drive gear 4, an upper pressure plate 5, a disc spring assembly 6, and a clamping nut 7 are sequentially installed. Multiple limiting components are evenly distributed along the edge of the lower pressure plate 3, and these limiting components abut against the root circle of the drive gear 4 to achieve radial positioning. Radial upper guide grooves 9 and lower guide grooves 31 are respectively formed on the contact surfaces of the upper pressure plate 5 and the lower pressure plate 3 with the drive gear 4.

[0021] The limiting component includes a screw 8, a positioning block 81, and a handwheel 82. Multiple screw holes 32 are provided on the circumference of the lower pressure plate 3. A screw 8 is installed in each screw hole 32. A positioning block 81 that abuts against the drive gear 4 is provided at one end of the screw 8, and a handwheel 82 is provided at the other end of the screw 8.

[0022] Specifically, there are 6 limiting components. The cross-sections of the upper guide channel 9 and the lower guide channel 31 are both semi-circular, and the included angle between adjacent upper guide channels 9 is 60°, and the included angle between adjacent lower guide channels 31 is 60°.

[0023] In addition, mounting holes are provided in the center of both the upper pressure plate 5 and the lower pressure plate 3, and the support shaft 2 slides through the mounting holes of the upper pressure plate 5 and the lower pressure plate 3 respectively. The upper end of the support shaft 2 is provided with an external thread 10, and the clamping nut 7 is engaged with the external thread 10.

[0024] The working principle of this utility model's anti-deformation device for heat treatment of drive gears is as follows: In use, first, the lower pressure plate 3 is fitted onto the support shaft 2 and placed on the base 1. Then, the drive gear 4 is placed on the surface of the lower pressure plate 3. By rotating the handwheel 82 of the six limiting components, the screw 8 drives the positioning block 81 to radially press against the root circle of the drive gear 4, achieving precise radial positioning. Next, the upper pressure plate 5 and the disc spring assembly 6 are sequentially stacked, and the clamping nut 7 is tightened to the predetermined torque value, causing the disc spring assembly 6 to generate a uniform axial elastic clamping force, forming an axial constraint on the drive gear 4. After assembly, the entire assembly is placed in a heat treatment furnace for heating. During quenching, the quenching oil flows rapidly through the semi-circular upper guide groove 9 and lower guide groove 31 arranged radially at 60°, significantly improving the cooling uniformity of the drive gear 4 and effectively reducing thermal stress and deformation risk. After treatment, the workpiece can be disassembled by loosening the clamping nut 7 in the reverse direction.

[0025] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A deformation-resistant device for heat treatment of drive gears, comprising a base (1), characterized in that: The base (1) has a support shaft (2) at the center of its upper end. Along the axial direction of the support shaft (2), from bottom to top, a lower pressure plate (3), a drive gear (4), an upper pressure plate (5), a disc spring assembly (6), and a clamping nut (7) are installed in sequence. Multiple limiting components are evenly distributed on the edge of the lower pressure plate (3). The limiting components abut against the root circle of the drive gear (4) to achieve radial positioning. Radial upper guide grooves (9) and lower guide grooves (31) are respectively opened on the contact surfaces of the upper pressure plate (5) and the lower pressure plate (3) with the drive gear (4).

2. The anti-deformation device for heat treatment of drive gears according to claim 1, characterized in that: The limiting component includes a screw (8), a positioning block (81), and a handwheel (82). The lower pressure plate (3) has multiple screw holes (32) on its circumference. Each screw hole (32) is equipped with a screw (8). One end of the screw (8) is provided with a positioning block (81) that abuts against the drive gear (4), and the other end of the screw (8) is provided with a handwheel (82).

3. The anti-deformation device for heat treatment of drive gears according to claim 1, characterized in that: The upper pressure plate (5) and the lower pressure plate (3) are both provided with mounting holes in their centers, and the support shaft (2) slides through the mounting holes of the upper pressure plate (5) and the lower pressure plate (3) respectively.

4. The anti-deformation device for heat treatment of drive gears according to claim 1, characterized in that: The upper end of the support shaft (2) is provided with an external thread (10), and the clamping nut (7) is engaged with the external thread (10).

5. The anti-deformation device for heat treatment of drive gears according to claim 1, characterized in that: The number of limiting components is 6.

6. The anti-deformation device for heat treatment of drive gears according to claim 1, characterized in that: The cross-sections of the upper guide groove (9) and the lower guide groove (31) are both semi-circular, and the included angle between adjacent upper guide grooves (9) is 60°, and the included angle between adjacent lower guide grooves (31) is 60°.

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