A rack heat treatment deformation prevention tooling

Abstract

The utility model discloses a kind of tool for preventing rack heat treatment deformation, including the base for installing rack, the limiting plate of being arranged in the base, the profile limiting component is fixedly arranged in the limiting plate side, the profile limiting component is matched with the rack, the profile limiting component is provided with the compression assembly for compressing the rack, the compression assembly is connected with the profile limiting component, the rack is connected with the base.The welding process of the utility model reduces the influence of welding shrinkage deformation, improves welding quality, increases rigid support before welding, increases strength, reduces welding deformation, adopts tempering heat treatment after welding, to eliminate cavity weld joint welding residual stress, improve the machining precision after product welding.

Description

Technical Field

[0001] This utility model relates to the field of rack processing, specifically to a tooling for preventing rack deformation during heat treatment. Background Technology

[0002] Racks are crucial transmission components in medical devices. The meshing of racks and gears drives the shielding blocks within the device to move along an arc. Racks require high machining precision during processing. Conventionally, racks are first forged into a single gear ring, then heat-treated as a whole, and finally cut into four racks. However, heat-treating the entire gear ring causes distortion and loss of precision. Furthermore, heat-treating the entire gear ring requires large heat treatment equipment, resulting in high costs. Therefore, cutting the gear ring into racks before heat treatment reduces costs, but deformation during heat treatment is difficult to control, leading to significant deformation. Thus, a new technical solution is urgently needed to address at least one of these technical problems. Summary of the Invention

[0003] The purpose of this invention is to provide a tooling for preventing rack deformation during heat treatment. The rack is fixed by a base, and the limiting plate and the contour limiting component work together to limit the arc deformation direction of the rack. The clamping component clamps the rack and controls the planar deformation of the rack. This can reduce the heat treatment deformation of the rack and improve the accuracy of the rack.

[0004] To achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by this utility model is: a tooling for preventing rack deformation during heat treatment, characterized in that it includes a base for mounting the rack, a limiting plate disposed on the base, a contour limiting component fixedly disposed on one side of the limiting plate, the contour limiting component matching the rack, the contour limiting component being provided with a clamping component for pressing the rack, the clamping component being connected to the contour limiting component, and the rack being connected to the base.

[0005] As a preferred technical solution, the contour limiting component includes a plurality of upper contour limiting blocks, which match the outer contour surface of the rack.

[0006] As a preferred technical solution, the contour limiting component includes a plurality of lower contour limiting blocks, which match the inner contour surface of the rack.

[0007] As a preferred technical solution, one lower contour limiting block is provided below each upper contour limiting block, and the rack is located between the upper contour limiting block and the lower contour limiting block.

[0008] As a preferred technical solution, the lower side of the upper contour limiting block is an arc surface, and the upper side of the lower contour limiting block is an arc surface.

[0009] As a preferred technical solution, the clamping assembly includes multiple clamping blocks, which are correspondingly arranged with the upper contour limiting block and the lower contour limiting block.

[0010] As a preferred technical solution, the number of upper contour limiting blocks is 6, which are arranged from left to right as the first to the sixth upper contour limiting blocks. The first to the sixth upper contour limiting blocks are arranged in parallel and spaced apart, and are arranged along the upper contour surface of the rack. The number of lower contour limiting blocks is 6, which are arranged from left to right as the first to the sixth lower contour limiting blocks. The first to the sixth lower contour limiting blocks are arranged in parallel and spaced apart, and are arranged along the lower contour surface of the rack. The number of pressure blocks is 6, which are arranged from left to right as the first to the sixth pressure blocks.

[0011] As a preferred technical solution, the first pressing block and the sixth pressing block are detachably connected to the first upper contour limiting block and the sixth upper contour limiting block, respectively.

[0012] As a preferred technical solution, the upper parts of the second to fifth pressing blocks are detachably connected to the second to fifth upper contour limiting blocks, and the lower parts of the second to fifth pressing blocks are detachably connected to the second to fifth lower contour limiting blocks.

[0013] As a preferred technical solution, locking bolts are detachably inserted at both ends of the rack, and the base is connected to the rack through the locking bolts.

[0014] The beneficial effects of this utility model are:

[0015] 1) The rack is fixed by the base, and the limiting plate and the contour limiting component work together to limit the arc deformation direction of the rack. The clamping component clamps the rack and controls the planar deformation of the rack. This can reduce the heat treatment deformation of the rack and improve the accuracy of the rack.

[0016] 2) The upper contour limiting block and the lower contour limiting block work together to control the deformation of the inner and outer arcs of the rack, resulting in good deformation control.

[0017] 3) Multiple pressure blocks provide good clamping effect on the rack, enabling better control of the rack's planar deformation;

[0018] 4) The pressure block is detachable, making it easy to install and remove. Attached Figure Description

[0019] Figure 1 This is a three-dimensional drawing of the tooling provided in one embodiment of the present invention;

[0020] Figure 2 This is a structural diagram of a limiting plate provided in one embodiment of the present invention;

[0021] exist Figures 1-2In the middle, 1. rack; 2. base; 3. limiting plate; 4. first upper contour limiting block; 5. second upper contour limiting block; 6. third upper contour limiting block; 7. fourth upper contour limiting block; 8. fifth upper contour limiting block; 9. sixth upper contour limiting block; 10. first lower contour limiting block; 11. second lower contour limiting block; 12. third lower contour limiting block; 13. fourth lower contour limiting block; 14. fifth lower contour limiting block; 15. sixth lower contour limiting block; 16. first pressure block; 17. second pressure block; 18. third pressure block; 19. fourth pressure block; 20. fifth pressure block; 21. sixth pressure block; 22. locking bolt. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "head," "tail," "top," "bottom," "left," "right," "front," "rear," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] Please see Figures 1-2 One embodiment of this utility model provides a device for preventing heat treatment deformation of a rack 1, including a base 2 for mounting the rack 1 and a limiting plate 3 disposed on the base 2. A contour limiting component is fixedly disposed on one side of the limiting plate 3. The contour limiting component matches the rack 1. The contour limiting component is provided with a clamping component for pressing the rack 1. The clamping component is connected to the contour limiting component. The rack 1 is connected to the base 2. The rack 1 is fixed by the base 2. The limiting plate 3 and the contour limiting component cooperate to limit the arc deformation direction of the rack 1. The clamping component presses the rack 1 tightly, controlling the planar deformation of the rack 1. This can reduce the heat treatment deformation of the rack 1 and improve the accuracy of the rack 1.

[0025] like Figures 1-2As shown, the contour limiting component includes multiple upper contour limiting blocks. The upper contour limiting blocks match the outer contour surface of the rack 1. Specifically, there are 6 upper contour limiting blocks, which are arranged from left to right as the first upper contour limiting block 4, the second upper contour limiting block 5, the third upper contour limiting block 6, the fourth upper contour limiting block 7, the fifth upper contour limiting block 8, and the sixth upper contour limiting block 9. The first to sixth upper contour limiting blocks 9 are arranged in parallel and spaced apart, and are arranged along the upper contour surface of the rack 1. The upper contour limiting blocks are connected to the limiting blocks to form an integral structure. The rack 1 will deform in the arc direction during heat treatment, that is, it will deform in the inner and outer radial directions. The upper contour limiting plate 3 abuts against the outer contour surface of the rack 1 to reduce the deformation of the rack 1 in the outer radial direction.

[0026] like Figures 1-2 As shown, the contour limiting component includes multiple lower contour limiting blocks. The lower contour limiting blocks match the inner contour surface of the rack 1. Specifically, there are 6 lower contour limiting blocks, which are arranged from left to right as the first lower contour limiting block 10, the second lower contour limiting block 11, the third lower contour limiting block 12, the fourth lower contour limiting block 13, the fifth lower contour limiting block 14, and the sixth lower contour limiting block 15. The first to sixth lower contour limiting blocks 15 are arranged in parallel and spaced apart, and are arranged along the lower contour surface of the rack 1. One lower contour limiting block is arranged below each upper contour limiting block. The rack 1 is located between the upper contour limiting block and the lower contour limiting block. The lower contour limiting block is connected to the limiting plate 3 to form an integral structure. The lower contour limiting block abuts against the inner contour surface of the rack 1 to reduce the deformation of the rack 1 in the inner radial direction.

[0027] like Figures 1-2 As shown, the lower side of the upper contour limiting block is an arc surface, the upper side of the lower contour limiting block is an arc surface, and the rack 1 is arc-shaped. The arc surface matches the outer contour surface and inner contour surface of the rack 1, which can better fit with the rack 1 and ensure the stability of controlling the deformation of the rack 1.

[0028] like Figures 1-2 As shown, the clamping assembly includes multiple clamping blocks, which are correspondingly arranged with the upper contour limiting block and the lower contour limiting block. Specifically, there are 6 clamping blocks, which are arranged from left to right as the first clamping block 16, the second clamping block 17, the third clamping block 18, the fourth clamping block 19, the fifth clamping block 20 and the sixth clamping block 21, which can clamp the rack 1 and reduce the deformation of the rack 1 in the axial plane direction.

[0029] like Figures 1-2 As shown, the first pressing block 16 and the sixth pressing block 21 are L-shaped. The first pressing block 16 and the sixth pressing block 21 are detachably connected to the first upper contour limiting block 4 and the sixth upper contour limiting block 9 respectively by locking bolts 22, which facilitates installation and disassembly.

[0030] like Figures 1-2 As shown, the second to fifth pressure blocks 20 are U-shaped. The upper parts of the second to fifth pressure blocks 20 are detachably connected to the second to fifth upper contour limiting blocks 8 by locking bolts 22, and the lower parts of the second to fifth pressure blocks 20 are detachably connected to the second to fifth lower contour limiting blocks 14 by locking bolts 22, which facilitates installation and disassembly.

[0031] like Figures 1-2 As shown, locking bolts 22 are detachably inserted at both ends of the rack 1. The base 2 is connected to the rack 1 through the locking bolts 22. The locking bolts 22 can stretch the rack 1 to a certain extent, thereby facilitating the shaping of the rack 1.

[0032] The above embodiments are merely descriptions for clearly illustrating the present utility model, and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all implementations here, and the obvious variations or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. A tooling for preventing rack deformation during heat treatment, characterized in that... The device includes a base for mounting a rack, a limiting plate disposed on the base, a contour limiting component fixedly disposed on one side of the limiting plate, the contour limiting component matching the rack, the contour limiting component being provided with a clamping component for clamping the rack, the clamping component being connected to the contour limiting component, and the rack being connected to the base.

2. The tooling for preventing rack deformation during heat treatment according to claim 1, characterized in that, The contour limiting component includes multiple upper contour limiting blocks, which match the outer contour surface of the rack.

3. The tooling for preventing rack deformation during heat treatment according to claim 2, characterized in that, The contour limiting component includes multiple lower contour limiting blocks, which match the inner contour surface of the rack.

4. The tooling for preventing rack deformation during heat treatment according to claim 3, characterized in that, One lower contour limiting block is provided below each upper contour limiting block, and the rack is located between the upper contour limiting block and the lower contour limiting block.

5. The tooling for preventing rack deformation during heat treatment according to claim 4, characterized in that, The lower side of the upper contour limiting block is an arc surface, and the upper side of the lower contour limiting block is an arc surface.

6. The tooling for preventing rack deformation during heat treatment according to claim 5, characterized in that, The clamping assembly includes multiple clamping blocks, which are correspondingly arranged with the upper contour limiting block and the lower contour limiting block.

7. The tooling for preventing rack deformation during heat treatment according to claim 6, characterized in that, The number of upper contour limiting blocks is 6, which are arranged from left to right as the first upper contour limiting block to the sixth upper contour limiting block. The first upper contour limiting block to the sixth upper contour limiting block are arranged in parallel and spaced apart, and are arranged along the upper contour surface of the rack. The number of lower contour limiting blocks is 6, which are arranged from left to right as the first upper contour limiting block to the sixth lower contour limiting block. The first upper contour limiting block to the sixth lower contour limiting block are arranged in parallel and spaced apart, and are arranged along the lower contour surface of the rack. The number of pressure blocks is 6, which are arranged from left to right as the first pressure block to the sixth pressure block.

8. The tooling for preventing rack deformation during heat treatment according to claim 7, characterized in that, The first pressing block and the sixth pressing block are detachably connected to the first upper contour limiting block and the sixth upper contour limiting block, respectively.

9. The tooling for preventing rack deformation during heat treatment according to claim 7, characterized in that, The upper parts of the second to fifth pressure blocks are detachably connected to the second to fifth upper contour limiting blocks, and the lower parts of the second to fifth pressure blocks are detachably connected to the second to fifth lower contour limiting blocks.

10. The tooling for preventing rack deformation during heat treatment according to claim 1, characterized in that, Locking bolts are detachably inserted at both ends of the rack, and the base is connected to the rack via the locking bolts.

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