Heat treatment anti-deformation device for thin-wall annular piece

Abstract

The invention provides a heat treatment anti-deformation device for a thin-wall annular piece. The heat treatment anti-deformation device can control the deformation amount of the thin-wall annular piece in heat treatment within a specified range. The inner diameter of an annular clamp body is larger than the outer diameter of the thin-wall annular piece, and the axial width of the annular clamp body is also larger than the axial width of the thin-wall annular piece. Three or more radial positioning mechanisms distributed uniformly along the circumference are arranged on the annular clamp body. Each radial positioning mechanism comprises one or more radial through holes, positioning blocks, positioning connecting pieces and positioning adjusting pieces, wherein the annular clamp body is provided with the radial through holes, the positioning blocks, the positioning connecting pieces and the positioning adjusting pieces. Each positioning block is an arc strip-shaped block with the radian of the outer wall is the same as the radian of the inner wall of the annular clamp body, the radian of the inner wall is the same as the radian of the outer wall of the thin-wall annular piece and the axial width corresponding to the axial width of the thin-wall annular piece, is located between the annular clamp body and the thin-wall annular piece and connected with the inner end of the corresponding positioning connecting piece. The positioning connecting pieces are assembled in the radial through holes, and the outer ends of the positioning connecting pieces are connected with the positioning adjusting pieces located outside the periphery of the annular clamp body in a mode that the radial positions are capable of being adjusted.

Description

technical field [0001] The invention relates to a processing device for thin-walled ring parts, in particular to a heat treatment anti-deformation device for thin-walled ring parts. Background technique [0002] In some mechanical equipment there is a thin-walled ring, see figure 1 , the diameter of the thin-walled ring 5 is relatively large, greater than 210 mm, the inner diameter is smaller than the outer diameter by about 21 mm, that is, the wall thickness is about 21 mm, and the inner wall is provided with internal teeth 5a with higher precision. In order to improve the rigidity of the thin-walled annular member 5, it is usually subjected to heat treatment after machining, for example, heat treatment such as nitriding. At present, the thin-walled annular part 5 is usually put directly into a nitriding device for heat treatment after machining. Since the wall thickness of the thin-walled ring member 5 is about 21mm, that is, the wall thickness is relatively thin and the...

AI Technical Summary

Problems solved by technology

Because the wall thickness of the thin-walled annular member 5 is about 21mm, that is, the wall thickness is relatively thin and the inner wall is provided with internal teeth 5a with high precision, that is, the structure is also relatively complicated.

Therefore, if the thin-walled annular member 5 is subjected to heat treatment such as nitriding in a free state, its inner and outer diameters will tend to expand, and the whole will be deformed. It may exceed the requirements of the specified range due to the overall deformation, resulting in a high scrap rate and high manufacturing cost of the thin-walled ring part 5

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