Shape correcting method and tool for large length-diameter ratio ultra-thin wall stainless steel cylindrical piece

Abstract

The invention discloses a shape correcting method for a large length-diameter ratio ultra-thin wall stainless steel cylindrical piece and a shape correcting tool for the large length-diameter ratio ultra-thin wall stainless steel cylindrical piece. The shape correcting tool comprises a tool body and a plugging head; and the tool body comprises an upper mold and a lower mold. The shape correcting method for the large length-diameter ratio ultra-thin wall stainless steel cylindrical piece uses the above shape correcting tool, and liquid is used by the method as force transmitting media; due to the joint effects of hydraulic force and a mold cavity, the ultra-thin wall cylindrical piece is subjected to shape correcting to form a product higher in straightness, roundness and precision. The method and tool have the beneficial effects that the product is good in quality and high in shape and size precision after shape correcting. The method and tool have the beneficial effects that the liquid filling shape correcting technology is adopted for the method and tool, shape correcting of the stainless steel ultra-thin wall cylindrical piece with the length-diameter ratio larger than 20 and the wall thickness smaller than 0.3 mm is achieved, the problem that the ultra-thin wall cylindrical piece cannot meet the straightness and roundness requirements easily is solved, the shape precision of the product is improved, reliable forming quality and a short production period are achieved, and the technological and economical benefits are obvious.

Description

technical field [0001] The present invention relates to the technical field of metal workpiece shape correction equipment, more specifically, to a method for shape correction of ultra-thin-wall stainless steel cylindrical parts with large aspect ratio and a shape correction method for ultra-thin-wall stainless steel cylindrical parts with large length-to-diameter ratio tooling. Background technique [0002] Shape correction is the correction of the shape of the formed product. Shape correction can not only improve product shape and dimensional accuracy, but also eliminate slip lines or residual stress, so as to improve product quality. [0003] According to the current situation of the manufacturing industry, under the existing processing technology level, it is difficult to ensure the shape accuracy of structural parts only through processing technology optimization, and it is often necessary to arrange a special shape correction process. Traditional shaping methods mainl...

AI Technical Summary

Problems solved by technology

For ultra-thin-walled cylindrical parts with a length-to-diameter ratio of greater than 20, a wall thickness of less than 0.3mm, and a straightness and roundness of less than 0.005mm, the conventional cylindrical part forming method is difficult to meet such high precision requirements, and the subsequent shape correction process must be passed. Achie

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