Thin-walled cylinder precise shape control equipment

Abstract

The invention provides thin-walled cylinder precise shape control equipment. The equipment comprises a rotary supporting table used for supporting a workpiece in the shape correcting process and rotating the workpiece in the cooling shrinkage process, precise shape control inner tube molds uniformly distributed around the circle center of the rotary supporting table and are used for providing an arc surface required during shape control and shape correction force conduction during working, a hydraulic push cylinder which is connected with the precise shape control inner tube molds and is usedfor precise precise shape control inner tube mold micro-distance movement, a guide device which is arranged on a piston rod of the hydraulic push cylinder and is used for guiding the axial movement ofthe hydraulic push cylinder and positioning the guide direction, and a support which is annularly mounted on the ground by taking the circle center of the rotary supporting table as the center and isused for fixing the hydraulic push cylinder and the guide device. The equipment is used for precisely controlling the shape of the ultra-large-diameter thin-walled cylinder, the shape control precision is high, the wall thickness is not reduced, the residual stress after precise shape control is small, and subsequent procedures can be simplified, and meanwhile, the taper of an inner tube mold isadjustable and can adapt to precise shape control of workpieces such as conical barrels.

Description

technical field [0001] The invention relates to a shape-controlling device for a thin-walled cylinder, in particular to a precise shape-controlling device for a super-large-diameter thin-walled cylinder. Background technique [0002] Thin-wall cylindrical parts with super large diameter are widely used in petroleum and petrochemical, marine equipment and other fields, and the processing methods can be carried out by ring rolling and heat treatment. During the cooling process after ring rolling and heat treatment, the cylinder will be irregularly deformed, so that the size of the workpiece cannot meet the use requirements. The commonly used orthopedic methods for thin-walled cylinders include press point pressure correction, four-roller rounding machine shape correction and expansion shape correction. [0003] The above-mentioned shape correction methods are all mechanical shape correction methods, which can basically meet the requirements for workpieces with small structura...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned shape correction methods are all mechanical shape correction methods, which can basically meet the requirements for workpieces with small structural size, small deformation degree, and low overall precision requirements.

However, for super-large-diameter thin-walled cylindrical parts, due to the existence of principle defects such as irregular deformation that is difficult to correct, resulting in thinning of the wall thickness of the cylinder, new deformation caused by excessive stress, and difficulty in manufacturing corresponding processing equipment, the above methods can be used. It is difficult to achieve precise shape control of the cylinder, which cannot meet the size and performance requirements of the product

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