Method and device for precision-rolling and forming cylindrical part

Abstract

The invention relates to a method and a device for precision-rolling and forming a cylindrical part. The method comprises the following steps: S1, obtaining an annular blank, wherein the external diameter of the blank is equal to that of the cylindrical part; S2, putting the annular blank into an annular driving roller and enabling the outer wall of the blank to be closely attached onto the inner wall of the driving roller; S3, putting a core roller into the blank, wherein the diameter of the core roller is smaller than that of the blank; S4, enabling the driving roller and the blank to rotate around a central axis of the blank and enabling the core roller to do linear feed motion along the radial direction of the blank; and S5, when the axial height of the blank reaches a preset value, enabling the core roller to stop feeding and taking out the prepared cylindrical part. The device comprises the driving roller (1), the core roller (2), a rotating drive device and a linear drive device, wherein the driving roller (1) is annular; and the core roller (2) is cylindrical. The method and the device for precision-rolling and forming the cylindrical part have the beneficial effects that the cylindrical part is wholly formed at one time through continuous partial plastic deformation, and the effects of saving energy and materials, reducing the production cost and improving the production rate and the product performance effect are remarkable.

Description

technical field [0001] The invention relates to the field of roll forming of cylindrical parts, and more specifically, relates to a precision rolling forming method and device for cylindrical parts. Background technique [0002] Cylindrical parts are one of the key basic parts in the industry, and are widely used in machinery, automobiles, trains, ships, metallurgy, chemicals, energy, aerospace and other industrial fields. It not only requires high precision, but also requires high service performance and service life, and the key to meeting these requirements lies in the forming and manufacturing quality of cylindrical parts. At present, there are mainly two forming and manufacturing methods for cylindrical parts. The first is spinning forming, that is, the tube blank is directly spinning to form a cylindrical part. However, this method is only suitable for forming thin-walled cylindrical parts, and is powerless for thick-walled cylindrical parts. The second is to form s...

AI Technical Summary

Problems solved by technology

Although this method can manufacture thick-walled large cylindrical parts, it is time-consuming and laborious due to the increased welding process, and welding greatly reduces the service performance and service life of cylindrical parts, which cannot meet the requirements of high-performance cylindrical parts.

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