A method for adjusting the amount of misalignment of rollers during misalignment spinning of cylindrical parts

A technology of staggered pitch spinning and adjustment method, which is applied in the field of manufacturing thin-walled rotary metal components, which can solve the problems of poor overall accuracy of the workpiece, unstable deformation during spinning, and shortened effective length of the workpiece, and achieve straightness Improve and improve the forming accuracy and forming quality, and avoid the effect of distortion

Active Publication Date: 2020-06-16
XIAN AEROSPACEMOTOR MACHINE FACTORY
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Problems solved by technology

[0008] In order to overcome the problems existing in the prior art that the spinning wheels cannot be guaranteed to be in contact with the blank at the same time when spinning, the deformation is unstable when spinning, the overall precision of the workpiece is deteriorated, and the effective length of the workpiece is shortened, the present invention proposes A method for adjusting the amount of staggered wheel in staggered spinning of cylindrical parts

Method used

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  • A method for adjusting the amount of misalignment of rollers during misalignment spinning of cylindrical parts
  • A method for adjusting the amount of misalignment of rollers during misalignment spinning of cylindrical parts
  • A method for adjusting the amount of misalignment of rollers during misalignment spinning of cylindrical parts

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Embodiment 1

[0043] In this embodiment, a high-strength steel thin-walled cylindrical piece is processed by the two-roller staggered-pitch spinning method. According to the definition of the ULSAB project team of the World Iron and Steel Association, steel with a yield strength of 210-550Mpa is defined as high-strength steel.

[0044] The axial offset refers to the distance between the apexes of the rounded corners of axially adjacent rollers when two or more rollers are used for spinning.

[0045] The structure of the workpiece processed in this embodiment is as Figure 4 shown. The concrete process of this embodiment is:

[0046] The first step is to prepare spinning blanks. The blank is a 30CrMnSiA high-strength steel cylinder. The thickness of the spinning blank is H, h is the thickness of the blank at the spinning end, the height of the outer round chamfer of the cross section of the spinning end is H-h, and the angle between the chamfering slope and the horizontal plane is α.

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Abstract

The invention relates to a method for adjusting spinning roller offset distance in cylindrical part offset spinning processing. On the basis of fully considering the force balance of a blank, the spinning roller axial offset distance is accurately determined according to the shape and size of a spinning blank and the reduction in the first pass so as to overcome the defects of the prior art, blindness and uncertainty in adjusting the spinning roller axial offset distance are avoided, it is ensures that spinning rollers can be in contact with the blank at the same time when starting spinning, and the stability and forming precision of offset distance spinning of the cylindrical part are improved. According to the method for adjusting the spinning roller offset distance in the cylindrical part offset spinning processing, axial adjustment is carried out on the spinning rollers, then the spinning is carried out, and the results show that the straightness of the cylindrical part is improvedby about 10%, the wall thickness difference is reduced by about 5%, and the effective use length is increased by about 5%.

Description

technical field [0001] The invention relates to a method for adjusting the staggered distance of a rotary wheel during staggered spinning of a cylindrical part, and belongs to the technical field of manufacturing thin-walled rotary metal components. Background technique [0002] Spinning forming technology is an advanced manufacturing technology. It rotates the stress point of the workpiece from point to line, and then from line to surface. At the same time, a certain pressure is applied in a certain direction to make the metal material deform and flow in a specific direction. Thereby completing the workpiece processing. Spinning technology is an advanced manufacturing technology that combines the technical characteristics of forging, extrusion, drawing, ring rolling, and rolling. Compared with turning processing, spinning technology solves the problem of low rigidity in the processing of thin-walled rotary parts. , large vibration, low precision and other problems, it has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/16
Inventor 杨延涛写旭曹学文杨东浩杨建峰赵琳瑜王少奇牟少正王鹏伟白小雷
Owner XIAN AEROSPACEMOTOR MACHINE FACTORY
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