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Method and apparatus for spinning

A technology of rotating driving device and pressing roller, applied in the field of spinning and rolling, can solve the problems of high manufacturing cost and maintenance cost, and achieve the effects of reducing manufacturing cost and maintenance cost, uniform stress distribution, and reducing the weight of components

Inactive Publication Date: 2012-05-23
LEIFELD METAL SPINNING AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to form very long workpieces, such forming methods and devices necessitate the use of correspondingly long spinning mandrels, which are prohibitively expensive to manufacture and maintain

Method used

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  • Method and apparatus for spinning
  • Method and apparatus for spinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0078] Figures 1 to 9 A first embodiment of the method according to the invention is shown schematically.

[0079] figure 1 Shown is a first tubular workpiece 10 which is a blank to be formed. The workpiece 10 has a circular cross-section with an outer diameter D0 and a wall thickness S0. Figures 2 to 7 Shown is the workpiece 10 formed as Figure 8 The forming steps of the conical hollow part are shown in . Figure 9 A spinning mandrel 20 for forming is shown.

[0080] The spinning mandrel 20 is a rotationally symmetrical body and has a longitudinal axis. The longitudinal axis forms the axis of rotation of the spinning mandrel 20 , about which the spinning mandrel 20 is rotatably supported. On the right side of the respective illustrations, the spinning mandrel 20 has a free end 22, while on its left side a connecting end 24 is formed, via which the spinning mandrel 20 is connected to the clamping device of the machine and is possibly clamped. drive. A fundamental as...

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PUM

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Abstract

The invention relates to a method for ironing roller spinning, in which method a tubular workpiece (10) is arranged around a rolling mandrel (20), is set in rotation and is formed by setting at least one forming roller (40) against it. During the forming operation, the rolling mandrel is moved relative to the forming operation in the axial direction with respect to the workpiece. Furthermore, the invention relates to an apparatus (80) for ironing roller spinning a tubular workpiece with a rolling mandrel which can be arranged in the tubular workpiece, at least one forming roller for being set against and forming the workpiece, and a rotary drive for rotationally driving the workpiece. In the apparatus, the rolling mandrel is mounted such that it can be moved relative to the workpiece in the axial direction during the forming operation.

Description

technical field [0001] The invention relates to a spinning-rolling method according to the preamble of claim 1 . The invention further relates to a device for spinning and rolling tubular workpieces according to the preamble of claim 7 . Background technique [0002] In the known method, a tubular workpiece is arranged in rotation around a spinning mandrel and shaped by feeding it through at least one forming roller, wherein the workpiece is stretched. During stretching the wall thickness is reduced and the tubular workpiece is elongated by the movement of the material. [0003] DE 43 07 775 A1 discloses such a method. In this known method, the workpiece has a uniform inner contour which is predetermined by the outer contour of the spinning mandrel. [0004] The known device has a spinning mandrel which can be arranged in a tubular workpiece, at least one forming roller for feeding and shaping the workpiece, and a rotary drive for rotationally driving the workpiece. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/16B21B19/06
CPCB21D22/16B21C37/26B21D7/08B21D22/18
Inventor 贝内迪克特·尼利斯
Owner LEIFELD METAL SPINNING AG