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Method and device for shaping a workpiece

A workpiece and reshaping technology, applied in the direction of metal processing equipment, etc., can solve problems such as wall thickness and hub design restrictions, achieve effective hardening and forming, improve reliability, and reduce stretching or deep drawing.

Inactive Publication Date: 2015-03-04
LEIFELD METAL SPINNING AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] For the manufacture of hubs by pressing or splitting, there are restrictions regarding the wall thickness and the design of the hub

Method used

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  • Method and device for shaping a workpiece
  • Method and device for shaping a workpiece
  • Method and device for shaping a workpiece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0082] figure 1 and figure 2 The basic aspects of the method of the invention and the apparatus 10 of the invention are shown, shown non-cuttingly forming a drum or hub from a preferably substantially rotationally symmetrical workpiece 100, such as a circular sheet metal blank or preformed blank. example of .

[0083] The device 10 for reshaping a workpiece 100 comprises a die 20 having a substantially central entry hole 22 into which a punch 30 can be moved linearly in the axial direction. The die 20 and the punch 30 are adjusted to each other such that a stretching gap is formed therebetween into which the inner region 102 of the workpiece 100 is stretched when the punch 30 is driven into the die 20 .

[0084] Die 20 and punch 30 are mounted and can be driven for rotation about axis of rotation 12 on a machine tool (not shown). The workpiece 100 can be positioned on the mold 20 and the workpiece 100 can also be rotated about the mold 20 . Work piece 100 may also be cent...

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PUM

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Abstract

The method involves shaping a radial inner region (102) of a workpiece (100) by a stamper (30) and a die (20) by a deep-drawing process in an axial direction such that a shaped axial portion (106) is formed. The workpiece is rotated about the central axis during shaping of the radial inner region. A radial outer region (104) of the workpiece is pressurized by a shaping roller (40) during rotation of the workpiece and shaping of the radial inner region such that a material flow is produced towards the radial inner region, where the shaping roller is set towards the radial inner region. The shaped axial portion is designed as a bowl-shaped inner area or a sleeve-shaped inner area. An independent claim is also included for a device for shaping a workpiece.

Description

technical field [0001] The disclosure relates to a method and a device for reshaping a workpiece according to the preambles of claims 1 and 11 . Background technique [0002] The workpiece to be reshaped includes a central axis, a radially inner region and a radially outer region. In this method, the radially inner region of the workpiece is reshaped by drawing in the axial direction via a punch and die. This forms an axially shaped section. [0003] The apparatus includes a die and a punch for reshaping the radially inner region of the workpiece by stretching. [0004] A wide variety of shapes can be produced by reshaping methods and devices described by so-called drawing or deep-drawing processes. This usually results in a reduction in workpiece diameter. The stresses generated during reshaping, especially radial tensile and tangential compressive stresses, lead to particularly complex material flows. [0005] Shapes produced by drawing or deep drawing generally compr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/14B21D22/21
CPCB21D22/14B21D22/21B21D53/261
Inventor 贝内迪克特·尼利斯
Owner LEIFELD METAL SPINNING AG
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