Method for the production of axially symmetrical workpieces with or without a toothed profile

A workpiece and contour technology, applied in the field of chipless production, can solve the problems of complex production process, expanding work consumption, etc., and achieve the effect of reducing cost, favorable fiber direction and reducing requirements

Inactive Publication Date: 2008-08-20
CARL DAN PEDDINGHAUS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Here, all material volumes to be formed have to be placed between the forming dies from the start and have to be preformed accordingly, which additionally increases the work effort
Furthermore, during axial die rolling, the mounting angle of the die must be kept within a precisely controlled range, while other parameters, such as rolling speed, must also be taken into account, which naturally further complicates the production process

Method used

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  • Method for the production of axially symmetrical workpieces with or without a toothed profile

Examples

Experimental program
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Embodiment Construction

[0020] Figure 1 depicts a simplified construction of a press tool showing a die 1 and a press tool 2 placed thereon. The die has a bore 11 through its central axis, a tooth profile 12 and a boundary 13 on the side facing the press tool. The press tool rotates at a speed n, while the distance a between the press tool and the die can be adjusted by the feed movement. Under the action of the punch (not shown in the figure), the raw material 3 continuously enters the hole 11 (direction of arrow S) at a feed speed, from where the raw material is extruded to the die profile 12 and the press tool 2 in the space between. Through said pressing action, and the rotary movement of the presser acting on the raw material, the raw material flows radially outwards along the contour of the die until the raw material finally fills the shell of the die based on the boundary 13, and A finished workpiece is thus produced. Here too, the distance a can be adapted to the amount of raw material in ...

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Abstract

Disclosed is a method for producing substantially axially symmetrical workpieces by shaping a starting material (3) with the aid of a die (1) and a rotatable tool (2), the die (1) being provided with a bore (11) along the central axis thereof. The inventive method comprises the following steps: the starting material (3) is introduced through the bore (11) of the die (1); and the starting material (3) is pressed in between the die (1) and the rotating tool (2) such that the starting material (3) flows outward from the central axis according to the contour of the die (1).

Description

technical field [0001] The invention relates to a method for the chipless production of substantially rotationally symmetrical workpieces, in particular workpieces with toothed contours, and also to workpieces produced by the method. Background technique [0002] The methods known hitherto from the prior art for the production of rotationally symmetrical workpieces, such as ring gears, by chipless forming, are primarily characterized by the use of costly tools. As a result, high deformation forces occur during the deformation process, which induce stresses in the mold and lead to locally reaching extreme notch stress peaks, so that the service life of the mold is negatively affected and the costs are thus increased. [0003] An example of such a conventional method is called axial die rolling (Axialgesenkwalzen). Here, all material volumes to be formed must be placed between the forming dies from the start and must be correspondingly preformed, which additionally increases ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J9/02B21J5/08B21J5/02B21K1/30
CPCB21K1/30B21J5/063B21J5/02B21J5/08B21J9/025
Inventor M·普鲁萨克
Owner CARL DAN PEDDINGHAUS
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