Method for producing collar

A collar and wire technology, applied in the direction of manufacturing tools, heating/cooling equipment, forging/pressing/hammer devices, etc., can solve problems such as interruption, save time and cost, save setting time, and simplify supply

Inactive Publication Date: 2013-01-30
FORGING MFG KREFELD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But using this heat treatment technique to produce collars

Method used

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  • Method for producing collar
  • Method for producing collar

Examples

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Embodiment Construction

[0048]The method according to the invention relates to the manufacture of collars, ie annular collars, for example in the form of collars with flanges. The collar 2 that can be manufactured according to the method of the present invention is in figure 2 shown in . figure 2 The final design is shown but not to scale.

[0049] To manufacture follow figure 2 The final sleeve profile of the sleeve ring 2 illustrated in figure 2 The process schematically illustrated in Fig.

[0050] The starting point of the process is Blank 1. The blank 1 is prepared by separating a certain wire length from a coiled wire which is not in the figure 1 is further shown in . Separation of the coiled wire to prepare the billet 1 can be done eg by shearing.

[0051] Immediately thereafter, the blank 1 is flattened in a molding step 100 , ie the flat front surfaces 3 and 4 of the blank are formed. With this flattening step by molding, an intermediate product 5 is obtained.

[0052] Thereafte...

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Abstract

The invention relates to a method for producing a collar (2) only by cold forming. The method includes the steps of cutting a wire to separate a blank (1), flattening front surfaces (3 and 4) of the blank by die pressing (100), performing combination of tubular part extrusion (200), stamping (300) and hollow backward extrusion (400), optionally flattening (500) to form a peripheral circular groove (12), and performing reduction (600) binding. In order to increase a range of available materials and provide a minimal cycle period, the wire and/or a process intermediate product is heated to 200 DEG C online, especially 150 DEG C, before or during one or more process steps. The invention further provides a transverse transmission press to implement the method. The transverse transmission press is characterized by comprising an integrated heating unit.

Description

technical field [0001] The present invention relates to a method of manufacturing a collar from a wire, which is accomplished exclusively by cold forming and comprising the steps of: separating a blank from the wire by shearing, wherein the blank is used as a workpiece; leveling the front surface of the blank by molding; combining extrusion; stamping; hollow reverse extrusion; optionally flattened to form a peripheral annular groove; and reduced piping. The invention also relates to a transverse transfer press. Background technique [0002] Such a method, which is especially suitable for C15 steels, is disclosed in EP 2 151 289 B1. Although this previously known method is said to be also suitable to be performed with steel grades other than C15 steel, daily practice has not proven suitable for steels having a higher yield stress than C15 steel. This higher quality steel requires relatively high forces during cold forming. Significantly increased risk of stress fracture. ...

Claims

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Application Information

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IPC IPC(8): B21K21/00B21K29/00
Inventor 霍斯特・施特尔耶斯
Owner FORGING MFG KREFELD
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