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Cutting-free cold extruding forming method for worm

A molding method and cold extrusion technology, applied in other manufacturing equipment/tools, manufacturing tools, etc., can solve the problems of low processing efficiency, easy wear of cutting tools, complicated procedures, etc., to improve production efficiency, improve strength, and simple procedures Effect

Inactive Publication Date: 2006-06-07
董智德
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The existing worms are all formed by cutting. During the cutting process, the metal fiber structure is cut off, which reduces the strength of the worm and greatly weakens the service life of the worm. The cutting tool is easy to wear during processing, resulting in dimensional errors of the worm, Low precision; complex process and low processing efficiency; metal between threads is removed, resulting in waste of resources and high cost

Method used

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Embodiment Construction

[0014] The process of the present invention utilizes the plasticity of metal materials to carry out non-cutting cold extrusion processing to manufacture worms. The process steps of the present invention are described in detail below: first, blanking, that is, using a shearing machine to cut metal round bars into billets according to the required length and size The second step is turning, using a lathe to rough the outer circle of the blank, and the fine grinding allowance should be taken in advance; the third step is annealing, using an annealing furnace to heat treat the turned blank, and the blank Heating to an appropriate temperature, adopting different holding times according to the material and workpiece size, and then cooling slowly to improve the cutting performance of the blank, increase the plasticity of the blank, reduce extrusion resistance, and prolong the service life of the roller; the fourth step, Fine grinding, using a centerless grinder to finely grind the out...

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Abstract

The present invention aims at providing cutting-free cold extrusion process of forming worm, and the plasticity of metal material is utilized in forming worm. The blank is rolled in a thread roller to form corresponding worm thread through plastic deformation. The cutting-free cold extrusion process produces no cutting scraps and no breaking of the fiber tissue in metal, and has material saving, high worm strength, simple process, high production efficiency and low cost.

Description

technical field [0001] The invention relates to a non-cutting cold extrusion forming method of a worm. Background technique [0002] The existing worms are all formed by cutting. During the cutting process, the metal fiber structure is cut off, which reduces the strength of the worm and greatly weakens the service life of the worm. The cutting tool is easy to wear during processing, causing the dimensional error of the worm, The precision is low; the process is complex and the processing efficiency is low; the metal between the threads is removed, resulting in waste of resources and high cost. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a non-cutting cold extrusion forming method for the worm, which improves the strength of the worm, saves materials by adopting the non-cutting process, simplifies the processing procedure, and improves labor efficiency. [0004] The present invention adopts following technica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/14B23P23/04
Inventor 董智德
Owner 董智德
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