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Three-dimensional high-frequency flutter cold extrusion die

A cold extrusion and flutter technology, applied in the direction of metal extrusion dies, etc., can solve the problems of insufficient dimensional accuracy and output exciting force, uncontrollable amplitude, and inability to realize cold extrusion forming of difficult-to-form parts, so as to improve metal Streamline distribution, controllable frequency, and high output force

Inactive Publication Date: 2017-01-04
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the fact that the existing cold extrusion die cannot realize the cold extrusion forming of "difficult-to-form parts" and the dimensional accuracy cannot meet the requirements, and the existing vibration mode based on hydraulic drive mode has insufficient output excitation force and uncontrollable amplitude To solve the problem, provide a three-dimensional high-frequency flutter cold extrusion die that can provide sufficient extrusion force in three directions, vibration frequency and amplitude controllable, and can ensure the forming accuracy of parts

Method used

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  • Three-dimensional high-frequency flutter cold extrusion die

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing:

[0024] Such as Figure 1~4As shown, a three-dimensional high-frequency flutter cold extrusion die includes a forming mechanism, the forming mechanism includes a punch 7 and a die 9, the punch 7 is installed in the punch fixing block 6, and the punch fixing block 6 is connected to the punch by bolts. The flange connection block 5 of the punch directly above is connected to the upper template 4, the die 9 located directly below the punch is installed in the die fixing block 8, the die 9 is in contact with the die seat 17 directly below, and the die seat 17 is in contact with the die flange connecting block 14 directly below, the die fixing block 8 and the die flange connecting block 14 are connected by bolts, the die flange connecting block 14 is connected with the lower formwork 13 by bolts, and the lower formwork 13 passes through The bolt is connected with the lower mold ...

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Abstract

The invention discloses a three-dimensional high-frequency flutter cold extrusion die, comprising a forming mechanism, a stripping mechanism, a female die flutter generating mechanism and a male die flutter generating mechanism; the female die flutter generating mechanism comprises an X-axis flutter generating mechanism, a Y-axis flutter generating mechanism and a connecting mechanism, and the male die flutter generating mechanism comprises a Z-axis flutter generating mechanism and a Z-axis connecting plate; the X-axis flutter generating mechanism and the Y-axis flutter generating mechanism are controlled by two different high-frequency valves, and the two high-frequency valves emit coprime frequency, thus interaction of both directional flutters is avoided. The three-dimensional high-frequency flutter cold extrusion die can provide independent high-frequency micro-amplitude controllable flutters of the X-axis, the Y-axis and the Z-axis; by 'volume benefit' and 'surface benefit' of flutter plastic forming, accuracy of formed parts is ensured while forming extrusion force, friction force, metal flow stress and the like are decreased, uniformity of metal deformation is achieved, metal streamline distribution is improved, and grain is refined, so that end product quality is improved.

Description

technical field [0001] The invention relates to a cold extrusion die, in particular to a three-dimensional high-frequency fluttering cold extrusion die. Background technique [0002] As a precision plastic forming technology, cold extrusion technology has the advantages of "high quality, high output, low consumption, and low cost". It is an important symbol and reflection of a country's automobile industry level, industrialization level and even modernization level. However, when the product is produced by cold extrusion, the deformation force of the blank is significantly increased by the action of three-dimensional compressive stress. At the same time, due to the requirements for forming accuracy, the material has a large flow stress at room temperature, and its shape is relatively complicated. Die and blank The friction force between them also hinders the flow of the metal blank. The greater the friction force is in the final stage of forming, the more difficult it is for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C25/02B21C35/02
CPCB21C25/02
Inventor 杨庆华占伟涛张培帅王志恒鲍官军胡新华
Owner ZHEJIANG UNIV OF TECH
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