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Flat extrusion container capable of reducing stress concentration of extrusion container

A stress concentration, flat extrusion cylinder technology, applied in the direction of metal extrusion forming tools, metal extrusion, metal processing equipment, etc., can solve the problems of stress concentration, easy cracking, etc., to reduce the maximum stress and reduce the cost of use. Effect

Inactive Publication Date: 2016-11-02
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a flat extrusion cylinder that can reduce the stress concentration of the extrusion cylinder, which solves the problems of stress concentration and easy cracking of the existing flat extrusion cylinder

Method used

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  • Flat extrusion container capable of reducing stress concentration of extrusion container
  • Flat extrusion container capable of reducing stress concentration of extrusion container
  • Flat extrusion container capable of reducing stress concentration of extrusion container

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] The structure of a flat extrusion cylinder that can reduce the stress concentration of the extrusion cylinder in the present invention is as follows: figure 1 As shown, it includes a circular inner sleeve 1, the middle part of the inner sleeve 1 is provided with an extrusion flat hole 2, the axis of the extrusion flat hole 2 is collinear with the axis of the inner sleeve 1, and the inner sleeve 1 is provided with an outer sleeve 3, and the outer sleeve 3 and the inner sleeve Interference fit between 1, the outer contour of jacket 3 is composed of two parallel straight lines and two elliptical arcs, its geometric shape is flat oval, and its outer contour is composed of two parallel straight lines and two arcs: two upper and lower The parallel line is connected with two left and right circular arc lines, and the left and right circular a...

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Abstract

The invention discloses a flat extrusion container capable of reducing the stress concentration of the extrusion container. The flat extrusion container comprises a circular inner sleeve, wherein a flat extrusion hole is formed in the middle of the inner sleeve, the axis of the flat extrusion hole is collinear with that of the inner sleeve, an outer sleeve is arranged outside the inner sleeve, the outer sleeve is in interference fit with the inner sleeve, the outer contour of the outer sleeve is formed by two parallel lines and two elliptic arcs, and the geometrical shape of the outer sleeve is flat elliptic. The outer sleeve is designed into a flat elliptic structure and is formed by the two parallel lines and the two elliptic arcs, and the magnitude of interference of the inner sleeve and the outer sleeve is 2 to 3.5 per thousand, so that the maximum stress when the whole flat extrusion container is operated can be preferably reduced, the maximum equivalent stress and equivalent strain on the inner sleeve can be effectively reduced for 10 to 20%, the extrusion container can be extruded for many times in harsh conditions, and the use cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of extrusion equipment, and in particular relates to a flat extrusion cylinder capable of reducing the stress concentration of the extrusion cylinder. Background technique [0002] The flat extrusion cylinder is the most effective tool for extruding large flat, wide and thin-walled sheets. Compared with the round extrusion cylinder, the flat extrusion cylinder has the superiority in geometric shape, because the shape of the flat extrusion cylinder is similar to the wall plate type material, so that the metal flow rate is smooth and uniform, the product quality is high, and the extrusion process The structure of the extrusion cylinder is also more compact, and the wear of the mold is effectively reduced. However, due to the asymmetrical shape of the flat extrusion cylinder, it is easy to have stress concentration at the top of the arc inside the inner sleeve, and it has to work under the harsh conditions of ...

Claims

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Application Information

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IPC IPC(8): B21C25/00
CPCB21C25/00
Inventor 成小乐尹君胥光申屈银虎符寒光杨建岳鹏
Owner XI'AN POLYTECHNIC UNIVERSITY
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