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Method for bending and forming aluminum section side column member of railway vehicle body

A bending forming and rail vehicle technology, which is applied in the field of metal plastic processing, can solve the problems of inaccurate external dimensions and large section distortion, and achieve the effect of no need for adjustment, good section size and good quality

Inactive Publication Date: 2012-01-18
吉林诺亚机电科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention relates to a bending forming method of an aluminum profile side column member of a rail vehicle body, and aims to solve defects such as large section distortion and inaccurate external dimensions of the aluminum profile side column component during the bending forming process

Method used

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  • Method for bending and forming aluminum section side column member of railway vehicle body
  • Method for bending and forming aluminum section side column member of railway vehicle body

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Embodiment Construction

[0019] The specific implementation of the bending forming method for the aluminum profile side column member of the rail vehicle body is further described below in conjunction with the accompanying drawings, and the specific steps are as follows:

[0020] 1) According to the cross-sectional characteristics of the side column members, the closed cavity of the profile (1) is filled with a continuous mandrel (2) connected by many supporting blocks with a set shape, and the semi-closed cavity is filled with Sets the discrete block fill for the geometry (3). The block filler and the mandrel are always leaning against the side walls around the cavity, supporting the side walls, and can bend with the shape during the bending process to prevent them from sinking during the bending process.

[0021] 2) Raise the lower ejector plate (4) of the mold to the specified height, place the filled aluminum profile on the lower ejector plate horizontally, with the socket of the semi-closed cavit...

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Abstract

The invention discloses a method for bending and forming an aluminum section side column member of a railway vehicle body, which belongs to the technical field of metal plastic working. The forming method is mainly characterized in that the aluminum section side column member is bent and formed on a hydraulic press by adopting a bending and forming manner of a die. The method comprises the following steps of: firstly, filling discrete type filler in a semi-closed die cavity of the section and filling a continuous mandrel in the closed die cavity; secondly, horizontally placing the section on a raised lower ejector plate and enabling a spigot of the section to be placed upwards; thirdly, enabling an upper die to downwards move to press the blocky filler; enabling the upper die to lock a straight line segment part of the member together with the lower ejector plate to continuously move downwards and bend the section, completely laminating and finishing bending and forming; and finally, returning the upper die, ejecting the bent section by using the lower ejector plate, taking out the filler and processing geometrical characteristics to obtain a qualified side column member. The quality of products produced by the forming process disclosed by the invention is favorable, thus the rework is avoided; the production efficiency can be multiply improved; and the method can be used for bringing huge economic and social benefits to enterprises.

Description

Technical field: [0001] The invention relates to a bending forming method of an aluminum profile side column member of a rail vehicle body, and belongs to the technical field of metal plastic processing. Background technique: [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry. Due to its high "specific strength" (ratio of strength to specific gravity) and good plasticity, aluminum alloy profile components are used in aviation, aerospace, automobiles, Rail vehicles and other fields have been widely used. [0003] Among the aluminum alloy car body frame members of rail vehicles, there is a side column member with complex cross-section, which is bent from a straight profile and is a key load-bearing member of the car body and an important assembly positioning reference part. Large, high precision requirements. However, due to the complex profile shape (composed of multiple arcs and straight lines) and cross-sectional shape (c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D7/00
Inventor 谷诤巍
Owner 吉林诺亚机电科技有限公司
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