摘 要
本文介紹擠壓技術的特點、展望、以及受力計算和工藝特點。以立桿的正擠壓成形為例,分析了立桿正擠時金屬流動的特點和影響其流動的主要因數,以及擠壓件可能出現的缺陷。應用工程法對立桿壓制后應力與應變的分析以及壓制力計算。根據立桿的產品尺寸與形狀及相關的數據文件,論述該零件冷擠壓毛坯的制備、表面處理及冷擠壓工藝流程,確定擠壓件圖,并構思出冷擠壓模具簡圖及其特點。
關鍵詞:擠壓工藝 擠壓技術 分析 計算
Abstract
The graduation thesis mainly introduces characteristic, development potential, strength calculation, technologic analysis of Extrusion Technology.It takes direction extrusion forming of upright for an example.Firstly, it analyzes characteristic of metal fluidity in direction extrusion process of upright , its impact factor and normal defects.And then it analyzes the stress and strain of metalan and process of Strength calculation by Engineering approach. According to the size and shape of production and the relevant database files, the preparation and superficial treatment of the blank and process flows are introduced and the extrusion part is formulated.At the end, mould nephogram is carried out and introduced.