超薄壁金属筒的成形加工  

Forming of Ultra-thin Metal Cups

作　　者：孟永钢[1] 田煜[1] 蒋洪军[1] 

机构地区：[1]清华大学,北京市100084

出　　处：《中国机械工程》1999年第5期559-562,共4页China Mechanical Engineering

基　　金：国家自然科学基金!59575050

摘　　要：针对壁厚为0．01mm～0.1mm的超薄壁金属圆筒成形加工的要求，研制了一台有微机控制功能的精密成形试验机，使冲头与凹模在加工过程中的对中精度达到1μm。利用这台试验机，对初始壁厚为0．3mm的黄铜和纯铝筒进行了一系列变薄拉延加工试验，加工出内径为15mm，壁厚为0．015mm～0．08mm，长度为30mm的一系列超薄壁金属圆筒，黄铜筒的壁厚达到0.015mm。初步检测表明，成形后的超薄壁筒壁厚偏差小于2μm，内径尺寸精度与冲头的加工精度相同，表面粗糙度R_a为0．057μm。According to the requirements of forming of ultra-thin metal cups, a precision forming test ma chine has been designed and fabricated, and a scheme for aligning the punch with the die during ironing process has been developed.With the developed test machine, form ing experiments of two non-ferrous materials, brass and aluminum, have been performed. Experiments results have shown that bright brass cups with uniform wall as thin as 15μm can be formed successfully by this way.

关 键 词：超薄壁筒 精密成形 变薄拉延 黄铜 纯铝 

分 类 号：TG386.32[金属学及工艺—金属压力加工]