【摘要】 鉴于摩擦对微型零件塑性微成形过程的影响随表面积与体积之比增加而显著增大的现象,本文对微型齿轮零件成形设计了浮动式微型模具结构,并进行了等温成形实验研究.结果表明:可浮动凹模将摩擦阻力变为积极摩擦力,提高了坯料向模腔的填充能力,有效降低了成形载荷;对成形件的分析表明,成形件有良好的表面质量和微观组织结构.更多还原

【Abstract】 Because the effect of friction on microforming increased quickly with the increasing of the ratio of surface to volume,in this paper,for the forming of microgear,a floating micro-die was designed,and isothermal forming tests of the microgears were carried out.The results show that the friction can be used to improve the billet to flow into die cavity by the floating micro-die so that the forming load is decreased obviously,and the formed microgears have good surface quality and microstructure.更多还原