铝件镗挤加工的工艺方法由于具有工序少、加工精度和表面光洁度高等优点,近几年来获得较快的发展。但由于铝合金材质粘性较大,因此镗挤加工时,切屑很容易粘在刀刃上,从而影响被加工孔的表面光洁度,使加工精度不稳定。为此在设计镗挤精加工机床(包括刀具)时,必须对有些问题给予充分的注意。本文以加工212 Billet extrusion processing of aluminum parts due to the process with fewer processes, precision and surface finish high, in recent years to obtain faster development. However, due to the larger viscosity of aluminum alloy, so boring squeeze processing, the chip is easy to stick to the blade, thus affecting the surface finish of the hole to be processed, the processing accuracy is not stable. For this reason in the design of boring and squeeze finishing machine (including the tool), we must pay full attention to some problems. This article is processed 212