大连机床厂研制的我国第一台活塞环精加工自动车床,最近通过了鉴定。该机床的几何精度、加工精度和效率都达到了国际同类产品水平,为我国填补了一项空白。活塞环精加工自动车床采用了特殊的装卡方式,一次可装卡多片工件,工件装卡和加工过程全部实 Dalian Machine Tool Plant developed China’s first piston ring finishing automatic lathe, recently passed the appraisal. The geometric accuracy of the machine tool, machining accuracy and efficiency have reached the international level of similar products for our country to fill a gap. Piston ring finishing automatic lathe using a special card loading method, a card can be loaded more than one piece, the workpiece loading card and the processing of all