“BTA”是美国镗削和套料加工协会的简称──编者。深孔加工时,必须将切屑从孔内排出。对L/D(孔深/孔径)超过5的孔来说,只要排屑能力差,无论怎样提高刀具系统的性能(如使用能重切削和大走刀进给的刀具)都是毫无意义的。因此,前人采用了各种排屑法(也称为深孔加工系统),由于加工 “BTA” is short for the American boring and nesting Association - Editor. Deep hole machining, the chip must be discharged from the hole. For holes with an L / D of 5 (hole depth / hole diameter), there is no point in improving tool system performance (such as using tools capable of heavy cutting and large feed) as long as chip evacuation is poor of. Therefore, the predecessors used a variety of chip removal method (also known as deep-hole processing system), due to processing