孔加工在机械制造中占有重要位置。不仅因其加工量所占比重很大,而且加工精度要求越来越高,这里的毛刺问题至关重要。如在热交换器的管板加工,液压、气动原件的阀体加工,轴承保持架加工,以及其它有色金属件加工中,钻孔时产生的大量毛刺,特别是交叉孔中的毛刺是很难清除的,其工 Hole machining occupies an important position in the machinery manufacturing. Not only because of the large proportion of its processing volume, and the processing accuracy requirements are getting higher and higher, the glitch here is crucial. Such as the heat exchanger tubesheet processing, hydraulic, pneumatic original body processing, bearing cage processing, and other non-ferrous metal parts processing, drilling a large number of burr generated, especially in the cross hole burr is very difficult Clear, its work