磨床油压筒零件的孔加工,一般要经过粗镗、精镗、浮动镗和珩磨四道工序才能完成。用这种方法加工一根内孔为75毫米、长度为1172毫米的钢质油压筒需用48小时。采用图示镗一滚组合工具后,可在一次走刀中完成粗镗、精镗、滚压及精滚修光四个工序,单件工时降到2～4小时,加工精度可 Grinder oil pressure cylinder parts of the hole processing, generally go through rough boring, fine boring, floating boring and honing four processes can be completed. It took 48 hours to process a steel hydraulic cylinder with a bore of 75 mm and a length of 1172 mm in this way. Boring and rolling using a combination of tools, can be completed in one pass Rough boring, fine boring, rolling and finishing repair four processes, a single man-hours down to 2 to 4 hours, the processing accuracy can be