为某种设备配制的长气缸,材料为无缝钢管,内孔要求光洁度8～9,精确度0.05～0.08,椭圆度0.06～0.08。工件长700～1500公厘,直径φ50～100。加工余量4～5公厘,分次切削。 曾经用过许多种方法加工,如单刀头镗杆, 浮动刀片镗杆,以及三个刀头的镗杆镗削,再用砂布打光。用上述方法加 The long cylinder formulated for a certain kind of equipment is made of seamless steel tube. The inner hole requires smoothness of 8 to 9, accuracy of 0.05 to 0.08, and ovality of 0.06 to 0.08. Workpiece length 700 ~ 1500 mm, diameter φ50 ~ 100. Processing margin of 4 to 5 mm, graded cutting. There have been many methods of machining such as single-head boring bars, floating-blade boring bars, and boring bar boring of three heads, followed by polishing with emery cloth. Add with the above method