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问42:难切削加工中,不锈钢缸体深孔镗削是其中之一,请按下列要求试述该加工工艺。 已知材质为2Cr13不锈钢,缸体孔径为φ100_0~(+0.08)mm,表面粗糙度R_a0.8μm,直线度、圆度要求≤0.03mm,外径φ114mm,缸体长度1750mm。 答:在无专用加工设备的情况下,参照零件结构、材质性能、机床结构等因素,可设计专用镗头;镗一挤结合专用浮镗刀,采用TQ2130深孔镗床,加工工艺如下:
Q42: In difficult cutting, the deep hole boring of stainless steel cylinder is one of them. Please try out the processing technology according to the following requirements. Known material 2Cr13 stainless steel, cylinder bore φ100_0 ~ (+0.08) mm, surface roughness R_a0.8μm, straightness, roundness requirements ≤ 0.03mm, outer diameter φ114mm, cylinder length 1750mm. A: In the absence of special processing equipment, with reference to parts structure, material properties, machine structure and other factors, can design a special boring head; Boring a squeeze with a dedicated floating boring knife, using TQ2130 deep-hole boring machine, the processing is as follows: