MT82变速箱二轴复合孔加工的工艺优化  

Process Optimization of Two Axis Composite Hole Processing of MT82 Gearbox

作　　者：杨红[1] 江叔通[1] 谭明皓[1] 

机构地区：[1]南昌齿轮有限责任公司,江西南昌330044

出　　处：《装备制造技术》2016年第9期120-123,共4页Equipment Manufacturing Technology

摘　　要：由于MT82变速箱二轴复合孔的定位基准长度很短,轴向长度不到1mm,若直接使用该定位基准进行大进给量车削,则会造成该定位基准失效。原工艺方案为在复合孔处先加工出B5工艺中心孔,最后加工复合孔,存在两端孔的同轴度差和复合孔处的基准面椭圆度质量问题。设计一种带辅助定位基准的复合钻,先将复合孔的定位基准和辅助定位基准同步加工出来,使用辅助定位基准完成车削工序之后,再钻孔完成复合孔的加工,此工艺优化方案可保证两端定位基准的同轴度,同时也保证车削加工时外圆跳动。The datum length of the compound hole of the MT82 gearbox output gear shaft is very short,and the axial length is less than 1 mm,so that the datum will invalidate if being used to deep feed turning. B5 center hole is drilled in the composite hole at first by the original process,the composite hole is machined at last,but the quality problems of the poor concentricity of the both ends of the center hole and the elliptical datum of the compound hole. The datum of the composite hole and the auxiliary datum are machined together using the composite drill with auxiliary datum,after using the auxiliary datum to machine the turning process,the process of the output gear shaft is completed after drilling the composite hole,the process scheme can guarantee the concentricity of the datum,but also ensures cylindrical beating during turning processing.

关 键 词：变速箱二轴 复合孔 辅助定位基准 工艺优化 

分 类 号：TG52[金属学及工艺—金属切削加工及机床]