缸盖内孔扩孔锪钻改进  

Drilling Reamer Modification for Reducing Defects of Flange's Inner Hole

作　　者：汤坤 侯克忠 徐春阳 

机构地区：[1]上海海立铸造有限公司,上海市201500

出　　处：《工具技术》2011年第12期52-54,共3页Tool Engineering

摘　　要：在现有生产线的条件下,4刃焊接硬质合金锪钻内孔扩孔加工时易"摆动"是造成H型上缸盖内孔研磨不良的主要原因,影响了主机厂压缩机装配质量。改进设计了阶梯式复合锪钻,两节8刃切削方式改善了单边切削状况、提高了切削稳定性,H型上缸盖内孔研磨不出的不良率由0.8%以上下降到0.2%。In the condition of existing product line,the main reason of the grinding defects of the H-type flang＇ s inner hole is the swing caused by enlarging inner holes with four-blade welding carbide reamer. That affects the quality of the compressor assembly. The design of the staged compound drilling reamer has been improved. The way of two-step eight-blade drillingimproved the situation and stability of single-edged cutting,the defective rate of grinding H-type flange inner hole decreases from above 0.8% to 0.2%.

关 键 词：阶梯式复合锪钻 扩孔加工 内孔研磨 压缩机缸盖 

分 类 号：TG713.2[金属学及工艺—刀具与模具]