PCD刀具孔加工过程中的切屑控制方法  

Chip control method when machining holes with PCD tools

作　　者：黄震 党战国 赵振国 HUANG Zhen;DANG Zhanguo;ZHAO Zhenguo(Shanghai General Motors Dongyue Powertrain Co.,Ltd., Yantai 264000, Shandong, China)

机构地区：[1]上汽通用东岳动力总成有限公司,山东烟台264000

出　　处：《金刚石与磨料磨具工程》2020年第6期102-104,共3页Diamond & Abrasives Engineering

摘　　要：为消除PCD刀具孔加工过程中出现的划痕,通过分析划痕的类型和出现的原因,设计试验验证优化刀具角度和增加喷淋手段等方式对内孔表面质量的影响。结果显示:入口划痕产生的原因是粗加工刀具产生的铝环切屑残留在工件内,被精加工刀具再次切削时划伤工件内表面。优化喷淋方式对改善入口划痕效果较差;通过调整加工工艺,并优化精加工刀具刃口主偏角(从85°减小到48°),可以减小铝环厚度并遏制铝环的形成。实际生产显示该方法可消除阀体成品中残留铝环的现象,提高内孔表面质量。The types of surface scratches on the inner surface of hole drilled with PCD tools are analyzed,as well as the reasons of their appearance to eliminate them.Experiments are implemented to test the effect of methods such as optimizing the main principal deflection angle and adding spray.Results show that in rough machining,there formed an aluminum ring chip in the hole.Then the ring chip,driven by the fine machining tool,would scratch the hole surface.It is also found that optimizing the main principal deflection angle of the edge of coarse machining tool,thus from 85°to 48°,could reduce the ring thickness and limit its appearance.Actual production proves that this method could eliminate the remaining aluminum ring in finished product and thus improve the surface quality of inner hole.

关 键 词：内孔表面划伤 铝材加工 主偏角 喷淋手段 

分 类 号：TG71[金属学及工艺—刀具与模具] TG58