麻花钻螺旋槽数控加工中砂轮位置的自动搜索  

Automatic search for grinding wheel position for twist drill CNC fluting

作　　者：李铸宇[1] 张伟[1] 贺凤宝[1] 胡建忠[1] 

机构地区：[1]大连工业大学机械工程与自动化学院,辽宁大连116034

出　　处：《大连工业大学学报》2014年第4期305-308,共4页Journal of Dalian Polytechnic University

基　　金：国家科技重大专项(2010ZX04012-042)

摘　　要：螺旋槽对麻花钻的切削性能有重要的影响。在已知芯厚和径向前角的条件下,提出一种自动搜索砂轮安装位置、数控加工麻花钻螺旋槽的新方法。首先在等芯厚的条件下,确定砂轮的初始中心距;再用模拟加工运动的直接法计算槽形;在满足径向前角的条件下,用一维搜索确定偏心距。实际加工的螺旋槽横截面数据的测量和计算结果一致,证明方法有效。算法可直接应用于钻头数控开槽机的软件设计。A novel method is presented to setup wheel position in drill CNC fluting to fulfill web thickness and radial rake angle. The web thickness can be achieved by setting a unique initial center distance directly. The profile of flute is determined by direct method of machining movement simulation. The rake angle requirement is fulfilled by one-dimensional search to determine the eccentric distance. Its validity is verified by good agreement between the computed results and samples＇ measurement. This algorithm could implement in a software system for drill flute grinder.

关 键 词：麻花钻 螺旋槽 芯厚 前角 

分 类 号：TG713.1[金属学及工艺—刀具与模具]