基于残留高度设计的模具加工用新型圆角端铣刀  

New Rounded End Mill for Mold Processing Based on Scallop-height

作　　者：刘献礼[1] 姜志鹏[1] 李茂月[1] 丁云鹏[1] 王广越[1] 刘立佳[1] 

机构地区：[1]哈尔滨理工大学机械动力工程学院,哈尔滨150080

出　　处：《机械工程学报》2015年第5期192-204,共13页Journal of Mechanical Engineering

基　　金：国家自然科学基金重点资助项目(51235003)

摘　　要：针对工厂实际加工编程时用常规圆角端铣刀进行大切深加工造成的加工后表面残留高度大且不均,在初次荒加工后需要建立残留模型进行二次荒加工的情况,对常规圆角端铣刀的R角刃形进行优化设计,设计出一种有效降低被加工工件表面残留高度的大切深高效铣削刀具。建立该新型圆角端铣刀以及常规圆角端铣刀的水平切削行距与表面残留高度的数学模型。模型参数分析表明,该新型圆角端铣刀具有良好的切削效果。对新型圆角端铣刀及常规圆角端铣刀的切削仿真表明,前者的加工效率最高可提高2.4倍。对设计的刀具进行磨制,实际加工实验表明,相比于常规圆角端铣刀,应用该新型圆角端铣刀可降低表面残留高度1.96倍。To solve the problem of the plant in the actual NC programming that the residual surface height is too large and uneven when using conventional rounded end mills, and the situation to create a second rough machining after the initial rough machining need for large cut deep processing. An efficient large cut deep milling cutter is designed which can effectively reduce the residual height through optimizing the R angle blade of conventional rounded end mill cutter. The mathematical model on the relationship of level spacing and scallop-height is established for the new rounded and the conventional rounded end mill cutter. The model parameters’ analysis shows that the new rounded end mill cutter has a good cutting effect. The cutting simulation of new and conventional rounded end mill suggests that the former processing efficiency can be improved 2.4 times. The designed tool is grinded. Compared to conventional rounded end mill cutter, the actual processing experiment shows that the surface residual height can be reduced 1.96 times with the new rounded end mill cutter.

关 键 词：模具加工 残留高度 大切深 新型圆角端铣刀 

分 类 号：TG714[金属学及工艺—刀具与模具]