基于五轴数控磨削整体硬质合金断屑钻头方法研究  

Research on the Method of Grinding Solid Carbide Chip Breaking Bit Based on Five-axis CNC

作　　者：黄鹤鹏 郑君民 姜秋宇 马瑞堂 王遵涵 杜少华 Huang Hepeng;Zheng Junmin;Jiang Qiuyu;Ma Ruitang;Wang Zunhan;Du Shaohua(School of Mechanical Engineering,Dalian Jiaotong University,Dalian,Liaoning 116028,China)

机构地区：[1]大连交通大学机械工程学院,辽宁大连116028

出　　处：《机电工程技术》2024年第11期171-175,共5页Mechanical & Electrical Engineering Technology

摘　　要：为解决整体硬质合金钻头钻削过程中形成长切屑导致断屑困难的问题,提出了一种新型整体硬质合金断屑钻头的五轴数控磨削算法。构建断屑钻头螺旋槽及端面切削刃线的参数化数学模型,并解析砂轮在加工过程中的位姿。通过建立坐标系和定义关键参数,结合磨削工艺的几何约束条件,精确求解了砂轮在棒料坐标系下的位置和方向。采用VERICUT仿真软件进行了加工仿真实验。结果表明,应用新型加工方法的断屑钻头其定心钻尖半角误差可被控制到0.3°,螺旋角等参数同样达到预期的精度要求,从而证实了其实用性和准确性。本方法为断屑钻头的加工提供了理论支持。In order to solve the difficulty of chip breaking caused by long chip forming in the drilling process of solid carbide bit,a new five�axis CNC grinding algorithm for solid carbide chip breaking bit is proposed.The parametric mathematical model of spiral groove and end cutting edge line of chip breaking bit is established,and the pose of grinding wheel during machining are analyzed.By establishing the coordinate system and defining the key parameters,the position and direction of the grinding wheel in the coordinate system of the rod were precisely solved by combining the geometric constraints of the grinding process.VERICUT simulation software is used to carry out machining simulation experiments.The experimental results show that the chip breaking bit with the new machining method can control its half angle error to 0.3°,and the parameters such as spiral Angle also meet the expected accuracy requirements,thus confirming its practicability and accuracy.It provides theoretical support for the machining of chip breaking bits.

关 键 词：断屑钻头 螺旋槽 端面切削刃 砂轮位姿 

分 类 号：TG659[金属学及工艺—金属切削加工及机床] TG580.6TG713.1