凸轮槽螺旋铣削宏编程及切削参数优化  

Macro Program and Cutting Parameter Optimization for CAM Curve Groove Helical Milling

作　　者：林志伟 LIN Zhi-wei(School of Physics and Electronic Information Engineering,Minnan Normal University,Zhangzhou 363000,China)

机构地区：[1]闽南师范大学物理与信息工程学院,漳州363000

出　　处：《组合机床与自动化加工技术》2022年第8期35-38,43,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：福建省教育厅科技计划项目(JAT190381)。

摘　　要：为了获得平面凸轮曲线槽理论廓线精确的刀位点坐标,且保持加工过程的平顺性,提出一种使用宏程序编程螺旋铣削的方法控制平底立铣刀完成带B样条曲线的凸轮槽加工。首先,分析了曲线槽螺旋铣削的刀具路径和工艺方案,给出B样条曲线和圆弧段刀位点参数表达后编写了宏程序,经VERICUT仿真验证了刀路的准确性;其次,在切削力仿真基础上,针对粗加工和精加工的优化目标,在刀具几何、机床进给、机床功率以及刀具耐用度约束条件下,通过切削试验优化切削参数。使用宏程序编程并优化切削参数之后的螺旋铣削,可显著提高粗加过程的加工效率并延长刀具寿命,精加工后零件的尺寸公差与粗糙度满足使用要求。In order to obtain the precise coordinates of the cutter points of the theoretical profile of the plane CAM curve groove and keep the smoothness of the machining process,a method of using macro program to program helical milling to control the flat end mills to finish the machining of the CAM groove with B-spline curve was proposed.Firstly,the machining path and the scheme of helical milling for CAM curve groove were analyzed.After the parameter expressions of cutter point coordinates of B-spline curve and arc segment were given,a macro program was written.And the accuracy of tool path was verified in VERICUT simulation.Secondly,o n the basis of cutting force simulation,aiming at the optimization objectives of rough and finish machining,the cutting parameters were optimized by cutting test under the constraints of tool geometry,machine feed,machine power and tool durability.The helical milling process with macro programming and optimization of cutting parameters can significantly improve the machining efficiency and prolong the tool life.The dimensional tolerance and roughness of the finished part meets the requirements.The process provides a reference example for complex curve groove machining by general machine.

关 键 词：宏程序编程 螺旋铣削 切削试验 优化切削参数 

分 类 号：TH162[机械工程—机械制造及自动化] TG54[金属学及工艺—金属切削加工及机床]