面齿轮高速铣削数控加工方法研究

Research on NC Machining Method of Face Gear in High Speed Milling

以数控铣床高速铣削面齿轮为研究对象,根据微分几何原理和齿轮啮合原理,建立了直齿面齿轮的数学模型。基于插铣刀对虚拟仿形概念的面齿轮加工方法,进行了高速铣削加工过程中啮合点刀位的计算;通过刀具主轴进给范围和摆角范围的计算,使用UG后置处理得到刀具轨迹和程序;借助VERICUT软件进行面齿轮高速铣削加工仿真,并进行面齿轮高速铣削试验与检测,得到理想齿面与实测齿面的最大误差为0. 712μm,表明提出的面齿轮高速铣削加工方法的可行性。

According to the principle of differential geometry and the theory of gear meshing,and with CNC milling machine high speed milling machined face gear as the research object,the mathematical model of straight tooth face gear is established. Based on the concept of virtual copying of plunge milling cutter to the gear shaper tool,the cutter position calculation of meshing point in high-speed milling process is carried out. Then through the calculation of straight tooth cylindrical gear milling cutter angle range and spindle feed range,by using the UG post processing,the tool path generation and program is got. With the help of VERICUT software,the high speed milling simulation of face gear is carried out. High speed milling test of face gear and detection of face gear is carried out. And by comparing the experimental results and theoretical tooth surface,it is shown that the maximum error is 0.712 μm. The result indicates that the processing way of high speed milling surface gear is feasible.