螺旋锥齿轮数控加工中刀盘误差的补偿

在进行螺旋锥齿轮数控加工过程中，用直廓截形代替盘状铣刀刀刃理论截形所产生的偏差会影响螺旋锥齿轮齿面加工精度。针对该问题，分析了螺旋锥齿轮数控加工原理，并在此基础上建立了从刀刃到形成齿面的数学模型；依据空间啮合理论计算盘状铣刀刀刃实际截形，分析并建立了盘状铣刀刀盘半径偏差与齿面误差的关系；进一步推导出刀具实际截形误差的计算过程；最后根据螺旋锥齿轮的加工原理对刀具的误差进行了补偿计算，并对补偿结果进行了仿真实验验证，证明了该算法的可靠性。

Compensation for Cutter Errors of Spiral Bevel Gear CNC Machining

The deviation of the profile that cutter blade used a straight profile to instead the truly, that would impact the machining accuracy of spiral bevel gear tooth surface, during CNC machining process. This paper analyzed the principles of CNC machining spiral bevel gear first, and then a mathematical model of the blade to the tooth surface was built; after that based on the space meshing theory the actual cutter blades were calculated; the relationship among cutter radius and tooth flank errors was establised; the actual tool truncate errors were deduced. Finally, according to the spiral bevel gear machining principles the tool errors were compensated. The compensation results was verified based on simulation and prove the algonithm is reliable.