工具機剛性攻牙切削扭矩之估測

Estimation of Cutting Torque for Rigid Tapping Processes Using CNC Machine Tools

黃彥彰(Yan-Zhang Huang)

指導教授 ： 葉賜旭

國立臺北科技大學/機電學院/機電整合研究所/碩士(2013年)

https://doi.org/10.6841/NTUT.2013.00238

摘要

在CNC工具機的加工過程中，切削力與切削扭矩皆是重要的因素，因為它們與CNC工具機的切削狀態有密切的關係。因此，本研究旨在開發一個能改善CNC工具機在剛性攻牙過程中切削扭矩的估算方法。此種方法可以精確地估算出從主軸馬達訊號得到的切削扭矩。不僅如此，此研究所開發的主軸模型同時考慮位置相依摩擦與速度相依摩擦，藉此來改善切削扭矩的估算結果。此研究更進一步的設計了低通濾波器，該濾波器考慮了位置相依摩擦的影響，使切削扭矩能在剛性攻牙的過程中被準確的估算出來。

關鍵字

切削扭矩 ； 扭矩估測 ； 剛性攻牙 ； 電腦數值控制工具機

並列摘要

During the machining processes using CNC machine tools, both the cutting force and the cutting torque are important because they are closely related to the cutting and CNC machine status. Therefore, this study aims to develop an improved estimation method for cutting torque for rigid tapping processes using CNC machine tools.The developed estimation method can accurately estimate the cutting torque by using signals obtained from the applied spindle motor. Moreover, a spindle model is developed for improving the cutting torque estimation results, in which both position-dependent friction and velocity-dependent friction of the applied spindle system are taken into account. A low-pass filter design that considers the effects of position-dependent friction is further developed in this study to accurately estimate the cutting torque generated by the taps during rigid tapping processes.

並列關鍵字

Cutting torque ； Torque estimation ； Rigid tapping ； CNC machine tools

參考文獻

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