Self-Sensing of Cutting Forces in Diamond Cutting by Utilizing a Voice Coil Motor-driven Fast Tool Servo
Self-Sensing of Cutting Forces in Diamond Cutting by Utilizing a Voice Coil Motor-driven Fast Tool Servo
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DOI：
10.1016/j.precisioneng.2021.03.009
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发表时间：
2021-03
影响因子：
3.6
通讯作者：
Yuan-Liu Chen;T. Ye;Hu-Hong Peng;Lei Wu;Bingfeng Ju
中科院分区：
文献类型：
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作者：
Yuan-Liu Chen;T. Ye;Hu-Hong Peng;Lei Wu;Bingfeng Ju
切削力测量是金刚石切削过程监控的重要手段。提出了一种新的基于音圈电机驱动的快速刀具伺服系统的切削力测量方法。代替将额外的力传感器集成到FTS，这将影响FTS的动态特性，所提出的系统中的力测量与过程中监测VCM的驱动电流的变化和预处理确定系统参数相关联地实现。这样，通过减去与系统以及切割过程相关联的驱动力、弹簧力、阻尼力和惯性力的影响，精确地获得切割力。基于所提出的方法，使用所开发的VCM-FTS加工微结构阵列和加工过程中的切削力的真实的实时监测。实测力信号与加工结果吻合较好。通过测量切削力信号的变化，可以清楚地区分加工微结构的表面轮廓误差。这为基于FTS的金刚石切削力在线测量提供了一种新的方法。
Cutting force measurement is important for monitoring the diamond cutting process. In this paper, a new measurement method of thrust cutting force associated with a voice coil motor (VCM) driven fast tool servo (FTS) system has been developed. Instead of integrating additional force sensors to the FTS which would influence the dynamics of the FTS, the force measurement in the proposed system is achieved associated with in-process monitoring the variation of the driving current of the VCM and pre-process determining the system parameters. In this way, the cutting forces are accurately obtained by subtracting the influences of the driving force, the spring force, the damping force and the inertial force associated with the system as well as the cutting process. Based on the proposed method, a microstructure array was machined using the developed VCM-FTS and the cutting force during the machining process was monitored in real time. The measured force signal was in good agreement with the machining result. The surface profile error of the fabricated microstructure could be clearly distinguished by the variation of the measured cutting force signal. This provides a new approach for in-process cutting force measurement associated with FTS based diamond cutting process.