摘要
对铣削过程中机床主轴电机功率的变化特征进行研究，提出一种实时检测铣刀破损的方法。该方法利用同频采样对功率信号进行采样，采样值进行齿周期平均预处理，然后进行一次差分和二次差分以及归一化处理。其中，一、二次差分运算用于识别刀具的破损，解决目前刀具监控中的实时性问题；归一化处理使报警门限设定不受切削条件变化的影响。
The characteristics of the variation of machine spindle motor power in milling process are studied.A method of real-time monitoring milling cutter failure has been presented.The method samples the signal of power using synchronized sampling technique.The values of sampled singnal are averaged per tooth as the preprocessing,then the first differential and second differential of the average values are calculated,and normalized processing is performed.The first and second differential are used to recognize the breakage of milling cutter and can solve the real-time problems in cutter monitoring.The normalized processing makes the setting of the threshold for alarm independent from variation of cutting conditions.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1994年第2期40-45,共6页
Journal of Tsinghua University(Science and Technology)
关键词
切削刀具
破损
监控
铣刀
cutting tool
breakage
monitor
on-line
