고속 엔드밀 가공시 동적 모델에 의한 표면형상 예측

DOI QR코드

DOI QR Code

이기용;하건호;강명창;이득우;김정석
Lee, Gi-Yong;Ha, Geon-Ho;Gang, Myeong-Chang;Lee, Deuk-U;Kim, Jeong-Seok

  • 발행 : 2000.07.01

초록

A dynamic model for the prediction of surface topography in high speed end milling process is developed. In this model the effect of tool runout, tool deflection and spindle vibration were taken in to account. An equivalent diameter of end mill is obtained by finite element method and tool deflection experiment. A modal parameter of machine tool is extracted by using frequency response function. The tool deflection, spindle vibration chip thickness and cutting force were calculated in dynamic cutting condition. The tooth pass is calculated at the current angular position for each point of contact between the tool and the workpiece. The new dynamic model for surface predition are compared with several investigated model. It is shown that new dynamic model is more effective to predict surface topography than other suggested models. In high speed end milling, the tool vibration has more effect on surface topography than the tool deflection.

키워드

고속 엔드밀 가공;표면형상;동적모델;공구 처짐;주축진동;칩두께;절삭력

참고문헌

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