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논문 기본 정보

자료유형
학술저널
저자정보
김종도 (중원대학교) 김광희 (부경대학교) 윤문철 (부경대학교)
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한국기계가공학회 한국기계가공학회지 한국기계가공학회지 제23권 제5호
발행연도
2024.5
수록면
1 - 10 (10page)

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초록· 키워드

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Vibration during end-milling is a forced vibration that occurs when the end mill blade impacts the workpiece and is processed. In other words, it can be viewed as a model of forced vibration caused by an external excitation force with an impact frequency according to the number of end mill blades, a vibration characteristic that changes depending on the amplitude and frequency of the cutting force, which varies depending on the cutting force conditions during end milling. Therefore, the end milling model should be defined as a second-order system to obtain the displacement, speed, and acceleration. Additionally, by expressing this vibration model as a differential equation and performing a numerical analysis, the time and frequency responses can be analyzed. In particular, the FRF(frequency response function) was analyzed to reveal the natural frequency of the system and the characteristics of the impact frequency applied to the workpiece by the end mill. Considering the impact force caused by the four-tooth cutter as an excitation force, the natural frequency, surrounding modes, power spectrum, real and imaginary parts of the FRF and the characteristics of each mode were analyzed in detail. After numerical analysis of the different mass, damping, and rigidity of the end milling, it can distinguish several modes that occur depending on the amplitude and frequency of the end milling force. Also, the response can be determined according to the dynamic force conditions during machining and the forced-vibration response characteristics was analyzed systematically.

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ABSTRACT
1. 서론
2. 엔드밀 가공의 진동 모델
3. 엔드밀 가공의 응답 특성 분석
4. 결론
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