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공구 연삭기용 빌트인 스핀들의 열변위 분석에 관한 연구
표정대 경상국립대학교 융합과학기술대학원 2022 국내석사
A Study on Thermal Deformation Analysis to Built-in Spindle of Tool Grinding Machine. Recently, the production and manufacturing field require a high level of precision. Accordingly, there is an increasing demand for improvement of processing precision in the production of parts. Grinding machines are essential and essential equipment in the field of production and manufacturing. For the development of a high-precision tool grinder, it is necessary to secure a systematic grinding machine design technology that satisfies thermal-structural stability. In this study, for the development of a tool grinder for building a high-precision tool grinding system, the thermal stability of the spindle of the grinder was confirmed by analyzing the thermal displacement of the spindle, which greatly affects the precision of the grinding machine. The heat source of the grinding machine spindle was largely divided into bearings and built-in motors, and the amount of heat generated according to the operating conditions was calculated through a formula and analysis was performed. The thermal displacement of the grinding machine spindle was analyzed through thermal-structural ductility analysis, and the analysis value was verified through actual measurement.
문홍만 경상대학교 융합과학기술대학원 2014 국내석사
본 연구에서는 기존 벨트 구동형 선반 스핀들(BE model)을 조사한 결과 벨트의 장력이 스핀들 런-아웃에 영향을 주어 열변형이 증대되는 현상을 분석하였다. 이를 개선하기 위하여 빌트인 모터 구동형 선반 스핀들(BI model)을 제작하여 열변형에 관한 연구를 실시하였다. 또한 스핀들을 구동하기 위한 실험장치를 구성하였다. 실험항목은 최적화 실험과 최악 조건의 실험, BE 모델을 열변형 실험을 실시하였다. BE 모델 대비, BI 모델의 열변형 실험 결과는 다음과 같다. 리어 플랜지부의 발열 온도 차이는 8.1 ℃로 45.5 %가 감소되었다. 축 방향 열변위는 7.3 ㎛으로 50.7 %가 감소되었다. 축 직각 방향의 변위 차이가 7.7 ㎛로 40.8 %가 축소됨을 실험적으로 확인하였다. In this study, the existing belt driven lathe spindle(BE model) examined the results of the belt tension spindle run-out will have an effect on the thermal deformation analysis of the phenomenon that is increasing. In order to improve the built-in motor driven lathe spindle(BI model) made a study on the thermal deformation. Built-in motor driven lathe spindle design and fabrication. Optimization experiment conducted experiments with the worst conditions. And conducted experiments to thermal deformation of BE model. BE model contrast, BI model heat deflection experiment results are as follows. Difference between exothermic temperature of the rear flange 8.1 ℃, 45.5 % have been reduced. Axial direction heat displacement is 7.3 ㎛, 50.7 % have been reduced. Shaft radial direction heat displacement is 7.7 ㎛, 40.8 % have been reduced.