• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 1997.10a
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• pp.243-247
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• 1997

기존의 복합 Turning Center 보다 비구심상태에서의 가공, 3축밀링가공 및 3축/4축 동시 Milling가공 등의 특징을 갖고 복잡한 형상과 기능을 갖도 있는 부품 생산용 각형 FMS/C의 기본기계가 될 다기능 복합가공기[최대가공경 310mm *최대가공길이600mm, 6축제어(4축동시가공), ATC Magazine 20개, 주축18.5KW, 제2주축 15KW 회전수36-1,600RPM의 강력, 고속, 정밀 다기능 복합가공기]를 제2차 선도기술개발사업을 통해 개발을 추진하고 있다.

• Proceedings of the KSME Conference
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• 2007.05a
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• pp.1590-1594
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• 2007

This paper describes a case study on dynamic characteristics analysis of a 5-axis multi-tasking machine tool of ram-head typed. Natural frequency and corresponding vibration modes of the machine tool structure were obtained by using both FEM modal analysis and an experimental modal test(impulse hammer test). Both the theoretical and experiment analysis results showed good agreement with each other. Finally, some discussion and review, from the view point of resonance vibration and/or mode coupled chatter, were made based on the analysis results.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.18 no.2
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• pp.162-169
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• 2009

This paper describes a study on dynamic characteristics analysis and dynamic compliance evaluation of a 5-axis multi-tasking machine tool of ram-head type. Structural dynamics analysis and evaluation are necessary to machine tool design and development to secure good machine tool performance against tough and harsh machining conditions. In this study, natural frequencies and corresponding vibration modes of the machine tool structure were analyzed by using both F.E.M. modal analysis and impulse hammer test. Furthermore, dynamic compliance of the machine tool was analyzed by using F.E.M. and also measured by using a hydraulic exciter test. Both the theoretical analysis and experimental test results showed good agreement with each other.