Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Comparative Analysis of Mechanical Vibrations of an Air-Drop Hammer and a Counterblow Hammer in Forging Process

에어-드롭 해머와 카운터블로 해머 프레스 단조공정의 기계진동 비교해석

  • Kim, S.T. (Department of Mechanical Engineering, Changwon National University) ;
  • Choi, Y.H. (Department of Mechanical Engineering, Changwon National University) ;
  • Ju, G.J. (Mechanical Engineering Research Center, Changwon National University)
  • 김수태 ;
  • 최영휴 ;
  • 주경진
  • Received : 2022.07.28
  • Accepted : 2022.10.12
  • Published : 2022.12.01
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Abstract

Air-drop hammer press and counterblow hammer press are widely used power-drop forging hammersemploying different forging blow mechanisms. It is important and necessary to analyze mechanical vibrations of these two different hammers in their forging processes in order to develop high performance forging hammers. In this study, these two forging hammers were mathematically modelled as mass-spring-damper systems. For these two different types of forging hammers, the forging efficiency and mechanical vibrations due to hammer forging blow were theoretically analyzed and compared. The force transmitted to the ground was also determined and compared. Especially, effects of mass ratio and restitution coefficient on forging efficiency were investigated.

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Acknowledgement

이 논문은 2021~2022년도 창원대학교 자율연구과제 연구비 지원으로 수행된 연구결과임

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