Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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A study on the vibration cutting of high-hardness mold steel

고경도 금형강의 진동 가공에 대한 연구

  • Kim, Jong-Su (Korea Institute of Industrial Technology, Molding & Metal Forming R&D Department)
  • 김종수 (한국생산기술연구원 뿌리기술연구소)
  • Published : 2022.09.30
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Abstract

In this study, we designed an vibration cutting tool that can achieve improvements such as low cutting force, interrupted chip evacuation and better surface quality of cutting performance to obtain high-quality surface roughness and improvement of tool wear, which is an issue in the machining of high-hardness mold steel. Among the resonance frequency modes of the vibration cutting tool, the bending mode was used to maximize the driving amplitude of the vibration tool tip, and the resonance frequency was confirmed through the finite element method. After measuring the actual resonant frequency of the designed tool using an optical fiber sensor, the cutting force and machining surface of vibration cutting and conventional cutting were compared and analyzed in the turning process of high hardness mold steel (STAVAX). As a result of the experiment, the cutting force was reduced by about 20 % compared to the conventional cutting process, and the surface roughness was also improved by about 60 %. This study suggested that the tool wear and surface quality of high-hardness steel can be improved through the vibration cutting method in the machining of high hardness mold steel.

Keywords

Acknowledgement

본 연구는 산업통산자원부 지원 글로벌주력산업 품질대응 뿌리기술개발사업 (20019131)으로 지원한 것이다.

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