Design & Manufacturing

  • 제17권1호
  • /
  • Pages.33-39
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  • 2023
  • /
  • 2800-0323(pISSN)
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  • 2733-452X(eISSN)
한국금형공학회 (Korean Society of Die & Mold Engineering)
권호 표지

볼 엔드밀의 헬릭스 각도에 따른 STD 11 소재의 표면 거칠기에 관한 연구

A study on the surface roughness of STD 11 material according to the helix angle of ball endmill

  • 김종수 (한국생산기술연구원 뿌리기술연구소)
  • Jong-Su Kim (Korea Institute of Industrial Technology, Research Institute of Advanced manufacturing & materials Technology)
  • 투고 : 2023.03.15
  • 심사 : 2023.03.31
  • 발행 : 2023.03.31
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초록

The ball end mill is a type of cutting tool that is widely used to process complex mold shapes including aspheric surfaces. Unlike the flat end mill in which the cutting edge is formed on the cylindrical handle, the cutting edge is formed from the cylindrical handle to the hemispherical shape, which is advantageous for processing curved shapes. However, since the cutting speed continuously changes during machining due to the helix angle of the cutting edge or the machining inclination angle, it is difficult to obtain a precise machined surface. Therefore, in this paper, machining was performed while changing the helix angle of the ball end mill and the angle of the machining slope under the same cutting conditions for STD 11 material, which is widely used as a mold material. Through this, the effect of the two variables on the roughness of the machined surface was analyzed. As a result, if the helix angle was 0 degrees, it showed the best surface roughness of Ra. 0.16 ㎛. When the helix angle was 20 degrees, the best surface roughness of Ra. 0.18 ㎛ was occurred.

키워드

과제정보

본 연구는 산업통상자원부의 글로벌주력산업품질대응 뿌리기술개발사업의 일환인 '차세대 자동차용 R100㎛, Ra20nm급 디지털 라이트닝 초미세 Light Guide 모듈 금형성형기술 개발' 과제 (20019131)의 지원을 받아 수행되었습니다.

참고문헌

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