한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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오스템퍼링 구상흑연주철 평기어의 굽힘피로시험평가에 관한 연구

Evaluation of Bending Fatigue Testing of Austempered Ductile Iron Spur Gears

  • 려건화 (절강쌍환전동유한회사) ;
  • 주서 (절강쌍환전동유한회사) ;
  • 허양 (서안이공대학 재료공학부) ;
  • 진진 (경상대학교 대학원 기계항공공학부) ;
  • 장기 (절강쌍환전동유한회사) ;
  • 류성기 (경상대학교 대학원 기계항공공학부)
  • Lv, Jian Hua (R&D Department, Zhejiang Shuanghuan Driveline Co., LTD.) ;
  • Zhou, Rui (R&D Department, Zhejiang Shuanghuan Driveline Co., LTD.) ;
  • Xu, Yang (School of Material Science and Engineering, Xi'an University of Technology,) ;
  • Qin, Zhen (School of Mechanical & Aerospace Engineering, Gyeongsang National University) ;
  • Zhang, Qi (R&D Department, Zhejiang Shuanghuan Driveline Co., LTD.) ;
  • Lyu, Sungki (School of Mechanical & Aerospace Engineering, Gyeongsang National University)
  • 투고 : 2020.08.11
  • 심사 : 2020.10.03
  • 발행 : 2020.12.31
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초록

An experimental evaluation of bending fatigue strength for austempered ductile iron (ADI) spur gears was performed using a Zwick fatigue tester. The gear material was manufactured using vertical continuous casting, resulting in the radius of the graphite grains being smaller. The stress-number of cycles curve (S-N curve) for the bending fatigue strength of the ADI spur gears thus manufactured, without any specific surface treatments, was obtained using post-processing software. It was observed that when the reliability was 50%, the allowable root stress was 610 MPa. was calculated using an analytical method as well as the finite element method, and the difference between the values calculated using the two methods is only 7%. This study provides a reliable basis to rate the reliability design of small gearboxes in automation in the future.

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참고문헌

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