FEM해석과 통계적 방법을 이용한 프린터 Gear-Drive ASF Boss의 피로수명 예측

The Prediction Of the Life To Failure Of the Printer Gear-Drive ASF Boss Using the FEM Analysis And the Statistical Method

The ASF(Automatic Sheets Feeders) part of the printer has many bosses supporting gear-trains. Steel-pin bosses are substituted for plastic mold bosses because of advantages such as cost reduction, convenience of manufacturing and accuracy in dimension, but they have a weak point such as fatigue fracture due to low material strength, which causes a serious problem in the reliability of product. To prevent the fatigue fracture of bosses, we should exactly estimate the life to failure of the various shapes of bosses. We take the linear FEM analysis and the statistical method in this paper to figure out the life to failure of bosses. The maximum stress and life to failure of bosses can be easily estimated by this method. This paper specifies how to figure out the life to failure of bosses.