Abstract
本文根據陳與葉(1990)之三維有限單元接觸分析模型，分析三種凸輪系統----擺盪式滾子從動件共軛凸輪系統，平行分度凸輪系統及往復式平面從動件凸輪系統----之接觸應力。系統之慣性效應來自做加速度運動之從動件。該慣性效應以準靜態分析方式納入考慮，以等效力模擬之，再分配至相關節點。擺盪式滾子從動件共軛凸輪系統與平行分度凸輪系統方面，探討其正向接觸應力；往復式平面從動件凸輪系統方面，探討其最大剪應力。計算結果與相關實驗數據或赫茲應力相比較。最後對往復式平面從動件凸輪系統之彈性誤差予以評估。Based on the finite element model developed by Chen andYeh(1990) for three-dimensional contact mechanics analysis, thecontact stress analysis for three kinds of cam systems---conjugate cams with oscillating roller follower, parallelindexing cam and disk cam with translating flat-facedfollower---is performed. The effect of inertia resulting fromaccelerating follower is simulated by equivalents divided intoconsistent nodal loads that are exerted on the follower. Thecontact stresses for the conjugate cam and parallel indexingcam systems are discussed and the maximum shear stresses forthe cam with flat-faced follower in different rotating speedsare investigated. The calculated stresses obtained from theanalysis are compared with available experimental data or Hertzcontact solution. Then the flexibility errors for the cam withflat-faced follower are evaluated.