本文提出一種新型的從動件，也就是在習用的從動件與凸輪之間額外加入一個具參滾子的中間桿件。文中首先針對習用的平移式滾子從動件之凸輪機構進行運動學、靜力學、動力學以及元件強度設計的分析。接著，提出一套解析法來設計額外加入具參滾子中間桿的平移式從動件之盤形凸輪機構以及分析該機構的接觸應力，並將所得到的結果及現象和習用的平移式滾子從動件之凸輪機構的接觸應力相比較。這種具新型從動件的凸輪機構有兩組凸輪輪廓曲線且可隨時與滾子間保持多個接觸點，因此，無需使用回位彈簧即可維持滾子與凸輪間的接觸關係。該凸輪機構之輪廓曲線可以為溝槽式或是凸緣式的設計。相對於習用的平移式滾子從動件之凸輪機構而言，本文所提出的具參滾子中間桿的平移式從動件之盤形凸輪機構若選擇適當的設計參數值，可使得滾子與凸輪間的接觸應力降低約12% ~ 42%。此外，改良式的從動件亦可應用在固定式的凸輪機構。由於固定式凸輪輪廓曲線可根據給定之從動件運動路徑而決定，因此可藉由固定式凸輪輪廓的導引而使得從動件沿著包含直線和曲線所組成的路徑運動，並且使從動件和凸輪之間沒有背隙。

This research proposes a modified arrangement of the common translating follower. That is, an extraneous intermediate link that has three rollers is added between the cam and the common follower. Firstly, the study involving kinematics, statics, dynamics, and machine elements of a cam mechanism with a common translating roller follower is conducted. Next, the research develops an analytical approach for designing disk cam mechanisms with a translating follower having an extraneously added ternary -roller intermediate link, and also presents a contact stress analysis of such a cam mechanism. The results are compared with those of the disk cam mechanisms with a single roller follower. This cam mechanism with such a modified follower has two set of profiles and can realize mutiple contact points between the cam and the follower at any instant. The two set of profiles of such a cam mechanism can serve as either the ribbed type or the grooved type. The contact stress of such a cam mechanism can be reduced by 12% to 42% in comparison with those of cam mechanism with a common translating roller follower. In addition, the modified arrangement of the follower can further be adapted to the stationary cam mechanism. Since the profiles of stationary cam can be correspondingly determined according to desired path of follower, the stationary cam can guide a follower with three rollers to move smoothly and free of backlash along a straight-curved path.

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