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2006年 第1卷 第4期

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《机械工程前沿（英文）》 >> 2006年 第1卷 第4期 doi: 10.1007/s11465-006-0063-6

Principle and curve of planetary indexing cam mechanisms

School of Mechanical Engineering, Tianjin University, Tianjin 300072, China;

发布日期： 2006-12-05
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A new type of planetary indexing cam mechanism called type !c is presented. The transmission principle of type !c is discussed. Based on the principle of formation of conjugate tooth contour, the equations of the cam s pitch curve are derived. The continuity and symmetry of the cam s pitch curve are also analyzed. It can be concluded that: 1) This type has no output institution so the output precision can be improved; 2) The asymmetrical two-ring structure is used to overcome dead point and its phase angle is equal to (π - 2π/n); 3) The continuous condition of the cam s pitch curve is that the average transmission ratio is -n in an intermittent motion period.

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