Machine element or mechanism – Elements – Cams
Patent
1976-07-09
1978-08-29
Scott, Samuel
Machine element or mechanism
Elements
Cams
74 70, 74817, F16H 5306, B23B 2924, B23Q 1700
Patent
active
041095480
ABSTRACT:
A parallel indexing cam structure has a locking cam and a pair of further cams which are rigidly secured to an input shaft at predetermined angular positions relative to each other, and a cam follower device is rigidly secured to an output shaft parallel to the input shaft and has a plurality of spider plates and three sets of cam follower rollers. During the dwell period, the locking cam is contacted by two rollers of one set of the cam follower rollers while the further cams are contacted by only one of the rollers of the respective remaining sets. The locking cam has a larger profile circle at the dwell position during the dwell period than the further cams, thereby blocking the rotation of the output shaft with increased accuracy and stiffness during the dwell period.
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Makino Hiroshi
Shinohara Shigeyuki
Ferrell Don E.
Scott Samuel
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