Cam mechanism for converting constant velocity rotary motion into a constant velocity reciprocating motion

摘要

A cam mechanism for converting rotary motion into a constant velocity reciprocating motion includes a driven shaft rotatable about an axis of rotation. First and second cam members mounted to the driven shaft for conjoined rotation therewith. A first pair of followers is in contact with the first cam member on opposite sides thereof, and a second pair of followers is in contact with the second cam member on opposite sides thereof. The first pair of followers and the second pair of followers mounted to a follower frame for conjoint motion therewith. The first cam member and the second cam member each have a non-cardioid shape cam profile that results in a constant velocity reciprocation motion of the follower frame upon rotation of the driven shaft about the axis of rotation.

主权项

1. A cam mechanism for converting rotary motion into a constant velocity reciprocating motion, the cam mechanism comprising:
a driven shaft rotatable about an axis of rotation; first and second cam members mounted to said driven shaft for conjoined rotation therewith, each of said first and second cam members having a surface profile; a first pair of followers in contact with said first cam member on the surface profile thereof and on opposite sides thereof; a second pair of followers in contact with said second cam member on the surface profile thereof and on opposite sides thereof; a follower frame, said first pair of followers and said second pair of followers mounted to said follower frame for conjoint motion therewith; and wherein said first cam member and said second cam member each have a non-cardioid shape cam profile that results in a constant velocity linear reciprocation motion of said follower frame upon rotation of said driven shaft about said axis of rotation.