Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1982-10-19
1986-07-15
Bonck, Rodney H.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
74 53, 74567, 901 16, F16H 2508
Patent
active
045999090
ABSTRACT:
A compact intermittent, linear motion transfer drive mechanism for a pick and place material handling apparatus incorporating a pair of oscillating crank arms for imparting motion along mutually perpendicular axes to linearly movable shaft members capable of imparting a desired motion sequence and positioning to work pieces coupled thereto in response to rotational movements of plate cam members mounted for rotation about a common, fixed-axis input shaft and wherein the cam members are arranged in parallel cooperating pairs, each cam being engaged by an associated follower roller rotatably carried on a follower crank shaft supported on an eccentrically adjustable axis to regulate follower-to-cam engagement. With this arrangement, the peripheral path of each plate cam intersects the rotational axis of its associated follower supporting crank shaft. One pair of cams serves to impart arcuate oscillation to a lift lever associated with a carriage operable along a first linear axis and the other pair of cam members imparts arcuate oscillation to a translator lever pivotally and slidably coupled to the linearly movable shaft members for imparting linear motion to the latter along a second axis perpendicular to the first axis; such shaft members being supported by the carriage for both movement therewith and sliding movement therewithin.
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Bonck Rodney H.
Emerson Electric Co.
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