Rotary type shaper motion drive

Details Rotary type shaper motion drive Rotary type shaper motion drive

1974-08-12

1976-11-23

Scott, Samuel

Machine element or mechanism

Mechanical movements

Rotary to rotary

74600, F16H 2114

Patent

active

039929574

ABSTRACT:
The rotary drive unit for forming or punch presses and the like has an interposed relation between the drive shaft of the press and the face plate to which the reciprocating rack is pivotally secured. One end of a link member is pivotally connected to an eccentric crank pin carried by a drive ring fixed to the drive shaft and rotated thereby, and the other end of the link member is pivotally connected to a second eccentric crank pin carried by a circular disc member mounted for rotation in a housing provided by the press, the disc member having a center of rotation spaced a distance from the axis of rotation of the drive shaft. With the drive shaft rotating at uniform speed, the disc member functions as a driven member and rotates at a speed which is non-uniform. More specifically the face plate will rotate to impart a complete feeding stroke of 180.degree. to the rack for a minor portion of each revolution of the press drive shaft followed by a complete return stroke of the rack of 180.degree. for the remaining major portion of each revolution of the drive shaft.

REFERENCES:
patent: 2893251 (1959-07-01), McWethy
patent: 3161067 (1964-12-01), Moller
patent: 3216277 (1965-11-01), Groll
patent: 3557639 (1971-01-01), Homstead

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