Cam apparatus and pick and place apparatus utilizing the same

A cam apparatus comprising:

• an input shaft rotatably supported on a housing to be rotated continuously at a constant speed;
• a first output shaft rotatably supported on said housing and to which rotational motion at an inconstant speed of a specific pattern resulting from the conversion of the continuous rotational motion at a constant speed of said input shaft is transmitted through a rotational motion converting cam mechanism;
• a slider member provided coaxially to said first output shaft and capable of relative displacement along the axial direction through a relative rotation regulating cam mechanism while its relative rotation with said first output shaft is regulated, and to which a reciprocal rectilinear motion in the axial direction of the first output shaft resulting from the conversion of the continuous rotational motion at a constant speed of said input shaft is transmitted through a cam link mechanism;
• a second output shaft provided coaxially to said first output shaft and rotatably while its movement in said axial direction is regulated;
• and
• a motion converting cam mechanism interposed between said second output shaft and said slider member, which converts the reciprocal rectilinear motion displacement of said slider member into the oscillating rotational motion displacement of said second output shaft to transmit the same thereto, and transmits the rotational motion at an inconstant speed of said slider member to said second output shaft,
• wherein the oscillating rotational motion of said slider member and the rotational motion at an inconstant speed of a specific pattern of said first output shaft are compounded and are transmitted to said second output shaft.