The dimensions of the links comply with the condition: 2r=R, where r and R are the pitch radii of planet gear 5 and internal gear 6. When gear 1 rotates about fixed axis A, rotation is transmitted through bevel gear 2 to bevel gear 3 which rotates about fixed axis B and carries stud 4 about which gear 5 rotates. Gear 5 meshes with fixed internal gear 6. Connected by a turning pair to gear 5 is link 7 which is connected to the press bed (not shown) and reciprocates in fixed guide b. Point a, the pivot of link 7, is located on the pitch circle of gear 5.
$2973$CxG,FD$