Shaft 17 is rotated about axis A by worm 1, rotating about fixed axis B, and worm wheel 2. Keyed to shaft 17 are disk 7 with guides and gear 3. Slide block 9 can be adjusted along the guides of disk 7 and locked in the required position by screw 10. Slide block 9 carries the bearing of pin 8 whose projecting part is of semicircular shape. When shaft 17 rotates, pin 8, whose flat surface engages plate 11 which is secured to the base, displaces slides 15 and 16, mounted on carriage 12. At the same time, cam blank 4 is rotated about its axis by gears 3, 5 and 6. The profiled surface of cam 4 is machined by end milling cutter 13 and the required rise of the cam is set up by means of screw 10. The minimum radius of the cam is set up by adjusting milling head slide 14 longitudinally with screw 18. The cam rise per degree of rotation is set up by changing the gears.
$2842$WG,FD$