Cylinder cam 1 has helical groove a. Square shank 3 of cam 1 is connected by a sliding pair to link 2 which rotates about fixed axis A-A. Tapered roller 4 rotates freely about fixed axis B and rolls and slides along groove a. When link 2 rotates, cam 1 rotates about axis A-A and reciprocates along this axis. Thus, cam 1 has a helical motion which depends upon the shape of groove a.
$3058$SmC,3L$