The cam consists of main lobe member 1, rotating about fixed axis A, and lobe member 2 which can be adjusted to various positions with respect to member 1. For the purpose of adjustment, member 2 has curvilinear slot a, which can slide a long bolt D, and straight s lot b, which can slide along the shaft of member 1. Lobe member 2 can be rigidly clamped on member 1 by means of a nut on bolt D. Follower 3 reciprocates in fixed guides B-B and carries rollers 4 and 5 which roll along the working surface of the cam. By clamping member 2 in various positions, the stroke of follower 3 can be varied within the limits from x_min to x_max. Roller 4 can be adjusted to various positions a long follower 3 by a screw device. The working surface of cam member 1 acts alternately on rollers 5 and 4. The rollers are held in contact with the cam by special springs (not shown). Impacts occur when the rollers come into contact with the lobe members.
$3142$SmC,LL$