Applications and Types of Cams and Followers Geetika K. Gopi
CAMS A cam is a shaped piece of metal or plastic fixed to a rotating shaft. A cam mechanism has three parts: cam , slide and follower . The cam shaft rotates continually, turning the cam. The follower is a rod that rests on the edge of the turning cam. The follower is free to move up and down, but is prevented from moving from side to side by a slide or guide, so the follower can only do three things: Rise (move up) Fall (move down) or Dwell (remain stationary ) The cam and follower can convert rotary motion (circular motion) into linear motion (movement in a straight line).
According to the surface in contact According to the motion of the follower According to the path of motion of the follower
KNIFE EDGE FOLLOWER
ROLLER FOLLOWER*
FLAT FACED FOLLOWER
SPHERICAL FACED FOLLOWER
RECIPROCATING FOLLOWER
OSCILLATING FOLLOWER*
RADIAL FOLLOWER
OFF-SET FOLLOWER
RADIAL CAM
CYLINDRICAL CAM
CAM PROFILES
APPLICATIONS automatic packaging s hoemaking machines typesetting machines printing presses shoe machinery textile machinery gear-cutting machines screw machines sewing machines printing machines diesel engine to operate inlet & exhaust valves of I.C. engine textile machine tools paper cutting machines in switch gear mechanism alarm mechanism of mechanical clocks in lock mechanism automobile engine automatic machine tools