(A) According to type of shape

(1) Radial or Disc cam(2) Cylinrical cam(3) Translation or Wedge cam(4) Conjugate cam(5) Globoidal cam(6) Spherical cam

Types of cams…

(1) Radial or Disc cam

In radial cams, the follower reciprocates or oscillates in a direction perpendicular to

the cam axis.

(2) Cylinrical cam

In cylindrical cams, the follower reciprocates or oscillates in a direction

parallel to the cams axis.

(3) Translation or Wedge cam

In wedge cam the cam has translatory motion and profile of the cam is formed on one side of the cam.

(4) Conjugate cam

In conjugate cam two disc keyed togather and having contact with two

rollers of follower.

(5) Globoidal cam

In globoidal cams have convex or concave type surface cut on circumference of cam

which impart motion to the follower to oscillate about the fulcrum.

(6) Spherical cam

In spherical cam the form of spherical shape which transmit the motion to the follower to oscillate about an axis perpendicular to the

axis of rotation of cam.

(B) According to type Of follower movement

(1) Dwell-Rise-Dwell-Return-Dwell ( D-R-D-R-D ) cam

(2) Dwell-Rise-Return-Dwell (D-R-R-D) cam(3) Rise-Return-Rise (R-R-R) cam(4) Dwell-Rise-Dwell (D-R-R) cam.

Types of Cams…

(1) Dwell-Rise-Dwell-Return-Dwell (D-R-D-R-D) cam

In this type of cam there is dwelling of the follower followed by rise and dwell and

subsequently by return and dwell period.

(2) Dwell-Rise-Return-Dwell (D-R-R-D) cam

In this type of cam there is rise and return preceded and followed by dwell

period of follower.

(3) Rise - Return - Rise (R-R-R) cam

In type of cam there is alternate rise and return of the follower with no periods of dwells.The

follower has a linear or an angular displacement.

(4) Dwell – Rise - Dwell (D-R-R) cam

In this type of cam there is dwelling of follower followed by rise and dwell and

subsequently.

(C) According to type of constraint of the follower

(1) Preloaded spring cam

(2) Positive-Drive cam

TYPES OF CAMS…

(1) Preloaded spring cam

In this type of cam a preloaded compression spring is used for the

purpose of keeping contact between the cam and follower.

(2) Positive - Drive cam

In this type of cam does not required any external force to maintain

contact between cam & follower.

( A ) According to the surface in contact

(1) Knife edged follower(2) Roller follower(3) Flat faced follower(4) Spherical faced follower.

(1) Knife edged follower

In this type of followers are simple in construction and the motion between the follower and the cam is of sliding motion.

(2) Roller follower

In this type of followers sliding motion of knife edged follower is replaced by rolling at low

speeds but at high speeds, the sliding motion of the roller can not be completely eliminated.

(3) Flat faced follower

In this types of followers follower used in preference to roller follower

followers where the space is limited.

(4) Spherical faced follower

In this type of followers to minimize the surface stresses produced in flat faced

follower, the flat end of follower is machined to a spherical shape called

spherical faced follower.

(B) According to motion of the follower

(1) Translatory motion follower

(2) Oscillating follower.

(1) Translatory motion follower

In this type of followers they may have translatory motion.

(2) Oscillating follower

In this type of followers they may have an oscillatory motion.

(C) According to the surface in contact

(1)Radial follower

(2) Offset follower.

(1) Radial follower

When the motion of the follower is along an axis passing through the centre of the

cam, it is known as radial followers. Above figures are examples of this type.

(2) Offset follower

When the motion of the follower is along an axis away from the axis of the cam centre, it is called off-set follower. Above figures are

examples of this type