Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Types of cams and follower

4,340 views

Published on

by Rushikesh Raval..........

Published in: Education
  • Be the first to comment

Types of cams and follower

  1. 1. (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…
  2. 2. (1) Radial or Disc cam In radial cams, the follower reciprocates or oscillates in a direction perpendicular to the cam axis.
  3. 3. (2) Cylinrical cam In cylindrical cams, the follower reciprocates or oscillates in a direction parallel to the cams axis.
  4. 4. (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.
  5. 5. (4) Conjugate cam In conjugate cam two disc keyed togather and having contact with two rollers of follower.
  6. 6. (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.
  7. 7. (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.
  8. 8. (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…
  9. 9. (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.
  10. 10. (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.
  11. 11. (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.
  12. 12. (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.
  13. 13. (C) According to type of constraint of the follower (1) Preloaded spring cam (2) Positive-Drive cam TYPES OF CAMS…
  14. 14. (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.
  15. 15. (2) Positive - Drive cam In this type of cam does not required any external force to maintain contact between cam & follower.
  16. 16. ( A ) According to the surface in contact (1) Knife edged follower (2) Roller follower (3) Flat faced follower (4) Spherical faced follower.
  17. 17. (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.
  18. 18. (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.
  19. 19. (3) Flat faced follower In this types of followers follower used in preference to roller follower followers where the space is limited.
  20. 20. (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.
  21. 21. (B) According to motion of the follower (1) Translatory motion follower (2) Oscillating follower.
  22. 22. (1) Translatory motion follower In this type of followers they may have translatory motion.
  23. 23. (2) Oscillating follower In this type of followers they may have an oscillatory motion.
  24. 24. (C) According to the surface in contact (1)Radial follower (2) Offset follower.
  25. 25. (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.
  26. 26. (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

×