Radial Cam: Difference between revisions
From DT Online
(Added lever follower animation) |
(Added Template) |
||
| Line 1: | Line 1: | ||
[[File:SnailCam.gif|300px|right]][[File:Lf.gif| | [[File:SnailCam.gif|300px|right]][[File:Lf.gif|200px|right]] | ||
__TOC__ | |||
=====Description===== | |||
[https://en.wikipedia.org/wiki/Cam '''Radial Cams'''] are one of the most common types of ‘cam’. The ‘radial cam’ is a rotating plate or disc with an outer circumference shaped to produce a required movement ''(usually linear)'' to a [https://en.wikipedia.org/wiki/Cam_follower '''‘follower’'''] which is held against it. | [https://en.wikipedia.org/wiki/Cam '''Radial Cams'''] are one of the most common types of ‘cam’. The ‘radial cam’ is a rotating plate or disc with an outer circumference shaped to produce a required movement ''(usually linear)'' to a [https://en.wikipedia.org/wiki/Cam_follower '''‘follower’'''] which is held against it. | ||
=====Features and Applications===== | |||
The radial cam may be a simple recognisable shape, such a circle or ellipse, or may be more a complex profile producing variations in the speed and magnitude of the follower movement, moments of ''''dwell’''' or a ''''sudden drop’''' - as with the ''''snail cam’''' shown. The sequence of follower movements is designed using a '''[[Displacement Diagram]]''' and the cam shaped accordingly. | The radial cam may be a simple recognisable shape, such a circle or ellipse, or may be more a complex profile producing variations in the speed and magnitude of the follower movement, moments of ''''dwell’''' or a ''''sudden drop’''' - as with the ''''snail cam’''' shown. The sequence of follower movements is designed using a '''[[Displacement Diagram]]''' and the cam shaped accordingly. | ||
| Line 14: | Line 18: | ||
{{Cams & Cranks Buyers Guide}} | |||
[[Category:Secondary]] | [[Category:Secondary]] | ||
[[Category:Cams]] | [[Category:Cams]] | ||
Revision as of 14:14, 3 August 2016
Description
Radial Cams are one of the most common types of ‘cam’. The ‘radial cam’ is a rotating plate or disc with an outer circumference shaped to produce a required movement (usually linear) to a ‘follower’ which is held against it.
Features and Applications
The radial cam may be a simple recognisable shape, such a circle or ellipse, or may be more a complex profile producing variations in the speed and magnitude of the follower movement, moments of 'dwell’ or a 'sudden drop’ - as with the 'snail cam’ shown. The sequence of follower movements is designed using a Displacement Diagram and the cam shaped accordingly.
A 'follower’ may simply be a rod, constrained by guides, to slide up and down in a reciprocating motion, as the cam, which it rests upon, rotates underneath it - i.e. as push-rods of some car engines are driven up and down by the engine camshaft. The ends of the 'follower’ may be flat, round, wedge-shaped or pointed for different service conditions or may terminate with a roller for increased wear resistance.
Followers may also be in the form of a lever and when used against these, the cam generates an oscillatory movement.
|
Click top left to enlarge |
 
|
|
|
|
|
| Engino "STEM Mechanics" Cams and Cranks Set
|
Engino "STEM Mechanics" Levers and Linkages Set
|
Fischertechnik 536622 - Mechanic & Static 2
|
Engino Mechanisms Set
|
Engino Gears Set
|