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Linear Cam

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Revision as of 09:08, 26 August 2016 by DT Online (talk | contribs) (Added animation)
Lc.gif


Description

Linear cams move backwards and forwards in a reciprocating motion and the shape of the surface of the cam determines how far, and in what manner, the ‘follower’ moves in response.


Features and Applications

Most cams are design using a Displacement Diagram - essentially a graph which plots the cam movement against the follower movement. A linear cam can be imagined to be the shape of the graph cut from solid plate and then passed backwards and forwards beneath the follower.


Note: A simple wedge can be regarded as a basic form of linear cam - when driven into the end of a timber log, or used as an axe, the wedge transfers the vertical linear motion of the hammer into a horizontal force which spilts the wood.


Animation
Nguyen Duc Thang's example of a Linear Cam - as the Cam Plate Reciprocates, the Follower Rises at one end of the stroke and Falls at the other with periods of Rest in between
DT Online Buyers' Guide
  • The use of Cams can most easily be explored using Contruction Kits such as those listed below.

Click top left to enlarge

Engino Engino Fischertechnik 536622 - Mechanic & Static 2 Engino Mechanisms Set Engino Gears Set
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