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Lecture_16 - Kinematics and Dynamics of Machines ENGR 3270U...

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Kinematics and Dynamics of Machines ENGR 3270U Lecture 16 Yuping He University of Ontario Institute of Technology November 12, 2008
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1.1 Chapter 8 Profile Cam Design 8.1 Introduction Cam (driving link) Transmit Motion Follower (driven link) Advantage compared with linkage compact (small sized) specific output displacement, e.g. dwell. Motion depends directly on cam shape Disadvantage compared with linkage high manufacturing expense poor wear resistance poor high-speed capability (e.g noise, follower bounce) Procedure of cam design 1) Synthesis of the motion program for the follower 2) Generation of the cam profile
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1.2 8.2 Cam-Follower Systems Elements of a cam-follower system 1) Cam 2) Follower 3) Spring Common type (1) Rotating Disc Cam with reciprocating or oscillating follower Usually follower is held on the cam by a spring (compression or torsion) But not always Face Cam
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1.3 (2) Cylindrical Cams cam follower (3) Translation Cams
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