Lecture_14

Lecture_14 - of a line from the rigid body are needed to...

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Kinematics and Dynamics of Machines ENGR 3270U Lecture 14 Yuping He University of Ontario Institute of Technology November 5, 2008
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1.1 6.3 Two-Position Four-bar Linkage Design Graphical Solution Procedure (double rocker) 1) two positions of input link and output link. 2) lengths of O 2 O 4 and O 4 B are given. Design the four bar.
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1.2 Analytical Solution Procedure (double rocker)
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1.3
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1.4 Example 1: Given the ground link and output link lengthes, design a four-bar Grashof crank-rocker to give of rocker rotation with equal time forward and back, from a constant speed motor input. o 45 Two position synthesis 1) rocker output (pure rotation) 2) coupler output (complex motion)
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1.5 6.4 Motion Generation Only the path of one point and the changes in the orientation
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Unformatted text preview: of a line from the rigid body are needed to describe its motion. Supposing ABC is the coupler of a four-bar, determine the linkage. Two Positions Constructing four-bar linkage with positions A1B1 and A2B2. 1.6 Constructing four-bar linkage with positions A1C1 and A2C2, where C1 and C2 to be determined. Locating the fixed pivot if the rigid body moves from A1B1 to A2B2 by a pure rotation about the pivot. 1.7 Three Positions with Selected Moving Pivots Couplers three positions are given. Other two points on the rigid body are selected as moving pivots. 1.8 Synthesis of a Crank with Chosen Fixed Pivots Synthesis of a crank with a selected fixed pivot. Example 2: 1.9 1.10...
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Lecture_14 - of a line from the rigid body are needed to...

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