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RESEARCH PAPERS

Interactive Visualization of the Coupler Surfaces of the Spatial 4C Mechanism

[+] Author and Article Information
Pierre M. Larochelle

Mechanical & Aerospace Engineering Department, Florida Institute of Technology, Melbourne, FLpierrel@fit.edu

Agnes M. Agius

Mechanical & Aerospace Engineering Department, Florida Institute of Technology, Melbourne, FL

Source code for SPASUR is available on request from the author.

J. Mech. Des 127(6), 1122-1128 (Mar 14, 2005) (7 pages) doi:10.1115/1.2049067 History: Received December 16, 2004; Revised March 14, 2005

This paper presents a methodology for generating and displaying the coupler surfaces of the spatial 4C mechanism. The 4C mechanism is a two-degree-of-freedom spatial four-bar linkage. The path traced by a point attached to the coupler or floating link defines a surface in space. It is shown that the coupler surface of the spatial 4C mechanism is a ruled surface with 16thdegree directrices. An interactive graphical user interface has been created and integrated with kinematic analysis routines to generate and interactively display these coupler surfaces. The result is a user-friendly and efficient means of generating and visualizing the coupler surfaces of the spatial 4C four-bar mechanism.

FIGURES IN THIS ARTICLE
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Copyright © 2005 by American Society of Mechanical Engineers
Topics: Mechanisms
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References

Figures

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Figure 1

Spatial 4C mechanism

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Figure 2

Spherical four-bar image

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Figure 3

Forward kinematic analysis

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Figure 4

Sample spatial PCCC coupler curves

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Figure 5

Sample spatial RCCC coupler curves

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Figure 6

Quadrilateral primitives used to render the coupler surfaces

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Figure 7

Spatial 4C crank-rocker coupler surfaces

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Figure 8

Spatial 4C crank-rocker: One coupler surface with joint axes

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Figure 9

Crank-rocker mechanism data and user interface

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Figure 10

Spatial 4C double-rocker coupler surface

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Figure 11

Spatial 4C double-rocker coupler surface: Modified θ range

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Figure 12

Double-rocker mechanism data and user interface

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Figure 13

Virtual reality representation of a coupler surface

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