Manufacturability Analysis of Flatness Tolerances in Solid Freeform Fabrication

[+] Author and Article Information
Ramakrishna Arni, S. K. Gupta

Mechanical Engineering Department and Institute for Systems Research, University of Maryland, College Park, MD 20742

J. Mech. Des 123(1), 148-156 (Sep 01, 1999) (9 pages) doi:10.1115/1.1326439 History: Received September 01, 1999
Copyright © 2001 by ASME
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Composite mathematical model
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A band on a unit sphere
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A simple manufacturable part showing the required flatness accuracies
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The feasibility regions for the part shown in Fig. 11
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Feasibility region for case 2 in Section 4.1.2
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Computing the value of θcr for a given value of γ
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Finding the values of xmax and xmin
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Drawing of the example part (not to scale)
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Two cases of manufacturability analysis for the example
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Set of feasible build orientations
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Effect of orientation on accuracy
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Building faces when the angle between the face normal and build vector is close to zero or π
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Effect of xy and z errors on the flatness error
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Effect of angle between build and face normal vectors
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Projection of a planar face on the build vector




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