Method of computer-aided prediction of collisions between objects including fabrication tools and parts to be fabricated
First Claim
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1. A method of using a computer to design mechanical parts, the method comprising:
- representing a desired mechanical part in the computer in terms of a plurality of convex polyhedra;
representing each of a plurality of fabrication tools in the computer in terms of a plurality of convex polyhedra;
computing a fabrication sequence which could be used to fabricate the part by repeatedly testing whether the part and various ones of the tools would collide if the tools were used in various fabrication steps to make the part, each test being accomplished by solving in the computer a set of linear relations among the polyhedra to determine whether a selected tool would collide with the part during relative motion along a predetermined path during a selected fabrication step; and
communicating the computed fabrication sequence to the designer.
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Abstract
A CAD system and method for designing sheet metal parts. A proposed design is automatically tested against a set of design rules. Available tools are selected according to criteria computed with reference to the part to the fabricated and then are tested to determine whether they can be used to make desired bends. A fabrication sequence is computed.
58 Citations
5 Claims
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1. A method of using a computer to design mechanical parts, the method comprising:
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representing a desired mechanical part in the computer in terms of a plurality of convex polyhedra; representing each of a plurality of fabrication tools in the computer in terms of a plurality of convex polyhedra; computing a fabrication sequence which could be used to fabricate the part by repeatedly testing whether the part and various ones of the tools would collide if the tools were used in various fabrication steps to make the part, each test being accomplished by solving in the computer a set of linear relations among the polyhedra to determine whether a selected tool would collide with the part during relative motion along a predetermined path during a selected fabrication step; and communicating the computed fabrication sequence to the designer. - View Dependent Claims (2, 3, 4, 5)
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Specification
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Current AssigneeAgilent Technologies, Inc.
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Original AssigneeHewlett-Packard Company (HP Inc.)
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InventorsBarford, Lee A., Conradson, Scott A.
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Primary Examiner(s)Beausoliel, Jr., Robert W.
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Assistant Examiner(s)Lo, Allen
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Application NumberUS07/431,945Time in Patent Office1,632 DaysField of Search364/474.24, 364/472, 364/468, 29/400.1, 29/407, 29/404, 29/DIG. 3US Class Current700/103CPC Class CodesG05B 19/4097 characterised by using desi...G06F 2113/24 Sheet materialG06F 30/00 Computer-aided design [CAD]Y02P 90/02 Total factory control, e.g....
