System for conversion between the boundary representation model and a constructive solid geometry model of an object
Abstract
A system converts from the boundary representation of an object to the constructive solid geometry representation thereof. The system converts the boundary representation of the object into elemental atomic geometrical units or Ibodies which are in the shape of stock primitives or regularized intersections of stock primitives. These elemental atomic geometrical units are then represented in symbolic form. The symbolic representations of the elemental atomic geometrical units are then assembled heuristically to form a constructive solid geometry representation of the object usable for manufacturing thereof. Artificial intelligence is used to determine the best constructive solid geometry representation from the boundary representation of the object. Heuristic criteria are adapted to the manufacturing environment for which the device is to be utilized. The surface finish, tolerance, and other information associated with each surface of the boundary representation of the object are mapped onto the constructive solid geometry representation of the object to produce an enhanced solid geometry representation, particularly useful for computeraided manufacture of the object.
 Inventors:

 Kansas City, MO
 Publication Date:
 Research Org.:
 Kansas City Plant (KCP), Kansas City, MO (United States)
 OSTI Identifier:
 866562
 Patent Number(s):
 US 4736306
 Application Number:
 06/728,367
 Assignee:
 United States of America as represented by United States (Washington, DC)
 DOE Contract Number:
 AC0476DP00613
 Resource Type:
 Patent
 Country of Publication:
 United States
 Language:
 English
 Subject:
 conversion; boundary; representation; model; constructive; solid; geometry; converts; elemental; atomic; geometrical; units; ibodies; shape; stock; primitives; regularized; intersections; represented; symbolic; form; representations; assembled; heuristically; usable; manufacturing; artificial; intelligence; determine; heuristic; criteria; adapted; environment; device; utilized; surface; finish; tolerance; information; associated; mapped; produce; enhanced; particularly; useful; computeraided; manufacture; surface finish; solid geometry; constructive solid; boundary representation; particularly useful; manufacturing environment; /345/700/706/
Citation Formats
Christensen, Noel C, Emery, James D, and Smith, Maurice L. System for conversion between the boundary representation model and a constructive solid geometry model of an object. United States: N. p., 1988.
Web.
Christensen, Noel C, Emery, James D, & Smith, Maurice L. System for conversion between the boundary representation model and a constructive solid geometry model of an object. United States.
Christensen, Noel C, Emery, James D, and Smith, Maurice L. Tue .
"System for conversion between the boundary representation model and a constructive solid geometry model of an object". United States. https://www.osti.gov/servlets/purl/866562.
@article{osti_866562,
title = {System for conversion between the boundary representation model and a constructive solid geometry model of an object},
author = {Christensen, Noel C and Emery, James D and Smith, Maurice L},
abstractNote = {A system converts from the boundary representation of an object to the constructive solid geometry representation thereof. The system converts the boundary representation of the object into elemental atomic geometrical units or Ibodies which are in the shape of stock primitives or regularized intersections of stock primitives. These elemental atomic geometrical units are then represented in symbolic form. The symbolic representations of the elemental atomic geometrical units are then assembled heuristically to form a constructive solid geometry representation of the object usable for manufacturing thereof. Artificial intelligence is used to determine the best constructive solid geometry representation from the boundary representation of the object. Heuristic criteria are adapted to the manufacturing environment for which the device is to be utilized. The surface finish, tolerance, and other information associated with each surface of the boundary representation of the object are mapped onto the constructive solid geometry representation of the object to produce an enhanced solid geometry representation, particularly useful for computeraided manufacture of the object.},
doi = {},
url = {https://www.osti.gov/biblio/866562},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {4}
}