Method and apparatus for tolerancing three dimensional drawings

Details Method and apparatus for tolerancing three dimensional drawings Method and apparatus for tolerancing three dimensional drawings

1993-03-29

1998-06-23

Zimmerman, Mark K.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

G06T 1700

Patent

active

057710449

ABSTRACT:
A computer-aided design system includes a method and apparatus for defining various datums with respect to a three dimensional object shown on the CAD system. The datum is labeled on the computer screen. The computer screen includes a cursor and menus for selecting a datum and various tolerance types with respect to the datum or a face related to the datum. A tolerance type and numerical value is selected for the tolerance and is also displayed on the screen. A geometric element from the CAD model or object displayed is selected to which the tolerance applies to the selected element. Data relating to the tolerance data, the geometric element, and the datum are stored within the computer. Linkage relationships are used to relate the data stored.

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IBM Technical Disclosure Bulletin, vol. 27, No. 10A, Mar. 1985 -"Three Dimensional Mechanical Part Measurement Using A Vision/Robot System".

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