Automatic dimensioning in computer aided design

Details Automatic dimensioning in computer aided design Automatic dimensioning in computer aided design

1995-06-07

1998-03-17

Feild, Joseph H.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

395964, 345443, G06F 1750

Patent

active

057297509

ABSTRACT:
Substantially automatic dimensioning is performed in computer aided design for a design item. For this purpose, different kinds of constituent elements are registered in different tables based on which provisional dimensioning is performed along an X-axis and a Y-axis to generate provisional dimensioning lines in different stages. Then, the provisional dimensioning lines are rearranged in a manner such that larger valued dimensioning lines are located farther from the design item than smaller valued dimensioning lines. Leader dimensioning may be further performed with respect to such elements as 45.degree.-chamfer elements, arc elements, circles and section bores.

REFERENCES:
patent: 4855939 (1989-08-01), Fitzgerald, Jr. et al.
patent: 5539868 (1996-07-01), Hosoya et al.
patent: 5548706 (1996-08-01), Koizumi et al.
patent: 5548707 (1996-08-01), LoNegro et al.
Dori, Dov, "Intelligent Automatic Dimensioning of CAD Engineering Machine Drawing," Internationl Journal of Robotics and Automation, vol. 5, No. 3, pp. 124-130, Jan. 1990.
Dori, Dov, "Dimensioning Analysis: Toward Automatic Understanding of Engineering Drawings," Communications of the ACM, vol. 35, No. 10, pp. 92-103, Oct. 1992.

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