Model generation system having closed-loop extrusion nozzle posi

Details Model generation system having closed-loop extrusion nozzle posi Model generation system having closed-loop extrusion nozzle posi

1993-03-22

1994-04-12

Smith, Jerry

Boots, shoes, and leggings

364468, 36447424, 364 22, 364 401, 15624411, 425135, G06F 1546

Patent

active

053031415

ABSTRACT:
Apparatus and method for fabricating a three-dimensional object in accordance with a CAD-generated specification of the object. A closed-loop extrusion system (10) includes a nozzle (12) for extruding a material, such as a hot melt adhesive; apparatus (14, 18, 46) for controllably positioning the nozzle in accordance with the specification; and a sensor (60) for generating a feedback signal that is indicative of at least one characteristic of a most recently extruded portion of the material. Visual and non-visual feedback sensors may be employed, including optical sensors, infrared emission sensors, and proximity detection sensors. The specification of the object is converted to a bit-mapped representation thereof to improve accuracy relative to vector-based representations. Methods for determining a need for supporting structures and anti-aliasing features and for integrating the structures and features into the object specification are also disclosed.

REFERENCES:
patent: 3046178 (1962-07-01), Tupper
patent: 3206899 (1965-09-01), Wright
patent: 4143187 (1979-03-01), Pilgrim et al.
patent: 4246335 (1981-01-01), Keogh et al.
patent: 4333420 (1982-06-01), Petri
patent: 4336213 (1982-06-01), Fox
patent: 4564410 (1986-01-01), Clitheros et al.
patent: 4575330 (1986-03-01), Hull
patent: 4640222 (1987-02-01), Gerber
patent: 4665492 (1987-05-01), Masters
patent: 4724302 (1988-02-01), Penney et al.
patent: 4734021 (1988-03-01), Maddock
patent: 4749347 (1988-06-01), Valavaara
patent: 4752352 (1988-06-01), Feygin
patent: 4752498 (1988-06-01), Fudium
patent: 4787332 (1988-11-01), Geisel et al.
patent: 4801477 (1989-01-01), Fudium
patent: 4844144 (1989-07-01), Murphy et al.
patent: 4857694 (1989-08-01), Doyle et al.
patent: 4890235 (1989-12-01), Reger et al.
patent: 4915757 (1990-04-01), Rando
patent: 4961154 (1990-10-01), Pomerantz et al.
patent: 5031120 (1991-07-01), Pomerantz et al.
patent: 5038014 (1991-08-01), Pratt et al.
patent: 5059266 (1991-10-01), Yamane et al.
patent: 5121329 (1992-06-01), Crump
patent: 5134569 (1992-07-01), Masters
patent: 5141680 (1992-08-01), Almquist et al.
Kodama, "Automatic method for fabricating a three-dimensional plastic model with photo-hardening polymer", Rev. Sci. Instrum., vol. 52, No. 11, Nov. 1991, pp. 1770-1773.
The National Conference on Rapid Prototyping, "Shape Melting Technology" Doyle et al. p. 55, Jun. 4-5, 1990.
"Laser Modeling Reduces Engineering Time" by D. A. Belforte, Laser Focus World, Jun. 1989, pp. 103-108.
"3D Modeler Models in Minutes" Product Brochure of Stratasys, Inc. Minneapolis, MN 1990.

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