Rapid making of a prototype part or mold using stereolithography

Details Rapid making of a prototype part or mold using stereolithography Rapid making of a prototype part or mold using stereolithography

1995-03-03

1997-04-01

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Stereolithographic shaping from liquid precursor

264221, B29C 3340, B29C 3508, B29C 4102

Patent

active

056162936

ABSTRACT:
A structural prototype of the component part is made by first creating a model of the part which is of cured resin and has a network of interconnected supporting members defining the shape of the part and leaving channels between the supporting members to drain away uncured resin from the model. A hardenable structural material is infiltrated into the channels of the model and cured so that the resin model has become reinforced to provide a structural model of the component part. The hardenable structural material may be a mixture of powdered graphite and resin which is cured by heat. The heat may be sufficient to both cure the hardenable structure material and burn away the cured resin of the model so that the component part is then comprised of the hardened structural material having a network of channels therein where the cured resin of the model has been burned away. The model can then be further strengthened by filling the network of channels with a suitable hardenable material. The method can also be used to make a mold to be used in making a molded component.

REFERENCES:
patent: 4844144 (1989-07-01), Murphy et al.
patent: 5256340 (1993-10-01), Allison et al.
Abstract of Japan 5-24,118 (Published Feb. 2, 1993).
Abstract of Japan 5-131,244 (Published May 28, 1993).
Abstract of Japan 6-297,251 (Published Oct. 25, 2994).

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