Procedures for rapid build and improved surface characteristics in layered manufacture

US20050131570A1Inactive Publication Date: 2005-06-16JAMALABAD VIKRAM +2
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
JAMALABAD VIKRAM
Publication Date
2005-06-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

Methods for improving layered manufacturing techniques to improve an objects' surface properties and shorten manufacturing time for support structures. One aspect of the invention forms surfaces having reduced or no concavities between layers having improved crack resistance. One method deposits alternate, surface improvement material on each layer near the future location of the main material surface, followed by deposition of the main material, the edges of which conform to the previously deposited and solidified alternate material. In this method, the center of the main material layers can be concave rather than the interlayer regions. Another aspect of the invention provides removable structures to support the deposition of main material. The support structures provide support over main material cavities for depositing the material to form the cavity ceilings, while minimizing the time and material required to build the support structures. Minimized support structures include structures formed as columns supported by the cavity floor and angle braces to supported by the cavity walls. Some supports are supported by the side wall but not the floor, and other by the floor and not the side walls.
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Description

RELATED APPLICATIONS

[0001] The present application is related to co-pending U.S. patent application Ser. No. ______ [1100.1103101], titled TOOL PATH PLANING PROCESS FOR COMPONENT BY LAYERED MANUFACTURE, filed on date even herewith.FEDERAL SPONSORSHIP

[0002] This invention was made with Government support under ______ contract number N00014-94-C-0115, entitled “______”. The Government has certain rights in the invention.FIELD OF THE INVENTION

[0003] The present invention is related generally to machine manufacturing of components. In particular, the present invention is related to rapid prototyping manufacturing including layered manufacturing and solid freeform fabrication. BACKGROUND OF THE INVENTION

[0004] Using conventional techniques, a desired article to be made can initially be drawn, either manually or automatically utilizing a computer-aided design (CAD) software package. The article can be formed by removing material from material stock to form the desired shape in a machi...

Claims

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