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Methods using ghost supports for additive manufacturing

A support, powder bed technology, used in machining, manufacturing, tooling, additive manufacturing, etc., can solve problems such as tool-less path programming

Active Publication Date: 2019-03-15
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operator can define or adjust various parameters of the sweep pattern, such as power, speed, and spacing, but generally does not directly program the tool path

Method used

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  • Methods using ghost supports for additive manufacturing
  • Methods using ghost supports for additive manufacturing
  • Methods using ghost supports for additive manufacturing

Examples

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Embodiment Construction

[0016] The detailed description, set forth below in conjunction with the accompanying drawings, is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a comprehensive understanding of various concepts. It will be apparent, however, to one skilled in the art that these concepts may be practiced without these specific details. In some instances, well-known components are shown in block diagram form in order not to obscure such concepts.

[0017] During many additive manufacturing processes such as DMLM and DMLS, heat from previously scanned portions of an object can affect the scan of nearby portions of the object. For example, heat can cause unintentional melting or sintering of the powder, which can result in objects with unintentionally fused portions or otherwise deformed objects. T...

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Abstract

The present disclosure generally relates to methods for additive manufacturing (AM) that utilize ghost support structure in the process of building objects, as well as novel ghost support structures to be used within these AM processes. The ghost support structures include a portion of powder that is scanned with an energy beam having insufficient power to fuse the powder. The ghost supports control timing of the additive manufacturing process and allow portions of the object to cool to a desired temperature before adjacent portions of the object are scanned.

Description

technical field [0001] The present disclosure generally relates to methods for additive manufacturing (AM) using support structures in the process of building objects, and novel support structures to be used within these AM processes. Background technique [0002] In contrast to subtractive manufacturing methods, the AM process generally involves accumulating one or more materials to fabricate a net or near net shape (NNS) object. Although "Additive Manufacturing" is an industry standard term (ASTM F2792), AM encompasses a variety of manufacturing and prototyping techniques known under various names, including freeform fabrication, 3D printing, rapid prototyping / tooling, and more. AM technology enables the fabrication of complex components from a wide variety of materials. In general, freestanding objects can be fabricated from computer-aided design (CAD) models. Certain types of AM processes use energy beams (eg, electron beams or electromagnetic radiation such as laser b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B29C64/393
CPCB29C64/393B22F2999/00B33Y50/02B29C64/153B29C64/282B33Y10/00B22F10/47B22F10/28B22F10/36B22F10/366B22F12/90Y02P10/25B22F2203/03B22F2202/11B22F2203/11B29L2009/00
Inventor S.A.戈尔德P.M.肯尼
Owner GENERAL ELECTRIC CO