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Safety protection method and apparatus for additive manufacturing device

Active Publication Date: 2013-10-24
ARCAM AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The objective of this patent is to offer ways to make additive manufacturing safer by reducing or eliminating certain safety concerns.

Problems solved by technology

An additive manufacturing apparatus comprises inter alia a beam source, a powder distributor and other mechanically moving parts which, if not securely switched off, may be harmful to an operator or service personnel.
A problem with a completely dead device is that even the non-harmful devices are not working which may be annoying and / or problematic in some situations.
Another problem is that the power switch may be forgotten to be switched off.
Safe powder handling may also incorporate the insurance that the recirculated powder is clean from any foreign impurities which may destroy the performance of the manufactured three dimensional article, which in turn may cause a safety problem where the final article end up.

Method used

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  • Safety protection method and apparatus for additive manufacturing device
  • Safety protection method and apparatus for additive manufacturing device
  • Safety protection method and apparatus for additive manufacturing device

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Embodiment Construction

[0048]Various embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the inventions are shown. Indeed, the various embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.

[0049]To facilitate the understanding of this invention, a number of terms are defined below. Terms defined herein have meanings as commonly understood by a person of ordinary skill in the areas relevant to the present invention. Terms such as “a”, “an” and “the” are not intended to refer to only a singular entity, but include the general class of which a specific example may be used for illustration. The terminology herein is used to describe specific embodiments of the invention, but their usage does not delimit the invention,...

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Abstract

A method for providing safety protection in an additive manufacturing apparatus for forming a three-dimensional article through successive fusion of parts of a powder bed in an enclosable chamber, which parts corresponds to successive cross sections of the three-dimensional article is provided. The method comprising the steps of providing a position detecting device connected to a control unit to detect whether a foreign matter is within the enclosable chamber. The method may also include, upon detecting that the foreign matter is within the enclosable chamber, either (1) switching off, via the control unit, at least one device associated with the additive manufacturing apparatus; or (2) providing power to a powder suction device. Associated safety protection devices are also provided.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of and claims priority to and the benefit of International Application No. PCT / EP2012 / 057470, filed Apr. 24, 2012, the contents of which are hereby incorporated by reference in its entirety.BACKGROUND[0002]1. Field of the Invention[0003]Various embodiments of the present invention relate to a method and apparatus for providing safety protection in an additive manufacturing device.[0004]1. Description of Related Art[0005]Freeform fabrication or additive manufacturing is a method for forming three-dimensional articles through successive fusion of chosen parts of powder layers applied to a worktable.[0006]An additive manufacturing apparatus may comprise a work table on which said three-dimensional article is to be formed, a powder dispenser, arranged to lay down a thin layer of powder on the work table for the formation of a powder bed, an energy beam for delivering energy to the powder whereby fusion of th...

Claims

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Application Information

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IPC IPC(8): G01B11/14
CPCG01B11/14B33Y40/00Y02P10/25B22F10/28B22F12/52B22F10/73B22F10/36B22F12/222B22F12/55B22F10/32B22F12/90Y02P10/20
Inventor LOEWGREN, LARS
Owner ARCAM AB
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