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Direct metal electrophotography additive manufacturing machine

An additive, manufacturing system technology, applied in the field of systems and processes for building 3D components, which can solve problems such as inability to build closed spaces, limited design freedom, heavy loads and size restrictions

Active Publication Date: 2017-06-13
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, the limitation of trapped powder is that it is not possible to build enclosures because the powder cannot be evacuated
Current requirements for evacuated powder can also limit design freedom
Also, current DMLM machines apply large thermal stresses to parts due to rapid build material solidification, creating geometric distortions and sometimes cracks in the parent material
Additionally, the entire platform must be relieved of stress prior to cutting, which is difficult for large components due to the heavy load and size limitations of commonly available furnaces

Method used

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  • Direct metal electrophotography additive manufacturing machine
  • Direct metal electrophotography additive manufacturing machine
  • Direct metal electrophotography additive manufacturing machine

Examples

Experimental program
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Embodiment Construction

[0083] Reference will now be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. The detailed description uses numerical and letter designations to refer to features in the figures. The same or similar names in the drawings and descriptions are used to refer to the same or similar parts of the present invention.

[0084] Attached now, figure 1 and 2 An exemplary embodiment of an additive manufacturing system 10 is shown, depicted as a cross-section of a Direct Metal Electron Electron Machine (DME) for printing three-dimensional parts, having a movable housing 12 defining a front housing Body section 14 and rear housing section 16 .

[0085] figure 1 and 2 The exemplary additive manufacturing system 10 includes a photoreceptor drum 18 having an outer drum surface 19 positioned within a movable housing 12 . Although photoreceptor drum 18 is shown centrally disposed within movable housing 12, any suitable configurat...

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Abstract

An additive manufacturing system (10) can include a mobile housing (12) defining a front housing section (14) and rear housing section (16); a photoreceptor drum (18) defining a drum outer surface (19); a charging electrode (40) positioned to apply electrostatic charge to the photoreceptor drum outer surface (19); a laterally stationary platform (72) disposed outside the mobile housing (12) and having at least one charged transfer electrode (74); a controller circuit (56) for traversing the mobile housing (12) while selectively applying at least one laser diode (54) emission or LED array emission onto the photoreceptor drum (18) to expose a layer definition on the photoreceptor drum outer surface (19); front and rear microwave emitters disposed inside the mobile housing for fusing respective metal print layers; and front and rear induction coils disposed inside the mobile housing for heating a workpart.

Description

technical field [0001] The subject matter generally relates to additive manufacturing systems and methods for building three-dimensional (3D) parts. In particular, the present disclosure relates to systems and processes for building 3D parts using metallic materials with direct metal electrophotography (DME) based systems and / or ion radiography based systems. Background technique [0002] The 3D part is built using one or more additive manufacturing techniques from a digital representation of the 3D part (eg, AMF and STL format files) using an additive manufacturing system. Examples of commercially available additive manufacturing techniques include extrusion-based techniques, inkjet, selective laser sintering, powder / binder jetting, electron beam melting, direct metal laser melting (DMLM), and stereolithography processes. For each of these techniques, the digital representation of the 3D part is initially sliced ​​into multiple horizontal (X-Y) layers. For each slice laye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00B33Y30/00B33Y40/00
CPCG03G15/225B22F2999/00G03G15/224B22F10/00B22F12/44B22F10/28B22F12/45B22F12/38B22F12/47B22F12/10B22F12/42B22F12/41B22F12/50B22F12/49B22F10/73B22F10/34B22F2202/05B22F2202/11B33Y10/00B33Y30/00B33Y40/00B22F3/003B22F2003/1054B22F2003/1053B22F2003/1051B33Y50/02Y02P10/25
Inventor J.T.莫克W.T.卡特
Owner GENERAL ELECTRIC CO