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Supporting solution for "in air" geometries in 3D additive manufacturing

A 3D, support bridge technology, applied in the field of support solutions for "hanging" geometries used in 3D additive manufacturing, able to solve problems such as bending, warping and crushing, poor surface finish, not so smooth, etc.

Active Publication Date: 2019-07-16
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction in strength results in the inability of the molten filament to span any significant amount of unsupported length; accordingly, in the unsupported length, the molten filament can bend, warp and crumble, which can result in suboptimal surface finish and / or a failed print
These defects can be minimized by printing more support structures, but as discussed above, printing support structures can be a time and resource consuming process
Furthermore, each point of contact between the support structure and the bottom surface of the unsupported surface creates a defect in the unsupported surface, as removal of the support structure from the unsupported surface can be difficult and often results in less smooth s surface

Method used

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  • Supporting solution for "in air" geometries in 3D additive manufacturing
  • Supporting solution for "in air" geometries in 3D additive manufacturing
  • Supporting solution for "in air" geometries in 3D additive manufacturing

Examples

Experimental program
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Embodiment Construction

[0040] figure 1 is a cross-sectional perspective view of an example 3D object 100 printed using a 3D printing process (ie, a 3D printer (not shown)). The 3D object 100 may for example be printed by starting at the base layer 101 and adding successive layers to the base layer 101 in direction 102 until a final top layer 103 is reached. exist figure 1 The illustrated example 3D object 100 shown in includes a side portion 104 , a top portion 105 and a recessed portion 106 .

[0041] as in figure 1 As shown in , 3D object 100 may also include unsupported layers. For example, the illustrated 3D object 100 includes a first unsupported layer 107 and a second unsupported layer 108 that are printed above a base layer 102 and below a final layer 103 (although in the example the final top layer 103 can also be an unsupported layer). First and second unsupported layers 107 and 108 include first and second unsupported surfaces 109 and 110, respectively, which cannot be supported by la...

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PUM

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Abstract

A support bridge for supporting an in-air surface of a three-dimensional (3D) object during a print process includes a first end, a second end, and a horizontal span that spans between the first end and the second end. The first end, second end, and span are situated in an intermediate layer, and the first end and second end of the support bridge contact, respectively, first and second surfaces ofan abutment layer of the 3D object. The support bridge is constructed during the print process and is configured to support the in-air surface of the 3D object.

Description

technical field [0001] The present invention relates to providing support to otherwise unsupported surfaces during 3D additive manufacturing, and more specifically, to providing support while optimizing the amount of printing material necessary and in a manner by which such support can be easily removed. This kind of support. Background technique [0002] 3D printing or additive manufacturing is the process of making 3D solid objects based on blueprints provided through digital files. Composition of the desired 3D object is achieved by strategically generating successive layers of additive material (ie, printing material) in a pattern on the platform of the 3D printer until the entire object is created. The construction of the 3D object is driven by a digital file that provides instructions describing how to create the pattern of layers and materials used to generate the object. Digital files of specified designs are provided by the user, and digital files read by a 3D pri...

Claims

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Application Information

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IPC IPC(8): B29C64/40B33Y10/00B29C64/106
CPCB29C64/106B29C64/40B29C64/386B33Y10/00B33Y30/00B33Y50/02B33Y80/00
Inventor B.纳吉G.A.赫尔曼
Owner ROBERT BOSCH GMBH