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Three-dimensional Manufacturing Apparatus And Three-dimensional Manufacturing Method

A technology of three-dimensional manufacturing and control department, applied in the direction of manufacturing tools, additive manufacturing, auxiliary molding equipment, etc., can solve the problem of difficult adjustment of heating, and achieve the effect of reducing the total amount

Active Publication Date: 2017-10-20
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the beam spot moves along the boundary between the curing area and the non-curing area, it is difficult to individually adjust the heating amount per unit area for the curing area and the non-curing area

Method used

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  • Three-dimensional Manufacturing Apparatus And Three-dimensional Manufacturing Method
  • Three-dimensional Manufacturing Apparatus And Three-dimensional Manufacturing Method
  • Three-dimensional Manufacturing Apparatus And Three-dimensional Manufacturing Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The three-dimensional manufacturing apparatus in Example 1 heats the non-cured region with the second laser beam while heating the solidified region with the first laser beam, and melts the solidified region and the non-cured region to integrally solidify the region. In addition, the three-dimensional manufacturing apparatus sets the heating amount per unit area in the region that has been heated with the first laser beam to become larger than the heating amount per unit area in the region heated with the second laser beam. Therefore, the three-dimensional manufacturing device can reduce the fume generation itself in the powder bed fusion bonding technique.

[0026] (3D manufacturing device)

[0027] figure 1 It is an explanatory diagram of the structure of the three-dimensional manufacturing apparatus of Example 1. The powder bed fusion joining technique can produce small quantities and various types of manufactured products and manufactured products having complex ...

Embodiment 2

[0083] Such as Figure 5A to Figure 5C As shown, the three-dimensional manufacturing apparatus in Embodiment 1 causes the beam spots 110A and 110B of the laser beams 109A and 109B to partially overlap each other, and heats the layer 132 of the powder material. In contrast, in Embodiment 2, the beam spot of the laser beam 109B at the surface position of the surface layer 132 is separated from the beam spot of the laser beam 109A. The three-dimensional manufacturing apparatus scans the layer 132 while maintaining a state where the beam spots 110A and 110B of the laser beams 109A and 109B are separated from each other, thereby heating the layer 132 of the powder material 131 .

[0084] (Characteristics of beam spots)

[0085] Figures 8A-8C It is an explanatory drawing of the laser beam in Example 2. Figure 8A is the planar view of the beam spot, Figure 8B is along Figure 8A A cross-sectional view taken on line 8B-8B, and Figure 8C It is an explanatory diagram of the in...

Embodiment 3

[0099] Such as Figure 5A As shown, in Embodiment 1, the layer 132 of the powder material 131 has been scanned and heated in a state where the positional relationship in the main scanning direction between the beam spots 110A and 110B is fixed. In contrast, in Embodiment 3, the positions of the beam spots 110A and 110B in the main scanning direction are variably controlled during the main scanning. In addition, with regard to the positions of the beam spots 110A and 110B in the moving direction along the boundary K, the laser beam 109A that heats the non-cured region 301 is located in a region where the beam spot of the laser beam 109B that heats the solidified region 302 is melted and solidified later. in the area.

[0100] (laser beam control)

[0101] Figure 9A and Figure 9B It is an explanatory diagram of laser beam control in Example 3. Figure 9A is the planar view of the beam spot, Figure 9B is a conceptual diagram of the intensity distribution of the laser bea...

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Abstract

A three-dimensional manufacturing apparatus and a three-dimensional manufacturing method easily adjust a heating quantity per unit area individually for a solidified region and a non-solidified region of a powder material. A layer formation unit forms a layer of a powder material. Light sources and heat scanning units heat the layer by laser beams. The laser beam heats a solidified region in which the powder material has been fused and solidified. The laser beam heats the non-solidified region of the powder material, which is adjacent to the solidified region. The controlling section controls the light sources and the heat scanning units so as to move the laser beams along a boundary between the solidified region and the non-solidified region, and to fuse and solidify a manufacturing region of the layer.

Description

technical field [0001] The present invention relates to a three-dimensional manufacturing device and a three-dimensional manufacturing method for manufacturing a three-dimensionally manufactured object by using energy beams. Background technique [0002] In recent years, a three-dimensional manufacturing method for manufacturing a three-dimensionally manufactured object by a powder bed fusion bonding technique in which heat treatment is performed using an energy beam has been gradually developed. In the powder bed fusion bonding technology that performs heat treatment by using energy beams, fine particles called fumes, which are formed by a process in which powders of raw materials have been vaporized by energy beams and is solidified. [0003] The device described in Japanese Patent Application Laid-Open No. 2010-132961 forms an inert gas flow in the device, and exhausts the smoke that has been generated in the device from the device. The device described in Japanese Pate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B28B1/00B33Y10/00B33Y30/00
CPCB33Y10/00B33Y30/00B28B1/001B22F10/00B22F12/70B22F10/28B22F10/36B22F10/32B22F12/45B22F12/41B22F2999/00B22F2203/11B22F2203/13B33Y50/02Y02P10/25B28B17/0081B28B17/04
Inventor 水野智康木谷耕治
Owner CANON KK
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