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Nozzle with laser scanning head for direct metal deposition

A laser scanner, direct technology, applied in the field of laser scanners, which can solve problems such as expensive and infeasible large parts

Inactive Publication Date: 2018-06-08
DM3D TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, forming melt pools of different configurations, for example, square, rectangular, and elliptical pools, has proven problematic, requiring complex adjustments to the optics involved.
[0005] Due to these limitations, the use of direct material deposition to fabricate large components has proven to be prohibitively expensive and thus not commercially viable in many cases

Method used

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  • Nozzle with laser scanning head for direct metal deposition
  • Nozzle with laser scanning head for direct metal deposition
  • Nozzle with laser scanning head for direct metal deposition

Examples

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Embodiment Construction

[0015] refer to figure 1 , an illustrative apparatus of the present invention is shown generally at 10 . The processing head 12 is mounted on a motion system 14 . The kinematic system 14 adopts a multi-way mechanical arm, a linear double-axis stage or can be moved along the direction indicated by the arrow 16 ( Figure 5 ) identifies the first path moving processing head 12 in the form of other equivalent means.

[0016] The processing head 12 generates a laser beam 18 in a manner explained further below. Laser beam 18 forms weld pool 20 on workpiece 22 using closed-loop processing in the manner set forth in US Patent No. 6,925,346, the disclosure of which is incorporated herein by reference. Nozzle 24 directs material received from material source 26 , eg, powdered metal, powdered ceramic, wire, and strip, into molten pool 20 .

[0017] like figure 2 As best shown, the processing head 12 includes a laser source 28 , such as a fiber optic, diode laser, and equivalent cap...

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Abstract

An apparatus for performing direct material deposition upon a substrate for generating a three dimensional object includes a motion system for moving an head. The head includes a laser for generatinga laser beam and a laser scanner for directing the laser beam at the substrate for generating a melt pool at the substrate. A nozzle delivers material into the melt pool generated by the laser beam for forming a bead of material upon the substrate. The laser scanner is cooperable with the motion system, which is moveable along a first path while the laser scanner is simultaneously moveable along asecond path for progressively generating a bead of material deposited upon the substrate.

Description

[0001] prior application [0002] This application claims priority to US Provisional Patent Application 62 / 205,361, filed August 14, 2015. technical field [0003] The present invention generally relates to improved methods and apparatus for performing direct material deposition. More specifically, the present invention relates to the use of laser scanners during direct material deposition to increase process speed and reduce energy consumption. Background technique [0004] Direct material deposition has proven to be a viable manufacturing process. Direct material deposition is a type of additive manufacturing that uses a laser to create a molten pool on a metal substrate, depositing powder or filaments in the molten pool that, when cooled, alters the geometry of the workpiece. Currently, large laser spot sizes close to the desired size of the melt pool are used. As the laser spot size increases, higher power consumption is required to provide the heat required to form t...

Claims

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Application Information

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IPC IPC(8): B23K26/06B23K31/12B23K26/34
CPCB23K26/0876B23K26/34B23K26/082B22F7/00B33Y10/00
Inventor B·杜塔
Owner DM3D TECH
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