3D Deposition Powder Path Control for Uneven Surface Deposition
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Solution Overview
Problem
In three-dimensional deposition processes, uneven surfaces can cause metal powder material to scatter and attenuate the light beam output, leading to insufficient deposition and degraded quality of the three-dimensional object.
Innovation Solution
A three-dimensional deposition device with a powder supply unit, light irradiation unit, and interference information acquisition unit that adjusts the powder supply path and light beam output based on the object's shape to prevent interference and ensure proper deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If metal powder material is injected toward the focal point of the light beam, then deposition shaping can be performed, but the powder material interferes with convex parts on uneven working surfaces, causing scattering and light beam attenuation
Solution Approach 1:
The patent applies dynamics by making the powder supply path adjustable rather than fixed. The powder supply unit can change its injection trajectory dynamically based on the detected working surface shape, allowing the system to adapt to uneven surfaces and avoid interference with convex parts while maintaining effective deposition.
Solution Approach 2:
The patent implements feedback by using a shape measurement unit to detect the working surface topology and feed this information back to the control unit. The control unit then adjusts the powder supply path based on this feedback, creating a closed-loop control system that prevents powder scattering and light attenuation caused by surface interference.
2Quantity of substance
If powder material is supplied from multiple locations around the deposition head, then sufficient powder can reach the focal point, but part of the powder does not reach the focal point due to interference with the working surface
Solution Approach 1:
The patent applies local quality by directing powder material from different locations toward different target areas on the working surface. Instead of uniformly supplying powder from all locations, the system adjusts each powder supply path individually based on the local surface topology, ensuring that powder is delivered precisely where needed without interference.
3Use of energy by moving object
If the light beam output is maintained at constant level, then energy efficiency is improved, but the output is attenuated when powder scatters in the light beam path
Solution Approach 1:
The patent applies preliminary anti-action by proactively adjusting the powder supply path before the powder can interfere with the light beam. The shape measurement unit detects potential interference areas in advance, and the control unit preemptively modifies the powder injection trajectory to avoid these areas, preventing light beam attenuation before it occurs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device improves the quality of three-dimensional objects by preventing powder scattering and ensuring a consistent supply of powder material, even on uneven surfaces.
Implementation Method 1
a light irradiation unit configured to irradiate the powder material with a light beam to sinter or melt and solidify at least a part of the powder material irradiated with the light beam
Implementation Method 2
irradiate the powder material with a light beam to sinter or melt and solidify at least a part of the powder material
Implementation Method 3
irradiate the powder material with a light beam to sinter or melt and solidify at least a part of the powder material
Data Source
AI summary
In the three-dimensional deposition device and the three-dimensional deposition method, included are: a powder passage and a nozzle injection opening serving as a powder supply unit that supplies powder toward an object to be processed; a laser path serving as a light irradiation unit that irradiates the powder with a laser beam to sinter or melt and solidify at least a part of the powder irradiated with the laser beam to form a formed layer; an interference information acquisition unit that acquires interference information on the object to be processed with the powder injected from the nozzle injection opening based on the shape of the object to be processed; and a controller that changes the powder passage of the powder that the nozzle injection opening supplies to the object to be processed based on the interference information acquired by the interference information acquisition unit.