3D Powder Deposition with Selective Heating for Layer Accuracy
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Solution Overview
Problem
Current three-dimensional deposition technologies face challenges in achieving high accuracy in manufacturing three-dimensional objects through deposition shaping.
Innovation Solution
A three-dimensional deposition device and method that includes a powder supply unit, a light irradiation unit for sintering or melting the powder, a heating unit for selectively heating areas, and a control device to manage these components, allowing precise control over the deposition process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional deposition shaping is used to manufacture three-dimensional objects, then the manufacturing process is relatively simple, but the manufacturing precision and accuracy are insufficient
Solution Approach 1:
The device is divided into functionally independent modules: powder supply unit with multiple nozzles, light irradiation unit for selective sintering, and heating unit for post-processing. Each module operates independently to achieve precise control over the deposition process, resolving the contradiction between manufacturing precision and device complexity through functional segmentation.
Solution Approach 2:
The heating unit selectively heats specific areas of the formed layer or base unit based on their thermal state after light irradiation. Areas that received light irradiation are heated differently from areas that did not, enabling localized quality control and high-precision manufacturing by applying different thermal treatments to different regions of the workpiece.
2Manufacturing precision
If powder material is irradiated with light beam for sintering or melting, then formed layer is created, but selective heating control is needed to improve precision
Solution Approach 1:
The control device monitors the thermal state of the formed layer and base unit, and adjusts the heating unit's operation accordingly. The system determines whether to heat areas that received light irradiation based on their thermal characteristics, creating a closed-loop feedback control system that improves formed layer precision while managing operation complexity through automated decision-making.
Solution Approach 2:
The heating unit is prepared and positioned in advance to selectively heat areas after light irradiation. The control device pre-determines which areas require heating based on the light irradiation pattern, enabling precise control over the thermal processing sequence and improving formed layer precision through planned, sequential operations.
3Manufacturing precision
If heating unit selectively heats irradiated areas, then manufacturing accuracy improves, but process time increases
Solution Approach 1:
The deposition process alternates between light irradiation cycles and selective heating cycles. The heating unit operates periodically on areas that received light irradiation, rather than continuously heating the entire workpiece. This periodic action maintains manufacturing accuracy by providing necessary thermal treatment while reducing overall process time through efficient use of heating only when and where needed.
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
Enables the manufacture of three-dimensional objects with high accuracy by selectively heating areas that have been irradiated or not, improving the precision and quality of the formed layers.
Implementation Method 1
a light irradiation unit that irradiates the powder material with a light beam so that at least a part of the powder material irradiated with the light beam is sintered or melted
Implementation Method 2
at least a part of the powder material irradiated with the light beam is sintered or melted
Implementation Method 3
at least a part of the powder material irradiated with the light beam is sintered or melted
Implementation Method 4
a heating unit that selectively heats an area having passed through a position irradiated with the light beam in the base unit or the formed layer or an area not having passed through the position irradiated with the light beam
Data Source
AI summary
A three-dimensional deposition device and a three-dimensional deposition method used to highly accurately manufacture a three-dimensional object are provided. A three-dimensional deposition device for forming a three-dimensional shape by depositing a formed layer on a base unit includes: a powder supply unit which supplies a powder material; a light irradiation unit which irradiates the powder material with a light beam so that at least a part of the powder material irradiated with the light beam is sintered or melted and solidified to form the formed layer; a heating unit which selectively heats an area having passed through a position irradiated with the light beam in the base unit or the formed layer or an area not having passed through the position irradiated with the light beam; and a control device which controls operations of the powder supply unit, the light irradiation unit, and the heating unit.