3D Printing Squeegee Speed Control for Flatness and Efficiency
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Solution Overview
Problem
Existing three-dimensional object shaping methods are inefficient due to uniform squeegee sliding speeds across all laminating regions, leading to unnecessary low speeds in areas outside prearranged sintering regions, which hinder the squeegeeing process.
Innovation Solution
Divide the shaping regions into inside and outside areas based on the maximum prearranged sintering region within each laminating unit, with the squeegee sliding speed in the outside region set higher than in the inside region to optimize the squeegeeing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If uniform squeegee sliding speed is applied across all laminating regions, then the inside region including prearranged sintering regions can maintain precise flatness, but the outside region without sintering regions operates at unnecessarily low speed reducing overall efficiency
Solution Approach 1:
The patent applies local quality by differentiating squeegee sliding speeds across different regions of the shaping table. The inside region containing prearranged sintering regions uses a first sliding speed optimized for precision, while the outside region without sintering regions uses a second sliding speed that is faster than the first speed. This regional differentiation allows each area to operate at the optimal speed for its specific function, maintaining precision where needed while improving overall productivity.
2Manufacturing precision
If the squeegee sliding speed is reduced in the inside region to ensure precise flatness, then manufacturing precision is improved, but the overall squeegeeing process becomes less efficient due to the limited area of the inside region
Solution Approach 1:
The patent segments the shaping table into two distinct regions: an inside region containing prearranged sintering regions and an outside region without sintering regions. Each region is assigned a different squeegee sliding speed - the first speed for the inside region and a faster second speed for the outside region. This segmentation allows the system to optimize for precision in the inside region while recovering time through faster processing in the outside region, thereby reducing overall squeegeeing time without compromising manufacturing precision.
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
This approach allows for efficient squeegeeing by maintaining precise flatness in the inside region while enabling faster, more efficient sliding in the outside region, thereby improving the overall efficiency of the squeegeeing process.
Implementation Method 1
a sintering step of irradiating the powder layer with a light beam or electron beam and moving the position of irradiation
Implementation Method 2
a sintering step of irradiating the powder layer with a light beam or electron beam and moving the position of irradiation
Implementation Method 3
a sintering step of irradiating the powder layer with a light beam or electron beam and moving the position of irradiation
Data Source
AI summary
A three-dimensional object shaping method includes the steps of a powder layer forming step, a sliding step of a squeegee on the supplied powder, and a sintering step of irradiating the powder layer, all successively repeated, wherein after dividing shaping regions into a plurality of laminating units, each laminating unit of the plurality of laminating units is divided into an inside region including a maximum prearranged sintering region, and an outside region not including the maximum prearranged sintering region, and wherein the squeegee sliding speed in the outside region is set to be greater than the sliding speed in the inside region.