3D Shaping Device Stage Recessed Portion Material Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing three-dimensional shaping techniques face challenges in maintaining dimensional accuracy due to uneven material distribution on stages with fine pores, leading to warpage and reduced accuracy of shaped objects.
Innovation Solution
A method involving a three-dimensional shaping device that differentiates between two regions on the stage, adjusting the supply amount of molten material based on region type, with a higher supply amount to areas over recessed portions to ensure uniform deposition and reduce warpage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If molten material is discharged onto a stage with fine pores to reduce warpage, then adhesion is improved and warpage is reduced, but unevenness is generated and dimensional accuracy deteriorates
Solution Approach 1:
The patent applies local quality by differentiating the stage surface into multiple regions with different properties. Specifically, the stage includes both fine-pore regions (for adhesion) and smooth regions (for precision). The molten material is selectively discharged onto different regions based on the required quality: fine pores are used where strong adhesion is needed, while smooth surfaces are used where dimensional accuracy is critical. This spatial differentiation of surface properties resolves the contradiction between adhesion and dimensional accuracy.
2Strength
If molten material enters fine pores to improve adhesion, then peeling is reduced, but line width becomes uneven and manufacturing precision deteriorates
Solution Approach 1:
The patent segments the stage surface into distinct functional zones: fine-pore regions for adhesion enhancement and smooth regions for precision material deposition. By dividing the stage into these separate regions, the system can discharge molten material onto smooth surfaces when uniform line width is required, while utilizing fine-pore regions only where adhesion is the primary concern. This segmentation eliminates the interference between pore absorption and line width control.
3Ease of manufacture
If uniform supply amount is used across the stage, then discharge control is simplified, but unevenness occurs over recessed portions and manufacturing precision deteriorates
Solution Approach 1:
The patent implements local quality by varying the discharge amount of molten material based on the specific region of the stage. The control system adjusts the supply amount to account for the recessed portions and different surface properties at various locations. This ensures that even though the stage has non-uniform features (fine pores, recesses), the material is deposited with appropriate local quantities to maintain surface uniformity and dimensional accuracy across the entire built object.
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 enhances the dimensional accuracy of shaped objects by minimizing unevenness and warpage, improving the manufacturing process by controlling material distribution effectively.
Implementation Method 1
a first layer LY1 is formed in contact with a stage 300 provided with a recessed portion 315
Data Source
AI summary
A method for manufacturing a three-dimensional shaped object includes: a first shaping step of forming a first layer in contact with a stage provided with a recessed portion by changing a relative position between a discharge unit and the stage while discharging a molten material from the discharge unit toward the stage; and a second shaping step of stacking one or more layers on the first layer by changing the relative position between the discharge unit and the stage while discharging the molten material from the discharge unit toward the first layer. The stage has a first region including a region on the recessed portion and a second region different from the first region, and in the first shaping step, the first layer is formed by making a first supply amount which is a supply amount of the molten material supplied from the discharge unit to the first region per unit area larger than a second supply amount which is a supply amount of the molten material supplied from the discharge unit to the second region per unit area.