Powder Bed 3D Printing With Cut Perimeters for Layer Precision
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Solution Overview
Problem
Current three-dimensional printing technologies face challenges in efficiently forming complex objects with precise control over layer thickness and perimeter generation, particularly in achieving high resolution and accuracy.
Innovation Solution
The method involves providing a powder bed and alternately applying a binding substance and directing an energy beam to specific areas of the powder material, according to a model design, while generating perimeters using cutters to achieve precise layer formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional layer-by-layer 3D printing methods are used, then three-dimensional objects can be formed, but the manufacturing precision and resolution are insufficient for complex objects
Solution Approach 1:
The patent divides the object formation process into two independent parallel processes: (1) layer formation by depositing powder material and applying binding substance, and (2) perimeter generation by cutting. This segmentation allows each process to be optimized independently, with layer thickness controlled by deposition parameters and perimeter precision achieved through cutting, thereby improving overall manufacturing precision without sacrificing productivity
Solution Approach 2:
The patent performs preliminary layer formation by depositing powder material and applying binding substance to create a green body layer before generating perimeters. This preliminary action establishes the base structure with controlled thickness, and subsequent perimeter cutting refines the shape precision, enabling both fast layer formation and high precision edges
2Manufacturing precision
If traditional 3D printing methods are used, then objects can be formed, but perimeter generation and layer thickness control are not sufficiently precise
Solution Approach 1:
The patent merges two previously separate processes (layer formation and perimeter generation) into a single integrated 3D printing system that alternates between depositing layers and cutting perimeters. This combination maintains the precision benefits of both processes while automating the coordination through control systems, reducing operational complexity despite adding a cutting function
3Reliability
If binding substance is applied to entire layers, then layer binding is achieved, but unbounded powder material cannot be removed efficiently
Solution Approach 1:
The patent applies binding substance locally only to specific areas where perimeter cutting will occur, rather than entire layers. This localized application creates strong binding at the perimeter regions where it is most needed for structural integrity, while leaving other areas unbonded for easy powder removal, thus achieving both reliable binding and ease of manufacture
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 enables the rapid and precise formation of three-dimensional objects with controlled layer thickness and perimeter generation, enhancing the accuracy and resolution of the printed objects.
Implementation Method 1
applying a first binding substance to a first area of a first layer of powder material of the powder bed
Implementation Method 2
heating a first subsection of the first area
Implementation Method 3
a first curing of the three-dimensional object at a temperature of at least 70° C. for at least 10 minutes
Implementation Method 4
using a first cutter to generate one or more perimeters of the first layer
Data Source
AI summary
The present disclosure provides systems and methods for the formation of three-dimensional objects. A method for forming a three-dimensional object may comprise alternately and sequentially applying a stream comprising a binding substance to an area of a layer of powder material in a powder bed, and generating at least one perimeter of the three-dimensional object in the area. The stream may be applied in accordance with a model design of the three-dimensional object. The at least one perimeter may generated in accordance with the model design.