Modular Additive Manufacturing Layout for Low-Powder Mass Production
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Solution Overview
Problem
Current additive manufacturing systems are inefficient for mass production due to high powder usage, cumbersome handling, and excessive manual interaction, leading to increased costs and complexity in large-scale component production.
Innovation Solution
The implementation of simplified build modules with shared common components and a centralized workstation for additive manufacturing, utilizing a directed energy source, powder supply, powder recovery container, and applicator, allowing for efficient layer-by-layer construction of parts in an assembly-line process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional additive manufacturing systems use a large powder bed to enable mass production, then production capacity increases, but powder cost and system complexity increase significantly
Solution Approach 1:
The system divides the build process into discrete layers, applying powder only to the specific layer being built rather than maintaining a large powder bed. This segmentation of the building process allows precise control over powder application, reducing overall powder consumption while maintaining production capacity.
Solution Approach 2:
The system applies only the necessary amount of powder for each layer rather than providing excess powder in a large bed. By applying powder partially and only where needed for the current layer being built, the system reduces powder waste while maintaining the ability to produce multiple parts.
2Duration of action of moving object
If conventional systems store unused powder in the powder bed for future layers, then build continuity is maintained, but weight and handling complexity increase
Solution Approach 1:
The system extracts the unused powder from the build area and stores it separately in a powder reservoir. This separation removes the weight burden from the elevator and build chamber systems while maintaining the ability to replenish powder layers as needed, preserving build continuity without the penalty of carrying excess powder weight.
3Productivity
If multiple machines are duplicated in parallel for mass production, then output increases, but system complexity and cost increase
Solution Approach 1:
The system designs a single additive manufacturing machine with multi-functional capabilities that can produce multiple different parts through software control and reconfigurable build parameters. This universal machine can be programmed to manufacture various components, eliminating the need for duplicating multiple specialized machines while maintaining mass production output.
Solution Approach 2:
The system employs dynamic reconfiguration capabilities where the build parameters, toolpaths, and process conditions can be changed between builds to produce different parts. This dynamic adaptability allows one machine to function as multiple machines would, achieving mass production versatility without physical duplication.
4Adaptability or versatility
If conventional systems require manual handling for part retrieval and powder management, then flexibility is maintained, but labor costs and operation time increase
Solution Approach 1:
The system incorporates automated powder delivery mechanisms that retrieve and deposit powder layers without manual intervention. The powder is automatically fed from the reservoir to the build area, and spent powder is automatically removed, eliminating manual handling while maintaining operational flexibility through programmable control.
Solution Approach 2:
The system replaces manual mechanical handling with automated mechanisms including robotic powder delivery, automated layer deposition, and programmed build sequences. This substitution of manual operations with automated systems reduces labor requirements while maintaining the flexibility to produce different part configurations through software control.
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 reduces powder usage, simplifies handling, and decreases labor costs by enabling efficient production of multiple parts in a controlled environment, making it suitable for mass production without the need for duplicate machines and extensive manual handling.
Implementation Method 1
a directed energy source; (b) a powder supply; (c) a powder recovery container; and (d) a powder applicator
Implementation Method 2
Selective Laser Sintering (SLS), 3D printing, such as by inkjets and laserjets
Data Source
AI summary
An additive manufacturing apparatus includes: a build module comprising a build chamber, and a least one of but less than all of the following elements: (a) a directed energy source; (b) a powder supply; (c) a powder recovery container; and (d) a powder applicator; and a workstation comprising the remainder of elements (a)-(d) not included in the build module.