Modular Build Chambers for Assembly-Line Additive Manufacturing
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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, making them costly and unmanageable for large-scale component production.
Innovation Solution
The implementation of simplified build modules with shared common components, utilizing a centralized powder supply and recovery system, and an assembly-line process to reduce powder usage and streamline the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional additive manufacturing systems use a large powder bed to enable mass production, then productivity increases, but the weight of the system increases and handling becomes cumbersome
Solution Approach 1:
The system is divided into multiple independent build modules that can be stacked vertically. Each module contains its own powder bed and build platform, allowing the system to achieve mass production capability through vertical stacking rather than using a single large powder bed. This segmentation reduces the weight of individual elevator systems while maintaining overall productivity.
Solution Approach 2:
The system transitions from a horizontal expansion approach (single large powder bed) to a vertical stacking approach (multiple small powder beds stacked vertically). This dimensional change allows multiple build modules to share common infrastructure while reducing individual component weights and improving handling.
2Productivity
If conventional systems use a large powder bed for mass production, then productivity improves, but device complexity increases due to seals and chamber pressure problems
Solution Approach 1:
Each build module is designed as an independent sealed chamber with its own pressure control system. This segmentation allows each module to be optimized individually and reduces the overall system complexity compared to managing a single large chamber with complex sealing requirements.
Solution Approach 2:
All build modules share common infrastructure including the frame structure, powder supply system, and control systems. This universal design reduces device complexity by eliminating the need for separate systems in each module while maintaining the benefits of multiple independent chambers.
3Productivity
If conventional systems use a large powder bed, then mass production is enabled, but powder handling becomes unmanageable and labor costs increase
Solution Approach 1:
The powder handling system is segmented into individual modules, each with its own powder bed and recovery system. This allows powder to be managed in smaller, more manageable quantities in each module rather than handling large amounts of powder in a single large bed.
Solution Approach 2:
Each build module includes an integrated powder recovery system that collects and recycles unused powder locally. This reduces waste and minimizes the need for manual powder handling and replacement, thereby reducing labor costs while maintaining mass production capability.
4Productivity
If multiple conventional machines are used in parallel for mass production, then productivity increases, but cost increases due to duplication of components and services
Solution Approach 1:
Multiple build modules are merged into a single integrated system that shares common infrastructure including the frame structure, powder supply system, cooling systems, and control electronics. This eliminates the duplication of components that would occur if separate machines were used in parallel, thereby reducing costs while maintaining mass production capability.
Solution Approach 2:
The system employs universal components and services that serve multiple build modules simultaneously. For example, a single cooling system provides cooling to multiple modules, and centralized control software manages all build modules, thereby eliminating duplication and reducing overall system cost.
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 waste, simplifies handling, and enables efficient mass production by allowing multiple modules to work in an assembly line, decreasing labor costs and improving operational efficiency.
Implementation Method 1
a laser operable to melt the metal powder and form three-dimensional parts
Implementation Method 2
an elevator system with an elevator operable to move the metal powder to and from the build module
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
An additive manufacturing apparatus includes: a build module (10, 100, 200) comprising a build chamber (18, 118, 150, 218), and a least one of but less than all of the following elements:(a) a directed energy source (72, 372); (b) a powder supply (14, 114, 314); (c) a powder recovery container (22, 122, 154, 222); and (d) a powder applicator (16, 116, 316); and a workstation (71, 71') comprising the remainder of elements (a)-(d) not included in the build module (10, 100, 200).