Build Unit Gasflow Orientation for Additive Manufacturing Paths
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Solution Overview
Problem
Current additive manufacturing techniques face limitations in controlling airflow orientation relative to solidification lines, which restricts microstructure control and increases build time due to fixed gas flow directions.
Innovation Solution
An additive manufacturing device with a positioning mechanism for independent movement of build units in multiple dimensions, incorporating a gas flow device that can adjust its direction relative to solidification lines, allowing for varied gas flow orientations during the formation of each layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If gas flow direction is fixed in conventional additive manufacturing, then device complexity is reduced, but manufacturing precision of microstructure deteriorates
Solution Approach 1:
The gas flow device is made dynamically adjustable in orientation relative to the build unit, allowing the gas flow direction to be changed during the additive manufacturing process. This enables precise control of gas flow with respect to solidification lines at different angles, thereby improving microstructure control without requiring a completely fixed complex system
Solution Approach 2:
The gas flow device is designed to perform multiple functions: it can provide gas flow at various orientations (0° to 360°) relative to the build unit, accommodate different scanning strategies, and control microstructure formation. This multi-functionality reduces the need for multiple separate devices while achieving precise microstructure control
2Productivity
If gas flow direction is fixed relative to build unit, then device complexity is reduced, but build time increases due to limited scanning strategy options
Solution Approach 1:
The gas flow device incorporates dynamic positioning capabilities that allow real-time adjustment of gas flow orientation during the manufacturing process. This enables the system to adapt to different scanning strategies and layer orientations, improving build efficiency and reducing build time without requiring excessive device complexity
Solution Approach 2:
The system adds orientational freedom in the angular dimension, allowing gas flow to be directed at various angles (0° to 360°) relative to the build unit. This dimensional addition enables more flexible scanning strategies and improves productivity without proportionally increasing device complexity
3Manufacturing precision
If gas flow is not controlled relative to solidification lines, then device complexity is reduced, but manufacturing precision of component deteriorates
Solution Approach 1:
The control system monitors the orientation of solidification lines and adjusts the gas flow device orientation accordingly to maintain optimal gas flow alignment. This feedback mechanism ensures precise component quality by continuously adapting gas flow direction to match the current scanning strategy and solidification pattern
Solution Approach 2:
The gas flow device is designed with dynamic adjustment capabilities that allow real-time reorientation based on the scanning strategy and solidification line orientation. This dynamic control ensures optimal gas flow alignment throughout the manufacturing process, improving component quality without requiring overly complex static systems
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 precise control of gas flow with respect to solidification lines, enhancing microstructure control and reducing build time by allowing for more flexible and efficient orientation of gas flow zones, thereby improving the quality and speed of the additive manufacturing process.
Implementation Method 1
a laser or an energy source to generate heat in the powder to at least partially melt the material
Implementation Method 2
The physical processes associated with laser sintering or laser melting include heat transfer to a powder material
Implementation Method 3
a gas flow device for providing a flow zone along a first direction with relation to the build unit
Data Source
AI summary
A method, apparatus, and program for additive manufacturing. The additive manufacturing device includes a positioning mechanism configured to provide independent movement of at least one build unit in at least two dimensions. The build unit may further include a gasflow device for providing a flow zone along a first direction with relation to the build unit. The build unit may further include a powder delivery mechanism and an irradiation beam directing unit. The irradiation bean unit may follow a first irradiation path, wherein the first irradiation path forms at least a first solidification line and at least a second solidification line formed at an angle other than 0° and 180° with respect to the first solidification line. During the formation of the first solidification line, the build unit may be positioned in a first orientation such that the first direction of the flow zone is substantially perpendicular to the first solidification line. During the formation of the second solidification line, the build unit may be positioned in a second orientation such that the flow zone along the first direction is substantially perpendicular to the second solidification line.