Multi-Channel FSAM Spindle for Stable Multi-Wire Deposition
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Solution Overview
Problem
Existing wire-feed friction stir additive manufacturing (FSAM) systems are limited to a single material or size due to the use of a single channel, restricting material deposition versatility.
Innovation Solution
A spindle with multiple channels and a feeding system that allows simultaneous feeding of multiple wires of varying sizes and types, using sleeves and guides to stabilize and guide the wires, enabling seamless transitions between materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single channel is used in the spindle, then the system structure is simple, but the material deposition versatility is limited to a single material or size
Solution Approach 1:
The spindle is segmented into multiple independent channels, each capable of receiving and processing different wire materials simultaneously. This segmentation allows the system to handle multiple material types and sizes through a single spindle assembly, resolving the contradiction between versatility and structural simplicity.
Solution Approach 2:
The multi-channel spindle design creates a universal system where each channel can accommodate different wire materials and diameters. The standardized channel structure with universal fitting interfaces enables the same spindle to perform multiple material deposition functions, achieving adaptability without proportionally increasing overall system complexity.
2Productivity
If multiple wires are fed simultaneously through the spindle, then productivity increases, but wire buckling and tangling problems worsen
Solution Approach 1:
The feeding system is segmented into individual feeding mechanisms for each wire, with separate feeders and independent guiding paths. This segmentation prevents wires from interfering with each other, eliminating buckling and tangling while allowing simultaneous feeding of multiple wires at high speeds, thus maintaining both productivity and reliability.
Solution Approach 2:
Guide channels and alignment features act as intermediaries between the wire feeders and the spindle channels. These intermediary structures ensure proper wire positioning and alignment throughout the feeding process, preventing wire instability issues while enabling high-speed multi-wire feeding operations.
3Productivity
If the feeding system is stationary, then the system structure is simple, but wire feeding efficiency and material softening quality deteriorate
Solution Approach 1:
The feeding system is merged with the rotating spindle assembly, where the feeders and guide channels rotate together with the spindle. This combining of rotational motion eliminates the need for complex separate feeding mechanisms, improving wire feeding efficiency and material softening quality while avoiding excessive structural complexity through integrated design.
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
Enables the construction of large metallic structures with multiple materials, reduces energy consumption, and supports a wide range of operations by adjusting wire feed rates, while maintaining system compactness and preventing wire buckling and tangling.
Implementation Method 1
wire-feed friction stir additive manufacturing (FSAM) systems... Material is received in a receiving end of the single channel and softened within the single channel as it travels to a deposition end
Implementation Method 2
The plurality of wires are configured to soften as they are fed through the plurality of sleeves and the spindle rotates
Data Source
AI summary
A friction stir additive manufacturing system is provided. In one aspect, the system includes a spindle configured to rotate about a central axis. The spindle includes a plurality of spindle channels extending from a first end of the spindle to a second end of the spindle. The system also includes a plurality of sleeves, each of the sleeves configured to be received within a corresponding spindle channel. Each of the sleeves includes a hollow interior. The system also includes a plurality of wires. The system also includes a feeding system configured to feed each of the plurality of wires through a respective sleeve or the plurality of sleeves as the spindle rotates. The plurality of wires are configured to soften as they are fed through the plurality of sleeves and the spindle rotates.