Mechanical Oscillation Welding for Low-Heat Dissimilar Metal Joining
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Solution Overview
Problem
Current metal manufacturing processes for joining components with different materials are complex and expensive, particularly when using fasteners or three-dimensional welding, which can add weight and complicate the joining process.
Innovation Solution
A system that includes a welding tool with a mechanical oscillation system to oscillate a structural component towards and away from the workpiece, controlled by feedback from sensors to manage the welding process, allowing for precise control of the welding wire feed speed and arc establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fasteners or complementary geometries are used to join different materials, then the components can be joined together, but additional components or weight are added to the joint
Solution Approach 1:
The patent merges the joining function and structural support function into a single welded joint, eliminating the need for separate fasteners or complementary geometry components. The welding process directly fuses the base metal to the reinforcement geometry, creating an integrated structure that provides both joining and structural functions without additional components.
2Manufacturing precision
If three dimensional welding and additive manufacturing are used to create durable components, then precise and controlled manufacturing is achieved, but the process becomes complicated and expensive
Solution Approach 1:
The patent segments the manufacturing process into distinct phases: first creating a precise base metal component, then adding reinforcement geometry through controlled welding passes. This segmentation allows each phase to be optimized independently - the base metal is precisely formed, and the reinforcement is added through systematic welding layers, reducing overall process complexity compared to attempting complex 3D printing of the entire component.
Solution Approach 2:
The patent performs preliminary preparation by creating the base metal component with precise geometry and surface preparation before applying the welding reinforcement. This preliminary action ensures that the subsequent welding process can focus solely on adding structural reinforcement, simplifying the overall process by separating component formation from reinforcement addition.
3Ease of manufacture
If conventional welding processes are used to join metals, then the joining process is simplified, but heat affected zones are enlarged and distortion increases
Solution Approach 1:
The patent employs periodic, oscillating motion of the welding electrode during the welding process. This oscillation periodically moves the heat source away from and toward the workpiece, allowing heat to dissipate and preventing excessive concentration in one location. The result is reduced heat affected zones and minimized distortion while maintaining effective welding, combining the simplicity of conventional welding with controlled heat management.
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 simplifies the manufacturing process, reduces costs, and enables efficient joining of components with different materials by controlling the welding process to minimize weight addition and heat affected zones, resulting in durable and precise metal components.
Implementation Method 1
a mechanical oscillation system configured to mechanically oscillate a structural component toward and away from the workpiece
Implementation Method 2
an arc between the welding wire and the workpiece
Data Source
AI summary
An example system includes an additive manufacturing tool configured to receive a wire from a wire feeder, to receive current from a power source, and to supply the wire to a workpiece during an additive manufacturing process, and a mechanical oscillation system configured to mechanically oscillate a structural component toward and away from the workpiece, wherein the structural component is external to the wire feeder and the power source.