3D-Printed Weld Gun Arms for Faster, Lighter Pinch Welding
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Solution Overview
Problem
Current welding gun arms, typically made through casting or machining, have long lead times and are heavy, requiring large actuators, which can render assembly lines inoperative and necessitate stockpiling replacement parts.
Innovation Solution
The use of 3-dimensional printed structures for weld gun arms, which can be rapidly produced, are lighter, and require smaller actuators, incorporating grooves or passageways for cable support and made from insulative or conductive composite materials like carbon fiber or glass fiber impregnated copper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If arms are made through casting or machining processes, then structural strength and durability are ensured, but manufacturing lead time increases to many weeks
Solution Approach 1:
The patent changes the manufacturing method from traditional casting/machining to 3D printing, fundamentally altering the production parameters. This enables rapid prototyping and manufacturing while maintaining structural integrity through optimized lattice designs and material selection, reducing lead time from weeks to days or hours.
Solution Approach 2:
The patent employs composite materials in the 3D printed arms, combining different materials to achieve both strength and weight reduction. This allows the arms to maintain structural durability required for welding applications while enabling faster manufacturing cycles compared to traditional monolithic metal casting.
2Reliability
If arms are made through casting or machining processes, then structural integrity is achieved, but arm weight increases requiring large actuators
Solution Approach 1:
The patent segments the arm structure into lattice frameworks and modular components rather than using solid monolithic structures. This segmentation maintains structural integrity through distributed load paths while dramatically reducing overall weight, allowing smaller actuators to be used.
Solution Approach 2:
The patent utilizes porous or lattice structures within the arm components, creating internal voids that reduce weight while maintaining external structural integrity. These porous configurations provide sufficient strength for welding applications without the excessive weight of solid cast or machined arms.
3Adaptability or versatility
If custom arms are made for each application through casting or machining, then application-specific performance is optimized, but manufacturing complexity and time increase
Solution Approach 1:
The patent leverages 3D printing technology to easily change design parameters and geometries for different applications. Digital models can be rapidly modified and printed, allowing customization for specific welding applications without the complex tooling and setup required for traditional casting or machining processes.
Solution Approach 2:
The patent creates digital 3D models and simulations beforehand to optimize arm designs for specific applications. This preliminary digital design phase allows for application-specific performance optimization without the time-consuming trial and error of traditional manufacturing methods.
Data Source
AI summary
A weld gun having a weld arm including a 3-dimensional printed structure supporting a welding electrode. The 3-dimensional printed structure can be rapidly produced and provides the structural support for the at least one electrode. The weld arm can be manufactured quickly and are generally lighter than forged/machined arms and can be used with relatively smaller actuators than a comparable forged/machined arm.