Floating Core Tube Cable Connection for Robotic Welding Articulation
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Solution Overview
Problem
Conventional electric welding torch cables experience mechanical and electrical failures due to stress caused by fixed connections, especially in robotic applications where the cables are bent to extreme angles, leading to reduced cable life and increased risk of failure.
Innovation Solution
A welding cable connection assembly featuring a connector with an interior cavity to receive a floating core tube, allowing the core tube to 'float' within the connector, reducing bending stress and incorporating a fastener to secure the cable position, thereby enabling rotation and articulation of the welding torch while maintaining reliable electrical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed connections are used for the cable, then the cable structure is simple and easy to manufacture, but the cable experiences stress and mechanical wear leading to failure
Solution Approach 1:
The core tube is designed to float freely within the connector rather than being fixed, allowing it to move dynamically with cable bending and articulation. This dynamic configuration reduces stress concentration at fixed connection points while maintaining structural integrity, thereby improving reliability without significantly complicating manufacturing.
2Adaptability or versatility
If the cable is bent to extreme angles for robotic welding, then the torch can reach various locations, but the cable experiences severe mechanical wear and failure
Solution Approach 1:
The floating core tube allows the cable to articulate dynamically through extreme angles without fixed connection points that would create stress concentrations. The core tube moves freely within the connector, accommodating bending and rotation while distributing mechanical stresses along the cable length, thereby maintaining durability during robotic welding operations.
Solution Approach 2:
The design changes the physical state of the core tube from fixed to floating, allowing it to change position dynamically. This parameter change enables the cable to accommodate extreme articulation angles while maintaining structural integrity and reducing mechanical wear.
3Stability of the object's composition
If the core tube is fixed in the connector, then the connection is stable, but the cable cannot accommodate movement and rotation
Solution Approach 1:
The core tube transitions from a fixed static configuration to a floating dynamic configuration. This allows the connection to maintain stability through the fastener securing the cable outer sheath, while the floating core tube accommodates movement and rotation by moving freely within the connector cavity, thereby providing both stability and flexibility.
4Duration of action of stationary object
If a floating core tube design is used, then stress is reduced and cable life is extended, but the connection structure becomes more complex
Solution Approach 1:
The floating core tube design extends cable life by eliminating stress concentrations at fixed connection points. The implementation uses a simple connector cavity and fastener arrangement that allows the core tube to float freely, adding minimal structural complexity while significantly improving cable durability and reducing failure risk.
Data Source
AI summary
A welding cable connection assembly for an electric welding torch is provided. For example, the welding cable connection assembly includes a connector having an interior cavity to receive a portion of a floating core tube of a welding cable. A fastener is arranged about an outer circumference of the welding cable to fix a position or arrangement of the welding cable relative to the connector.