Mobile Plasma Arc Torch Control for Long-Range Cutting
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Solution Overview
Problem
Conventional plasma arc cutting systems are limited by the length of lead lines connecting them to power supplies, restricting the ability to perform continuous cuts or gouges beyond a certain distance from the stationary power source.
Innovation Solution
An autonomous motion device that supports a plasma arc processing system, including a power supply and torch, which can move relative to a workpiece, allowing for continuous operation without the constraint of lead line length, equipped with sensors for monitoring and feedback control, and an omnidirectional robotic drive system for precise manipulation along multiple axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If plasma arc torches are coupled to stationary power supplies by lead lines, then the system structure is simple and stable, but the processing distance is limited by lead line length
Solution Approach 1:
The patent transforms the stationary power supply system into a mobile one by integrating the power supply onto an autonomous motion device with robotic drive systems. This allows the plasma processing system to move freely along the workpiece, eliminating the fixed lead line connection constraint and enabling processing at any position on the workpiece surface.
Solution Approach 2:
The patent extracts the power supply from its traditional stationary location and relocates it to the mobile robotic platform. This separation allows the system to operate independently without being tethered to a fixed power source by lengthy lead lines, thereby extending the effective processing range.
2Length of stationary object
If lead lines are made longer to extend processing range, then the processing distance increases, but the system becomes more complex and harder to manage
Solution Approach 1:
The patent completely eliminates the lead line component by integrating the power supply directly onto the mobile robotic platform. This removal of the lead line simplifies the system architecture, reduces management complexity, and eliminates constraints related to lead line length and handling.
3Adaptability or versatility
If the power supply is made portable and integrated with the torch, then the processing accessibility improves, but the device complexity increases
Solution Approach 1:
The patent merges the power supply, plasma torch, and robotic drive systems into a single integrated mobile platform. This consolidation enables the system to access hard-to-reach areas of the workpiece while maintaining all necessary functions in one cohesive unit, improving versatility without requiring multiple separate components.
Solution Approach 2:
The mobile robotic platform serves multiple functions: it provides locomotion along the workpiece, positions the plasma torch, houses the power supply, and incorporates sensors for monitoring. This multi-functionality reduces the need for separate stationary components and enhances processing accessibility across diverse workpiece geometries.
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 continuous plasma processing operations over long lengths, improved accessibility to hard-to-reach areas, and enhanced performance in remote automated gouging and cutting, integrating system components for a mobile and easy-to-manage solution.
Implementation Method 1
A plasma arc torch produces a plasma arc, which is a constricted jet of mostly ionized gas with high temperature
Implementation Method 2
a plasma arc, which is a constricted jet of mostly ionized gas with high temperature and that can have sufficient momentum to assist with removal of molten metal
Data Source
AI summary
In some aspects, autonomous motion devices configured to operably connect to a plasma torch of a plasma cutting system can include: a body to support a power supply of the plasma cutting system and move relative to a workpiece; a torch holder connected to the body and configured to position a plasma arc torch tip of the plasma torch relative to a region of the workpiece to be processed; a drive system to translate the body supporting the power supply and torch autonomously relative to a surface of the workpiece during a plasma processing operation; and a processor in communication with the drive system and configured to communicate with the power supply, the processor being configured to control the translation of the body relative to the workpiece in accordance with the plasma processing operation.