Robotic Plasma Cutting Path Planning With Dynamic Cut Chart Selection
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Solution Overview
Problem
Current methods for planning processing paths in three-dimensional environments for robotic plasma arc cutting systems are inefficient and prone to errors due to the manual selection of consumables and parameter settings, which complicates the design process and impacts system efficiency and cut results.
Innovation Solution
A computer-implemented method that automatically determines a processing path by receiving CAD data and user parameters, dynamically filters a library of cut charts, and generates a path considering plasma arc dynamics and robotic capabilities, selecting suitable consumables and their settings to optimize the cutting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual selection of consumables and parameter settings is used for path planning, then flexibility in adjusting design choices is improved, but time consumption and error rate increase significantly
Solution Approach 1:
The system enables automated self-service through the path planning module that automatically selects consumables, determines parameter settings, and generates processing paths without manual intervention. The module autonomously manages the entire workflow from CAD data import to G-code generation, eliminating the need for operators to manually adjust each parameter while maintaining design flexibility through configurable constraints and preferences.
Solution Approach 2:
The patent replaces the manual mechanical process of parameter adjustment and consumable selection with an automated computational system. The path planning module uses algorithms to automatically determine optimal parameters, substitute manual decision-making with computer-based optimization, and replace physical manual operations with automated software-driven path generation and system configuration.
2Adaptability or versatility
If manual management of consumables library is performed, then customization of processing parameters is improved, but complexity and error-proneness of the process increase
Solution Approach 1:
The path planning module serves as an intermediary between the operator and the complex consumables library. It automatically manages the library of consumables and parameter settings, translating high-level processing requirements into specific consumable selections and parameter configurations. This intermediary layer shields users from the underlying complexity while maintaining full customization capabilities through configurable parameters and constraints.
Solution Approach 2:
The system implements a universal path planning module that handles multiple functions including consumable selection, parameter optimization, collision detection, and path generation within a single integrated system. This multi-functional approach consolidates what would otherwise require multiple separate tools and manual processes, reducing overall system complexity while maintaining versatility across different processing scenarios.
3Productivity
If automated path planning is implemented, then processing efficiency is improved, but plasma arc dynamics compensation becomes more challenging
Solution Approach 1:
The system performs preliminary compensation for plasma arc dynamics during the path planning stage rather than requiring real-time adjustments during execution. The path planning module pre-calculates compensation values for arc wander, heat input effects, and other plasma-specific phenomena, embedding these corrections directly into the generated processing path. This preliminary action approach maintains high processing efficiency while managing the complexity of plasma arc dynamics through advance preparation.
4Manufacturing precision
If multiple cuts with different parameters are required for complex parts, then processing precision is improved, but management burden increases
Solution Approach 1:
The path planning module automatically segments complex parts into multiple cutting operations when required, dividing the overall processing task into discrete passes with optimized parameters for each. It intelligently identifies when multiple cuts are necessary based on part geometry, material thickness, and tool capabilities, then automatically generates the sequence of operations with appropriate parameter changes for each segment, eliminating the need for manual management of multiple cutting passes.
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 method enhances efficiency and accuracy in processing three-dimensional workpieces by automating consumable selection and path planning, ensuring precise and optimized cuts while minimizing errors and collisions.
Implementation Method 1
a plasma arc cutting system coupled to a robotic arm
Implementation Method 2
plasma arc cutting system
Data Source
AI summary
The present invention features a computer-implemented method of planning a processing path relative to a three-dimensional workpiece for a plasma arc cutting system coupled to a robotic arm. The method includes receiving input data from a user comprising (i) Computer-Aided Design (CAD) data for specifying a desired part to be processed from the three-dimensional workpiece, and (ii) one or more desired parameters for operating the plasma arc cutting system. A plurality of features of the desired part to be formed on the three-dimensional workpiece are identified based on the CAD data. The method also includes dynamically filtering a library of cut charts based on the plurality of features and the desired operating parameters to determine a recommended cut chart for processing the plurality of features. The method further includes generating the processing path based on the recommended cut chart and the plurality of features to be formed.