Beam Cutting Path Planning to Prevent Part Tilting
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Solution Overview
Problem
In industrial beam cutting devices, particularly laser cutting devices, workpiece parts tend to tilt after being cut, leading to production scrap and damage to the cutting head, as existing solutions either require manual intervention, extended processing times, or insufficient prevention of tilting.
Innovation Solution
A method for controlling a beam cutting device that involves determining the relative position and orientation of the workpiece and cutting plan with respect to the support points, identifying risk regions for tilting, and selecting optimal starting-cut or cut-away points to prevent tilting, using a combination of sensor systems and geometric calculations to define precise movement commands for the cutting tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cutting head is repositioned vertically or horizontally to avoid collision with tilted workpiece parts, then damage to the cutting head is reduced, but the cutting process duration is extended and productivity decreases
Solution Approach 1:
The invention calculates and determines risk regions and suitable starting-cut or cut-away points before the cutting process begins. By analyzing the workpiece geometry, support point positions, and cutting plan in advance, the system identifies regions where tilting is likely to occur and selects optimal cutting paths that avoid these regions, thereby preventing tilting before it can happen during the actual cutting process.
Solution Approach 2:
The cutting contour is divided into multiple regions based on tilting risk assessment. The system segments the workpiece into risk regions (where tilting is likely) and safe regions, and plans the cutting path to traverse through safe regions first or avoid risk regions entirely by selecting appropriate starting points and cut-away points, thus preventing tilting without requiring mid-process repositioning.
2Reliability
If sensor systems are used to detect collisions and change positioning paths, then damage to the cutting head is reduced, but manual intervention is required and the system complexity increases
Solution Approach 1:
The invention performs preliminary calculation of risk regions and optimal cutting paths before the cutting process begins. By using the known workpiece geometry, support point positions, and cutting plan, the system determines safe starting-cut points and cut-away points in advance, eliminating the need for sensor-based collision detection and manual intervention during the cutting process.
Solution Approach 2:
The control system automatically calculates risk regions and determines optimal cutting paths without requiring manual intervention. The system uses its own data about the workpiece geometry, support points, and cutting plan to self-determine the safest cutting approach, making the system autonomous and eliminating the need for external sensor systems or operator involvement.
3Reliability
If the cutting head is repositioned multiple times to avoid tilted workpiece parts, then collision damage is prevented, but the positioning path is extended and manufacturing time increases
Solution Approach 1:
The invention determines suitable starting-cut points and cut-away points before the cutting process begins by analyzing the workpiece geometry, support point positions, and cutting plan. This preliminary analysis identifies optimal paths that avoid risk regions entirely, eliminating the need for multiple repositioning operations during the cutting process and thus reducing total manufacturing time.
Solution Approach 2:
The invention changes the cutting parameters by selecting different starting-cut points and cut-away points based on the calculated risk regions. By optimizing these parameters before cutting begins, the system finds the shortest safe path that avoids tilting, thereby minimizing positioning path duration while still preventing collision damage.
Data Source
AI summary
Controlling a beam cutting device having a cutting tool is disclosed. A workpiece part can be cut out of a workpiece along a cutting contour. A cutting plan for the workpiece having a cutting contour for a workpiece part to be cut out of the workpiece is specified. Subsequently, the relative position of the workpiece and/or of the cutting plan and/or of the workpiece part to be cut out is determined. The relative position of the at least one support point of the workpiece support is determined. Subsequently, at least one risk region on the cutting contour of the workpiece part to be cut out is determined, followed by the defining of at least one starting-cut point and/or one cut-away point for the cutting tool on the cutting contour of the workpiece part to be cut out. A computer-implemented method and a beam cutting device is also disclosed.