Cutting Head Route Planning for Tilted Workpiece Collision Avoidance
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Solution Overview
Problem
Existing cutting machining methods face issues with tilted workpiece parts colliding with the cutting head, leading to potential damage and inefficient material utilization, especially when precise cutting is required.
Innovation Solution
A method that determines the position of support points on a workpiece, establishes starting-point-free and end-point-free regions, calculates torques and tilt heights, and prioritizes points for safe cutting using a grid-based approach, optimizing the cutting path to avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If workpiece parts are positioned close together to improve material utilization, then material utilization is improved, but the risk of collision between tilted workpiece parts and the cutting head increases
Solution Approach 1:
The patent applies preliminary action by calculating and determining the optimal starting points for cutting before the actual cutting process begins. The system pre-calculates torque values and tilt heights for potential starting points, identifies safe starting points that minimize collision risk, and plans the cutting route accordingly. This advance preparation allows workpiece parts to be positioned closer together while maintaining safety, as the cutting sequence is optimized beforehand to prevent collisions during the actual cutting operation.
2Reliability
If workpiece parts are positioned far apart to avoid collisions, then collision risk is reduced, but material utilization deteriorates
Solution Approach 1:
The patent applies parameter changes by dynamically evaluating multiple parameters (torque, tilt height, starting point position) for each potential cutting starting point. The system calculates torque in stabilizing and tilting directions, determines tilt heights, and uses these parameter variations to identify optimal starting points. By changing and optimizing these parameters, the system can position workpiece parts closer together while maintaining collision avoidance through intelligent starting point selection and route planning.
3Reliability
If microjoints are used to prevent tilting, then collision risk is reduced, but manufacturing complexity increases due to additional steps
Solution Approach 1:
The patent applies mechanics substitution by replacing the mechanical microjoint connection method with a computational approach. Instead of using physical microjoints to prevent tilting, the system uses torque calculations and starting point optimization to predict and prevent tilting before it occurs. The cutting route is planned based on calculated torque values and tilt heights, substituting the need for mechanical restraints with intelligent algorithmic control, thereby reducing process complexity.
4Manufacturing precision
If microjoints are severed manually or mechanically after cutting, then workpiece parts are fully separated, but additional rework and time are required
Solution Approach 1:
The patent applies preliminary action by determining the optimal starting points and planning the cutting route before the cutting process begins. By pre-calculating torque values, tilt heights, and identifying safe starting points, the system ensures that the cutting operation itself is optimized to prevent tilting and collision during the cutting process. This preliminary planning allows for complete cutting separation without requiring additional post-cutting operations to sever microjoints, eliminating rework time.
Data Source
AI summary
A method for cutting machining of a plate-shaped workpiece, including determining the position of the support points either by measuring or inferring the position of the support points and/or the relative position of the workpiece, establishing starting-point-free regions, establishing end-point-free regions, establishing starting-point-free and end-point-free regions depending on the inferred or measured position of the support points and/or the relative position of the workpiece, establishing a grid of possible starting points and end points, omitting the starting-point-free and end-point-free regions determined in advance, either calculating a torque in a stabilizing and/or tilting direction or calculating a tilt height and/or a tilt depth for each of the points on the grid, setting a priority of points on the grid, transmitting the priority of points to a route planning means of the cutting head, and selecting one of the points on the grid and carrying out the cutting machining.