Flexible Material Cutting Path Modification for Blade Attraction
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Solution Overview
Problem
The cutting of parts in flexible materials, such as leather, can result in defects when two parts are too close together, causing the cutting tool to be 'attracted' by the first cut, leading to quality issues in the second part.
Innovation Solution
A method for automatically modifying the cutting paths of two neighboring parts by identifying and verifying the alignment of cutting segments, calculating a common cutting trajectory, and connecting the paths to ensure maximum distance and absence of other segments, thereby avoiding defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If parts are placed close together to maximize material utilization, then productivity and material efficiency improve, but cutting quality deteriorates due to blade attraction effects
Solution Approach 1:
The patent applies preliminary action by detecting close proximity between parts before cutting begins and pre-modifying their cutting paths to create separation. The algorithm identifies parts within a threshold distance and adjusts their trajectories in advance, preventing the blade attraction effect from occurring during the actual cutting process.
Solution Approach 2:
The patent changes the cutting path parameters (trajectory coordinates, timing) dynamically based on the spatial relationship between parts. When parts are detected to be too close together, the system modifies their cutting path parameters to create optimal separation, transforming the cutting trajectories while maintaining efficient material utilization.
2Manufacturing precision
If cutting paths are modified to prevent blade attraction, then cutting quality improves, but process complexity increases
Solution Approach 1:
The system applies self-service by automatically detecting close proximity conditions and self-modifying cutting paths without human intervention. The algorithm autonomously identifies problematic part pairs, calculates modified trajectories, and updates the cutting program, eliminating the need for manual path adjustment while maintaining cutting quality.
Solution Approach 2:
The patent implements feedback by continuously monitoring the spatial relationship between parts and adjusting cutting paths based on detected proximity conditions. The system uses the detected distance information as feedback to dynamically modify trajectories, creating a closed-loop control system that ensures cutting quality while managing process complexity through algorithmic automation.
3Manufacturing precision
If manual adjustment of cutting paths is performed, then cutting quality can be maintained, but time consumption and productivity decrease
Solution Approach 1:
The patent replaces manual mechanical adjustment of cutting paths with an automated computational system. The algorithm substitutes human operators by automatically calculating and modifying cutting trajectories based on part positions, eliminating time-consuming manual intervention while maintaining cutting quality through precise algorithmic control.
Solution Approach 2:
The system creates computational models (digital copies) of the parts and their spatial relationships to simulate and optimize cutting paths before actual cutting. By working with digital representations rather than physical adjustments, the system rapidly evaluates multiple path configurations and selects optimal solutions without time-consuming manual trial and error.
Data Source
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AI summary
The invention relates to a method for automatically modifying the cutting trajectory for parts intended to be cut from a flexible material by automatically moving a cutting tool in accordance with predetermined cutting trajectories, the cutting trajectories associated with each part being defined by a succession of cutting segments forming a polygon, the method comprising a step of identifying two cutting segments (c-2, c-3) belonging to two different parts (p-2, p-3) to be cut from the material and for which a condition relating to the maximum distance between these cutting segments is complied with, a step of verifying that the two cutting segments are located opposite each other, a step of verifying the absence of other cutting segments between the two cutting segments, a step of calculating a common cutting trajectory for the two cutting segments and a step of linking the common cutting trajectory to the cutting trajectory for the two parts to be cut so as to obtain modified cutting trajectories for the two components to be cut.