Cutting Line Start Positioning for Complete Corner Cutting
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Solution Overview
Problem
Existing cutting devices struggle to accurately cut complex, endless unicursal designs without leaving uncut parts or cutting excessively, especially when corners have specific angles and lengths.
Innovation Solution
A cutting device that sets a press-contact start position on a specific straight line a predetermined length away from the corner and designates the corner as the press-contact end position, ensuring precise cutting along the cutting line by adding the predetermined length to the cutting line's round length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cutting device follows the cutting line exactly as designed, then the cutting precision should be high, but uncut parts are left at corners with specific angles and lengths
Solution Approach 1:
The system performs preliminary analysis of the cutting line design data to identify corners with specific angles and adjacent straight line lengths. Before cutting begins, it calculates and determines the optimal press-contact start position on each specific straight line, ensuring that the cutter blade will reach all corner points by the end of the cutting path.
Solution Approach 2:
The system uses feedback from the cutting line design data (angle and length parameters) to dynamically adjust the press-contact start position. The controller continuously monitors the geometric characteristics of corners and modifies the cutting path parameters accordingly, ensuring that the cutter blade trajectory accounts for the blade width and achieves complete cutting at all corners.
2Reliability
If the cutting device adjusts the press-contact start position to ensure complete cutting, then all parts are cut including corners, but the cutting path length increases
Solution Approach 1:
The system applies partial action by adjusting the press-contact start position only at specific locations (corners with specific angles and adjacent straight line lengths) rather than along the entire cutting path. This selective adjustment ensures complete cutting at critical corners while minimizing the overall increase in cutting path length, thereby balancing completeness with efficiency.
3Manufacturing precision
If the cutter blade trajectory is unstable, then cutting precision deteriorates, but uncut parts may be left behind
Solution Approach 1:
The system performs preliminary calculation of the press-contact start position based on the cutting line design data and cutter blade characteristics. This pre-determined positioning compensates for potential trajectory instability during cutting, ensuring that even if the blade path varies slightly, the cutter will still reach all corner points and complete the cutting task.
Data Source
AI summary
A cutting device includes at least one processor that receives data in which an extended shape of a cutting line is set as a design, and in response to the design being an endless unicursal design that has a corner having an angle formed by two adjacent straight lines being a predetermined angle or greater and in which at least one of the straight lines is a specific straight line having a length set to a predetermined length or greater, sets a position on the specific straight line at least the predetermined length away from the corner along the specific straight line as a press-contact start position of a cutting member and sets the corner as a press-contact end position thereof to add at least the predetermined length to a length of one round of the cutting line for the cutting member to cut along the cutting line.