Cutting Machine Blade Lifting for Sharp Corner Formation
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Solution Overview
Problem
Existing cutting machines face difficulties when changing direction, especially at large angles, as the blade may get caught or bound with the sheet material, making smooth direction changes impossible.
Innovation Solution
A cutting machine comprising a supporting platform, a cutter with a shaft and blade, a cutter carriage, and a controlling device that executes specific processes to set cutting lines, lift the blade, and adjust its position to ensure smooth corner cutting by maintaining a predetermined distance from the intersection point, allowing for clean and sharp corner formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cutting blade changes direction at a large angle during cutting operation, then the cutting direction can be changed to follow complex cutting lines, but the blade may get caught on the sheet material or become bound, preventing smooth direction changes
Solution Approach 1:
The blade is lifted away from the sheet material before changing cutting direction. This preliminary action of separation prevents the blade from getting caught or bound during direction changes, especially at large angles, while still allowing the cutter to follow complex cutting lines with varying directions
2Productivity
If the blade is continuously pressed against the sheet material during cutting, then cutting efficiency is maintained, but the blade cannot be smoothly redirected when changing cutting direction
Solution Approach 1:
The cutting operation uses periodic pressing and lifting of the blade. During straight cutting segments, the blade is pressed against the material for efficient cutting. At direction change points, the blade is temporarily lifted to avoid binding, then re-engaged for the next cutting segment. This periodic action maintains overall productivity while enabling direction changes
3Loss of time
If the cutter moves directly from one cutting direction to another without intermediate action, then operation time is reduced, but the blade becomes bound with the sheet material at the corner portion
Solution Approach 1:
Before executing a sharp direction change at a corner portion, the blade is preliminarily lifted away from the sheet material. This prevents the blade from becoming bound or caught during the direction transition, ensuring clean corner portions and reliable cutting quality without requiring excessive dwelling time
Data Source
AI summary
A cutting machine can be configured to set a cutting line with respect to a cutting material that is placed on a supporting platform, cut the cutting material along one cutting line that intersect with and changes direction at a second cutting line at a corner portion, leaving a part of the cutting material connected along a predetermined distance from a point of intersection of the corner portion, and cutting along the other cutting line so as to not leave a connected part, up to a predetermined distance from the point of intersection of the corner portion.