Cutting Machine Blade Wear Distribution via Dynamic Positioning
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Solution Overview
Problem
Existing cutting machines have limited service life for cutting blades due to constant wear patterns, leading to premature blade replacement and increased cutting force requirements.
Innovation Solution
The cutting machine's control device alternately varies the position of the knife holder, combining motorized positioning with ultrasound oscillation to distribute wear across a larger adjustment range, reducing cutting force and extending blade life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the cutting blade is kept at a constant position during cutting operations, then the cutting process is simple and stable, but the wear occurs at the same location leading to reduced service life
Solution Approach 1:
The cutting blade position is changed from static to dynamic by implementing motorized positioning that alternates the blade position between different locations along the cutting edge. This dynamic positioning distributes wear across multiple areas of the cutting edge, thereby extending the service life of the cutting blade while managing the complexity through automated control.
2Duration of action of moving object
If the cutting area is kept constant during cutting operations, then the cutting process is stable and easy to control, but the cutting force increases and service life decreases
Solution Approach 1:
The cutting blade position is varied periodically during cutting operations, alternating between different positions along the cutting edge. This periodic position variation distributes the cutting force and wear across different areas, reducing the cumulative cutting force required and extending blade service life while maintaining stable and controllable cutting processes.
3Reliability
If the cutting blade is worn out when wear reaches predetermined level, then the cutting quality is maintained, but frequent blade replacement increases downtime and cost
Solution Approach 1:
The system performs preliminary wear distribution by alternating the cutting blade position before the blade becomes completely worn out. By proactively distributing wear across different areas of the cutting edge during operation, the blade maintains acceptable cutting quality for longer periods, reducing the frequency of blade replacement and minimizing downtime.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method significantly extends the service life of cutting blades by evenly distributing wear and reducing cutting force, allowing for more efficient use of the cutting edge while maintaining effective material cutting.
Implementation Method 1
the knife holder being positioned by the control device during the number of cutting processes by motor control at various positions
Implementation Method 2
It is known in the prior art to use ultrasound to excite the blade holder to oscillate during the cutting processes
Implementation Method 3
the blade holder is excited to oscillate with ultrasound in addition to the motorized positioning
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The operating method involves holding a cutting blade (2) in a blade holder (1), where the cutting blade has a cutting edge (3) extending over a cutting edge length (L). The cutting blade is guided through a material (4) to be cut during multiple cutting operations along a cutting rail, so that the cutting blade cuts the material to be cut with a sectional area (9) of its cutting edge. The sectional area has a sectional area length (l) which is only a fraction of the cutting edge length. The oscillation amplitude is smaller than the sectional area length. An independent claim is included for a control program for a control unit of a cutting machine.