Cutting Blade Vacuum Fixing Mechanism
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Solution Overview
Problem
Conventional cutting apparatuses require high torque to remove the nut for replacing the cutting blade, which reduces production efficiency due to frequent blade wear or chipping.
Innovation Solution
A cutting apparatus with a support flange that uses a vacuum system to securely hold the cutting blade between the support flange and the fixing flange, allowing for easy removal and replacement by canceling suction when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a nut and screw thread structure is used to fix the cutting blade, then the cutting blade can be firmly held during cutting operation, but large torque is required to remove the nut for blade replacement
Solution Approach 1:
The patent replaces the traditional nut-screw thread mechanical fastening system with a magnetic field-based fixing system. The support flange contains a magnet that magnetically attracts and holds the cutting blade, eliminating the need for nuts and screw threads. This allows the blade to be firmly held during cutting operation while enabling easy removal by simply overcoming the magnetic force, significantly reducing the torque required for blade replacement.
Solution Approach 2:
The patent introduces a suction hole in the support flange that can be connected to a vacuum source. By applying negative pressure (suction) through the suction hole, the cutting blade is held firmly against the support flange during cutting operation. When blade replacement is needed, the suction is released and the blade can be easily removed without requiring large torque to overcome threaded fasteners.
2Reliability
If the nut is tightly engaged to prevent loosening during cutting, then the cutting blade remains secure, but blade replacement becomes time-consuming due to high removal torque
Solution Approach 1:
The patent replaces the nut-screw thread mechanical fastening system with a magnetic field-based fixing system. The support flange contains a magnet that magnetically attracts and holds the cutting blade, eliminating the need for nuts and screw threads. This allows the blade to be firmly held during cutting operation while enabling easy removal by simply overcoming the magnetic force, significantly reducing the torque required for blade replacement.
Solution Approach 2:
The patent introduces a suction hole in the support flange that can be connected to a vacuum source. By applying negative pressure (suction) through the suction hole, the cutting blade is held firmly against the support flange during cutting operation. When blade replacement is needed, the suction is released and the blade can be easily removed without requiring large torque to overcome threaded fasteners.
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
Enables efficient replacement of the cutting blade without the need for high torque, improving production efficiency by simplifying the blade replacement process.
Implementation Method 1
a reduced pressure is applied between the support flange and the fixing flange to suck the fixing flange toward the support flange, thereby fixing the cutting blade between the support flange and the fixing flange
Data Source
AI summary
A cutting unit includes a spindle, a spindle housing, a support flange on the front of the spindle, a cutting blade detachably supported to the support flange, and a fixing flange for fixing the cutting blade to the support flange. The support flange includes a boss portion adapted to be inserted through a central opening of the cutting blade, a flange portion for supporting one side surface of the cutting blade, and a cylindrical portion for engaging the front of the spindle. The flange portion has a suction hole opening toward the fixing flange, and the cylindrical portion has a communication hole communicating with the suction hole. The communication hole is connected to a vacuum source through a rotary joint fixed to the spindle housing so that communication between the communication hole and the vacuum source is selectively made by an on-off valve.