Base-Integrated Blade Shrink-Fit Assembly Without Adhesive
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Solution Overview
Problem
The existing methods for manufacturing base-integrated blades require significant adhesive usage, which can lead to quality issues due to adhesive protrusion and affect the cutting performance and appearance of the blade.
Innovation Solution
A method involving a base with an annular projection that is shrunk to fit into a cutting blade with a circular opening, allowing for adhesive-free or minimal adhesive integration by expanding the base to securely fix the cutting blade, avoiding adhesive protrusion and quality degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a considerable amount of adhesive is applied to the base to securely fix the cutting blade, then the cutting blade is firmly attached to the base, but the adhesive protrudes from the pasted region and adheres to the outer circumferential part of the cutting blade, adversely affecting processing and appearance quality
Solution Approach 1:
The invention extracts and eliminates the adhesive from the integration process between the base and cutting blade. Instead of using adhesive, the patent employs a mechanical interference fit where the projection on the base is inserted into the opening of the cutting blade, securing the blade without any adhesive material that could protrude and affect appearance quality.
Solution Approach 2:
The invention introduces a projection as an intermediary mechanical feature on the base that mediates the connection between the base and cutting blade. This projection fits into the opening of the cutting blade, providing a clean mechanical interface that eliminates the need for adhesive and prevents any material protrusion that would compromise appearance.
2Stability of the object's composition
If adhesive is used to integrate the base and cutting blade, then the two components are joined together, but the adhesive may protrude and adhere to the outer circumferential part of the cutting blade, adversely affecting processing
Solution Approach 1:
The invention removes adhesive entirely from the integration process. By using a projection-based mechanical fit, it extracts the harmful element (adhesive) that could protrude and interfere with cutting blade processing, while maintaining stable integration through precise geometric matching of the projection and opening.
3Reliability
If a sufficient amount of adhesive is applied to securely fix the cutting blade, then reliable fixation is achieved, but the adhesive protrusion worsens the appearance of the cutting blade and lowers the quality of the base-integrated blade
Solution Approach 1:
The invention extracts adhesive from the system and replaces it with a projection-based mechanical connection. This eliminates the source of appearance degradation while maintaining reliable fixation through the interference fit between the projection and the cutting blade opening.
Solution Approach 2:
The invention changes the fundamental parameter of connection method from chemical adhesion to mechanical interference. By altering the fixation mechanism from adhesive-based to geometry-based, it achieves reliable fixation without the appearance-quality compromises associated with adhesive protrusion.
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 the integration of the base and cutting blade without adhesive, preventing quality issues associated with adhesive protrusion and enhancing the blade's performance and appearance.
Implementation Method 1
a second step of lowering a temperature of the base and thus shrinking the base to have the outside diameter of the projection smaller than the diameter of the opening of the cutting blade
Implementation Method 2
a fourth step of raising the temperature of the base and thus expanding the base in such a manner that the cutting blade is fixed to the base
Data Source
AI summary
There is provided a base-integrated blade manufacturing method for manufacturing a base-integrated blade by fixing a cutting blade having a circular opening to a base having an annular projection. The method includes a first step of preparing the base having the projection that has an outside diameter greater than a diameter of the opening of the cutting blade, and the cutting blade, a second step of lowering a temperature of the base and thus shrinking the base to have the outside diameter of the projection smaller than the diameter of the opening of the cutting blade, a third step of inserting the projection into the opening of the cutting blade, and a fourth step of raising the temperature of the base and thus expanding the base in such a manner that the cutting blade is fixed to the base.