Chucking Device Inclined Guiding Section for Multilayer Disc Alignment
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Solution Overview
Problem
Conventional chucking devices face difficulties in accurately aligning high-density multilayer discs due to misalignment and require excessive force for loading, leading to potential clamp errors.
Innovation Solution
The chucking device incorporates an aligning claw with an inclined guiding section and a centering case section featuring different inclined surfaces, reducing the disc loading force by guiding the disc without contact with the top half of the multilayer disc, thereby preventing clamp errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the contact prevention inclined section is used to prevent the top half disc from contacting the chucking device, then alignment accuracy is improved, but the disc loading force becomes excessively large
Solution Approach 1:
The chucking device is divided into two functional sections: the inclined guiding section (first functional section) that contacts the bottom half disc for alignment, and the contact prevention inclined section (second functional section) that prevents the top half disc from contacting. This segmentation allows each section to perform its specific function independently, achieving accurate alignment while controlling loading forces.
Solution Approach 2:
Different sections of the chucking device are designed with different functional properties: the inclined guiding section has a specific inclination angle optimized for guiding and aligning the bottom half disc, while the contact prevention inclined section is designed to prevent contact with the top half disc. This local differentiation of functional properties enables precise alignment without excessive loading forces.
2Device complexity
If the movable section contacts solely the bottom half disc for alignment, then alignment is simplified, but the inclination angle must be large causing excessive elastic bending
Solution Approach 1:
The alignment function is segmented between two sections: the inclined guiding section that makes contact with the bottom half disc at a controlled angle, and the contact prevention inclined section that prevents the top half disc from contacting. This segmentation allows the inclined guiding section to use a smaller, more controlled inclination angle, reducing excessive elastic bending while maintaining alignment simplicity.
3Ease of operation
If a large disc loading force is applied to guide the multilayer disc, then the disc can be loaded, but clamp errors occur before contact with the retainer section
Solution Approach 1:
The inclined guiding section acts as an intermediary element between the disc loading force and the retainer section. It gradually guides the bottom half disc into the correct position through controlled contact, distributing the loading force over a longer distance and reducing the peak force required, thereby preventing clamp errors.
Solution Approach 2:
The inclined guiding section performs preliminary alignment and positioning of the bottom half disc before the retainer section makes contact. This preliminary action ensures the disc is properly positioned and reduces the risk of clamp errors when the retainer section engages.
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 design effectively reduces the disc loading force and ensures accurate alignment of multilayer discs by distributing the force more efficiently, minimizing the risk of clamp errors and misalignment.
Implementation Method 1
a guiding section, having an inclined surface so as to guide the disc to the retainer section
Data Source
AI summary
A chucking device comprises a retainer section for retaining a disc, a guiding section for guiding the disc to the retainer section, and a supporter for supporting the retainer section and the guiding section. The guiding section has a small enough angle for a guiding section side angle of inclination θ1 so as not to make contact with a upward facing disc, of a multilayer disc, thereby reducing a disc loading force.