Disc Chucking Method Using Magnet Attraction Control
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Solution Overview
Problem
Disc chucking methods using magnets in bio discs and feeding units often result in mis-chucking due to the state and direction of the disc loaded onto a tray, leading to defective operations and failure in positioning the disc correctly for analysis or testing.
Innovation Solution
A disc chucking method and apparatus that involves moving a feeding unit with a magnet to a position where the attraction between the magnet in the feeding unit and the disc is minimized when the tray is open, and then strategically moving the feeding unit to place the disc's center in a turn table, including movements from the outer to the inner circumference and vice versa, to prevent mis-chucking when the tray is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnets are installed in the disc and feeding unit to fix the disc position, then the disc can be held firmly, but mis-chucking occurs according to the state and direction of the disc loaded onto the tray
Solution Approach 1:
The feeding unit performs preliminary movements to the outermost circumference of the disc before the actual chucking operation. This preliminary positioning action ensures that the magnetic attraction is minimized during the critical loading phase, allowing the disc to be placed correctly without mis-chucking, while still enabling firm holding when needed for operation.
2Manufacturing precision
If the feeding unit remains stationary, then the structure is simple, but the disc cannot be accurately positioned in the turn table when the tray is closed
Solution Approach 1:
The feeding unit is designed with dynamic movement capabilities, transitioning from a stationary state to an active movement system. The feeding unit moves to the outermost circumference of the disc and performs strategic movements during the chucking process, enabling precise disc positioning in the turn table while maintaining structural simplicity through controlled, purposeful motion rather than continuous complexity.
3Manufacturing precision
If the feeding unit moves continuously, then the disc can be positioned accurately, but the operation time increases
Solution Approach 1:
The feeding unit employs periodic action by moving to the outermost circumference of the disc at specific intervals and performing strategic movements only when necessary during the chucking process. This periodic engagement allows accurate disc center placement in the turn table while minimizing unnecessary motion time, thereby reducing the overall operation time compared to continuous movement.
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 approach effectively prevents mis-chucking, ensuring the disc is accurately positioned in the turn table, thereby enabling stable operations and preventing defective disc driving apparatus performance.
Implementation Method 1
attraction between a second magnet installed in the feeding unit and the first magnet
Data Source
AI summary
Provided are a disc chucking method of preventing mis-chucking from occurring according to a state and direction of a disc loaded onto a tray when the tray is closed, and a disc driving apparatus for performing the disc chucking method. The method include: opening a tray on which a disc in which a first magnet is installed is loadable; moving a feeding unit to a position where attraction between a second magnet installed in the feeding unit and the first magnet is relatively low; and if the tray is closed, placing a center of the disc in a turn table.