Magnetic Coupling for Shape Measurement Device Impact Protection
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Solution Overview
Problem
Conventional shape measurement devices face issues with impact transmission to the pivot when external force is applied, particularly in the X-axis direction, leading to potential damage and increased manufacturing costs due to complex magnetic coupling arrangements.
Innovation Solution
The shape measurement device incorporates a measurement arm support with a movement rail and a body coupling block featuring inclined magnet parts and a position-fixing member that allows for magnetic coupling in the X-axis and Y-axis directions, enabling easy removal of the measurement arm from the support when impact occurs, while minimizing damage and simplifying the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If magnets are arranged in three directions with the body coupling block and body to enable easy removal when impact is applied, then the measurement arm can be easily removed from the measurement arm support, but the device complexity increases and manufacturing cost increases
Solution Approach 1:
The patent extracts the magnetic coupling function from a complex three-directional magnet arrangement and concentrates it into a single magnet provided on the measurement arm support. This single magnet is positioned to interact with a magnet coupling plate on the measurement arm, enabling the same easy removal function with significantly reduced structural complexity
Solution Approach 2:
The patent merges multiple magnetic coupling functions into a single magnet and magnet coupling plate arrangement. Instead of using separate magnets in three different directions, the design combines all necessary coupling and release functions into one magnetic interaction point, simplifying the overall structure while maintaining the ability to easily remove the measurement arm when impact is applied
2Reliability
If magnets are arranged in three directions with the body coupling block and body, then the measurement arm can be easily removed when impact is applied, but the manufacturing cost increases due to increased number of parts
Solution Approach 1:
The patent reduces the number of magnetic components from multiple magnets arranged in three directions to a single magnet on the measurement arm support, directly reducing part count and manufacturing cost while maintaining the impact protection function through the single magnet's interaction with the magnet coupling plate
Solution Approach 2:
The patent uses simpler, fewer magnetic components that are easier and cheaper to manufacture. The single magnet and magnet coupling plate design replaces expensive multi-directional magnet arrangements, reducing manufacturing costs while maintaining sufficient reliability for impact protection during measurement operations
3Ease of operation
If the body is bent in an L shape to enable easy removal in Y-axis and Z-axis directions, then the measurement arm can be easily removed in those directions, but the bent portion hits the body coupling block when force acts in X-axis direction, preventing removal and transmitting impact to the pivot
Solution Approach 1:
The patent replaces the mechanical L-shaped body structure with a magnetic coupling system. Instead of relying on the geometric shape of an L-shaped body to enable removal in specific directions, the design uses magnetic force between a single magnet and magnet coupling plate to enable easy removal in any direction, eliminating the problem of the bent portion hitting the body coupling block
Solution Approach 2:
The single magnet and magnet coupling plate arrangement provides universal removal capability in all directions (X-axis, Y-axis, and Z-axis), unlike the L-shaped body that only worked well for specific directions. The magnetic coupling system can be easily detached from any direction, making the measurement arm universally removable regardless of impact direction
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 configuration effectively prevents impact transmission to the pivot, allows for easy removal of the measurement arm in any direction, and reduces manufacturing costs by simplifying the magnetic coupling system.
Implementation Method 1
a first magnet part 117 and a second magnet part 118 coupled to opposite sides of the body coupling block 115 in an embedded manner... coupled to the first magnet part 117 and the second magnet part 118 by magnetic force to couple the body 121 to the body coupling block 115
Data Source
AI summary
A shape measurement device includes a stylus configured to contact an object to be measured; a measurement arm that supports the stylus to allow the stylus to contact the object to be measured; a measurement arm part that supports the measurement arm; and a measurement arm support that supports the measurement arm part to allow the stylus to move along an outer shape of the object to be measured. The measurement arm support includes a support body provided with a movement rail formed on a top surface thereof. A body coupling block is coupled to the movement rail to move along the movement rail and is detachably coupled to the measurement arm part. The measurement arm portion includes a body provided with a block accommodation groove to accommodate the body coupling block and a position-fixing member coupled to a lower surface of the body defining the block accommodation groove.