Spherical-Tipped Distance Gauge for Accurate Vehicle Body Distortion Measurement
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Solution Overview
Problem
Conventional measuring tools for vehicle body distortion measurement face challenges in accuracy due to tilting of measurement pins, leading to variable measurement values.
Innovation Solution
A point-to-point distance gauge system with a rod-like main body, featuring a spherical-tipped shaft and a conical-tipped shaft that can be folded and rotated to maintain desired angles, along with a magnet-based attracting tool for precise alignment and measurement, ensuring consistent contact and reducing positional displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conical-tipped measurement pin is inserted into a reference hole, then the measurement can be performed, but the measurement values change when the pin is tilted, reducing measurement precision
Solution Approach 1:
The measurement pin tip is changed from a conical shape to a spherical shape. The spherical tip maintains constant contact with the reference hole center regardless of the pin's tilt angle, eliminating measurement errors caused by tilting. This curvature-based solution allows the pin to be easily inserted at various angles while maintaining measurement precision.
Solution Approach 2:
The geometric parameter of the pin tip is changed from conical to spherical. This parameter change fundamentally alters the contact mechanics between the pin and reference hole, transforming the measurement system from one sensitive to tilt angles to one that is insensitive to tilt angles, thereby resolving the contradiction between ease of operation and measurement precision.
2Adaptability or versatility
If the measurement pin is made tiltable to accommodate non-upright measurement points, then adaptability improves, but measurement accuracy deteriorates due to variable measurement values
Solution Approach 1:
The spherical tip geometry enables the measurement pin to adapt to non-upright measurement points by tilting, while the spherical contact surface ensures that the measurement value remains constant regardless of the tilt angle. This resolves the contradiction by allowing adaptability through tilting without sacrificing precision.
Solution Approach 2:
The measurement pin is designed to be dynamically tiltable rather than fixed in a vertical position. This dynamic capability allows the pin to adapt to various measurement point orientations while the spherical tip ensures that the measurement reading remains invariant during tilting, thus maintaining precision across different adaptive positions.
3Measurement precision
If a spherical-tipped shaft is used instead of a conical tip, then consistent contact is maintained even when tilted, but the device complexity increases
Solution Approach 1:
The spherical tip is a simple geometric modification of the measurement pin that achieves consistent contact without requiring complex mechanisms. The sphere naturally maintains constant contact with the reference hole center during tilting, providing measurement precision improvement with minimal increase in device complexity.
Solution Approach 2:
The spherical tip geometry inherently provides the function of maintaining constant contact during tilting without requiring additional control mechanisms, sensors, or adjustment systems. The shape itself performs the measurement stabilization function, avoiding complexity while improving precision.
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
The system provides accurate and consistent distortion measurements by maintaining constant contact and allowing for precise alignment, even when the measurement points are not directly upright, enhancing workability and reducing measurement errors.
Implementation Method 1
the spherical-shaped tip portion (12a) of the spherical-tipped shaft (12) is made of a ferromagnetic material which is attracted to a magnet
Data Source
AI summary
A point-to-point distance gauge includes a rod-like main body formed by fitting a plurality of cylindrical rods 111, 112, and 113 having different diameters with one another so as to be expandable to a desired length; a spherical-tipped shaft 12 provided on one end 113a of the main body 11 so as to be capable of being folded to a desired angle with respect to the main body 11 and to be capable of maintaining the desired angle, a tip 12a of the spherical-tipped shaft 12 being formed in a spherical shape having a diameter larger than a shaft diameter; and a conical-tipped shaft 13 provided on the other end 113a of the main body 11 so as to be capable of being folded to a desired angle with respect to the main body 11 and to be capable of maintaining the desired angle, a tip 13a of the conical-tipped shaft 13 being formed in a conical shape.