Swingable Stylus Displacement Detector for Multi-Directional Measurement
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Solution Overview
Problem
Conventional displacement detectors require attitude changes for multi-directional measurements, leading to a cumbersome configuration and reduced measurement efficiency, with existing solutions having restricted degree of freedom and complex setups.
Innovation Solution
A displacement detector with a stylus that is swingable in a plane including two perpendicular directions, allowing for measurement in both directions with a single displacement detecting unit, featuring a stylus holding part and a displacement detecting unit, which includes a differential transformer and a measurement force applying mechanism to ensure accurate and efficient measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a displacement detector uses two contactors to measure displacement in two directions, then measurement capability in multiple directions is improved, but device complexity increases and degree of freedom of attitude is restricted
Solution Approach 1:
The patent merges two separate contactors into a single contactor that can detect displacement in two perpendicular directions. The stylus is configured to swing in a plane including both first and second directions, allowing one contactor to replace two while maintaining multi-directional measurement capability. This reduces structural complexity while preserving adaptability.
Solution Approach 2:
The single contactor is designed to perform multiple functions by detecting displacement in both the first direction and the second direction perpendicular to it. The stylus holding part enables the contactor to swing in a plane that includes both directions, making the contactor universal for multi-directional measurement without requiring separate contactors for each direction.
2Measurement precision
If a displacement detector changes attitude for different measurement directions, then measurement accuracy is improved, but work efficiency deteriorates due to cumbersome operation
Solution Approach 1:
The patent implements a dynamic stylus holding part that enables the stylus to swing freely in a plane including both first and second directions. This dynamic configuration allows the displacement detector to maintain measurement accuracy in multiple directions without requiring attitude changes, thereby improving work efficiency while preserving measurement precision.
3Stability of the object's composition
If a displacement detector uses a shaft to connect arms of two contactors, then structural stability is improved, but measurement accuracy deteriorates due to movement errors
Solution Approach 1:
The patent extracts and eliminates the shaft component that connected the arms of two contactors. By using a single contactor with a stylus that swings in a plane, the design removes the shaft and its associated moving parts. This extraction of problematic components eliminates the source of movement errors while maintaining structural stability through the simplified single-contactor configuration.
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 simplifies the displacement detector's design, reduces production costs, and enhances measurement accuracy by minimizing errors from moving parts, while allowing for automatic detection of measurement directions, thereby improving measurement efficiency.
Implementation Method 1
a displacement detecting unit provided in the detector body and configured to detect displacement of the contactor in association with contact between the contactor and the measuring surface
Data Source
AI summary
Provided are a displacement detector, a surface shape measuring apparatus, and a roundness measuring apparatus capable of measuring displacement in a plurality of directions, having a simple configuration, and capable of highly accurate measurement. A displacement measurer includes: a detector body; a substantially L-shaped stylus having a contactor to be in contact with a measuring surface of an object to be measured; a stylus holding part that is provided in the detector body and holds the stylus in a swingable manner, with a swing plane being a plane including a first direction and a second direction that are perpendicular to each other; and a displacement detecting unit that is provided in the detector body and detects displacement of the contactor associated with contact between the contactor and the measuring surface.