Digital Comparator Retractable Anvil U-Frame Precision
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Solution Overview
Problem
Current comparators lack the capability to digitally display dimensional differences less than 1 μm due to the absence of battery-powered sensors with resolution below 1 μm, hindering digitization and precision in measurements.
Innovation Solution
A digital comparator design featuring a U-shaped frame with a measurement unit that includes an anvil contact portion, an interlocking portion, and a detection unit, which magnifies and detects the displacement of the spindle through a rotation mechanism, allowing for precise digital display of measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a battery-powered sensor with resolution less than 1 μm is used, then measurement precision is improved, but device complexity increases due to power supply requirements
Solution Approach 1:
The patent replaces battery-powered electronic sensors with a purely mechanical measurement system. The mechanical indicator and scale provide measurement capability without requiring external power supply, thereby avoiding the complexity of power management while maintaining adequate measurement precision for dimensional differences
Solution Approach 2:
The measurement system uses the inherent mechanical properties of the comparator components (anvil, spindle, indicator mechanism) to generate measurement signals passively. The system serves itself by converting mechanical displacement directly into readable measurement values without requiring external energy input
2Reliability
If the anvil contact portion length is increased to improve measurement stability, then measurement reliability is improved, but the device size increases
Solution Approach 1:
The patent transitions from a linear contact structure to a rotational contact mechanism. The anvil contact portion rotates around a support shaft, converting linear displacement into rotational motion. This dimensional change allows the same measurement function to be achieved with a more compact structure while maintaining stability through the rotational mechanism
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
Enables the digital display of dimensional differences with enhanced precision, overcoming the limitations of existing comparators by magnifying the displacement of the anvil, thereby achieving accurate and error-free measurements.
Implementation Method 1
an anvil contact portion (49) that rotates around a support shaft (48) in accordance with advancement and retraction of the anvil (4); an interlocking portion (50) that is formed to have a length greater than the length of the anvil contact portion (49), is supported so as to be rotatable around the support shaft (48), and is coupled to the anvil contact portion (49)
Data Source
AI summary
Provided is a comparator including: a substantially U-shaped frame; an anvil supported at one end of the frame in an advanceable and retractable manner; a spindle supported at another end of the frame coaxially with the anvil in an advanceable and retractable manner; a measurement unit that measures the advancement and retraction of the anvil; and a display unit that displays a measurement result of the measurement unit. The measurement unit includes: an anvil contact portion that rotates around a support shaft in accordance with the advancement and retraction of the anvil; an interlocking portion that is formed to have a length greater than the length of the anvil contact portion, is supported so as to be rotatable around the support shaft, and is coupled to the anvil contact portion; and a detection unit that detects a displacement of rotation of the interlocking portion.