Surface Texture Measuring Instrument Automatic Positioning
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Solution Overview
Problem
Existing surface texture measuring instruments face challenges with large-scale configuration and increased costs due to the need for complex systems for automatic positioning, and small-size instruments struggle with manual leveling, leading to inefficiencies and potential damage during measurements.
Innovation Solution
A surface texture measuring instrument with a compact configuration that includes a detector, a movement mechanism, an elevation inclination adjuster, and a controller that automates the adjustment of the workpiece's elevation position and inclination angle, enabling fully automatic positioning and measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a combination of table inclination device and electric column device is used for automatic positioning, then automatic positioning capability is improved, but device complexity and system scale increase
Solution Approach 1:
The patent combines the table inclination device and electric column device into a single integrated elevation inclination adjuster. This adjuster simultaneously performs both elevation adjustment (Z-axis movement) and inclination angle adjustment (auto-leveling) functions, reducing the number of separate components while maintaining full automatic positioning capability.
Solution Approach 2:
The elevation inclination adjuster is designed as a multi-functional device that can perform multiple operations: elevating the table, inclining the table, and automatically positioning the workpiece. This single device replaces what would traditionally require multiple specialized devices, simplifying the overall system configuration.
2Volume of moving object
If manual leveling check is used in small-size instruments, then device size is reduced, but measurement time increases and repeatability deteriorates
Solution Approach 1:
The system performs automatic self-positioning through the elevation inclination adjuster, which automatically adjusts the table elevation and inclination angle based on workpiece detection. This eliminates the need for manual leveling operations, enabling small-size instruments to achieve both compact dimensions and high measurement efficiency with improved repeatability.
Solution Approach 2:
The computing unit rapidly calculates the required elevation and inclination adjustments based on preliminary measurement data, enabling quick automatic positioning. This accelerated computation and adjustment process eliminates time-consuming manual operations while maintaining measurement accuracy.
3Device complexity
If manual leveling is used for doughnut-shaped workpieces, then device complexity is reduced, but risk of stylus damage increases
Solution Approach 1:
The system uses feedback from the detector to automatically adjust table elevation and inclination. The computing unit processes detection signals to determine optimal positioning parameters, and the elevation inclination adjuster implements these adjustments automatically. This closed-loop control ensures the stylus maintains proper contact with the workpiece surface without manual intervention, preventing damage during measurement of complex geometries like doughnut-shaped workpieces.
Data Source
AI summary
A surface texture measuring instrument includes: a measuring device that includes a detector for detecting surface texture of a workpiece and an X-axis movement mechanism for moving the detector in a measurement direction; an elevation inclination adjuster capable of adjusting an elevation position and an inclination angle of a table on which the measuring device is mounted; a stage on which the workpiece is mounted; and a controller that controls the measuring device and the elevation inclination adjuster. The controller includes: a measurement controller that controls the X-axis movement mechanism to conduct a preliminary measurement and main measurement of the workpiece; a computing unit that acquires a result of the preliminary measurement from the detector and obtains an inclination angle of the workpiece at which the workpiece is inclined to the measurement direction; and a positioning controller for adjusting the inclination angle of the table based on the obtained inclination angle.