Machine Tool Position Sensor Correction via Reference Sphere Measurement
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Solution Overview
Problem
Current methods for measuring correction values of position measurement sensors in machine tools require manual intervention and separate processes for length and diameter corrections, consuming time and labor.
Innovation Solution
A method and system that automatically measure length and diameter correction values using a tool sensor and a reference sphere, where the system includes units for acquiring and calculating sensing positions, relative positions, and correction values, allowing for automated measurement of position measurement sensors without manual labor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement method using reference tool and block gauge is used, then measurement precision can be maintained, but time consumption and labor requirements increase significantly
Solution Approach 1:
The patent replaces manual mechanical measurement operations with an automated measurement system that uses a measurement probe and control unit. The system automatically moves the measurement probe to predetermined positions and calculates correction values without manual intervention, thereby reducing time consumption while maintaining measurement precision through systematic automated procedures
Solution Approach 2:
The patent changes the measurement parameters by using multiple predetermined positions along the tool axis and radial directions. By measuring at multiple positions and synthesizing the results, the system achieves accurate correction values automatically, resolving the contradiction between precision and time efficiency
2Measurement precision
If separate processes are used for length correction and diameter correction, then each correction can be performed accurately, but the overall process complexity and time requirement increase
Solution Approach 1:
The patent merges the length correction and diameter correction processes into a single integrated measurement procedure. The measurement probe collects data at multiple positions that simultaneously provide information for both length and diameter corrections, and the control unit processes this data to generate both correction values in one operation, thereby reducing process complexity while maintaining accuracy
Solution Approach 2:
The measurement system is designed with multi-functionality to perform both length and diameter corrections using the same measurement probe and data acquisition process. The system universally handles different correction types through a unified measurement and calculation framework, eliminating the need for separate specialized processes
Data Source
AI summary
A correction value measurement method includes, measuring a position of a reference sphere, calculating a relative position of the reference sphere with respect to a sensing position from the position of the reference sphere, a length of the position measurement sensor, and a length of the reference tool. The method further includes acquiring a reference tool position as a distal end position of the reference tool using, calculating a length direction correction value of the position measurement sensor from the reference tool position, the position of the reference sphere, the relative position, and a length of the reference tool, and measuring the position of the reference sphere to calculate a radial direction correction value of the position measurement sensor.