Optical Tool Detector Layout for Accurate CNC Thermal Compensation
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Solution Overview
Problem
Conventional tool detectors lack repeatability, accuracy, stability, and scalability, require frequent maintenance, and consume excessive power, making them inefficient for measuring tool wear and damage during rotation.
Innovation Solution
A tool detector with a right-angle triangular base and automatic controller, utilizing a main light ray and reflected light ray for precise measurement, featuring a quadrant detector arranged diagonally and an automatic controller that converts orthogonal projections into spatial coordinates for accurate thermal variable measurement, reducing power consumption and maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional tool detectors are used for measuring tool wear and damage, then measurement function is provided, but repeatability, accuracy, and stability are insufficient
Solution Approach 1:
The detector is divided into four independent quadrants that can be arranged diagonally, with each quadrant independently detecting light intensity. This segmentation allows for more precise measurement of tool wear and damage by comparing signals across multiple quadrants, improving both accuracy and repeatability
Solution Approach 2:
The patent transitions from conventional linear detector arrangements to a two-dimensional diagonal quadrant arrangement. The quadrants are positioned at angles to each other, creating a multi-dimensional detection space that enhances measurement accuracy and stability while providing better repeatability through geometric symmetry
2Productivity
If conventional tool detectors are used, then tool measurement is possible, but power consumption is excessive and maintenance frequency is high
Solution Approach 1:
The detector uses periodic pulsed light signals instead of continuous illumination, reducing power consumption while maintaining measurement efficiency. The quadrants detect light intensity during specific time intervals, allowing the system to operate with lower average power while achieving the same productivity
Solution Approach 2:
The patent replaces complex mechanical adjustment mechanisms with an optical system based on diagonal quadrant arrangement. This substitution eliminates mechanical wear and reduces maintenance needs while improving measurement efficiency through direct optical detection
3Ease of operation
If conventional detector arrangements are used, then basic detection is achieved, but adjustment and correction are difficult
Solution Approach 1:
The patent uses a symmetric diagonal arrangement of quadrants that inherently compensates for misalignments. The symmetric geometry provides self-correcting properties, making adjustment easier while reducing the complexity of calibration procedures compared to asymmetric conventional arrangements
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 tool detector achieves higher efficiency, accuracy, and stability, with reduced power usage and maintenance, enabling precise measurement and compensation of thermal variables in CNC machine tools, improving tool length and radius measurement and wear detection.
Implementation Method 1
a main light ray is emitted from a light source disposed on the first angular position to a plane mirror arranged at the second angular position. Thus a reflected light ray is generated due to the plane mirror
Data Source
AI summary
A tool detector including a right-angle triangular base and an automatic controller is revealed. A light source of the right-angle triangular base emits a main light ray to a plane mirror to generate a reflected light ray which is incident to a quadrant detector to create a light receiving area. The automatic controller is for measuring a tool length and a tool radius. A control device of a computer numerical control machine tool sets up a standard value by a standard bar and drives an unfinished tool and a processed tool to set up an original value set and a measured value set. The automatic controller performs an error analysis on the original and measured value sets to get a relative difference of a tool length and radius of the processed tool for measuring the tool length and radius and compensation of thermal variables of the CNC machine tool.