Cutting Apparatus Optical Sensor Dressing Grindstone Position
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Solution Overview
Problem
Cutting apparatus with high-speed rotating cutting blades face issues with tip wear, leading to reduced shape accuracy of cut workpieces, and existing rotary dressing devices struggle to adjust the cutting distance accurately due to difficulty in positioning the cutting blade relative to the dressing grindstone.
Innovation Solution
A cutting apparatus equipped with a chuck table, moving means for the spindle, rotary dressing means, and an optical sensor to detect the position and diameter of the dressing grindstone, allowing precise positioning of the cutting blade for a desired cutting distance, ensuring accurate dressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rotary dressing device is used to dress hard cutting blades, then the dressing effectiveness is improved, but the difficulty in adjusting the cutting distance increases
Solution Approach 1:
The patent replaces the mechanical measurement and adjustment system with an optical sensing system. The optical sensor detects the position of the dressing grindstone's outer periphery, and the control unit automatically calculates and adjusts the cutting distance, eliminating the need for manual mechanical measurement and adjustment.
Solution Approach 2:
The system performs self-adjustment by automatically detecting the grindstone's position and calculating the appropriate cutting distance. The control unit uses the detected position information to automatically position the cutting blade at the correct distance from the grindstone, enabling the system to self-regulate without manual intervention.
2Loss of substance
If the cutting blade is dressed by a stationary dressing board, then the positioning complexity increases, but the material removal amount becomes sufficient
Solution Approach 1:
The patent merges the dressing function with the existing chuck table structure. The rotary dressing device is integrated into the cutting apparatus, and the dressing operation is combined with the workpiece holding and cutting processes, eliminating the need for separate positioning mechanisms for a dedicated dressing board.
Solution Approach 2:
The patent transitions from a stationary dressing board to a rotary dressing grindstone that rotates at high speed. This dynamic approach allows the grindstone to engage and wear the cutting blade effectively, providing sufficient material removal while simplifying the overall positioning requirements through automated control.
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 consistent and efficient dressing of cutting blades, maintaining shape accuracy and extending the life of both the cutting blade and dressing grindstone by accurately controlling the cutting distance, even with hard cutting blades.
Implementation Method 1
an optical sensor for detecting the position of the outer periphery of the dressing grindstone
Data Source
AI summary
Disclosed herein is a cutting apparatus including a moving unit for moving a spindle to position a cutting blade, a rotary dressing mechanism for rotating a dressing grindstone on a rotational shaft parallel to the spindle, and an optical sensor for detecting the position of the outer periphery of the dressing grindstone. The cutting blade is positioned with respect to the rotary dressing mechanism depending on the position, detected by the optical sensor, of the outer periphery of the dressing grindstone, and the cutting blade is dressed by cutting into the dressing grindstone by a predetermined cutting distance.