Rotary Tool Balance and Runout Correction Using In-Rotation Imaging
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Solution Overview
Problem
Current systems for adjusting the mass balance and runout of rotary tools, particularly at high speeds, face challenges in achieving precise adjustments, which can lead to reduced machining precision in precision molds such as optical lenses.
Innovation Solution
A system comprising a rotary tool attached to a tool holder with a balance determining device for mass balance adjustment and a runout determining device for runout amount adjustment, utilizing an image sensor and control section for high-speed imaging, allowing for separate and precise adjustments of mass balance and runout during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a rotary tool is rotated at high speed for mirror finishing, then productivity is improved, but measurement precision of mass balance and runout amount deteriorates
Solution Approach 1:
The balance determining device and runout determining device perform measurements before the high-speed mirror finishing operation. The mass balance is determined by detecting outer circumference position data during rotation, and the runout amount is determined by detecting shape data during rotation, both before the actual precision machining begins. This allows adjustments to be made in advance, ensuring that when high-speed finishing occurs, the tool is already optimized for precision work.
Solution Approach 2:
The patent replaces traditional mechanical balancing and runout measurement methods with detection-based systems. The balance determining device uses outer circumference position data detection to determine mass balance, while the runout determining device uses shape data detection to determine runout amount. These detection-based systems can operate effectively during rotation without requiring the tool to be stationary or slowed down, enabling measurements even during high-speed rotation conditions.
2Manufacturing precision
If separate adjustment mechanisms for mass balance and runout are implemented, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent combines the balance determining device and runout determining device into a single integrated system that operates during rotation. Both determination functions are performed using detection mechanisms that work simultaneously during the rotation of the rotary tool, rather than requiring separate stationary measurement and adjustment systems. This merging reduces overall system complexity while maintaining the ability to make precise adjustments to both mass balance and runout amount.
Solution Approach 2:
The system performs both balance determination and runout determination during the rotation of the rotary tool, rather than requiring the tool to be stationary. The balance determining device detects outer circumference position data during rotation, and the runout determining device detects shape data during rotation. This dynamic measurement approach eliminates the need for complex stationary measurement fixtures and allows adjustments to be made in the actual working condition of rotation.
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 easy and precise adjustments of mass balance and runout amounts, improving machining precision of workpieces, especially during high-speed operations like mirror finishing of precision molds.
Implementation Method 1
an image sensor for imaging the rotary tool
Data Source
AI summary
A balance and runout amount adjustment system for a rotary tool includes a rotary tool constituted of a tool holder mounted on a spindle, a balance determining device configured to obtain outer circumference position data of the rotary tool and to determine a mass balance of the rotary tool based on the outer circumference position data obtained, in the course of rotation of the rotary tool and a runout determining device configured to obtain shape data of the rotary tool and to determine a runout amount of the rotary tool based on the shape data obtained, in the course of rotation of the rotary tool. The rotary tool is configured to be capable of adjustment of the mass balance based on the result of the determination made by the balance determining device and capable also of adjustment of the runout amount based on the result of the determination made by the runout determining device.