Rotary Tool Holder Balance And Runout Adjustment Under Spindle Mounting
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Solution Overview
Problem
Existing rotary tools used in precision machining, such as for optical lenses, face challenges in achieving precise adjustments of mass balance and runout amount, especially at high speeds, which affect machining precision.
Innovation Solution
A system and method for adjusting the balance and runout of rotary tools using a tool holder equipped with screw holes for adjustable weights and an imaging device to determine and correct mass balance and runout amounts while mounted on a spindle, employing dividing and delayed imaging techniques for high-speed operations.
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 system performs preliminary determination of mass balance and runout amount before high-speed machining. The balance determining device and runout determining device measure these parameters at lower speeds or during setup, allowing adjustments to be made before the actual high-speed mirror finishing operation begins
Solution Approach 2:
The patent replaces traditional mechanical balancing and runout measurement methods with automated determination devices. The balance determining device uses sensors to detect vibration characteristics, while the runout determining device uses imaging or sensing technology to measure radial deviations, enabling precise measurements without requiring manual intervention during high-speed rotation
2Manufacturing precision
If adjustment devices are added to the rotary tool, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into the tool holder structure. The tool holder integrates weight assembly mechanisms for balance adjustment, screw members for runout adjustment, and mounting interfaces for determination devices. This merging approach allows precision adjustment capabilities to be added without requiring separate standalone devices, thereby limiting the increase in overall system complexity
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, improving machining precision by allowing adjustments under actual working conditions and reducing device space requirements.
Implementation Method 1
an image sensor configured to image the rotary tool; and a control section configured to execute imaging operation by the image sensor at every predetermined time
Data Source
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AI summary
A balance and runout amount adjustment system 100 for a rotary tool includes a rotary tool 11 constituted of a tool holder 10 mounted on a spindle 2, a balance determining device 20 configured to obtain outer circumference position data of the rotary tool 11 and to determine a mass balance of the rotary tool 11 based on the outer circumference position data obtained, in the course of rotation of the rotary tool 11 and a runout determining device 20 configured to obtain shape data of the rotary tool 11 and to determine a runout amount of the rotary tool 11 based on the shape data obtained, in the course of rotation of the rotary tool 11. The rotary tool 11 is configured to be capable of adjustment of the mass balance based on the result of the determination made by the balance determining device 20 and capable also of adjustment of the runout amount based on the result of the determination made by the runout determining device 20.