CNC Tool Holder Balance Correction for High-Speed Vibration
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Solution Overview
Problem
In CNC machining, high-speed rotation of tool holders often results in transverse vibrations due to imbalance, reducing machining accuracy, and existing methods fail to effectively detect and correct dynamic balance issues in rotary bodies.
Innovation Solution
A numerical control tool holder dynamic balance detection and correction device comprising a detection assembly and a machining correction assembly, which includes an imitation CNC machine tool spindle with a dynamic balance measuring instrument and a machining head capable of forming correction holes on the tool holder's peripheral surface to minimize unbalance, using a ball drill bit with calculated drilling depth and angle to achieve balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed rotation is used for machining, then productivity is improved, but transverse vibration occurs due to imbalance reducing machining precision
Solution Approach 1:
The patent applies preliminary action by detecting the unbalance amount of the tool holder before actual machining and pre-adjusting the correction amount based on the detected values. The correction holes are positioned and sized in advance to compensate for the unbalance, ensuring that the tool holder achieves proper balance before high-speed machining begins, thus eliminating vibrations that would otherwise reduce machining accuracy.
2Manufacturing precision
If dynamic balance detection and correction is implemented, then machining accuracy is improved, but device complexity increases
Solution Approach 1:
The patent merges the dynamic balance detection function and the correction hole machining function into a single integrated device. The detection assembly with rotating sensors measures unbalance characteristics, while the machining assembly with positioning mechanisms and drill tools corrects the unbalance by creating correction holes. This integration eliminates the need for separate detection and correction equipment, reducing overall system complexity while maintaining high machining accuracy.
3Reliability
If correction holes are machined on the tool holder, then unbalance is reduced, but the tool holder structure is modified
Solution Approach 1:
The patent applies local quality by creating correction holes at specific locations on the tool holder's outer peripheral surface rather than modifying the entire structure. The correction holes are positioned based on the detected unbalance characteristics, with specific depths and orientations tailored to compensate for the identified imbalances. This localized modification approach maintains the overall structural integrity of the tool holder while achieving the desired dynamic balance improvement.
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 solution effectively reduces unbalance in rotary bodies, minimizing transverse vibrations during high-speed rotation and enhancing machining accuracy by accurately detecting and correcting imbalance through the formation of strategically placed correction holes.
Implementation Method 1
the dynamic balance measuring instrument is capable of measuring the amount of unbalance of the numerical control tool holder when the spindle drives the numerical control tool holder to rotate
Implementation Method 2
The annular magnetic strip and the magnetic scale are configured for recording a real-time position of the tool holder
Data Source
AI summary
A rotary body dynamic balance detection and correction device, comprising a detection assembly and a machining correction assembly. The detection assembly is configured to detect the amount of unbalance of a rotary body. The machining correction assembly is configured to machine an outer peripheral face of the rotary body to form a correction hole, so that the value of the amount of unbalance of the machined rotary body does not exceed the value of a preset maximum amount of unbalance. The rotary body dynamic balance detection and correction device can effectively correct the amount of unbalance of the rotary body, reduce the degree of unbalance of the rotary body, and avoid excessive lateral vibration generated when the rotary body rotates at a high speed. A rotary body dynamic balance detection and correction method and a numerical control tool holder are also provided.