Self-Balancing Tool Holder Ring for Dynamic Machining Accuracy
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Solution Overview
Problem
Existing machining tools face challenges in achieving rotational balance, particularly when combining a cutting tool and tool holder, which leads to imbalances that affect precision, bearing life, tool wear, and surface finish, especially as the tool wears or debris accumulates, and requires costly and time-consuming manual balancing procedures.
Innovation Solution
A self-balancing tool holder system utilizing a ring with suspended balls or weighted media and oil that dynamically adjusts to balance the tool holder and cutting tool, capable of accommodating changes in assembly, speed, and tool wear, by allowing the balls to freely move within the ring to offset imbalances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual balancing procedures are used to balance the cutting tool and tool holder, then initial balance is achieved, but the balance becomes invalid when tool wear or debris accumulation occurs, requiring frequent re-balancing
Solution Approach 1:
The patent applies the dynamics principle by replacing static balancing weights with dynamic elements (suspended balls) that can move freely within the balancing ring. These balls automatically adjust their positions in response to changes in the tool assembly's balance conditions, enabling continuous adaptation to tool wear and debris accumulation without manual intervention.
Solution Approach 2:
The self-balancing mechanism employs suspended balls that autonomously detect and correct imbalances through their own movement within the balancing ring. The system serves itself by automatically redistributing the balls to counteract imbalance forces, eliminating the need for external manual re-balancing operations.
2Reliability
If multiple suspended balls are used in the balancing ring, then dynamic balancing capability is improved, but device complexity increases
Solution Approach 1:
The balancing ring is segmented into multiple independent compartments, each containing a suspended ball. This segmentation allows each ball to independently respond to different imbalance conditions, enhancing the system's ability to handle complex imbalance scenarios while maintaining manageable complexity through modular design.
Solution Approach 2:
The system utilizes parameter changes by varying the number, size, and distribution of suspended balls within the balancing ring. By adjusting these parameters, the system can optimize its dynamic balancing capability for different tool assemblies and operating conditions, achieving high reliability without excessive complexity.
3Adaptability or versatility
If the cutting tool rotational position is changed, then different tools can be used, but the balance position changes requiring re-balancing
Solution Approach 1:
The dynamic balancing mechanism with suspended balls automatically adapts to changes in tool rotational position and tool interchangeability. As the tool assembly rotates or changes configuration, the suspended balls dynamically reposition themselves to maintain balance, ensuring continuous machining precision without requiring manual re-balancing for different tool positions or tool changes.
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 system provides continuous dynamic balancing, reducing tool wear, improving precision and surface finish, and eliminating the need for frequent manual balancing, thus enhancing machining accuracy and reducing operational costs and labor.
Implementation Method 1
a ring that contains a plurality of suspended balls, oil and weighted media and oil that dynamically balance the tool holder and a secured milling tool as well as the entire rotating assembly
Implementation Method 2
suspended balls, oil and weighted media and oil that dynamically balance the tool holder
Data Source
AI summary
Improvements in a self-balancing tool holder or material removal machine that allows for greater accuracy of material removal. The balancer is able to self-adjust, any changes in the assembly are automatically adjusted. The adjustment can account for tool wear, accumulation of debris on the tool and balancing at different speeds of rotation. The tool holder balancer can be a mechanical fastener, shrink fit or bonding to the tool holder or material removal machine. The balancer uses a plurality of balls or any form of movable weight in the ring to provide the balance. The plurality of balls or media can freely move around the inside of the ring to offset any imbalance. The balls roll or spin to unique positions to provide a dynamic balance. The number and size of balls or weighted media is selected based upon the maximum amount of dynamic balancing that is required.