Tool Coupling Imbalance Compensation via Two-Plane Material Removal

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Solution Overview

Problem

Existing methods for balancing tool couplings, such as using compensating bores or eccentric discs, are insufficient in eliminating dynamic imbalance at high speeds, leading to reduced tool life and surface quality issues.

Innovation Solution

Compensating imbalance by removing material in two planes at an axial distance apart, specifically addressing both static and dynamic imbalances through strategic placement of bores and slots in the tool coupling, with optional use of low-density inserts for enhanced effectiveness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If material removal measures are taken in the plane of imbalance generation, then static imbalance is compensated, but dynamic imbalance increases with increasing speeds

Engineering Contradiction:

Improvestatic imbalance compensationVSAvoiddynamic imbalance at high speeds

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent transitions from single-plane material removal to two-plane material removal, adding the axial dimension to the compensation approach. By distributing compensation measures across two axial planes, the solution addresses both static and dynamic imbalance components that cannot be resolved by single-plane methods alone.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The compensation measures are segmented into two distinct axial planes rather than concentrated in one plane. This segmentation allows independent optimization of static and dynamic balance compensation, with each plane contributing to different aspects of imbalance correction.

Inventive Principle:

Principle #1Segmentation

2Productivity

If higher speeds are used in machine tools, then cutting efficiency increases, but adverse effects of imbalance increase

Engineering Contradiction:

Improvecutting efficiencyVSAvoidadverse effects of imbalance

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary anti-action by pre-compensating for dynamic imbalance through two-plane material removal before the tool coupling operates at high speeds. This preventive measure counteracts the adverse effects of imbalance before they can manifest during high-speed operation, enabling sustained high-speed cutting without the negative consequences.

Inventive Principle:

Principle #9Preliminary anti-action

3Manufacturing precision

If compensating measures are taken at an axial distance from the imbalance source, then static imbalance is compensated, but dynamic imbalance compensation is insufficient

Engineering Contradiction:

Improvestatic imbalance compensationVSAvoiddynamic imbalance

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent utilizes the axial dimension by implementing compensation measures in two separate axial planes. This dimensional approach allows the system to address both static and dynamic imbalance simultaneously, overcoming the limitation of single-plane compensation that can only address static imbalance effectively.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS8425164B2Method and device for balancing a tool coupling

Publication Date: 2013.04.23 REGOFIX

AI summary

For balancing a tool coupling, the compensating measures (removal of material, use of other material) are carried out in two planes an axial distance apart. Tool couplings are provided with recesses for imbalance compensation in two planes an axial distance apart.