Coolant Ejection Port Layout for Indexable Cutting Inserts

Solution Overview

Problem

Existing cutting tools face complexity in ensuring that a coolant fluid reliably hits the cutting edge when the position of the cutting edge is changed, as existing mechanisms for adjusting the ejection direction of the coolant are cumbersome and complicate the tool's structure.

Innovation Solution

A cutting tool design featuring an ejecting portion with ejection ports configured to direct fluid towards an elongated region that includes the cutting edge, allowing the coolant to consistently reach the edge even when its position is altered, without the need for a separate direction-adjustment mechanism, by aligning ejection ports in a predetermined direction and ensuring they do not overlap with each other's ejection regions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a mechanism for adjusting the direction of the ejection port is provided to ensure the fluid hits the cutting edge when the cutting edge position changes, then the reliability of fluid delivery to the cutting edge is improved, but the device complexity increases

Engineering Contradiction:

Improvefluid delivery reliabilityVSAvoidtool structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The ejection port is divided into multiple segments arranged along an elongated direction. Each segment ejects fluid toward a different position within the elongated region. This segmentation allows the fluid to cover a extended area without requiring directional adjustment mechanisms, thus maintaining reliability while avoiding increased complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The ejection port is extended from a point-like structure to an elongated structure in a predetermined direction. This dimensional change transforms the fluid ejection from a single-point target to a line-shaped coverage area, allowing the cutting edge to move along this elongated region while continuously receiving fluid without requiring directional adjustment.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Measurement precision

If the ejection port is configured to eject fluid toward a pin point at the cutting edge, then the precision of fluid targeting is improved, but the adaptability to cutting edge position changes deteriorates

Engineering Contradiction:

Improvefluid targeting precisionVSAvoidadaptability to cutting edge position changes

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The ejection port is extended from a point-like structure to an elongated structure in a predetermined direction. This dimensional change transforms the fluid ejection from a single-point target to a line-shaped coverage area, allowing the cutting edge to move along this elongated region while continuously receiving fluid without requiring directional adjustment.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The elongated ejection port configuration serves multiple positions of the cutting edge simultaneously. Instead of being optimized for a single pin-point location, the ejection port is designed to cover a range of positions along the elongated direction, providing universal fluid delivery capability for various cutting edge positions within this region.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple ejection ports are aligned in a predetermined direction to cover the elongated region, then the adaptability to cutting edge position changes is improved, but the device complexity increases

Engineering Contradiction:

Improveadaptability to cutting edge position changesVSAvoidejection port configuration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The ejection port is divided into multiple segments arranged along an elongated direction. Each segment ejects fluid toward a different position within the elongated region. This segmentation allows the fluid to cover a extended area without requiring directional adjustment mechanisms, thus maintaining reliability while avoiding increased complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple ejection ports are integrated into a single elongated ejection structure. Instead of treating them as separate components requiring individual control, they are merged into one unified ejection system that naturally covers the elongated region, simplifying the overall configuration while maintaining adaptability.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP4309834A1Cutting tool

Publication Date: 2024.01.24 TUNGALOY CORP

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AI summary

A cutting tool which can cause a fluid to reliably hit a cutting edge is provided even with a simple configuration. A cutting tool includes a holder, a cutting insert having a cutting edge and mounted on the holder, and an ejecting portion which ejects a fluid from an ejection port toward the cutting edge. The ejection port is formed so as to eject the fluid toward a region including the cutting edge and extending in a predetermined direction.