Turning Tool Coolant Outlet Placement for Insert Seat Deformation

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Solution Overview

Problem

Existing turning tools face challenges in longevity during long-time cuts, particularly in longitudinal turning of metal workpieces exceeding 300 mm, due to risks of plastic deformation and increased temperature-related tool body deformation.

Innovation Solution

The turning tool design features a coolant channel outlet that opens into a void between the side surface of the turning insert and the first surface of the insert seat, reducing the risk of deformation by directing coolant streams effectively and maintaining lower temperatures, thereby extending tool life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the coolant channel outlet is positioned below the turning insert as in prior art, then the tool structure is simple, but the insert seat undergoes plastic deformation during long-time cuts

Engineering Contradiction:

Improvetool durabilityVSAvoidinsert seat strength

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The coolant channel outlet is repositioned from a vertical position below the turning insert to a horizontal position at the side of the insert seat, opening into the void between the turning insert and the first surface. This spatial reconfiguration changes the coolant delivery dimension from bottom-up to side-access, allowing effective cooling without compromising insert seat structural integrity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The coolant channel outlet is specifically positioned to target the void region between the turning insert and the first surface of the insert seat. This localized coolant delivery focuses cooling effectiveness precisely where heat accumulation occurs at the insert-seat interface, while leaving the main insert seat structure intact and strong.

Inventive Principle:

Principle #3Local quality

2Temperature

If the coolant channel outlet opens into the void between the turning insert and insert seat, then the temperature of the insert seat is reduced, but the device complexity increases

Engineering Contradiction:

Improveinsert seat temperatureVSAvoidcoolant channel configuration

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The coolant channel outlet serves multiple functions simultaneously: it delivers coolant to cool the turning insert, cools the insert seat through the void region, and does so using the existing coolant channel infrastructure without requiring separate cooling systems. This multi-functionality achieves effective temperature control without proportionally increasing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The void space between the turning insert and insert seat, which is an inherent feature of the tool geometry, is utilized as a natural coolant passage. The coolant flows through this existing void without requiring additional drilled holes or complex channel configurations, allowing the structure to cool itself using its own geometric features.

Inventive Principle:

Principle #25Self-service

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

This design enhances the tool's durability and longevity by reducing the risk of deformation and wear, allowing for longer usage in longitudinal turning operations, especially when machining metal workpieces with extended lengths.

Implementation Method 1

the tool body comprising a coolant channel, the coolant channel extends between a coolant channel inlet and a coolant channel outlet

Methodology Applied

Scientific EffectFluid flow:

Implementation Method 2

the coolant channel outlet opens into a void between the side surface of the turning insert (3) and the first surface of the side surface of the insert seat... the temperature is of the insert seat and especially the temperature of the contact surface

Methodology Applied

Scientific EffectCooling: Cooling

Data Source

PatentUS11590580B2Turning tool for metal cutting comprising a coolant channel

Publication Date: 2023.02.28 SANDVIK COROMANT

AI summary

A turning tool includes a tool body and a turning insert, and an insert seat in which the turning insert is mounted. The insert seat includes a bottom surface and a side surface, the side surface having a first surface and a second surface. The first surface includes a contact surface, wherein the contact surface is in contact with a portion of the side surface of the turning insert. The tool body includes a coolant channel, which extends between a coolant channel inlet and a coolant channel outlet opening into a void between the side surface of the turning insert and the first surface of the side surface of the insert seat.