Cutting Tool Holder With Internal Coolant Paths Near Inserts

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Solution Overview

Problem

Existing cutting tools face challenges in efficiently supplying coolant to machining locations due to difficulties in positioning discharge ports close to cutting inserts, leading to inadequate cooling and lubrication, and requiring external coolant supply.

Innovation Solution

A holder with integrated coolant flow paths in mounting parts that allow direct communication with cartridges holding cutting inserts, enabling smooth coolant supply to machining locations, and an adjustment mechanism to control coolant flow rates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If coolant is supplied from the outside to a machining location, then cooling and lubrication can be achieved, but the coolant supply is insufficient and tool life is reduced

Engineering Contradiction:
Improvetool lifeVSAvoidcoolant supply adequacy
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The coolant flow path is integrated within the holder structure itself, with the holder acting as a container that houses the coolant delivery system. The holder's body forms the coolant passage, eliminating the need for external coolant supply mechanisms and enabling direct coolant delivery to the cutting insert's discharge port, thereby improving cooling efficiency and extending tool life

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The holder serves as an intermediary component that receives coolant from the external supply and transports it through its internal flow path to the cutting insert's discharge port. This intermediary structure enables precise coolant delivery to the machining location, resolving the insufficiency of external coolant supply

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a discharge port is positioned close to the cutting insert, then coolant can be supplied effectively, but the holder structure becomes more complex

Engineering Contradiction:
Improvecoolant supply effectivenessVSAvoidholder structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The holder is designed to perform multiple functions: it holds the cutting insert, provides structural support, and serves as the coolant delivery system through its integrated flow path. By combining these functions into a single component, the design avoids additional complexity while achieving effective coolant supply to the discharge port located close to the cutting insert

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The coolant flow path is merged with the holder's structural body rather than being a separate component. This integration combines the holder's mechanical support function with the coolant transport function, eliminating the need for additional coolant channels or attachments that would increase structural complexity

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If multiple cartridges are mounted on the holder, then productivity increases, but the holder structure becomes more complex

Engineering Contradiction:
Improvemachining efficiencyVSAvoidholder structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The holder is divided into multiple mounting parts or stations, each capable of holding a cartridge with a cutting insert. This segmentation allows multiple cutting operations to be performed simultaneously or sequentially without requiring tool changes, thereby increasing productivity. The modular mounting structure accommodates multiple cartridges while maintaining a relatively simple overall holder design

Inventive Principle:
Principle #1Segmentation

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

Enhances cooling and lubrication of machining locations, prolongs tool life, reduces tool exchange periods, and allows for efficient replacement of damaged cartridges.

Implementation Method 1

a coolant flow path that is opened in at least one mounting part

Methodology Applied
Scientific EffectFluid flow:

Implementation Method 2

coolant can be smoothly supplied to a machining location of a workpiece with the cutting insert via the inner flow path, whereby such machining location can be cooled and lubricated

Methodology Applied
Scientific EffectCooling: Cooling

Implementation Method 3

such machining location can be cooled and lubricated

Methodology Applied
Scientific EffectLubrication: Lubrication

Data Source

PatentUS20260034586A1Holder, cutting tool and machining method
Publication Date: 2026.02.05 TUNGALOY CORP
  • US20260034586A1 patent drawing
  • US20260034586A1 patent drawing
  • US20260034586A1 patent drawing

AI summary

A holder, a cutting tool and a machining method that allow coolant to be smoothly supplied to a machining location of a workpiece are provided. A holder for a cutting tool comprises: a plurality of mounting parts each of which is mounted with a cartridge that holds a cutting insert; and a coolant flow path that is opened in each mounting part.