Cutting Tool Holder With Internal Coolant Paths Near the Insert
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Solution Overview
Problem
Existing cutting tools face challenges in efficiently supplying coolant to the machining location of a workpiece, particularly due to difficulties in positioning discharge ports close to the cutting insert, which affects cooling and lubrication, and requires external coolant supply.
Innovation Solution
A holder with integrated coolant flow paths in the mounting parts that allow direct communication with the cutting insert's inner flow path, enabling smooth coolant supply and lubrication, and allows for interchangeable cartridges to reduce tool exchange time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If coolant is supplied from the outside to a machining location, then cooling and lubrication can be achieved, but the discharge port cannot be positioned close to the cutting insert, reducing cooling efficiency
Solution Approach 1:
The patent implements nested flow paths where the holder coolant flow path and cartridge inner flow path are concentrically arranged. The cartridge is positioned within the holder, and its inner flow path is nested within the holder's coolant flow path structure, allowing coolant to be delivered close to the cutting insert through this nested configuration.
Solution Approach 2:
The patent transitions from external coolant supply to internal coolant supply by creating flow paths within the holder and cartridge structure. The coolant flow path extends through the holder wall and connects to the cartridge's inner flow path, delivering coolant from the inside rather than from the outside, thus positioning the discharge port close to the cutting insert.
2Productivity
If multiple cartridges are mounted on a holder, then tool exchange time is reduced, but the structure becomes more complex
Solution Approach 1:
The holder is designed with multiple mounting parts that can each accommodate different types of cartridges. The holder structure integrates multiple functions: it provides mechanical support, contains coolant flow paths that serve all mounting positions, and enables quick cartridge replacement. This multi-functional design allows different cutting inserts to be mounted on a single holder.
Solution Approach 2:
The holder is divided into multiple independent mounting parts, each capable of holding a cartridge. This segmentation allows individual cartridges to be replaced without affecting other mounting positions, enabling quick tool exchange while maintaining a modular structure that manages complexity through standardization.
3Reliability
If coolant flow paths are opened in mounting parts, then coolant can be supplied close to the cutting insert, but the holder structure becomes more complex
Solution Approach 1:
The patent merges the holder's coolant flow path with the cartridge's inner flow path by opening a flow path through the holder wall at the mounting part. This integration allows the holder and cartridge to work together as a unified coolant delivery system, ensuring reliable coolant supply close to the cutting insert while avoiding the need for separate, complex cooling systems.
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 solution ensures effective cooling and lubrication of machining locations, prolongs tool life, and reduces non-cutting periods by facilitating efficient coolant distribution and enabling quick replacement of damaged cartridges.
Implementation Method 1
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
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
Data Source
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AI summary
A holder (20), a cutting tool (10) and a machining method that allow coolant to be smoothly supplied to a machining location of a workpiece are provided. A holder (20) for a cutting tool comprises: a plurality of mounting parts (22a, 22b, 22c) each of which is mounted with a cartridge (60A, 60B, 60C) that holds a cutting insert (61A, 61B, 61C); and a coolant flow path (41a, 41b, 41c, 42a, 42b, 42c) that is opened in each mounting part.