Coolant Nozzle Structure for Cutting Inserts Under High-Pressure Flow
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Solution Overview
Problem
Conventional cutting tools with coolant flow channels complicate manufacturing and weaken the cutting insert, while existing methods for delivering coolant to cutting edges often interfere with the strength of the insert.
Innovation Solution
A cutting tool design featuring a nozzle with internal coolant channels and a single through hole for fastening, using an L-shaped locking member for clamping and a removable nozzle for turning applications, which allows for efficient coolant delivery without compromising the strength of the cutting insert.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coolant flow channels are provided in the cutting insert, then coolant delivery to cutting edges is improved, but manufacturing complexity increases and strength decreases
Solution Approach 1:
The coolant delivery function is extracted from the cutting insert and relocated to a separate nozzle component. The nozzle contains all coolant flow channels and is positioned to deliver coolant to the cutting edges without requiring channels to be manufactured in the cutting insert itself, thereby simplifying insert manufacturing while maintaining effective coolant delivery.
Solution Approach 2:
A nozzle is introduced as an intermediary component between the coolant supply system and the cutting insert. This nozzle serves as a mediator that delivers coolant to the cutting edges without requiring direct integration into the insert structure, thus avoiding the manufacturing complexity and strength issues associated with embedding channels in the insert.
2Reliability
If coolant flow channels are provided in the cutting insert, then coolant delivery to cutting edges is improved, but structural strength is weakened
Solution Approach 1:
The coolant delivery function is extracted from the cutting insert structure and assigned to a separate nozzle. This eliminates the need to create channels within the insert, preserving the insert's structural integrity and strength while still achieving effective coolant delivery to the cutting edges through the external nozzle system.
3Reliability
If multiple fastening members are used to secure the nozzle and cutting insert, then fastening reliability is improved, but device complexity increases
Solution Approach 1:
The fastening of the nozzle and the cutting insert are merged into a single operation using one fastening member. This single fastening member simultaneously secures both components, eliminating the need for multiple separate fastening operations and reducing overall device complexity while maintaining adequate fastening reliability for the application.
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 design enhances coolant flow while maintaining the structural integrity of the cutting insert, improving tool life by reducing friction and cutting temperature through effective coolant supply, particularly with high-pressure coolant systems.
Implementation Method 1
directing a coolant to a cutting edge of the cutting insert for minimizing the heat accumulated due to the interaction of a cutting insert with a machined workpiece
Data Source
Figure 1A~1B
Figure 1C~1E
Figure 1F~1K
AI summary
The present invention relates to a tool comprising a holder body (2"), a cutting insert (5") and a nozzle (10"), said nozzle (10") having a single through hole (11 ") for a fastening member (12"), said nozzle having a forward end (13"), a rear end (14") and a bottom face (15"), said through hole extending between the bottom face and an opposite top face (16"), at least one internal coolant channel (17") being provided in the nozzle and extending from a first opening (18") to a second opening (19"), said first opening connecting to a coolant supply conduit in the holder body, said second opening serving as exit for the coolant at the forward end. The at least one coolant channel (17") and the first opening (18") are spaced from the through hole (11 ").