Coolant Nozzle Layout for Stronger Cutting Inserts
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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 holder body with a pocket and a nozzle having internal coolant channels that connect to a coolant supply conduit, allowing for efficient coolant delivery to the cutting edge without compromising the insert's strength, using a single through hole for fastening and mirror symmetry for versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If coolant flow channels are provided in the cutting insert, then coolant delivery to the cutting edge is improved, but manufacturing complexity increases and the cutting insert strength is weakened
Solution Approach 1:
The cooling system is segmented into two separate components: the cutting insert and the nozzle. The coolant channels are provided in the nozzle rather than the cutting insert, allowing the insert to remain simple and easy to manufacture while still achieving effective coolant delivery to the cutting edge through the separate nozzle component.
Solution Approach 2:
A separate nozzle is introduced as an intermediary component between the coolant supply and the cutting insert. This nozzle contains the coolant channels and directs coolant to the cutting edge, eliminating the need for channels in the cutting insert itself while maintaining effective cooling.
2Temperature
If coolant flow channels are provided in the cutting insert, then coolant delivery to the cutting edge is improved, but the cutting insert strength is weakened
Solution Approach 1:
The cutting insert is separated from the cooling system functions, containing only the cutting edges without any coolant channels. The cooling function is assigned to a separate nozzle, preserving the structural integrity and strength of the cutting insert while still achieving effective coolant delivery to the cutting edge.
3Quantity of substance
If multiple coolant channels are provided in the nozzle, then coolant flow is increased, but the nozzle structure becomes more complex
Solution Approach 1:
The nozzle is designed with mirror symmetry about a plane containing its longitudinal axis, allowing a single nozzle design to serve multiple positions and orientations. This universal design enables the system to achieve increased coolant flow capability while maintaining structural simplicity through symmetry rather than complexity.
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 to the cutting edge, reducing manufacturing complexity and maintaining the insert's strength, leading to improved tool life and reduced cutting temperatures and forces due to effective chip removal and reduced friction.
Implementation Method 1
at least one internal coolant channel being provided in the nozzle and extending from a first opening to a second opening, 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
Implementation Method 2
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 "). The bottom face (15;15';15") of the nozzle comprises a guide device (23) such as a projection or recess adjacent to the forward end (13;13';13") to set the direction of the nozzle by having the guide device cooperating with a recess or projection on a cutting insert or clamping means. Use of a cutting insert is also disclosed.