Reverse-Tapered Cutting Insert Flow Path for Coolant Delivery
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Solution Overview
Problem
Existing cutting inserts face limitations in efficiently supplying coolant to the cutting edge during machining, despite having a flow path for coolant distribution, due to constraints in flow velocity and pressure.
Innovation Solution
The cutting insert is designed with a reverse-tapered flow path configuration, where the width of the flow path increases parallel to the first surface away from the surface, enhancing coolant discharge efficiency towards the cutting edge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional flow path is used in the cutting insert, then the structure is simple and easy to manufacture, but the coolant supply efficiency to the cutting edge is insufficient
Solution Approach 1:
The flow path is designed with a reverse taper configuration where the width increases from the first surface toward the second surface, opposite to the conventional tapered design. This inversion allows the flow path to expand as coolant moves through it, increasing flow velocity and pressure toward the cutting edge while maintaining manufacturability through standard molding techniques
Solution Approach 2:
The flow path geometry parameters are specifically optimized with a reverse taper angle between 5-15 degrees, and the width at the second surface is made 1.2-2.0 times wider than at the first surface. These parameter changes create sufficient flow velocity and pressure to deliver coolant effectively to the cutting edge without requiring complex additional structures
2Productivity
If the flow path width is increased to improve coolant flow, then coolant supply efficiency improves, but the structural strength of the cutting insert may be compromised
Solution Approach 1:
The reverse taper flow path creates localized expansion zones that concentrate coolant flow velocity and pressure precisely at the cutting edge region, while the overall insert structure maintains adequate thickness and strength. The flow path width ratio is controlled between 1.2-2.0 times to balance coolant delivery efficiency with structural integrity
Solution Approach 2:
The flow path utilizes the thickness dimension of the insert by extending from the first surface through to the second surface, creating a three-dimensional flow channel that improves coolant delivery without compromising the planar strength of the insert. The reverse taper configuration optimizes flow in the thickness direction while maintaining structural rigidity
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 allows for more efficient coolant supply to the cutting edge, improving durability and performance of the cutting insert.
Implementation Method 1
In a first cross section that passes through a central axis of the first flow path and is orthogonal to the first surface, a width of the first flow path in a direction parallel to the first surface increases as going away from the first surface
Data Source
AI summary
A cutting insert in an aspect of the present disclosure has a cutting part. The cutting part has a first surface, a second surface, a third surface located between the first surface and the second surface, and a flow path extending from the first surface toward the second surface. The flow path has an outflow port opening into the first surface, and a first flow path extending from the outflow port toward the second surface. In a first cross section that passes through a central axis of the first flow path and is orthogonal to the first surface, a width of the first flow path in a direction parallel to the first surface increases as going away from the first surface.