Coolant Through-Hole Cutting Insert for Edge Cooling and Chip Discharge
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Solution Overview
Problem
Existing cutting inserts have insufficient cooling effects for the cutting edge, which can lead to reduced durability and machining efficiency during machining processes.
Innovation Solution
A cutting insert design featuring three cutting edges with first through holes that extend from the end surface towards the first end, where the first opening is positioned in the rear of the second opening in the rotational direction, facilitating improved coolant flow and distribution to enhance cooling efficiency and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a through hole is provided in the cutting insert for coolant flow, then cooling effect is improved, but chip discharge ability deteriorates
Solution Approach 1:
The through hole is divided into multiple segments along its length, with different cross-sectional shapes and positions. The hole includes a first section with a first cross-sectional shape and a second section with a second cross-sectional shape, allowing different functions in different zones to simultaneously achieve cooling and chip discharge
Solution Approach 2:
Different sections of the through hole have different local properties: the first section has a shape optimized for coolant flow and cooling, while the second section has a shape optimized for chip discharge. This local differentiation allows the single through hole to perform multiple functions effectively
2Object-generated harmful factors
If the first opening is positioned in the front of the second opening in rotational direction, then chip discharge is improved, but cooling efficiency deteriorates
Solution Approach 1:
The solution moves from a simple linear positioning problem to a three-dimensional spatial configuration. The through hole is positioned and oriented at specific angles relative to the cutting edge, with its axis forming a predetermined angle with the rotational axis. This dimensional approach allows both openings to be positioned optimally for their respective functions
Solution Approach 2:
The through hole configuration is asymmetric relative to the cutting insert geometry. The hole is positioned offset from the rotational axis and oriented at specific asymmetric angles, allowing the first opening to face the cutting edge for cooling while the second opening is positioned for chip discharge without interfering with each other
3Temperature
If multiple through holes are provided for improved cooling, then cooling efficiency is improved, but device complexity increases
Solution Approach 1:
The single through hole is designed to perform multiple functions: it serves as a coolant passage, a chip discharge path, and a structural element. By making the through hole multi-functional with varying cross-sections and strategic positioning, the need for multiple separate through holes is eliminated, reducing complexity while maintaining cooling efficiency
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 achieves high cooling efficiency and durability for the cutting edge, allowing for effective chip discharge and maintaining strength, thereby improving machining performance.
Implementation Method 1
A coolant can flow through the through hole
Data Source
AI summary
An insert includes a cutting portion and a shaft portion. The cutting portion includes: a cutting edge that is located on a side of a first end; an end surface that is located on a side of the side of a second end; and a first through hole extending from the end surface toward the first end. The first through hole includes: a first opening that is located on the side of the first end; and a second opening located on the side of the second end. The first opening is positioned in the rear of the second opening in a rotational direction of the rotational axis.