Cutting Insert Geometry for Chip Curling and Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting inserts face challenges in preventing chip curling and heat dissipation, leading to damage and reduced processing lifetime due to inadequate chip management and insufficient oil supply.
Innovation Solution
The cutting insert features a design with protrusion parts, concave grooves, and a unique upper surface structure that directs chip flow, enhances heat dissipation, and promotes chip curling, including a boss part for improved oil penetration and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the ridge is disposed at a position lower than the cutting edge, then the chip flow path is simplified, but the chip curling ability deteriorates and chip stretching occurs
Solution Approach 1:
The invention applies local quality by creating a specific geometric configuration where the nose R part land part is positioned higher than both the main cutting edge land part and the sub-cutting edge land part. This localized elevation at the nose R part creates a specific chip flow path that forces chips to curl properly without requiring a complex overall structure. The selective height variation at this critical location improves chip curling ability while maintaining overall structural simplicity.
2Device complexity
If the cutting edge is used without additional structures, then the device complexity is low, but the heat dissipation ability is insufficient
Solution Approach 1:
The invention uses local quality by creating elevated land parts at specific locations (main cutting edge land part, nose R part land part, and sub-cutting edge land part) rather than uniformly increasing the overall structure. The nose R part land part is specifically positioned higher to create a chip flow path that exposes chips to cutting oil flow, enhancing heat dissipation locally where it is most needed during the cutting process.
3Device complexity
If cutting oil supply is insufficient, then the structure is simpler, but the processing lifetime is reduced due to high temperature
Solution Approach 1:
The invention applies local quality by creating a specific geometric configuration where the elevated nose R part land part forces chips to flow along a path that exposes them to cutting oil. This localized geometric modification at the chip flow path creates better oil penetration and cooling without requiring a complex cutting oil supply system, thereby extending processing lifetime through improved thermal management.
Data Source
AI summary
A cutting insert according to one embodiment of the present invention comprises an upper surface, a lower surface, a lateral surface, a cutting edge, and a fastening hole, wherein the cutting edge includes a main cutting edge, a nose R part connected to the main cutting edge, and a sub-cutting edge connected to the nose R part, the upper surface includes a land part adjacent to the cutting edge, an inclined surface downwardly inclined from the land part, and an upper surface bottom part extending from the inclined surface, first and second protrusion parts are formed respectively, in which the first protrusion part is connected to a main cutting edge land part and formed on a main cutting edge inclined surface at a portion at which a nose R part inclined surface ends and the second protrusion part is connected to a sub-cutting edge land part and formed on a sub-cutting edge inclined surface at a portion at which the nose R part inclined surface ends, and no protrusion is present on the nose R part inclined surface.