Inclined-Surface Cutting Insert for Hard-Material Chip Flow
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Solution Overview
Problem
Current cutting tools face challenges in enhancing chip discharge performance during the cutting process of high hardness materials.
Innovation Solution
A cutting insert design featuring a specific geometry with inclined surfaces and ridgelines, including a first inclined surface located further from the central axis than a straight line connecting key surface features, which enhances durability and reduces resistance during cutting, thereby improving chip discharge and machining accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional cutting tool geometry is used, then the structure is simple and easy to manufacture, but the chip discharge performance is insufficient
Solution Approach 1:
The cutting insert is divided into multiple functional surfaces (first surface, second surface, third surface, inclined surface) with distinct geometric features (first ridgeline, second ridgeline, first side). This segmentation allows each surface to perform a specific function in chip formation and discharge, improving overall chip discharge performance while maintaining manufacturability through standardized geometric elements
Solution Approach 2:
The patent introduces a three-dimensional geometric configuration with an inclined surface that extends away from the central axis, creating additional spatial dimensions for chip discharge. The first inclined surface located more away from the central axis than the first straight line provides a multi-level chip discharge path, transforming a two-dimensional cutting face into a three-dimensional chip management system
2Manufacturing precision
If the cutting insert has high durability and reduced resistance, then machining accuracy improves, but the geometric complexity increases
Solution Approach 1:
Different surfaces of the cutting insert are designed with specific local geometric qualities optimized for their functions. The inclined surface has a specific angle and position relative to the central axis to reduce resistance and improve chip discharge, while the ridgelines have specific profiles to enhance durability. This localized optimization achieves high machining accuracy without requiring complex overall geometry
Solution Approach 2:
The cutting insert employs asymmetric geometric configuration where the first inclined surface is positioned more away from the central axis than the first straight line connecting key features. This asymmetric arrangement creates optimal chip flow paths and reduces resistance during cutting, improving machining accuracy while the symmetry in the base structure maintains manufacturing simplicity
Data Source
AI summary
A cutting insert may include a first surface including a corner and a first side, a second surface, a third surface, an inclined surface located between the first surface and the third surface, a first ridgeline located on an intersection of the inclined surface and the first surface, and a second ridgeline located on an intersection of the inclined surface and the third surface. An imaginary straight line passing through a center of the first surface and a center of the second surface may be a central axis. In a cross section which is parallel to the central axis and is orthogonal to the first side, an imaginary straight line connecting the first ridgeline and the second ridge line may be a first straight line, and the inclined surface may include a first inclined surface located more away from the central axis than the first straight line.