Cutting Insert Geometry for Stable Seating and Chip Disposal
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Solution Overview
Problem
Existing cutting inserts face instability in chip disposal during cutting processes, particularly in chamfering processes, due to inadequate seating stability and chip discharge performance.
Innovation Solution
The cutting insert features a rhombus-shaped upper surface with specific surface configurations, including first and second surfaces, through holes, and strategically positioned cutting edges, which provide enhanced seating stability and efficient chip disposal by optimizing the geometry of the cutting edges and surfaces to ensure consistent chip discharge and reduced contact pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the flat surface is arranged toward the midpoint of the side edge part to provide seating stability, then seating stability is improved, but chip disposal becomes unstable
Solution Approach 1:
The invention applies different surface configurations to different regions of the upper surface. The first surface is positioned closer to the cutting edge with specific geometric features optimized for chip disposal, while the second surface is positioned farther away and optimized for seating stability. This local differentiation allows each region to fulfill its specific function without compromising the other.
Solution Approach 2:
The upper surface is divided into multiple distinct surfaces (first surface, second surface, third surface, fourth surface) with different geometric characteristics and positions. Each surface segment serves a specific purpose: some segments facilitate chip disposal while others provide seating stability, resolving the contradiction by distributing functions across segmented regions rather than relying on a single flat surface.
2Productivity
If the cutting edge geometry is optimized for cutting performance, then cutting performance is improved, but chip disposal performance deteriorates
Solution Approach 1:
The invention extends the solution from the traditional two-dimensional cutting edge geometry to three-dimensional surface configuration. By creating multiple surfaces at different heights and positions on the upper surface, the invention adds vertical and positional dimensions to chip disposal functionality, allowing chips to be guided away from the cutting zone through strategically positioned surface features.
Solution Approach 2:
Different surface regions are configured with specific geometric features tailored to their local functions. The first surface near the cutting edge includes features optimized for chip disposal, while other surfaces maintain configurations optimized for their respective functions, allowing simultaneous optimization of cutting performance and chip disposal.
Data Source
AI summary
A cutting insert includes an upper surface and upper edge. The upper surface includes a second side part, a first corner part, and a second corner part. The upper surface further includes a first surface and a second surface. The upper edge includes a first edge located at the first corner part, a second edge located at the second side part, and a third edge located at the second corner part. The second surface includes a first region extending toward the first corner part, and a second region extending toward the second corner part. A distance between the first region and the upper edge is smaller at a side of the second edge than at a side of the first edge. A distance between the second region and the upper edge is smaller at a side of the second edge than at a side of the third edge.