Cutting Insert With Variable Honing Width For Edge Strength
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Solution Overview
Problem
Existing cutting inserts for milling processes have a chamfered part with a straight line shape, which provides high strength to the minor cutting edge but may result in insufficient strength for the major cutting edge, leading to potential performance issues during machining.
Innovation Solution
A cutting insert design featuring a first surface with a corner part and two sides, where the cutting edge includes a first cutting edge, a second cutting edge, and a third cutting edge, with the second cutting edge's honing width decreasing as it approaches the first cutting edge, enhancing the strength of the major cutting edge while maintaining the sharpness of the wiper cutting edge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a honing is provided on the cutting edge, then the strength of the cutting edge is enhanced, but the sharpness of the wiper cutting edge may be reduced
Solution Approach 1:
The honing is applied selectively to specific portions of the cutting edge (corner part and first side) while leaving the second side and portions near the second cutting edge without honing. This localized application ensures that strength is enhanced where needed while the wiper cutting edge maintains its sharpness for achieving fine surface finish.
Solution Approach 2:
The cutting edge is segmented into different functional zones: the corner part and first side receive honing for strength, while the second side remains sharp for wiper function. This segmentation allows each portion to optimize its performance for its specific function, resolving the contradiction between strength and sharpness.
Data Source
AI summary
A cutting insert of the present disclosure includes a first surface, a second surface, and a cutting edge. The first surface includes a corner part, and a first side and a second side each extending from the corner part. The second surface connects to the first surface. The cutting edge is located at a region where the first surface intersects with the second surface. The cutting edge includes a first cutting edge located at the first side, a second cutting edge located at the second side, and a third cutting edge located at the corner part. The first cutting edge and the third cutting edge are provided with a honing. A honing width of a side of the second cutting edge in the third cutting edge decreases as going away from the first cutting edge and then approaching the second cutting edge.