Cutting Insert Varying Honing Widths Reduce Wear
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Solution Overview
Problem
Conventional cutting inserts experience excessive honing on inner cutting edges, leading to increased cutting resistance and wear, which reduces product life and susceptibility to fractures, as uniform honing across the entire cutting edge is applied without consideration for varying cutting loads.
Innovation Solution
A cutting insert design featuring a cutting edge with varying honing widths, where the inner cutting edge has a narrower honing width than the major and end cutting edges, and the honing width gradually decreases with distance from the connecting point, tailored to accommodate different cutting loads, thereby reducing excessive wear and fracture risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If uniform honing is applied across the entire cutting edge, then fracture resistance of the major cutting edge is improved, but cutting resistance increases and wear is promoted on the inner cutting edge
Solution Approach 1:
The patent applies different honing widths to different portions of the cutting edge based on their specific functional requirements. The major cutting edge receives wider honing (first width) for enhanced fracture resistance, while the inner cutting edge receives narrower honing (second width) to minimize cutting resistance and wear. This local differentiation of honing quality resolves the contradiction by tailoring the honing treatment to the specific load and function of each cutting edge portion.
2Strength
If uniform honing is applied across the entire cutting edge, then fracture resistance is improved, but product life is reduced due to excessive wear on the inner cutting edge
Solution Approach 1:
The patent implements local quality differentiation by applying wider honing to the major cutting edge for fracture resistance while applying narrower honing to the inner cutting edge to reduce wear and extend product life. This selective honing approach ensures that each cutting edge portion receives the appropriate level of honing treatment based on its specific operational requirements.
3Reliability
If uniform honing is applied across the entire cutting edge, then edge fracture susceptibility is reduced, but cutting efficiency decreases due to increased cutting resistance
Solution Approach 1:
The patent applies local quality principles by differentiating honing widths across different cutting edge portions. The major cutting edge receives wider honing to reduce fracture susceptibility and improve reliability, while the inner cutting edge receives narrower honing to maintain low cutting resistance and high cutting efficiency. This localized differentiation resolves the contradiction between reliability and productivity.
Data Source
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AI summary
The present invention provides a cutting insert (1) in which suitable honing is formed on a cutting edge (13). The cutting insert (1) is provided with: two end surfaces (10,11) opposing each other; a peripheral side surface (12) extending between the two end surfaces; and a cutting edge (13) formed on an intersecting ridge between at least one of the two end surfaces (10,11) and the peripheral side surface (12). The cutting edge (13) includes a major cutting edge (52) and an inner cutting edge (54). Honing (60, 70, 71) is provided on the major cutting edge (52) and the inner cutting edge (54) . A width (W2) of a second honing (71) of the inner cutting edge (54) is narrower than a width (W1) of a first honing (70) of the major cutting edge (52), as viewed from a side of the end surfaces (10,11).