Two-Edge Carbide Parting Insert With Narrow Kerf and Low Sinter Deformation
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Solution Overview
Problem
Existing cemented carbide cutting inserts for parting and grooving operations face challenges in achieving a small cut width without deformation during the sintering process, limiting their depth of cut and increasing material costs, especially in two-cutting-edge designs.
Innovation Solution
A modified cemented carbide two-cutting-edge insert with specific dimensions (0.65 mm ≤ body width ≤ 0.95 mm and 2 mm ≤ body length ≤ 14 mm) is designed to minimize deformation, allowing for a smaller cut width than classic two-cutting-edge inserts and comparable to single-cutting-edge inserts, while maintaining two cutting edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the body width of a two-cutting-edge insert is reduced to achieve a smaller cut width, then the cut width decreases, but deformation during the sintering process increases
Solution Approach 1:
The patent applies parameter changes by optimizing the body width to a specific range (0.65 mm ≤ body width ≤ 0.95 mm) and body length (2 mm ≤ body length ≤ 14 mm) to achieve the desired cut width while minimizing sintering deformation. This quantitative parameter optimization resolves the contradiction between reducing cut width and preventing deformation.
2Loss of substance
If the body width is reduced to achieve smaller cut width, then material costs decrease, but the insert becomes more prone to deformation
Solution Approach 1:
The patent determines an optimal body width range (0.65 mm ≤ body width ≤ 0.95 mm) that balances material cost reduction with sufficient deformation resistance. This parameter optimization ensures the insert uses minimal material while maintaining reliability during sintering and operation.
3Length of moving object
If the body length is increased to allow greater depth of cut, then the depth of cut increases, but deformation during sintering increases
Solution Approach 1:
The patent optimizes the body length to a specific range (2 mm ≤ body length ≤ 14 mm) to achieve the required depth of cut while minimizing sintering deformation. This parameter balance resolves the contradiction between increasing depth of cut capability and preventing manufacturing deformation.
4Duration of action of moving object
If a two-cutting-edge design is used instead of single-cutting-edge, then tool life increases through multiple edges, but the cut width increases and material cost increases
Solution Approach 1:
The patent applies parameter changes by precisely controlling the body width (0.65 mm ≤ body width ≤ 0.95 mm) and body length (2 mm ≤ body length ≤ 14 mm) of the two-cutting-edge insert to achieve a cut width comparable to single-cutting-edge inserts. This allows the two-cutting-edge design to provide extended tool life while maintaining competitive cut width dimensions.
Data Source
AI summary
A two-cutting-edge parting insert including a first cutting portion, a second cutting portion and an elongated body portion connecting the first and second cutting portions. The elongated body portion has a body width (BW) measurable parallel to a lateral axis and a body length (BL) measurable parallel to an elongation axis. The body width is smaller than both cut widths of the cutting edges of the first and second body portions and fulfills the condition: 0.65 mm≤BW≤0.95 mm; and the body length fulfills the condition: 2 mm≤BL≤14 mm.