Multi-Rising-Face Cutting Insert for Precision Chip Control
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Solution Overview
Problem
Existing cutting tools for workpieces, such as wood or metal, face challenges in efficiently cutting to desired sizes and shapes due to limitations in insert design and material composition, leading to inefficiencies and increased costs.
Innovation Solution
The cutting tool incorporates a cutting insert with a specific geometric structure featuring a convexly curved corner portion, inclined rake face, and varying rising faces with distinct inclination angles, along with a holder for secure attachment, utilizing materials like polycrystalline diamond (PCD) or cubic boron nitride (CBN) for enhanced cutting performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional insert designs are used, then manufacturing simplicity is maintained, but cutting efficiency and precision deteriorate
Solution Approach 1:
The insert is divided into multiple functional regions with distinct rising faces (first rising face, second rising face, third rising face) having different inclination angles. Each region serves a specific cutting function, allowing optimization of cutting efficiency without requiring complete redesign of the entire insert structure.
Solution Approach 2:
Different portions of the insert are given different geometric properties through varying rising face inclination angles. The first rising face has a different inclination than the second and third rising faces, allowing each local region to be optimized for its specific cutting task while maintaining overall structural integrity.
2Manufacturing precision
If conventional rising face designs are used, then manufacturing simplicity is maintained, but chip control and cutting precision deteriorate
Solution Approach 1:
The rising faces are configured with different inclination angles in different regions. The first rising face has a first inclination angle, while the second and third rising faces have a second inclination angle that differs from the first. This local differentiation allows precise control of chip flow and cutting action in each region, improving overall cutting precision.
Solution Approach 2:
The multi-region rising face design creates dynamic chip control by directing chips through different geometric paths. The varying inclination angles allow chips to be controlled differently in different regions, adapting to varying cutting conditions and improving precision without requiring a completely complex redesign.
3Reliability
If simpler insert designs are used, then manufacturing cost is reduced, but insert durability and cutting performance deteriorate
Solution Approach 1:
The insert incorporates multiple rising faces with different inclination angles to segment the cutting action into distinct phases. This segmentation allows each region to be optimized for specific durability requirements, distributing stress and wear more evenly across the insert, thereby improving overall durability without requiring excessive geometric complexity.
Data Source
AI summary
A cutting insert may include an upper surface, a lateral surface, and a cutting edge including a boundary between the upper surface and the lateral surface. The upper surface may include a first rising face that extends upward and a second rising face that is connected to an upper side of the first rising face and extends upward. The first rising face may include a first region that extends along a corner portion and a second region that extends along a side portion. The second rising face may include a third region connected to the first region and a fourth region connected to the second region. An entirety of a boundary between the first region and the third region may be positioned above the cutting edge. A boundary between the second region and the fourth region may include a portion disposed below the cutting edge.