Curved-Side Cutting Insert for Higher Rigidity and Fastening Force
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting inserts experience reduced fastening force and rigidity during high-speed machining due to flat longitudinal side surfaces, leading to vibrations and decreased cutting performance.
Innovation Solution
The cutting insert features inclined and convexly shaped side surfaces, with a through hole design that allows for increased fastening force and rigidity, and a curved or helix edge structure for improved cutting characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flat longitudinal side surfaces are used, then manufacturing is simple, but fastening force decreases during high-speed machining
Solution Approach 1:
The longitudinal side surfaces are designed with convex curvature instead of being flat. This curved shape increases the contact area and friction force with the seat surface, thereby enhancing fastening force during high-speed machining while maintaining manufacturing feasibility through standard forming processes
2Device complexity
If flat longitudinal side surfaces are used, then device complexity is low, but rigidity decreases leading to vibrations
Solution Approach 1:
The convex curved shape of the longitudinal side surfaces inherently increases structural rigidity compared to flat surfaces. The curvature provides better resistance to deformation and vibration during cutting operations, improving stability without requiring additional complex structural elements
3Manufacturing precision
If flat side surfaces are used, then manufacturing precision requirements are lower, but cutting characteristics deteriorate
Solution Approach 1:
The curved longitudinal side surfaces improve cutting characteristics by enhancing contact with the seat surface and reducing vibrations during cutting. This curvature can be achieved through standard forming processes without requiring excessively high manufacturing precision, thus maintaining productivity while improving performance
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3~4
AI summary
The present disclosure relates to a cutting insert, and a cutting insert according to the present disclosure comprises: an upper surface and a lower surface oriented in opposite directions; a first and a second shorter side surface connecting the upper surface and the lower surface to each other and oriented in opposite directions; a first and a second longer side surfaces connecting the upper surface and the lower surface to each other, connecting the first and the second shorter side surfaces to each other, oriented in opposite directions, and being longer than the first and the second shorter side surfaces; and a through hole extending through the upper surface and the lower surface, wherein when viewed toward the upper surface, the first longer side surface has two side portions, each side portion having an inclined shape with reference to the center portion.