Cutting Insert V-Flute Geometry for Secure Holder Engagement
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Solution Overview
Problem
The existing cutting inserts face challenges in easy attachment and detachment from holders due to weak gripping forces, leading to complications in the process and potential falling during handling.
Innovation Solution
The cutting insert features a V-shaped flute with a convex shape at the opening and bottom portions, allowing for stable engagement with the holder and reducing lateral shifting, facilitating easy attachment and detachment while preventing falling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the insert is designed with a simple sliding structure for attachment and detachment, then the ease of operation is improved, but the gripping force becomes weak causing the insert to fall during handling
Solution Approach 1:
The flute is designed with a convex curved surface instead of a flat or linear structure. This curvature allows the holder to grip the insert more effectively by conforming to the rounded shape, preventing the insert from falling during handling while maintaining easy sliding attachment and detachment.
2Manufacturing precision
If the flute has a uniform opening angle throughout, then the manufacturing precision is improved, but the gripping force is insufficient causing lateral shifting during use
Solution Approach 1:
The opening angle of the flute is designed to vary along its length rather than remaining uniform. Specifically, the opening angle increases from the bottom of the flute toward the opening, creating different local geometries that optimize both the gripping force at the contact points and the overall structural integrity, preventing lateral shifting during use.
3Device complexity
If the insert uses a conventional flute design without convex shapes, then the device complexity is reduced, but the insert cannot be securely held leading to handling issues
Solution Approach 1:
By introducing a convex curved surface in the flute design, the insert achieves better gripping characteristics without significantly increasing overall complexity. The curvature provides natural contact points for the holder, improving handling stability while maintaining a relatively simple flute structure that is easy to manufacture.
Data Source
AI summary
A cutting insert according to one non-limiting example has a quadrangular prism shape extending from a front end toward a rear end along a central axis, and comprises a cutting portion, and a main body portion. The main body portion has an upper surface having a V-shaped flute extending along the central axis. An opening portion and a bottom portion of the flute each have a convex shape protruding upward in a direction along the central axis. A first flute has a first region positioned on the rear end side and a second region positioned on the front end side with respect to the first region. An opening angle of the first flute in the first region is smaller than an opening angle of the first flute in the second region.