Double-Sided Indexable Threading Insert With Five-Pointed Star Geometry

The cutting insert employs an asymmetric five-pointed star geometry where five abutment sections are positioned at specific angular intervals (36 degrees apart) along the periphery. This asymmetric arrangement creates a unique three-point abutment configuration with the tool body that prevents rotational movement while maintaining structural simplicity. The abutment sections are located at predetermined positions that engage with corresponding features in the tool body, providing secure attachment without requiring complex retention mechanisms.

The insert design incorporates pre-positioned abutment sections that are geometrically configured to engage with the tool body in a predetermined three-point abutment arrangement. This preliminary geometric configuration ensures that the insert is mechanically locked in the correct angular position before machining begins, preventing any rotational movement during operation. The five-pointed star geometry with abutment sections at specific intervals creates inherent anti-rotation features that maintain machining precision throughout the cutting process.

The tool body is designed as a unitary one-piece structure that integrates the pocket, abutment surfaces, and retention features into a single monolithic component. This merging of functions eliminates the need for separate assembly of multiple components, reducing manufacturing complexity and production costs. The five abutment sections on the insert engage with three abutment surfaces formed directly in the tool body, providing secure attachment without requiring additional fasteners or complex mechanisms. The asymmetric five-pointed star geometry is achieved through single-piece manufacturing, simplifying production while ensuring reliable insert retention.