Grooved Cutting Insert with Diagonal Segmented Support Surfaces

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Solution Overview

Problem

Existing cutting inserts do not efficiently facilitate the removal of chips from a workpiece, as they lack effective geometries to enhance chip formation and removal.

Innovation Solution

The cutting insert features a first and second mounting surface with a first side surface divided by a diagonal groove, creating discrete triangular support surfaces bounded by rake surfaces, which form non-zero angles with the support surfaces and are designed to facilitate chip removal through optimized groove geometries such as U-shaped or V-shaped configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a grooved surface with plural support surfaces is used in cutting inserts, then chip removal efficiency is improved, but the structural complexity of the insert increases

Engineering Contradiction:

Improvechip removal efficiencyVSAvoidstructural complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The side surface of the cutting insert is segmented into multiple discrete triangular support surfaces by grooves extending diagonally across it. This segmentation creates separate chip flow paths and support regions, improving chip removal efficiency while maintaining a relatively simple overall structure through systematic division rather than complex geometry

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The grooves extend substantially diagonally across the side surface, utilizing the diagonal dimension to create separated triangular support surfaces. This diagonal orientation optimizes chip flow paths in multiple directions simultaneously, enhancing chip removal without requiring additional components or complex multi-dimensional structures

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Strength

If rake surfaces forming non-zero angles with support surfaces are used, then cutting edge strength is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvecutting edge strengthVSAvoidmanufacturing complexity

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

Rake surfaces are provided at specific locations where they form non-zero angles with the triangular support surfaces. This local angular configuration strengthens the cutting edges at critical positions without requiring complex angular geometries throughout the entire insert, balancing strength enhancement with manufacturing simplicity

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The rake surfaces form non-zero angles with the support surfaces, changing the geometric parameters at the cutting edge region. This angular configuration strengthens the cutting edges by optimizing stress distribution and chip flow, while the angles are designed to be achievable through standard manufacturing processes

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9186732B2Cutting insert with grooved surface defining plural support surfaces

Publication Date: 2015.11.17 SECO TOOLS AB

AI summary

A cutting insert includes a first mounting surface, a second mounting surface located on an opposite side of the insert from the first mounting surface, and a first side surface disposed between the first mounting surface and the second mounting surface. The insert further includes a first groove extending substantially diagonally across the first side surface and dividing the first side surface into discrete, separated, triangular first and second first side support surfaces. The first and second first side support surfaces are each bounded along first and second edges thereof by rake surfaces forming non-zero angles with the first and second side support surfaces and along third edges thereof by the groove.