Cuboid Cutting Insert With Multi-Surface Edges For Wear Reduction

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Tooth cutters with interchangeable cutting inserts experience rapid wear, leading to high costs due to the need for a large number of inserts, necessitating more efficient utilization.

Innovation Solution

A cutting insert with a cuboid basic body featuring cutting edges on all four circumferential surfaces, allowing for 90° rotation to utilize multiple edges sequentially, and a conical surface for efficient grinding and production, along with curved edges and bevel surfaces for enhanced accuracy and clamping.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If cutting edges are provided on all four circumferential surfaces of the cuboid basic body, then the number of usable cutting edges per insert increases, but the device complexity increases

Engineering Contradiction:
Improvenumber of usable cutting edges per insertVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The basic body is segmented into four distinct circumferential surfaces, each equipped with its own cutting edge. This segmentation allows each surface to function as an independent cutting tool, enabling sequential use of multiple cutting edges on a single insert without requiring multiple separate inserts.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The single cutting insert is designed to perform multiple functions by providing cutting edges on all four circumferential surfaces. Each surface can be activated in sequence through rotation of the insert, making one insert universally capable of performing the cutting function four times, thereby replacing what would traditionally require four separate inserts.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If the basic body has a cuboid base enabling 90° rotation, then usability of all cutting edges is improved, but the manufacturing precision requirements increase

Engineering Contradiction:
Improveusability of cutting edgesVSAvoidmanufacturing precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The cuboid basic body utilizes its inherent asymmetric geometry with four distinct circumferential surfaces. Each surface is designed with specific angular relationships (90° apart) to enable sequential positioning. The asymmetric design ensures that each cutting edge occupies a unique spatial orientation, allowing the insert to be rotated to different positions for using different cutting edges while maintaining proper alignment with the workpiece.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentUS9427812B2Cutting insert for tooth cutters
Publication Date: 2016.08.30 KENNAMETAL INC
  • US9427812B2 patent drawing
  • US9427812B2 patent drawing
  • US9427812B2 patent drawing

AI summary

A cutting insert for tooth cutters includes a substantially cuboid basic body. The basic body has two top surfaces on sides opposite each other. The basic body also has four circumferential surfaces which extend in each case from an edge portion of the one top surface to an edge portion of the other top surface. A cutting edge is formed at at least one transition from each circumferential surface to one of the top surfaces.