Cutting Insert Multiaxial Pressing Eliminates Grinding

Solution Overview

Problem

Existing cutting inserts for milling tools are cumbersome to manufacture, requiring separate grinding steps and sintering processes due to their complex shape, making them inefficient and costly to produce.

Innovation Solution

A cutting insert design featuring a central longitudinal axis with specific relief faces and recesses that allow for multiaxial pressing (MAP) manufacturing, eliminating the need for grinding and simplifying the production process by enabling direct pressing and sintering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the cutting insert has a complex shape with constraining parts, then the cutting performance is improved, but the manufacturing complexity increases requiring separate grinding steps

Engineering Contradiction:

Improvecutting performanceVSAvoidmanufacturing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple manufacturing operations into a single pressing step. The pressing tool is designed with multiple axes and forming elements that can simultaneously create the insert body, relief faces, and constraining parts during the pressing operation, eliminating the need for subsequent separate grinding steps

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If the cutting insert has a complex shape with constraining parts, then the cutting performance is improved, but the production time increases due to multiple manufacturing steps

Engineering Contradiction:

Improvecutting performanceVSAvoidproduction time

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent merges multiple manufacturing operations into a single pressing step. The pressing tool is designed with multiple axes and forming elements that can simultaneously create the insert body, relief faces, and constraining parts during the pressing operation, eliminating the need for subsequent separate grinding steps and reducing production time

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If the cutting insert has a complex shape with constraining parts, then the cutting performance is improved, but the manufacturing cost increases

Engineering Contradiction:

Improvecutting performanceVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines multiple manufacturing operations into a single pressing step. The pressing tool is designed with multiple axes and forming elements that can simultaneously create the insert body, relief faces, and constraining parts during the pressing operation, eliminating the need for subsequent separate grinding steps and reducing manufacturing cost

Inventive Principle:

Principle #5Merging (Combining)

4Reliability

If the cutting insert has a complex shape with constraining parts, then the cutting performance is improved, but the dimensional accuracy and surface quality require additional processing

Engineering Contradiction:

Improvecutting performanceVSAvoiddimensional accuracy

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent combines multiple manufacturing operations into a single pressing step. The pressing tool is designed with multiple axes and forming elements that can simultaneously create the insert body, relief faces, and constraining parts during the pressing operation, eliminating the need for subsequent separate grinding steps and achieving dimensional accuracy and surface quality in one operation

Inventive Principle:

Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The design facilitates efficient and cost-effective manufacturing of cutting inserts with improved dimensional accuracy and surface quality, reducing production time and costs while maintaining the necessary cutting edge performance.

Implementation Method 1

the cutting insert is formable by multiaxial pressing (MAP) with a partition of a relevant pressing tool at the central longitudinal axis, the first and second relief faces and the first recess being formable in the MAP operation

Methodology Applied

Scientific EffectCompression: Compression

Data Source

PatentUS10350686B2Cutting insert and milling tool

Publication Date: 2019.07.16 SANDVIK INTELLECTUAL PROPERTY AB

AI summary

A cutting insert includes an insert body having a central longitudinal axis. The insert body has a first radial side and a second radial side. A first axial side includes a first relief face, a second relief face, and a first recess having a first bottom surface. The first relief face, the second relief face, and the first bottom surface are arranged such that each point of same is visible from either a first side view towards the first radial side or from a second side view towards the second radial side. The insert body is longer along the longitudinal direction at a central portion towards the central longitudinal axis than at an outer portion towards one of the first or second radial sides. Further a milling tool is disclosed.