Wear-Resistant Cladding on Cutting Tool Clamp via Brazing

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Solution Overview

Problem

Cutting tools experience inadequate wear and abrasion resistance due to chip interference during turning operations, leading to premature component failure and increased maintenance costs.

Innovation Solution

A wear-resistant cladding layer composed of hard particles and a nickel-based braze material is applied to cutting tool components using a flexible cloth and brazing process, providing a metallurgical bond and enhanced durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If a thick cladding layer is applied to maximize wear resistance, then component lifespan is extended, but manufacturing complexity and process difficulty increase

Engineering Contradiction:
Improvecomponent lifespanVSAvoidmanufacturing complexity
Core Design Contradiction:
Duration of action of stationary objectVSEase of manufacture

Solution Approach 1:

The cladding layer is applied to the clamp member before final assembly of the cutting tool. This preliminary application allows for proper preparation of the clamp member surface (including cleaning and potential pre-heating) and ensures the cladding is in place before the component enters service, maximizing protective coverage from the start of operation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The invention replaces mechanical fastening or simple coating methods with a metallurgical brazing process. The nickel-based braze material melts and bonds the hard particles to the clamp member substrate, creating a strong metallurgical bond that is more durable than mechanical attachments or surface coatings, while still allowing for controlled application and thickness.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 solution significantly increases the abrasion resistance of cutting tool components, extending their lifespan and reducing maintenance costs by providing a high Abrasion Resistance Factor (ARF) and preventing premature failure.

Implementation Method 1

a nickel-based braze material that is applied to the clamp body and bonds the hard particles together and to the clamp member through metallurgical bonding

Methodology Applied
Scientific EffectMetallurgical bonding: Brazing

Data Source

PatentEP2398614B1Cutting tool components with wear-resistant cladding layer
Publication Date: 2015.07.08 KENNAMETAL INC
  • EP2398614B1 patent drawingFigure 1
  • EP2398614B1 patent drawingFigure 2~4

AI summary

A wear-resistant cladding layer for cutting tool components. A cutting tool includes a tool holder (12) and a clamp (34) structured and arranged for releasably securing an insert (22) to the tool holder (12). The cutting tool also includes a wear-resistant cladding layer (50) brazed on at least a portion of the clamp (34) and/or brazed on at least a portion of the tool holder (12), wherein the wear-resistant cladding layer (50) comprises hard particles and a brazing material.