Pressure-Activated Cutting Tool for Rapid Edge Position Adjustment

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Solution Overview

Problem

Existing cutting tools require fine adjustments for diameter setting and wear compensation, which is time-consuming, inefficient, and costly. Additionally, motion tools used for machining multiple diameters and features are complex and costly.

Innovation Solution

A cutting tool system incorporating a tool body with a flexible internal pressure chamber and at least one cutting edge. The flexible internal pressure chamber elastically deforms under pressure, causing the tool body and attached cutting edges to change position, allowing for precise adjustments without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual fine adjustment of cutting edges is performed for diameter setting and wear compensation, then manufacturing precision is improved, but loss of time and productivity deteriorate

Engineering Contradiction:
Improvecutting edge position precisionVSAvoidadjustment time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent replaces manual mechanical adjustment mechanisms with a pneumatic system. Pressurized fluid is introduced into a flexible pressure chamber, causing elastic deformation of the tool body to precisely position cutting edges. This substitution eliminates time-consuming manual operations while maintaining high positioning precision.

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

Solution Approach 2:

The patent employs a flexible pressure chamber that responds to pressurized fluid introduction. The pneumatic pressure causes elastic deformation of the tool body, enabling precise and rapid adjustment of cutting edge positions without manual intervention, thus improving both precision and speed of adjustment.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Adaptability or versatility

If motion tools are used to machine multiple diameters and features, then adaptability is improved, but device complexity and cost deteriorate

Engineering Contradiction:
Improvemulti-diameter machining capabilityVSAvoidtool system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs elastic deformation of the tool body through controlled pneumatic pressure to dynamically adjust cutting edge positions. This dynamic adjustment mechanism allows a single tool to machine multiple diameters and features by simply varying pressure levels, eliminating the need for complex motion mechanisms while maintaining versatility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes physical parameters (pneumatic pressure levels) to achieve different cutting edge positions and machining configurations. By varying pressure parameters, the same tool can perform multiple machining operations on different diameters, reducing device complexity while improving adaptability.

Inventive Principle:
Principle #35Parameter changes

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 system enables efficient and precise adjustments of cutting edges, reducing the need for manual fine-tuning and minimizing the complexity and cost associated with traditional motion tools.

Implementation Method 1

The flexible internal pressure chamber may be configured to elastically deform, due to pressure within the flexible internal pressure chamber, which in turn may deform the tool body, which in turn may change a position of the at least one cutting edge attached to the tool body.

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP4566744A1Pressure-activated tool
Publication Date: 2025.06.11 KENNAMETAL INC
  • EP4566744A1 patent drawingFigure 1
  • EP4566744A1 patent drawingFigure 2
  • EP4566744A1 patent drawingFigure 3

AI summary

A cutting tool system (10) may include a tool body (12), a flexible internal pressure chamber (14), and at least one cutting edge (16). The flexible internal pressure chamber may be disposed within the tool body. The at least one cutting edge may be attached to the tool body. The flexible internal pressure chamber may be configured to elastically deform, due to pressure within the flexible internal pressure chamber, which in turn may deform the tool body, which in turn may change a position of the at least one cutting edge attached to the tool body.