Radially Adjustable Cutting Tool Holder With Transverse Fine Adjustment

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Solution Overview

Problem

Existing cutting tools face limitations in precise adjustment of cutting edges due to expansion requirements for elastic deformation or pivoting, which restricts the number of cutting edge carriers and results in imprecise adjustments.

Innovation Solution

A cutting tool design featuring radially adjustable cutting edge carriers with a transversely adjustable adjusting device, allowing precise positioning of cutting elements relative to the base body, enabling multiple cutting edge carriers to be arranged in a compact axial space with precise adjustment capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If elastic deformation or pivoting is used for adjustment, then cutting edge adjustment is enabled, but the axial extension of the cutting edge holder increases and installation space is limited

Engineering Contradiction:
Improvecutting edge adjustment precisionVSAvoidaxial extension of cutting edge holder
Core Design Contradiction:
Manufacturing precisionVSLength of moving object

Solution Approach 1:

The adjusting device is oriented transversely to the axis of rotation, utilizing a different spatial dimension for adjustment mechanisms. The adjusting element is adjustable both transversely to the axis of rotation and transversely to the direction of movement of the cutting tool holder, enabling precise radial adjustment without requiring axial extension.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If elastic deformation or pivoting is used for adjustment, then cutting edge adjustment is enabled, but the number of cutting edge carriers that can be arranged is restricted

Engineering Contradiction:
Improvecutting edge adjustment precisionVSAvoidnumber of cutting edge carriers
Core Design Contradiction:
Manufacturing precisionVSQuantity of substance

Solution Approach 1:

By orienting the adjusting device transversely to the axis of rotation rather than axially, the patent enables multiple cutting edge carriers to be arranged in a compact axial space. Each cutting edge carrier can be individually adjusted without requiring significant axial length, thereby increasing the number of carriers that can be accommodated on the base body.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If conventional adjusting devices are used, then cutting edge adjustment is possible, but adjustment precision is insufficient

Engineering Contradiction:
Improveadjustment operationVSAvoidadjustment precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The adjusting element acts as an intermediary component between the adjusting rod and the cutting tool holder. It is supported by the adjusting rod and supports the cutting tool holder, enabling precise force transmission and position control. The adjusting element is adjustable both transversely to the axis of rotation and transversely to the direction of movement of the cutting tool holder, providing two-dimensional adjustment capability for precise cutting edge positioning.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This design allows for precise and accurate adjustment of cutting edges, enabling efficient machining of multiple bearing webs with a high number of cutting edges in a small axial space, improving processing efficiency and reducing the need for tool changes during different processing steps.

Implementation Method 1

the cutting tool holder(s) are displaced radially outwards via a wedge-shaped surface mechanism formed by the associated control surface of the adjusting rod and the respective adjusting element

Methodology Applied
Scientific EffectWedge mechanism: Wedge

Data Source

PatentEP3658320B1Cutting tool comprising an adjusting device
Publication Date: 2023.11.01 GUEHRING KG
  • EP3658320B1 patent drawingFigure 1
  • EP3658320B1 patent drawingFigure 2
  • EP3658320B1 patent drawingFigure 3

AI summary

The invention relates to a cutting tool comprising a main part (16; 116) that can be rotationally driven about a rotational axis, at least one cutting insert holder (12; 112) mounted on the main part (16; 116) such that it can be radially adjusted, and an adjusting device (28) for adjusting the position of the cutting insert holder (12; 112) relative to the main part (16; 116). The cutting insert holder (12; 112) is mounted in a guide recess (18; 118) in the main part (16; 116) such that it can be moved transversely, preferably radially, to the rotational axis, and the adjusting device (28) has an adjusting element (32) that is arranged such that it can be moved inside the main part (16; 116) transversely to the rotational axis and transversely to the displacement direction of the cutting insert holder (12; 112) and supports the cutting insert holder (12; 112).