Cutting Tool Alignment Indication Using Conductive Switching

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing cutting tools lack effective means for indicating rotational alignment between the cutting member and the holding device, which is crucial for precise positioning of the cutting edge with respect to the work-piece center, leading to inefficiencies in cutting operations.

Innovation Solution

A cutting tool system with a clamping sleeve adaptor and an alignment indicating unit that includes an electric circuit with conductive switch members and an indicator, allowing for precise rotational alignment by establishing or breaking an electric circuit based on the conductivity of the cutting member's switching arrangement, indicated by an on/off light.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional mechanical alignment methods are used, then the structure remains simple, but the alignment precision and indication capability are insufficient

Engineering Contradiction:
Improverotational alignment precisionVSAvoidalignment indicating system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical alignment indication methods with an electrical sensing system. Conductive switch members detect the rotational position of the cutting member through electrical contact, and this information is processed by a control circuit to provide precise alignment indication, substituting mechanical sensing with electrical sensing for improved precision.

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

Solution Approach 2:

The patent introduces conductive switch members as intermediary elements between the cutting member and the control system. These switch members make electrical contact with the cutting member at specific rotational positions, acting as mediators that convert mechanical rotational position into electrical signals for the alignment indication system.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If no alignment indication system is provided, then the device remains simple, but the cutting edge positioning accuracy deteriorates

Engineering Contradiction:
Improvecutting edge positioning accuracyVSAvoidalignment indicating unit complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent implements a feedback mechanism where conductive switch members detect the rotational position of the cutting member and provide electrical signals to a control circuit. The system processes this information and provides alignment indication feedback to the operator, enabling precise positioning of the cutting edge relative to the workpiece center through iterative adjustment based on the indication signals.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces manual trial-and-error alignment methods with an electrical indication system. The conductive switch members and control circuit provide objective electrical-based alignment indication, replacing subjective mechanical adjustment methods and improving positioning accuracy through precise electrical sensing of rotational position.

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

3Reliability

If spring-loaded mechanical indication devices are used, then rotational alignment can be indicated, but the device complexity and potential for mechanical failure increase

Engineering Contradiction:
Improvealignment indication reliabilityVSAvoidmechanical indication mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces spring-loaded mechanical indication devices with an electrical sensing system. Conductive switch members detect rotational position through electrical contact without mechanical spring mechanisms, eliminating the complexity and potential failure points of spring-loaded components while maintaining reliable alignment indication through electrical signal detection.

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

Solution Approach 2:

The patent uses conductive switch members as intermediary sensing elements that provide reliable detection of rotational position through electrical contact. These switch members serve as dependable intermediaries between the cutting member's rotational position and the control system, providing consistent electrical signals for alignment indication without the mechanical complexity of spring-loaded devices.

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

Provides accurate rotational alignment between the cutting member and the holding device, ensuring precise positioning of the cutting edge, thereby enhancing the efficiency and accuracy of cutting operations.

Implementation Method 1

an electric circuit with conductive switch members and an indicator, allowing for precise rotational alignment by establishing or breaking an electric circuit based on the conductivity of the cutting member's switching arrangement

Methodology Applied
Scientific EffectElectrical conductivity: Conduction (electrical)

Data Source

PatentUS12403532B2Cutting member, holding device and cutting tool with arrangement for indicating rotational alignment between cutting member and holding device
Publication Date: 2025.09.02 ISCAR LTD
  • US12403532B2 patent drawing
  • US12403532B2 patent drawing
  • US12403532B2 patent drawing

AI summary

A cutting tool includes a cutting member having a shank portion located in a clamping recess of a clamping sleeve adaptor of a holding device. The shank portion has a peripheral shank surface including a switching arrangement including two circumferentially spaced apart circumferential outer portions and a circumferential inner portion extending therebetween. The circumferential inner portion has opposite electrical conductivity to the two circumferential outer portions. The holding device has an alignment indicating unit including an electric switch including two spaced apart conductive switch members configured to be in electrically conductive communication or non-communication with each other thereby closing or opening the electric switch, so that an electric circuit established or broken, forming first and second states of the cutting tool, respectively. Switching between the first and second states is realized by rotation of the cutting member with respect to the clamping sleeve adaptor.