Self-Powered Tool Clamping System Using Inertial Energy

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Solution Overview

Problem

Tool clamping systems in machining centers face limitations due to the need for external energy sources, such as batteries, which increase maintenance efforts and hinder the integration of intelligent tools in harsh environments, as they require external charging and supervision.

Innovation Solution

A tool clamping system that generates electrical energy from inertial energy using a mechanically drivable tool holder with an electromagnetic generator, allowing for self-sustaining power supply and wireless communication of sensor signals without external voltage sources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If battery or accumulator is used for energy supply, then the measurement system can operate, but additional maintenance and supervision effort is required

Engineering Contradiction:
Improveenergy supplyVSAvoidmaintenance effort
Core Design Contradiction:
Use of energy by moving objectVSEase of operation

Solution Approach 1:

The tool clamping system generates its own electrical energy through an electromagnetic generator that converts inertial energy from the rotating tool holder into electrical power. This self-generating capability eliminates the need for external battery or accumulator systems, thereby removing the associated maintenance and supervision requirements while ensuring continuous operation of measurement and control systems.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces the mechanical battery/accumulator energy storage system with an electromagnetic generation system that directly converts mechanical inertial energy into electrical energy. This substitution eliminates the need for chemical energy storage and its associated maintenance issues, providing a cleaner, more reliable power source for the tool clamping system.

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

2Use of energy by moving object

If battery or accumulator is used for energy supply, then the measurement system can operate, but charging station must be located outside the machine tool or application must be removed

Engineering Contradiction:
Improveenergy supplyVSAvoidcharging infrastructure
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The tool clamping system generates its own electrical energy through an electromagnetic generator that converts inertial energy from the rotating tool holder into electrical power. This self-generating capability eliminates the need for external battery or accumulator systems, thereby removing the associated maintenance and supervision requirements while ensuring continuous operation of measurement and control systems.

Inventive Principle:
Principle #25Self-service

3Loss of information

If sensor systems are equipped with additional intelligence, then monitoring capability is improved, but energy supply becomes a limitation

Engineering Contradiction:
Improvemonitoring capabilityVSAvoidenergy supply
Core Design Contradiction:
Loss of informationVSUse of energy by moving object

Solution Approach 1:

The tool clamping system generates its own electrical energy through an electromagnetic generator that converts inertial energy from the rotating tool holder into electrical power. This self-generating capability provides sufficient energy to support intelligent sensor systems and measurement devices, enabling continuous monitoring and data collection without being constrained by external power sources or battery limitations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent converts the inertial energy, which is normally a passive physical property of the rotating tool holder, into a useful resource by using an electromagnetic generator to transform it into electrical energy. This conversion provides the necessary power for intelligent sensor systems and measurement devices, turning an otherwise unused energy source into a beneficial power supply that enables enhanced monitoring capabilities.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

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

Enables continuous monitoring and control of machining processes by utilizing inertial energy for power generation, reducing maintenance needs and allowing for wireless data transfer, thus improving tool performance and operational efficiency.

Implementation Method 1

an electromagnetic generator comprising a stator part being mounted on said tool holder and a rotor part being rotatably mounted on said stator part; wherein said stator part and said rotor part cooperate as an electromagnetic generator configured for generating electrical energy from inertial energy of said rotor part relative to said stator part

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS10286510B2Tool clamping system
Publication Date: 2019.05.14 OTTO BILZ WERKZEUGFABRIK GMBH & CO
  • US10286510B2 patent drawing
  • US10286510B2 patent drawing
  • US10286510B2 patent drawing

AI summary

Disclosed is a tool system including a drive for driving a tool holder including an electromagnetic generator for generating electrical energy from inertial energy of the tool holder. The tool holder may be driven in rotation, wherein the electromagnetic generator comprises a rotor part, which is rotatably mounted on the tool holder, and a stator part on the tool holder cooperating with each other for generating a voltage by electromagnetic induction. Alternatively, an axially movable inertial mass can be used for utilization of an oscillating linear movement.