Machining Tool Triboelectric Surfaces for Fine Dust Agglomeration

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Solution Overview

Problem

Machining processes generate fine dust particles that are difficult to extract and pose health hazards, requiring expensive equipment and special filters, with existing solutions not effectively reducing emissions or improving particle size for easy separation.

Innovation Solution

A tool with triboelectrically charged areas that agglomerate fine dust particles into larger, easier-to-separate agglomerates by opposite charging, utilizing materials with different triboelectric properties to enhance agglomeration and neutralize charges for easier suction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If dust extraction systems and separation devices are used to remove fine dust, then health hazards and environmental contamination are reduced, but system complexity and cost increase significantly

Engineering Contradiction:
Improvehealth hazard from fine dustVSAvoidcomplexity of extraction system
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The invention converts the harmful fine dust particles into beneficial agglomerates by utilizing triboelectric charging. The charging areas on the tool surface impart opposite charges to different dust particles, causing them to attract and form larger agglomerates that are easier to extract and less harmful to health, thus transforming the harmful fine dust into a manageable form without complex extraction systems

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

Solution Approach 2:

The triboelectrically charged areas on the tool surface act as an intermediary between the machining process and dust extraction. These charging areas modify the electrical properties of dust particles, enabling them to agglomerate naturally, which simplifies the overall dust management system by reducing reliance on complex separation and extraction devices

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If expensive separation and extraction devices are installed for dust removal, then dust extraction effectiveness improves, but cost increases

Engineering Contradiction:
Improvefine dust extraction effectivenessVSAvoidcost of dust extraction system
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

By charging dust particles with opposite polarities through triboelectric areas on the tool, the invention causes fine dust to agglomerate into larger, easier-to-remove particles. This natural agglomeration process reduces the need for expensive specialized filter systems and makes dust extraction more cost-effective while maintaining effectiveness

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

Solution Approach 2:

The dust particles themselves perform the aggregation function through triboelectric charging on the tool surface. The charging areas cause particles to automatically attract and form agglomerates without requiring external separation or extraction devices, making the system self-sufficient and reducing overall cost

Inventive Principle:
Principle #25Self-service

3Object-generated harmful factors

If larger dust particles are generated during machining, then particle separation becomes easier and health risks decrease, but processing quality may be compromised

Engineering Contradiction:
Improveparticle size for separation easeVSAvoidprocessing quality
Core Design Contradiction:
Object-generated harmful factorsVSManufacturing precision

Solution Approach 1:

The triboelectric charging areas are integrated directly into the tool surface, ensuring continuous charging of dust particles throughout the machining process. This continuous action occurs simultaneously with material removal, maintaining processing quality while consistently generating agglomerates that are easier to separate and less harmful to health

Inventive Principle:
Principle #20Continuity of useful action

4Object-generated harmful factors

If triboelectrically differently acting charging areas are provided on the tool, then fine dust agglomeration is achieved, but device complexity increases

Engineering Contradiction:
Improvefine dust agglomerationVSAvoidtool structure complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The charging areas are merged directly into the tool surface, combining the machining function and dust charging function into a single integrated component. This eliminates the need for separate charging devices and reduces overall system complexity while achieving effective fine dust agglomeration

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The tool serves multiple functions: material removal through cutting elements and dust particle charging through triboelectric areas on the surface. This multi-functionality reduces the need for additional specialized equipment, thereby reducing device complexity while achieving dust agglomeration

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 effectively reduces fine dust emissions by creating larger, faster-descending agglomerates that are less harmful and easier to separate, improving air quality and reducing health risks while being cost-effective and easily retrofittable to existing machines.

Implementation Method 1

at least two triboelectrically differently acting charging areas (1, 2) are provided on the tool, which agglomerate the fine dust produced during machining into fine dust agglomerates by means of opposite triboelectric charging

Methodology Applied
Scientific EffectTriboelectric effect: Triboelectric Effect

Data Source

PatentEP3881958B1Unit for machining workpieces
Publication Date: 2023.07.19 HOLZPROFI AUSTRIA GMBH
  • EP3881958B1 patent drawingFigure 1~3
  • EP3881958B1 patent drawingFigure 4~6

AI summary

The invention relates to a tool designed for machining materials, in particular a cutting tool such as a saw tool, milling tool, grinding tool or drilling tool, comprising a base body (3) and at least one cutting element (5) arranged on the base body (3), wherein the tool has at least two triboelectrically differently acting charging areas (1, 2) which agglomerate the fine dust generated during machining into fine dust agglomerates by means of opposite triboelectric charging. The invention further relates to a method for reducing fine dust emissions.