Bench Cutting Tool Dust Collection Mechanism

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Solution Overview

Problem

Conventional dust-collecting devices for bench cutting tools have insufficient dust-collecting performance due to reliance on air streams generated by rotating circular saw blades, which can be inadequate for effective chip collection.

Innovation Solution

A bench cutting tool equipped with a self-dust collecting mechanism that includes a dust-collecting container connected to a dust-collecting port and an independent dust-collecting mechanism capable of generating a powerful air stream to forcibly collect cutting chips, enhancing dust-collecting efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the dust-collecting device relies on the air stream generated by the rotating circular saw blade, then the device structure remains simple, but the dust-collecting performance is insufficient

Engineering Contradiction:
Improvedust-collecting performanceVSAvoiddevice structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the air stream generation function from the rotary cutter blade with an additional self-dust collecting mechanism (fan or blower). This merging of two air stream sources creates a synergistic effect where the combined air streams provide sufficient suction force to collect cutting chips effectively, resolving the contradiction between maintaining simple structure and achieving adequate dust-collecting performance.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The dust-collecting device is designed to serve multiple functions: it utilizes the existing air stream from the rotary cutter blade while also incorporating a self-dust collecting mechanism that can operate independently or in conjunction with the blade's air stream. This multi-functionality allows the device to adapt to different cutting conditions and maintain effective dust collection across various scenarios.

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

2Productivity

If the dust-collecting device uses only the air stream from the rotary cutter blade, then the device complexity is low, but the dust-collecting efficiency is insufficient in some situations

Engineering Contradiction:
Improvedust-collecting efficiencyVSAvoiddevice structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent merges the air stream from the rotary cutter blade with an additional air stream generated by a self-dust collecting mechanism (fan or blower). This combination creates a more powerful and reliable air stream system that can effectively collect cutting chips even in challenging cutting conditions, thereby improving dust-collecting efficiency while adding only moderate structural complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The self-dust collecting mechanism (fan or blower) operates autonomously to generate its own air stream for dust collection, independent of the rotary cutter blade's operation. This self-service capability ensures that the dust-collecting device can maintain effective performance without relying solely on the blade's air stream, thereby improving productivity with a relatively simple additive structure.

Inventive Principle:
Principle #25Self-service

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 self-dust collecting mechanism significantly improves dust-collecting performance by combining the air stream from the rotary cutter blade with a powerful air stream generated by the self-dust collecting mechanism, ensuring effective chip collection and maintaining tool accuracy and working conditions.

Implementation Method 1

the self dust-collecting mechanism is capable of generating a dust-collecting air stream

Methodology Applied
Scientific EffectAir stream: Fluid Spray

Implementation Method 2

cutting chips produced in a cutting site can be collected into the dust-collecting container by an air stream generated by rotation of the rotary cutter blade

Methodology Applied
Scientific EffectAir stream generation through rotation: Turbulence

Data Source

PatentEP2388097B1Bench cutting tool with dust collecting device
Publication Date: 2016.11.09 MAKITA CORP
  • EP2388097B1 patent drawingFigure 1
  • EP2388097B1 patent drawingFigure 2
  • EP2388097B1 patent drawingFigure 3

AI summary

A dust-collecting device (30) of a cutting tool (1) having a rotary cutter blade may include a dust-collecting container (31) connected to a dust-collecting port (31a) of a stationary cover that covers an upper portion of the rotary cutter blade (14). The dust-collecting container includes a self dust-collecting mechanism (32) that is capable of forcibly collecting cutting chips into the dust-collecting container (31