Pivoting Suction Hood for Machine Tool Dust Extraction

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Solution Overview

Problem

The existing suction hoods for machine tools with rotating tools, such as grinding or cutting tools, complicate and prolong the process of tool changes due to their design, making it difficult to remove and replace the tools efficiently.

Innovation Solution

A suction hood with a first side wall that can be reversibly pivoted between a closed and open position, allowing for easy tool access and attachment, featuring a hinge mechanism and recesses for accommodating the tool and machine tool components, facilitating tool change by enabling the hood to be opened and closed for tool exchange.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the suction hood is designed with a fixed closed structure to effectively collect dust, then dust collection efficiency is improved, but tool replacement becomes complicated and time-consuming

Engineering Contradiction:
Improvedust collection efficiencyVSAvoidtool replacement time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The suction hood incorporates a movable side wall that can pivot between a closed position for dust collection and an open position for tool access. This dynamic structure allows the hood to adapt its configuration based on operational needs, resolving the contradiction between maintaining a closed structure for dust collection and enabling easy tool replacement.

Inventive Principle:
Principle #15Dynamics

2Object-affected harmful factors

If the suction hood is designed with a fixed closed structure to contain dust, then dust containment is improved, but ease of operation for tool changes deteriorates

Engineering Contradiction:
Improvedust containmentVSAvoidtool change ease
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The suction hood is segmented into movable and fixed parts, with the side wall capable of pivoting independently. This segmentation allows the hood to maintain dust containment when closed while providing easy access for tool changes when opened, resolving the contradiction between dust containment and operational ease.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the suction hood structure is simplified for easy tool access, then ease of operation is improved, but dust collection effectiveness deteriorates

Engineering Contradiction:
Improvetool access easeVSAvoiddust collection effectiveness
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The movable side wall design allows the suction hood to dynamically switch between open and closed states, providing easy tool access when opened while maintaining effective dust collection when closed, thus resolving the contradiction between operational ease and dust collection effectiveness.

Inventive Principle:
Principle #15Dynamics

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 simplifies the tool replacement process by allowing the suction hood to be easily opened and closed, reducing the complexity and time required for tool changes, enhancing operational efficiency in machine tool operations.

Implementation Method 1

a hinge to be provided on the first straight side edge of the first side wall and on the second straight side edge of the second side wall, with which the first side wall can be pivoted reversibly between the first position and the second position

Methodology Applied
Scientific EffectHinge mechanism: Hinge

Data Source

PatentEP3269503A1Suction hood with radial tool drawer opening
Publication Date: 2018.01.17 HILTI AG
  • EP3269503A1 patent drawingFigure 1
  • EP3269503A1 patent drawingFigure 2
  • EP3269503A1 patent drawingFigure 3

AI summary

Extraction hood (1) for a machine tool (2) with a rotating tool (10), in particular a grinding or cutting tool, for collecting and discharging dust generated during the use of the machine tool (2), comprising a first side wall (11) with a first straight side edge (21), a second side wall (12) with a second straight side edge (22), and an extraction channel (13) connected to the first and second side walls (11, 12). The first side wall (11) is reversibly pivoted between a first position and a second position, wherein in the first position the extraction hood (1) is in a closed state, so that a nearly closed cavity is formed between the first side wall (11) and the second side wall (12) for receiving the tool (10), and wherein in the second position the extraction hood (1) is in an open state, so that the tool (10) can be removed from the machine tool (2).