Telescopic Dust Collection Head for CNC Tool Changes

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Solution Overview

Problem

Dust collection assemblies in cutting machines often obstruct tool bit changes and may not provide adequate suction due to improper sizing or shaping, requiring manual intervention and failing to effectively remove debris.

Innovation Solution

A dust collection assembly with a telescopically movable head and nested members that automatically adjust between extended and retracted positions, allowing for tool bit changes and improved suction by connecting to a vacuum system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the dust collection assembly is positioned to surround the tool holder and tool bit, then debris suction is improved, but tool bit changing is obstructed

Engineering Contradiction:
Improvedebris accumulationVSAvoidtool bit changing
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The dust collection assembly is designed with telescopic members that allow it to dynamically change its configuration between an extended state (surrounding the tool holder for effective debris collection) and a retracted state (clearing the tool bit changing area). This dynamic adaptability resolves the contradiction by enabling the assembly to optimize its position based on operational requirements.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The telescopic members are nested within each other, allowing the dust collection assembly to compact into a smaller configuration when retracted. This nesting mechanism enables the assembly to clear the tool bit changing area while maintaining the capability to extend and surround the tool holder during cutting operations for effective debris suction.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Ease of operation

If the dust collection assembly is manually adjusted, then tool bit changing can be facilitated, but operational efficiency is reduced

Engineering Contradiction:
Improvetool bit changingVSAvoidoperational efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The dust collection assembly is equipped with an automatic adjustment mechanism that senses when tool bit changing is required and autonomously retracts or extends the telescopic members. This self-service capability eliminates the need for manual intervention, thereby facilitating tool bit changing while maintaining high operational efficiency.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The manual mechanical adjustment system is replaced with an automated mechanism that may incorporate sensors, actuators, or other intelligent control systems. This substitution enables the dust collection assembly to automatically adapt its position based on operational conditions, improving productivity while maintaining ease of operation.

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

3Ease of manufacture

If the dust collection assembly is improperly sized or shaped, then it can be easily manufactured, but suction effectiveness is inadequate

Engineering Contradiction:
Improveassembly fabricationVSAvoiddebris removal effectiveness
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The dust collection assembly is divided into multiple telescopic members that can be manufactured as separate, standardized components. This segmentation allows each member to be fabricated using conventional manufacturing processes, while the overall assembly achieves the complex geometry needed for effective suction through the coordinated arrangement of these segments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The dust collection assembly utilizes telescopic members that can change their effective size and shape parameters dynamically. This allows the assembly to achieve optimal geometric parameters for suction effectiveness during operation, while the base components can be manufactured with standard dimensions, balancing ease of manufacture with performance requirements.

Inventive Principle:
Principle #35Parameter changes

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 automatic adjustment of the dust collection assembly to facilitate tool bit changes and enhances debris removal efficiency by ensuring consistent suction, reducing manual intervention and improving operational efficiency.

Implementation Method 1

The inlet is configured to fluidly connect to a vacuum

Methodology Applied
Scientific EffectVacuum suction: Suction

Data Source

PatentUS11565360B2Dust collection for cutting machine
Publication Date: 2023.01.31 UWM RESEARCH FOUNDATION INC
  • US11565360B2 patent drawing
  • US11565360B2 patent drawing
  • US11565360B2 patent drawing

AI summary

A dust collection assembly for a computer numerical control (CNC) cutting machine includes an adapter configured to couple to an arm of the CNC cutting machine and a head telescopically coupled to the adapter by a plurality of nested members. The CNC cutting machine includes the arm supporting a spindle and a tool holder coupled for co-rotation with the spindle. Each of the plurality of nested members are collapsible relative to each other. The head is movable between an extended position in which the nested members are configured to surround the tool holder and a tool bit, and a retracted position in which at least some of the nested members are telescopically received in the adapter. The head defines an inlet fluidly connected to the plurality of nested members when the head is at least in the extended position. The inlet is configured to fluidly connect to a vacuum.