Miter Saw Dust Collection via Linear Guide and Flexible Hose
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Solution Overview
Problem
Conventional saws face issues with dust and chip collection due to the dust collection bag tilting vertically when the machine head is lowered, resulting in insufficient airflow for effective dust and chip transport.
Innovation Solution
A saw design featuring a dust receptacle connected via a flexible line to a linear guide on the machine frame, allowing the dust collector to move linearly and maintain airflow efficiency even when the machine head pivots, with the flexibility of the connecting line compensating for different movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dust collection bag is mounted on the machine head to move with it during sawing, then the dust collector remains close to the saw blade, but the dust collection bag tilts into a vertical position above the saw blade when the machine head is pressed down, resulting in insufficient airflow to transport dust and chips effectively
Solution Approach 1:
The dust collection system is segmented into two independent parts: the machine head with saw blade that pivots vertically, and the dust collection bag mounted on the machine frame that remains horizontally oriented. This segmentation allows each component to perform its function independently without interfering with the other's orientation requirements
Solution Approach 2:
A flexible connecting line (suction hose) acts as an intermediary between the saw blade cover and the dust collection bag. This flexible connector transmits the airflow from the saw blade area to the dust collector while accommodating the different movement patterns and orientations of the two components
2Shape
If the dust collection bag is fixed in position on the machine frame, then the dust collector maintains proper orientation for airflow, but the flexible connecting line must be sufficiently flexible to accommodate the pivoting motion of the machine head without kinking
Solution Approach 1:
The connecting line is designed as a flexible hose or bellows structure that can bend and extend without kinking. This flexible construction allows the dust collection bag to remain fixed in its optimal horizontal orientation while the connecting line adapts to the pivoting motion of the machine head through controlled flexibility rather than rigid mechanical joints
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
Ensures effective dust and chip collection without the need for excessive air supply, as the dust collector remains operational and efficient during sawing operations, with options for dimensionally unstable or stable containers and additional air assistance for enhanced performance.
Implementation Method 1
The flexibility of the connecting line between the suction socket and the dust collector compensates for the different directions of movement of the downwardly pivoted machine head or the saw blade cover on the one hand and the dust collector on the other. The connecting line is so flexible that it does not kink when the machine head is pivoted
Implementation Method 2
The air flow created by the rotating saw blade is used here. Dust and chips are carried away and collect in the dust collection bag
Data Source
Figure 1~2
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Figure 5~6
AI summary
The invention relates to a saw, in particular a miter saw, compound miter saw or compound miter saw. The saw has a machine head pivotably mounted on a machine frame in a vertical plane, which, for sawing, can be pressed downwards from a rest position onto the machine frame (6) and carries a saw blade that rotates for sawing, as well as a dust collection device that serves to collect the chips and dust produced during sawing and is connected to a connecting nozzle (9) on a saw blade cover (8) mounted above the saw blade on the machine head, wherein a linear guide (3) is provided on the machine frame (6) and the dust collection device is arranged on a slide that is slidably mounted in the linear guide (3), and wherein the dust collection device is connected to the connecting nozzle (9) via a flexible connecting line.