Circular Saw Blade Surface Channels for Targeted Coolant Delivery
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Solution Overview
Problem
Conventional circular saw blades face challenges in efficiently delivering a cooling and lubricating emulsion to the saw teeth during high-speed cutting, leading to instability and increased material removal, particularly when using multi-part blades with internal channels which are costly and prone to vibration issues.
Innovation Solution
A saw blade design featuring open channels on its lateral surface, created by engraving, such as laser engraving, that guide the coolant emulsion from the blade body to the outer circumference using centrifugal force, allowing for targeted lubrication without increasing the blade's width or complexity, and optionally using a liquid-repellent coating and a guide device for efficient liquid distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-part saw blades with internal channels are used to deliver cooling-lubricating emulsion to saw teeth, then lubrication efficiency is improved, but blade stability and vibration behavior deteriorate
Solution Approach 1:
The blade body is divided into functional zones with open channels on specific surfaces, allowing targeted coolant delivery to saw teeth while preserving the integrity of the blade structure. The channels are segmented to specific areas rather than贯穿 the entire blade, maintaining structural stability.
Solution Approach 2:
The solution transitions from internal 3D channels (multi-part construction) to surface-level 2D open channels engraved on the blade surface. This dimensional change delivers coolant effectively while avoiding the structural complexity and instability of internal channels.
2Reliability
If multi-part saw blades with internal channels are manufactured, then coolant delivery to outer circumference is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The coolant delivery function is extracted from the internal structure and placed on the external surface of the blade. Open channels are engraved on the surface rather than being embedded internally, simplifying manufacturing to a single-piece construction with surface features.
Solution Approach 2:
The complex mechanical assembly of multi-part blades with internal channels is replaced by a single-piece blade with laser-engraved surface channels. This substitution dramatically reduces manufacturing complexity while maintaining coolant delivery functionality.
3Reliability
If internal channels are created within the blade body, then coolant flow to saw teeth is improved, but blade thickness and material strength are reduced
Solution Approach 1:
The blade maintains its full thickness and structural integrity by placing coolant channels on the surface rather than removing material internally. The surface channels act as flexible pathways for coolant without compromising the blade's core structural strength.
Solution Approach 2:
The blade structure is segmented into functional surface channels and structural core, allowing coolant flow pathways to exist on the surface without reducing the thickness or strength of the blade body itself.
4Device complexity
If conventional cooling-lubricating emulsion application is used, then simplicity is maintained, but targeted lubrication at the cutting point is insufficient
Solution Approach 1:
The blade surface is given local quality variations through open channels at specific locations. These channels concentrate coolant delivery precisely at the saw teeth and cutting point, providing targeted lubrication without requiring a complex application system.
Solution Approach 2:
The blade itself serves the cooling and lubrication function through its own surface channels, eliminating the need for external application devices. The blade's rotation during operation automatically delivers coolant to the cutting point, achieving targeted lubrication through self-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
This solution ensures efficient lubrication and cooling of the saw teeth, reducing chip adhesion and the need for mechanical chip removal brushes, while maintaining the stability and material strength of conventional saw blades, and avoiding the width and cost issues associated with multi-part blades.
Implementation Method 1
at least one side surface of the core blade is provided with open channels for guiding liquids, wherein these channels are introduced into the corresponding side surface of the core blade in particular by engraving, for example by laser engraving
Data Source
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AI summary
The present invention relates to a saw blade for a circular saw, with a one-piece or multi-part circular disc-shaped base blade 2, on the outer circumference of which a large number of circumferentially distributed saw teeth are arranged and whose center has means 5.6 for fastening the saw blade to a drive shaft 4. at least one side surface of the blade body 2 being provided with open channels 7 for conducting liquids. The invention also relates to a circular saw machine with such a saw blade and a method for producing such a saw blade.