Circular Saw Blade Cooling Channels via Sacrificial Thread
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Solution Overview
Problem
Existing methods for producing circular saw blades with cooling channels are complex and require gluing or welding multiple components, limiting the ability to create blades with precise cooling channel dimensions and shapes, and often result in thicker blades due to larger channel diameters.
Innovation Solution
A method involving compressing circular discs with thread-like bodies that volatilize or liquefy upon heat application, forming continuous cooling channels of desired cross-sectional areas, allowing for one-piece construction without additional cutting edges and enabling small diameters and shapes, including circumferential connections for bypassing blocked channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple components (steel cores, spacers, flange bodies) are assembled together to form cooling channels, then cooling channels can be created, but the manufacturing process becomes complex requiring gluing or welding
Solution Approach 1:
The invention merges multiple separate components (steel cores and spacers) into a single integrated component. The spacer is inserted into a recess of the steel core during manufacturing, creating one-piece structure that eliminates the need for post-assembly operations like gluing or welding, while maintaining precise cooling channel dimensions.
Solution Approach 2:
The spacer is inserted into the recess of the steel core before the final hardening or finishing operations. This preliminary positioning ensures that the cooling channels are correctly formed from the start, avoiding the need for complex post-assembly adjustments or repairs.
2Quantity of substance
If larger diameter cooling channels are used, then coolant flow is improved, but the blade thickness increases
Solution Approach 1:
The invention creates cooling channels with non-uniform cross-sectional areas along their length. The channels have larger cross-sectional areas in regions where coolant flow is needed and smaller cross-sectional areas in other regions. This allows sufficient coolant quantity to be delivered while maintaining overall blade thickness constraints.
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 the production of circular saw blades with uniform cooling channels of precise dimensions and shapes, reducing thickness and complexity, ensuring efficient coolant delivery even under unfavorable conditions.
Implementation Method 1
thread-like bodies (3) made of a material which volatilizes when high temperature is applied or bodies of material which liquifies on application of high temperature
Implementation Method 2
thread-like bodies (3) made of a material which volatilizes when high temperature is applied or bodies of material which liquifies on application of high temperature
Implementation Method 3
subsequent removal of these thread-like bodies from the compressed pair of discs
Data Source
Figure 1~4
Figure 5~9
Figure 10~11
AI summary
The invention relates to a method for the production of a circular saw blade having a cooling channel. A plurality of fiber-shaped bodies is disposed on a first circular disk made of plastic material in such a way that each of the fiber-shaped bodies are oriented in the radial direction. Next, a second circular disk made of plastic material is disposed on the first disk and the fiber-shaped bodies. Finally, pressure is exerted on the second disk in the direction of the first disk. Subsequently, the fiber-shaped bodies are removed from the disk pair that is pressed together, leaving cooling channels (5). Finally, the disk pair is sintered to give a circular saw blade comprising cooling channels running radially.