Reamer Coolant Channels in Clamping Section for Stable Supply
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Solution Overview
Problem
Existing rotationally drivable cutting tools face challenges in maintaining machining accuracy and tool life due to inadequate coolant/lubricant supply, particularly in high-stress areas, and require complex manufacturing processes with multiple components.
Innovation Solution
Integration of coolant/lubricant channels in the clamping section of the tool, with axial outlets guiding coolant/lubricant to cutting edges, ensuring a stable and efficient supply even under centrifugal forces, suitable for both wet and dry machining, and allowing for a simplified tool structure and reduced material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coolant/lubricant channels are integrated into the shank with radial channel systems, then adequate coolant/lubricant supply to cutting edges is achieved, but manufacturing effort and device complexity increase significantly
Solution Approach 1:
The tool is divided into functionally independent components: a cutting head with integrated coolant channels and a shank. The cutting head can be manufactured separately with precise coolant channel integration, then assembled to the shank. This segmentation allows complex coolant supply geometry to be achieved in the cutting head without complicating the entire tool manufacturing process.
Solution Approach 2:
The coolant channels are nested within the cutting head structure itself, with channels formed directly in the cutting head body and connecting to the shank's central coolant channel. This nested integration eliminates the need for separate radial channel systems or external coolant delivery mechanisms, reducing overall device complexity while maintaining reliable coolant supply.
2Reliability
If multiple components are assembled to achieve coolant/lubricant supply, then functional requirements are met, but manufacturing effort and assembly complexity increase
Solution Approach 1:
The cutting head and coolant channel system are merged into a single integrated component. The coolant channels are formed directly within the cutting head structure during manufacturing, eliminating the need for separate radial channel components or complex assembly operations. This merging reduces both manufacturing effort and assembly complexity while ensuring reliable coolant delivery to all cutting edges.
3Reliability
If coolant/lubricant is supplied under high pressure to overcome centrifugal forces, then adequate supply to cutting edges is maintained, but energy consumption increases
Solution Approach 1:
Instead of relying solely on high axial pressure to overcome centrifugal forces, the invention utilizes the radial dimension by forming coolant channels that extend from the central axial channel out to the cutting edges. This multi-dimensional channel configuration allows coolant to be delivered along both axial and radial paths, reducing the pressure required to overcome centrifugal effects while maintaining reliable supply.
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 provides a reliable and efficient coolant/lubricant supply to cutting edges, enhancing tool life and chip removal capabilities while reducing manufacturing complexity and material requirements, making it suitable for high-performance reamers and other fine-machining tools.
Implementation Method 1
even if the working pressure of the coolant/lubricant is kept at an easily manageable level of, for example, over 5 bar... without any radially external limitation has to cover
Data Source
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AI summary
The invention relates to a rotatably drivable cutting tool, preferably embodied as a fine machining tool having an integrated coolant/lubricant supply system, for machining bores, preferably throughbores. The tool, preferably embodied as a reamer, has a cutting part (324) on which a plurality of blades or cutting edges and flutes (320) are configured, and a shank (326) which configures a chucking section on a side facing away from the cutting part. The aim of the invention is to more efficiently supply the cutting edges with coolant/lubricant and to improve the cost-effectiveness of the production method. To achieve this aim, a number of coolant/lubricant channels (338) corresponding to the number of flutes are configured in the chucking section, said channels having respective axial discharge openings (342) and leading along the shank to respective associated flutes of the cutting part.