Cutting Tool Coolant Channels With Straight Branch Flow Paths
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Solution Overview
Problem
Existing machining tools with internal cooling lubricant channels are complex to manufacture, require advanced techniques, and suffer from flow losses due to multiple parts and intricate channel designs.
Innovation Solution
A machining tool with a centrally running inlet channel, decentralized outlet channels, and straight-line branch channels that can be produced in one or two pieces using conventional methods, ensuring seamless transitions and minimizing pressure losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an internal cooling lubricant channel system is implemented, then cooling and lubrication efficiency is improved, but device complexity increases
Solution Approach 1:
The cooling lubricant channel system is segmented into distinct functional sections: a centrally running inlet channel for coolant supply, decentralized outlet channels for distribution to cutting edges, and straight-line branch channels connecting them. This segmentation allows each section to be optimized independently while maintaining overall system efficiency, reducing the complexity burden on any single component.
Solution Approach 2:
The patent transitions from complex three-dimensional curved channels to straight-line branch channels that extend radially from the central inlet channel. This dimensional simplification maintains effective cooling lubricant delivery to cutting edges while dramatically reducing manufacturing complexity and enabling conventional production methods.
2Reliability
If advanced manufacturing techniques like deep hole drilling or additive manufacturing are used, then channel efficiency is improved, but manufacturing complexity and cost increase
Solution Approach 1:
Instead of using complex curved channels that require advanced manufacturing, the patent inverts the approach by using straight-line branch channels that radiate from a central inlet. This inversion simplifies the manufacturing process to conventional techniques while maintaining effective coolant delivery, eliminating the need for deep hole drilling or additive manufacturing.
Solution Approach 2:
The straight-line branch channel design enables the use of conventional, cost-effective manufacturing methods rather than expensive advanced techniques. The simplified geometry allows standard machining processes to produce efficient cooling channels, making the tool economically viable for widespread application.
3Adaptability or versatility
If multiple separate parts are used to form the tool, then adaptability is improved, but manufacturing precision and assembly complexity increase
Solution Approach 1:
The patent merges the inlet channel, branch channels, and outlet channels into an integrated cooling lubricant channel system where straight-line branch channels extend directly from the central inlet channel. This merging eliminates the need for separate cooling channel components and their associated sealing interfaces, significantly reducing assembly complexity and alignment precision requirements while maintaining design flexibility.
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 allows for simple, cost-effective production of machining tools with efficient cooling lubricant distribution, enhancing tool life and machining efficiency by reducing friction and improving chip removal.
Implementation Method 1
The internal cooling lubricant channel system is formed from a centrally running inlet channel (12), which leads via a shaft-side channel section from an inlet opening (10) at the shaft end all the way to a branch point (14)... at least one outlet channel (18), which leads in a decentralized manner to an outlet opening (20) on the cutting head front side
Implementation Method 2
On the other hand, the cooling lubricant acts as lubricant, which reduces friction between the tool and the workpiece, whereby the cutting process is simplified and the required cutting force is decreased
Implementation Method 3
On the one hand, the cooling lubricant contributes significantly to the cooling of the tool and of the workpiece. Significant amounts of heat, which lead to an overheating of the tool, are generated during the drilling or milling due to friction
Data Source
AI summary
The present invention relates to a machining tool (30) with a shaft (8) extending along a tool axis (4), a cutting head (6) axially adjoining the shaft (8) and an internal cooling lubricant channel system formed from a centrally running inlet channel (12), which leads from an inlet opening (10) at the shaft end in the direction of the cutting head (6) all the way to a branch point (14), which lies at a defined axial distance from the inlet opening (10), at least one outlet channel (18) running in a decentralized manner, which leads to an outlet opening (20) on the cutting head front side, and a branch channel (16) running in a straight line, which branches off from the inlet channel (12) at the branch point (14) and which leads to the outlet channel (18) at a defined angle. A cross sectional surface of the at least one branch channel (16), which is projected along the at least one branch channel (16) in the direction of the shaft end, lies completely within the inlet opening (10).