Milling Tool Cooling Channels for Continuous Cutting-Edge Cooling
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Solution Overview
Problem
Existing milling tools experience premature tool fatigue due to insufficient cooling, leading to temperature shocks and cracking, especially when cooling is not continuous during material processing.
Innovation Solution
A milling tool design featuring a shank with fluidly connected cooling channels, where coolant is directed to outlet openings facing the cutting edges, ensuring targeted cooling, and potentially using additive manufacturing for complex coolant channel geometries and internal cavities to reduce material consumption and weight while maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling channels are drilled radially outwardly with outlet openings facing cutting edges, then cooling effect is improved, but manufacturing complexity increases
Solution Approach 1:
Instead of drilling cooling channels radially outwardly from the center to the periphery, the patent inverts the approach by introducing coolant axially from the shank through the profile body, with outlet openings on the face side. This reversal of the traditional cooling channel configuration simplifies the manufacturing process while maintaining effective cooling of the cutting edges.
Solution Approach 2:
The patent transitions from radial cooling channel configuration to axial cooling channel configuration, changing the dimension of coolant flow from radial outward to axial through the profile body. This dimensional change enables simpler manufacturing while still achieving targeted cooling at the cutting edges through the face-side outlet openings.
2Ease of manufacture
If additive manufacturing is used for complex coolant channel geometries, then manufacturing flexibility is improved, but manufacturing precision may be compromised
Solution Approach 1:
The patent combines traditional precision drilling methods for the axial cooling channel in the shank with additive manufacturing for the complex profile body geometry. This hybrid approach merges the precision of conventional machining with the flexibility of additive manufacturing, achieving both manufacturing flexibility and dimensional precision in the cooling channel system.
3Weight of moving object
If internal cavities are created to reduce material consumption, then weight is reduced, but structural strength may decrease
Solution Approach 1:
The patent applies local quality by creating internal cavities in specific non-critical areas of the profile body while maintaining solid, strong structures in load-bearing regions. The additive manufacturing process enables selective placement of material, providing structural strength where needed and reducing weight in areas where material can be removed without compromising overall structural integrity.
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 design provides efficient cooling, extending tool service life by maintaining continuous coolant flow directly to cutting edges, reducing temperature fluctuations and preventing cracking.
Implementation Method 1
a first cooling channel (10) which runs in the shank (4) at least in sections along the axis of rotation (T)... efficient cooling, extending tool service life by maintaining continuous coolant flow directly to cutting edges
Implementation Method 2
The milling tool is designed in such a way that coolant enters the first cooling channel on the shaft side and is conducted through the first cooling channel into the second cooling channel
Data Source
Figure 1~2d
Figure 2e~5
Figure 6a~6h
AI summary
The invention relates to a milling tool (2) comprising a shank (4) with an axis of rotation (T) and a profile body (6), wherein the profile body (6) has at least one cutting edge (8, 9), a first cooling channel (10) and a second cooling channel (12), wherein the first cooling channel (10) extends at least partially along the axis of rotation (T) in the shank (4), wherein the first cooling channel (10) and the second cooling channel (12) are fluid-connected, and wherein the second cooling channel (12) has at least one first outlet opening (20), the outlet opening surface of the first outlet opening (20) being opposite the cutting edge (8, 9). The invention further relates to a method for manufacturing such a milling tool.