Cutting Tool Coolant Channel Layout for Low-Loss Edge Supply
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Solution Overview
Problem
Existing cutting tools with internal coolant channels require complex manufacturing processes and precise alignment of multiple components, leading to increased costs and potential flow losses.
Innovation Solution
A cutting tool design featuring a shank, cutting head, and internal coolant channel system with a centrally extending inlet channel, branch channels, and outlet channels that can be manufactured using conventional methods, allowing for a one-piece or two-piece construction with seamless transitions and uniform coolant flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If an internal coolant channel system is implemented, then cooling effectiveness and tool life are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The coolant channel system is segmented into distinct functional sections: a straight inlet channel section for pressure-optimized coolant supply, and separate outlet channel sections that branch off at defined angles. This segmentation allows each section to be optimized independently for its specific function while simplifying the overall manufacturing process compared to complex curved channels.
Solution Approach 2:
Instead of creating complex curved coolant channels that would require advanced manufacturing techniques, the patent inverts the approach by using straight channels with defined branching angles. This inversion simplifies manufacturing while achieving the same cooling effectiveness through optimized channel geometry and distribution.
2Ease of manufacture
If multiple components with cooling channels are assembled, then manufacturing flexibility is improved, but manufacturing precision requirements and potential flow losses increase
Solution Approach 1:
The patent merges the inlet channel and outlet channels into a single integrated tool body with seamless internal transitions. The straight inlet channel and curved outlet channels are formed as one continuous structure, eliminating the need for separate components and their associated sealing and alignment requirements, thereby reducing manufacturing precision demands while maintaining manufacturing flexibility.
3Reliability
If curved coolant channels are used, then coolant flow to cutting edges is improved, but pressure losses and manufacturing complexity increase
Solution Approach 1:
The coolant channel is segmented into a straight inlet section and separate outlet sections branching at defined angles. This segmentation allows the inlet channel to maintain low pressure loss through its straight geometry, while the outlet channels provide reliable coolant delivery to cutting edges through their optimized curved paths, achieving both goals simultaneously.
Solution Approach 2:
Different sections of the coolant channel system have different geometric qualities optimized for their specific functions: the inlet channel has straight geometry for minimal pressure loss, while the outlet channels have curved geometry for reliable coolant delivery to cutting edges. This local optimization achieves both low pressure loss and high reliability.
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
Simplifies manufacturing, reduces costs, and minimizes pressure losses while ensuring reliable coolant supply to cutting edges, enhancing tool life and machining efficiency.
Implementation Method 1
an internal coolant channel system consisting of a centrally extending inlet channel (12) leading from an inlet opening (10) at the shank end (8) towards the cutting head (6)
Data Source
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AI summary
Cutting tool (30) with a shank (8) extending along a tool axis (4), a cutting head (6) axially adjoining the shank (8) and an internal coolant channel system formed from a centrally extending inlet channel (12) leading from an inlet opening (10) at the end of the shank towards the cutting head (6) to a branch point (14) located at a defined axial distance to the inlet opening (10), at least one decentering outlet channel (18) leading to an outlet opening (20) on the end face of the cutting head, and a straight branch channel (16) branching off from the inlet channel (12) at the branch point (14) and leading at a defined angle to the outlet channel (18). A cross-sectional area of the at least one branch channel (16) projected along the at least one branch channel (16) in the direction of the shaft end lies completely within the inlet opening (10).