Milling Tool Coolant Nozzle Channels for Uniform Cutting-Edge Cooling
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Solution Overview
Problem
Existing cutting tools face challenges in achieving effective cooling of the machining zone, particularly when dealing with difficult-to-machine materials like titanium, which limits machining performance and cutting tool service life.
Innovation Solution
A cutting tool design featuring a coolant supply channel with a nozzle channel that branches off to direct coolant onto the cutting edge at high speed and precision, allowing for adjustable pressure and efficient coolant use, ensuring uniform cooling across multiple cutting edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If coolant is supplied to the machining zone using conventional coolant supply channels, then cooling effect is provided, but the cooling effectiveness is insufficient for difficult-to-machine materials and high machining performance requirements
Solution Approach 1:
The patent changes the physical parameters of the coolant supply system by reducing the flow cross-section of the coolant supply channel in the flow direction, which increases coolant pressure and velocity. This parameter change enables more effective cooling at the cutting edge, resolving the contradiction between cooling effectiveness and machining performance.
Solution Approach 2:
The patent introduces a nozzle channel with nozzle geometry that branches off from the coolant supply channel. This curved/nozzle structure accelerates the coolant flow and directs it precisely onto the cutting edge, significantly improving cooling effectiveness compared to conventional straight channels, thereby enabling higher machining performance.
2Stress or pressure
If coolant supply channel flow cross-section is reduced to increase pressure, then coolant pressure and velocity increase for better cooling, but the channel geometry becomes more complex
Solution Approach 1:
The coolant supply system is segmented into two functional parts: a coolant supply channel for transporting coolant and a separate nozzle channel for accelerating and directing coolant. This segmentation allows the supply channel to maintain simple geometry while the nozzle channel handles the pressure increase function, resolving the contradiction between pressure increase and geometric complexity.
3Reliability
If multiple nozzle channels branch off from the coolant supply channel to cool multiple cutting edges, then uniform cooling can be achieved, but the pressure distribution becomes difficult to control
Solution Approach 1:
The patent applies local quality by having each nozzle channel independently branch off from the coolant supply channel with its own optimized geometry. This allows each nozzle to be tailored for its specific location and cutting edge, ensuring uniform cooling across all cutting edges while maintaining relatively simple individual channel designs that are easier to control.
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
This design achieves high machining performance and extended cutting tool service life by providing targeted and efficient cooling with a small amount of coolant, ensuring uniform cooling capacity across all cutting edges.
Implementation Method 1
a flow cross-section of the coolant supply channel is reduced in one flow direction... the pressure of the coolant within the coolant supply channel can be adjusted in a targeted manner
Implementation Method 2
the nozzle channel is configured to conduct coolant onto the cutting edge... Using such a flow channel, coolant can be conducted onto the cutting edge at high speed and also with high precision
Implementation Method 3
the heat generated during machining can be dissipated reliably
Implementation Method 4
Effective cooling of the machining zone is also of great importance for materials that are difficult to machine
Data Source
AI summary
The invention relates to a cutting tool, in particular a milling tool, which comprises a tool body on which at least one cutting edge is provided. A coolant supply channel, from which at least one nozzle channel branches off fluidically, extends inside the tool body. The nozzle channel is configured to conduct coolant onto the cutting edge. A flow cross-section of the coolant supply channel is furthermore reduced in one flow direction.