Cutting Tool Cooling Nozzle with Conical Channel
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Solution Overview
Problem
Existing cutting tools face challenges in efficiently cooling the cutting interface between the tool and workpiece, leading to heat damage and reduced tool longevity.
Innovation Solution
A cutting element with a rake surface, relief surface, and cutting edge, featuring a cooling nozzle integrated at an acute angle to the rake surface and a conical cooling channel that increases fluid pressure and absorbs heat before emission, enhancing cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling fluid is provided from the side of the rake face or relief face, then the cutting interface is cooled, but the cooling efficiency is insufficient due to heat buildup at the cutting edge
Solution Approach 1:
The cooling aperture is positioned upstream of the cutting edge, allowing cooling fluid to be delivered to the cutting interface before the heat generation peak occurs. This preliminary cooling action prevents excessive heat buildup at the cutting edge, thereby improving both temperature control and tool longevity.
Solution Approach 2:
The cooling aperture is oriented at an acute angle relative to the rake surface, directing cooling fluid along a novel trajectory that targets the cutting interface more effectively. This angular orientation creates a new dimension in cooling fluid delivery, improving cooling efficiency compared to conventional perpendicular or parallel arrangements.
2Temperature
If cooling fluid pressure is increased to improve cooling efficiency, then heat removal is enhanced, but the device complexity increases
Solution Approach 1:
The conical configuration of the cooling channel gradually changes the cross-sectional area from wide to narrow, which naturally increases cooling fluid pressure through geometric constriction. This parameter change in channel geometry provides pressure enhancement without requiring additional pumps or complex pressure control systems.
Solution Approach 2:
The conical cooling channel structure automatically generates increased cooling fluid pressure through its own geometry, eliminating the need for external pressure-generating components. The channel serves dual functions: cooling and pressure amplification, thereby reducing overall device complexity while improving heat removal efficiency.
3Temperature
If the cooling aperture is positioned close to the cutting edge, then cooling effectiveness is improved, but the risk of chip entanglement and fluid blockage increases
Solution Approach 1:
The cooling aperture is oriented at an acute angle to the rake surface, directing cooling fluid along a trajectory that bypasses the chip flow path. This angular positioning in a different dimensional orientation allows the cooling fluid to reach the cutting interface effectively while avoiding entanglement with chips and reducing blockage risk.
Solution Approach 2:
The cooling function is localized to a specific upstream position and angular orientation, creating a focused cooling zone that targets the cutting interface without interfering with chip evacuation paths. This localized quality differentiation separates the cooling function from the chip flow region, eliminating harmful interactions.
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 improved cooling efficiency by directing high-pressure cooling fluid directly to the cutting edge, reducing heat buildup and extending tool life.
Implementation Method 1
the cooling channel can have a conical configuration with the wide end of the cone being spaced from the nozzle. Thus, at least one advantage which may arise from the above design is increased pressure of the cooling fluid as it is being pushed through a gradually decreasing cross-sectional area.
Implementation Method 2
when passing through the channel, even before being emitted through the nozzle, the cooling fluid can already absorb some of the heat of the cutting insert from within, thereby contributing to cooling of the cutting edge.
Data Source
AI summary
An integral cutting tool configured for revolving about a central axis is provided. The cutting tool is formed with at least one cutting portion having a rake surface, a relief surface, and a cutting edge formed at the intersection between the rake surface and the relief surface. The cutting tool is further provided with a cooling fluid provision arrangement having at least one passage, and a cooling aperture formed at the relief surface. The cooling aperture is directed towards the cutting edge at an acute angle.