Blade Holder Deceleration Chamber for High-Pressure Coolant
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Solution Overview
Problem
Cutting tool assemblies that convey coolant at pressures higher than designed are susceptible to leakage and damage due to the high impact of coolant on the parting blade.
Innovation Solution
Incorporating a deceleration chamber in the blade holder passageway with a greater cross-sectional area or a barrier surface to reduce the speed of coolant, thereby minimizing its impact on the parting blade and preventing leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If coolant is conveyed at high pressure (above 20 bar) to improve cooling effectiveness, then cooling performance is improved, but coolant leakage and damage to the parting blade occur due to high impact
Solution Approach 1:
A deceleration chamber is introduced as an intermediary component between the coolant supply and the parting blade. This chamber receives high-pressure coolant and decelerates it before the coolant exits to contact the blade, thereby maintaining high-pressure cooling capability while eliminating the harmful high-impact effect that causes leakage
Solution Approach 2:
The patent changes the velocity parameter of the coolant by introducing a deceleration chamber. The chamber is designed with specific geometry (cross-sectional area greater than the inlet, or with barrier surfaces) to reduce coolant speed from high-pressure velocity to a lower velocity before exit, thereby maintaining pressure for cooling while reducing impact force
2Productivity
If coolant pressure is increased above 20 bar to enhance cutting performance, then cutting effectiveness is improved, but the parting blade becomes susceptible to damage
Solution Approach 1:
The deceleration chamber serves as a mediator that allows high-pressure coolant to be conveyed to the cutting zone without directly impacting the blade with high velocity. The chamber geometry (larger cross-sectional area or barrier surfaces) dissipates the kinetic energy of the incoming coolant while maintaining its pressure potential for effective cooling during cutting
Solution Approach 2:
The deceleration chamber provides beforehand cushioning by reducing coolant velocity before the coolant reaches the parting blade. The chamber design (with increased cross-sectional area or opposing barrier surfaces) creates a cushioning effect that absorbs the momentum of high-pressure coolant, preventing direct high-impact damage to the blade while maintaining cooling effectiveness
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 deceleration chamber effectively reduces coolant pressure and impact on the parting blade, preventing leakage and damage, allowing for the safe conveyance of coolant at pressures exceeding 20 bar, such as up to 120 bar.
Implementation Method 1
The relatively increased cross-sectional area or volume, in theory, enables pressure reduction in the deceleration chamber
Implementation Method 2
Deflection of coolant entering the deceleration chamber, in particular deflection in a direction at least partially, or directly, opposing the entry direction of the coolant, can, in theory, reduce speed of coolant through the chamber
Data Source
AI summary
A cutting tool assembly includes a parting blade and a blade holder for holding same. The cutting tool assembly is configured for conveying pressurized coolant via the blade holder to a cutting portion of the parting blade. The blade holder includes a deceleration chamber configured for reducing impact of the pressurized coolant against the parting blade.