Machining and apparatus
AssigneeEaton Corporation
InventorsJoseph A. Kovach, John M. Burke
Life of this patent
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Abstract
Method and apparatus are provided for machining processes involving the generation of frictional heat in which the workpiece is contacted by a coolant whose viscosity progressively increases with decreasing temperature and by a pressurized fluid that, upon expansion while undergoing a reduction in pressure, absorbs heat and cools the coolant and increases its viscosity to provide a consistency that enhances its lubricity to minimize the generation of frictional heat during the machining process while enhancing conductive heat transfer into the machining tool.
Claims15
A method of reducing frictional generated while machining a workpiece, said method comprising the steps of:
- (a) directing a coolant onto the workpiece whose lubricity progressively increases with decreasing temperature;
- (b) contacting the coolant of step (a) with pressurized fluid that, upon expansion while undergoing reduction in pressure absorbs heat and cools the coolant sufficiently to increase the coolant's lubricity to a consistency operative to enhance the coolant's ability to reduce the frictional heat generated during the machining process.
Apparatus for reducing friction heat while machining a workpiece, said apparatus comprising:
- coolant delivery means for conveying a coolant onto the workpiece whose lubricity progressively increases with decreasing temperature;
- and
- pressurized fluid delivery means for contacting the coolant with a pressurized fluid that, upon expansion while undergoing a pressure reduction, absorbs heat and cools the coolant sufficiently to increase the coolant's lubricity to a consistency operative to enhance the coolant's ability to reduce the frictional heat generated during the machining process.
Dependencies are inferred from the claim text.