Patent ID: 6071047
Filing Date: 2000-06-06
Classification: B01D,B03D,B23Q,Y02P,Y10S,Y10T

Abstract:
A method for feeding a coolant liquid to a cutting machine or grinding machine, which is characterized by installing an annular nozzle for coolant liquid above a milling tool or grinding tool connected to a vertical main spindle so that it faces downward at a substantially coaxial position, the inner wall of said nozzle which extends to its discharge port being formed with a curved surface and a twist channel for producing a turbulent flow, whereby the coolant liquid being fed is discharged downward through said discharge port generally as a spiral flow which is a collection of particulate turbulent flows, thereby forming a cylindrical veil of spiral flow of coolant liquid which surrounds said milling tool or grinding tool and whose lower end reaches the surface of the workpiece, at least a part of said spiral flow being caused to move from the lower end of said cylindrical veil along the surface of the workpiece in a whirl toward the central region until it is fed to the region under machining which is in contact with the milling tool or grinding tool, the at least a part of said spiral flow being discharged outside said cylindrical veil together with chips and heat of friction and diffused along the workpiece surface.