Patent ID: 6050757
Filing Date: 2000-04-18
Classification: B23C,Y10T

Abstract:
A method of rotary milling workpieces that are rotated during machining about their own axes, whereby simultaneously at least two independently working rotary-milling tools conduct machining operations on different locations of the workpiece,wherein the workpiece rotation speed is varied or set to obtain an optimal machining with one rotary-milling tool and the tool rotation speed of the second and each further rotary-milling tool is set in accordance with the varying or set workpiece rotation speed; andwherein, with two rotary tools which simultaneously conduct milling operations, the predetermined chip thickness and the constant tool rotation speed of a first rotary milling tool are proportionately combined to determine the speed profile of the workpiece necessary to maximize the service life of the rotary milling tool and the tool rotation speed of the second rotary-milling tool is set in accordance with this speed profile.