High-speed hydrodynamic spindle and method for machining composi

Details High-speed hydrodynamic spindle and method for machining composi High-speed hydrodynamic spindle and method for machining composi

1994-07-21

1996-05-21

Howell, Daniel W.

Gear cutting, milling, or planing

Milling

Process

408 1R, 408124, 409193, 409231, B23C 100

Patent

active

055183468

ABSTRACT:
A method for machining is disclosed wherein cutting edges of a cutting tool are oriented at a negative rake of from approximately 0 degrees to -10 degrees. The tool is rotated at a speed of between approximately 15,000 rpm to approximately 30,000 rpm, after which the cutting edges are engaged with a workpiece. Thereafter, power applied to the cutting tool is varied so as to maintain constant rotational speed of the cutting tool while the cutting edges are engaged with the workpiece. During the machining process, vibrations are absorbed by a hydraulic cushion, allowing the tool to rotate without vibration, with heat generated by the machining process being confined mainly to the removed material.

REFERENCES:
patent: 3058559 (1962-10-01), Ohinberger
patent: 3703846 (1972-11-01), Krafft
patent: 4784540 (1988-11-01), Underbaug
patent: 4819526 (1989-04-01), Seise

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