High speed machine tool spindle assembly

Details High speed machine tool spindle assembly High speed machine tool spindle assembly

1981-10-29

1983-12-20

Briggs, William R.

Gear cutting, milling, or planing

Milling

Cutter spindle or spindle support

279 48, 409234, B23C 900, B23Q 108

Patent

active

044214430

ABSTRACT:
A high speed machine tool spindle assembly for firmly retaining a cutting tool therein, notwithstanding machine tool vibration, includes a spindle having an axially extending bore therethrough. Integrated to each end of the spindle is a tool gripping collet, each collet being urged radially inward against the shank of a cutting tool disposed in the spindle bore by a respective one of a pair of collet nuts which each threadedly engage the spindle adjacent to a separate one of collets at each spindle end. Each of a pair of collet nut drivers is carried by the spindle adjacent to a separate one of the pair of collet nuts and each is slidable along the axis spindle to jointly engage a separate one of the pair of collet nuts and the spindle. Vlier screws are threaded into the spindle adjacent to each collet thereon and extends radially from the spindle to engage a separate one of the collet nut drivers to restrain each collet nut driver from axial movement after each is moved to jointly engage a collet nut and the spindle.

REFERENCES:
patent: 3026116 (1962-03-01), Marini, Sr.
patent: 3671050 (1972-06-01), Andersson
patent: 3716280 (1973-02-01), Leibensperger et al.
patent: 3882758 (1975-05-01), Muller
patent: 3894743 (1975-07-01), Hirumi
Sales Literature, TMI Forest "High Speed Electrospindle with Magnetic Bearing", Nov. 1979.

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