Spindle structure for machine tool

Details Spindle structure for machine tool Spindle structure for machine tool

1990-01-29

1991-03-05

Briggs, William

Gear cutting, milling, or planing

Milling

Cutter spindle or spindle support

384 42, 384913, 408238, B23C 106, B23B 3902, F16C 3324

Patent

active

049973240

ABSTRACT:
A spindle structure for a machine tool such as a boring machine, for example, includes a rotatable tubular shaft to be coupled to a rotative drive source, and a spindle axially slidably disposed in the tubular shaft and rotatable in unison with the tubular shaft. Bushings with powder on WC-base cemented carbide thermally sprayed on inner peripheral surfaces thereof are disposed between the tubular shaft and the spindle to prevent fretting corrosion. The WC-base cemented carbide comprises 12.about.18 wt % of Co, 4.about.6 wt % of C, 0.1.about.1.2 wt % of Fe, and 75.about.84 wt % of W.

REFERENCES:
patent: 4019899 (1977-04-01), Negishi
patent: 4066451 (1978-01-01), Rudy
patent: 4334926 (1982-06-01), Futamura et al.
patent: 4522453 (1985-06-01), Lammer et al.
patent: 4812057 (1989-03-01), Kuhn et al.
patent: 4855188 (1989-08-01), Garg

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