Spindle assembly for machine tool

Details Spindle assembly for machine tool Spindle assembly for machine tool

2005-03-01

2005-03-01

Wellington, A. L. (Department: 3722)

Gear cutting, milling, or planing

Milling

With means to control temperature or lubricate

C409S233000, C408S23900A

Reexamination Certificate

active

06860683

ABSTRACT:
A spindle assembly for a machine tool wherein a rear end portion of the spindle is structured to allow the spindle to be operated at higher speeds, thereby enhancing precision. The spindle assembly includes a spindle mounted within a spindle housing able to undergo rotation by a rotor and bearings. A collet directly secures and releases a tool inside the spindle. A draw bar, one end of which is connected to the collet through a sleeve within the spindle, operates the collet. A piston and cylinder connected to the draw bar moves the draw bar in forward and reverse directions. A rotary joint supplies cutting oil to the spindle. An adapting arrangement connects a rear end of the draw bar and the rotary joint to allow forward and reverse movement with respect to the spindle.

REFERENCES:
patent: 4290720 (1981-09-01), Ferreira
patent: 4748357 (1988-05-01), Kempken
patent: 4915553 (1990-04-01), Lazarevic
patent: 5033922 (1991-07-01), Watanabe et al.
patent: 5613929 (1997-03-01), Bayer
patent: 5639194 (1997-06-01), Harroun
patent: 5662442 (1997-09-01), Taki et al.
patent: 6287059 (2001-09-01), Hashidate et al.
patent: 3629453 (1988-03-01), None

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