VIBRATION CUTTER SPINDLE Russian patent published in 2010 - IPC B23B47/08 

FIELD: machine building.

SUBSTANCE: spindle consists of case, wherein shaft is installed on bearings, and of vibrator of regulated amplitude and vibration frequency. Holes for flow of operating fluid are made in the case. The shaft is mounted on hydro-static bearings rigidly built in the case; the shaft is made in form of a piston of the hydro-cylinder; while the vibrator is made as a four-line hydro-distributor; further the vibrator consists of a regulator of flow installed at input of the four-line hydro-distributor, of hydraulic lines of pressure and drain, of a sleeve with holes rigidly fixed in the case, also the holes are overlapped with the shaft-piston in its neutral position at value not less, than preset amplitude of vibration; the vibrator consists of two bushings arranged on the sides of the sleeve; the bushings, sleeve and shaft-piston form two cavities continuously connected with the four-line hydro-distributor by means of holes of the case and hydro-lines of pressure and drain.

EFFECT: increased service life and upgraded quality of processing.

1 dwg