Machine tool arrangement

Details Machine tool arrangement Machine tool arrangement

1977-02-28

1979-09-11

Hafer, Robert A.

Tool driving or impacting

Means to drive tool about an axis

Means to hold and relatively rotate sections of tool shaft

408239R, E21B 300

Patent

active

041672186

ABSTRACT:
A machine tool arrangement comprising a main electric motor including a rotor having a hollow cylindrical rotor shaft intergral therewith and extending therethrough. A hollow driving spindle is disposed coaxially with the rotor shaft and the spindle is inserted in the rotor shaft at one end thereof for relative axial and rotation movement. The spindle is driven in rotation by the rotor and it is provided at its opposite end with an arbor-receiving opening. A draw rod extends through the rotor shaft and the spindle and has an externally threaded end engageable in the internally threaded opening in the arbor for securely attaching the arbor to the spindle. A positioning mechanism serves for adjusting the position of the arbor relative to a workpiece.

REFERENCES:
patent: 2924152 (1960-02-01), Zettler
patent: 3374711 (1968-03-01), Saunders
patent: 3678801 (1972-07-01), Hague et al.
patent: 3762271 (1973-10-01), Poincenot
patent: 3898911 (1975-08-01), DeCaussin

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