Center drive machine

Details Center drive machine Center drive machine

1987-06-11

1989-03-21

Schmidt, Frederick R.

Turning

Lathe

B23B 300

Patent

active

048133116

ABSTRACT:
The center drive machine comprises on each machine bed half a center drive headstock for seating and driving the workpiece and in each instance a tool holder slide for the uptake of tools. Both machine units are movable on the same machine bed. For setting the machine according to the workpiece length and for executing the work cycle, both machine units are movable on the machine bed by means of a single drive unit, the drive unit being disposed at one of these machine units and engaging at the other machine unit. For moving the machine units along the machine bed, one machine unit is clamped to the machine bed, allowing the drive to brace itself against this clamped machine unit and the other machine unit to move. The drive unit comprises a servomotor and a spherical roller spindle. After extension of the total length of the spherical roller spindle, the previously clamped machine unit is released and the other machine unit clamped relative to the machine bed, so that then the previously clamped machine unit can be moved. By means of the drive unit, not only the moving of the machine units in rapid motion but also the feed during machining is carried out.

REFERENCES:
patent: 1571323 (1926-02-01), Cole et al.
patent: 1571331 (1926-02-01), Hagman
patent: 3442166 (1969-05-01), Pope et al.
patent: 3937110 (1976-02-01), Renoux
patent: 4064774 (1977-12-01), Maddock
patent: 4207785 (1980-06-01), Grels
patent: 4405226 (1983-09-01), Hansen et al.
patent: 4445405 (1984-05-01), Champeau

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