Guide-bar device for multi-spindle lathe

Details Guide-bar device for multi-spindle lathe Guide-bar device for multi-spindle lathe

1985-10-29

1987-03-17

Larson, Lowell A.

Turning

Process of turning

414 17, B23B 1304

Patent

active

046497790

ABSTRACT:
The device comprises a distributor with switching valves and individual circuits of hydraulic fluid under pressure and of vacuum, the switching valves permitting to connect the guiding tubes either to the circuit of fluid under pressure or to the circuit of vacuum. The guiding tube which encloses a remnant of a bar stock in which a last piece is machined is set under vacuum for retracting the feeding piston of this guiding tube toward the rear part of the device in an extension tube during the indexing of the barrel at the time of machining the last piece. This permits to supress the unproductive time normally necessary for retracting the feeding piston of the guiding tube in which a new bar stock to be machined must be introduced.

REFERENCES:
patent: Re29905 (1979-02-01), Scheurer
patent: 2300457 (1942-11-01), Mariotte
patent: 4034632 (1977-07-01), Lohner
patent: 4406190 (1983-09-01), Mason
patent: 4421446 (1983-12-01), Leon et al.
patent: 4423993 (1984-01-01), Eaton
patent: 4577536 (1986-03-01), Lechot et al.

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