Turning – Process of turning
Patent
1990-02-26
1991-07-09
Schmidt, Frederick R.
Turning
Process of turning
82124, 82127, 82129, B23B 300
Patent
active
050294997
ABSTRACT:
In a remaining bar material machining method, a plurality of works are taken from a continuous bar material on an NC lathe, and the remaining portion left at the end of the bar material is machined effectively. In the lathe in which both first and second headstocks are axially movable along the bed, the continuous bar material can be continuously machined with efficiency. At that time, to utilize the remaining portion left at the end of the bar material effectively without discarding it, this remaining bar material is transferred to the second headstock. An NC controller includes a main machining program and a remaining bar material machining program; when the remaining bar material has been transferred to the second headstock, the remaining bar material machining program is executed instead of the main machining program having hitherto been executed. During machining the remaining bar material on the second headstock, the first headstock is waiting in readiness for the machining of the next bar material.
REFERENCES:
patent: 3703112 (1972-11-01), Selby
patent: 4457193 (1984-07-01), Matthey
patent: 4763549 (1988-08-01), Hata et al.
patent: 4821612 (1989-04-01), Myers
Cruz Lawrence
Schmidt Frederick R.
Star Micronics Co. Ltd.
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