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Screw Machines
Screw machines are automated lathes which can quickly mass-produce turned parts. A screw machine uses cutting methods similar to that of a lathe but is highly automated. Screw machines are typically used for high-volume, low-cost turned parts. Feed stock for a screw machine is a long cylindrical rod of material. The screw machine automatically turns/faces the part, parts it off, and advances the rod for the next part. A screw machine is illustrated below.


Cross Slide Simultaneous Operation
Below is illustrated an on-axis view of how cross slides in a screw machine sequentially cut the work piece. Simultaneous action increases throughput. The view is down the axis of the spindle and shows how tools on cross slides can cut the work piece, some simultaneously with others.


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