Buy Screw Machine and Sell Screw Machine at affordable Prices ^^

Find Cheap and Best Screw Machine

Traditionally, a screw machine produced relatively simple work pieces. For the sake of cycle time, machining of complex features was often relegated to secondary operations. 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. Feedstock 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. Screw Machines have been replaced by CNC Lathes to some extent. However, for high volume production of turned components nothing is as cost efficient as a Screw Machine. The screw machine operation works with steel, brass, aluminum, copper, stainless steel and plastics up to 13/4 inch diameter in round, hex, tube and square stock.
A multi-spindle screw machine can simultaneously perform cutting, facing, turning, and drilling or boring operations. Both single and multiple spindle screw machines can be fitted with attachments such as cross slides, countersinks, and burr and thread roll attachments. A single-spindle screw machine uses cross slides that come into position to perform each operation in turn. A Screw Machine may have a single spindle but, in contrast to a lathe, a Screw Machines may have multiple spindles. Each spindle contains a bar of material that is being machined simultaneously. A common configuration is six spindles. The cage that holds these six bars of material indexes after each machining operation is complete.

Today screw machines are manufactured with multi-spindles and attachments to perform operations like screw slotting, index drilling, burring, threading, and counter-boring. Single or multiple spindle automatics utilize hydraulic, electrical, or computer numerical controls (CNC). Today automatics are capable of:

Swiss Screw Machining -- The sliding headstock automatic machine was invented and built at Bienne in 1872 by Mr. Schweizer. A year later he added an attachment to the machine for the production of watch screws. In German Schweizer means Swiss, thus, the sliding headstock automatic became known as the Swiss-Type Automatic.

Single spindle automatics have two types of cutting methods. The Swiss type automatics move perpendicularly to the work rotations axis with the work being fed through the cutting cycle. The multiple spindle automatics were introduced in the 1880s and 1890s but didn not come into prominence until World War I (WWI). The war dictated increased productivity needs, greater use of manpower, and more effective layout of floor space. The multiple spindles bar fed machine represents an expeditious way to produce parts from bar stock. The multi-spindle machine can machine 4, 5, 6, 8, or even 12 bars at the same time. When you buy a screw machine you must decide on what machine will turn out the finished work piece at the lowest cost per piece.

Sell-Machine.com ^^