Metal Cutting

Turning Machines

“Turning” defines the work that is traditionally done on a lathe. As lathes have grown in sophistication, some of these machines have been given different names. “Turning centers” is a term sometimes applied to machines with particularly sophisticated capabilities related to secondary spindles and/or rotating tools for milling and drilling. Another term, “turn/mill machines,” describes machines that can be thought of as being just as capable at milling and drilling parts as they are at turning. In turning, unlike in milling or drilling, the workpiece spins while the cutting tool does not. The cutting tool feeds along the length or diameter of the rotating part. The workpiece in turning can be held in a chuck or collet, to name two of the more common workholding methods. The turning machine may also include spindles for the cutting tools to accomplish non-turning operations such as milling and drilling. If this is the case, the machine stops the workpiece from spinning in order to perform these operations within the same machining cycle as the turning work. In fact, for some parts, the milling and drilling capabilities may be used so extensively that a non-turned, non-round part might also be produced on this type of machine. Lathes, turning centers and turn-mill machines can have horizontal or vertical spindles. Horizontal spindles are more common. If the machine has a vertical spindle, then the spindle may locate below or above the machine. If the workpiece rests on a table driven by the spindle, then this machine is generally called a vertical turret lathe, or VTL. If the workpiece is held from above by the vertical spindle, then this type of turning machine is generally called an inverted vertical lathe.

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Inverted Vertical Turning Evolves

By: Lori Beckman
Like most classes of machine tools, inverted vertical turning has evolved since its original design, adding numerous machining capabilities for multitasking.

Automatic Lathe Promotes High Production Rates

By: Edited by Julianne Mobilian
Developed for high-production turning, the 42-mm TNK42 fixed-headstock automatic lathe from Traub produces complex workpieces in large and medium volumes ranging to 250-mm long.

Lathe JobShop Cell.

Automated Cell Enables Easier Operator Access

By: Edited by Julianne Mobilian
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By: Edited by Jedd Cole
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Turning Machines

Turning Machines Feature Spindles Supporting Tight Requirements

By: Edited by Julianne Mobilian
Murata Machinery introduces two Muratec turning machines, the MW80GT and MW120GTEX, as well as a redesigned version of its ML400 machine, the ML400L.


FUJI machines are built for automation from the ground up.
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