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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Leadwell TW-8 Dual-Spindle and Turret Turning Center

Turret Turning Center Designed for Automotive Applications

By: Hannah Coombs
Leadwell will showcase its TW-8 dual-spindle and turret turning center.

Tornos Technologies MultiSwiss 6 × 16 Turning Center

Multi-Spindle Turning Center Boosts Productivity

By: Hannah Coombs
Tornos Technologies’ MultiSwiss 6×16 turning center is said to achieve the same production rates as cam-type machines but with quieter operation.

Automatic Cutoff Machine Speeds Carbide Rod Processing

By: Jedd Cole
Rush Machinery offers the Auto-Cut, a CNC cutoff machine for carbide tool and carbide rod manufacturing.

Emco Maier Hyperturn 45 Turn-Mill

Turn-Mill Center Supports Automation Integration

By: Hannah Coombs
Emco Maier’s Hyperturn 45 turn-mill center is designed for applications in automotive and general engineering.

Hardinge Talent 51 MSY Turning Center

CNC Turning Center Features Quick-Change Spindle

By: Hannah Coombs
The Hardinge Talent 51 MSY CNC turning center features the company’s quick-change collet-ready spindle designed for improved part accuracy and surface finish capabilities compared to conventional spindles.


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