A Swiss-type lathe, also known as a Swiss-style or a Swiss automatic lathe, is a type of CNC (computer numerical control) lathe that is specifically designed for high-precision, small-diameter workpieces. It is characterized by a small, compact size, high precision, and the ability to work with a wide range of materials.

Swiss-type lathes typically have a small footprint and a compact design, with the cutting tool and the workpiece both moving simultaneously to produce the desired shape. The cutting tool is mounted on a sliding headstock that moves along the axis of the workpiece, while the workpiece is held in a chuck that rotates on its own axis.

One of the main feature that sets Swiss-type lathe apart from traditional lathes is the ability to perform multiple operations in a single setup, this is achieved by the ability to use multiple slide tools which can perform turning, drilling, milling and other operations. This feature makes it more efficient and versatile, especially in mass production of small and complex parts.

Swiss-type lathes are widely used in the production of small precision parts, such as those used in the medical, aerospace, and electronics industries. They are able to produce parts with very tight tolerances and fine surface finishes, and are also well suited for working with materials that are difficult to machine, such as titanium and other exotic alloys.

Swiss-type lathes are controlled by a CNC controller that reads G-code, like other CNC machines, which provides instructions for controlling the movement of the cutting tool and the speed and feed rate. They also have automatic bar feeders, which allows for continuous machining of parts without interruption.

Overall, Swiss-type lathes are high precision and automated machines that are designed specifically for small-diameter workpieces, They can perform multiple operations in a single setup and have the ability to work on difficult to machine materials, making them versatile and efficient for mass production of small and complex precision parts.