If a lathe really wants to operate within tight production tolerances, i.e. significantly smaller than five micrometers in series production, then all disruptive influences, for example from turrets, additional Y-axes and unnecessary heat sources, must be avoided. In addition, as few axes as possible should be used in the decisive process.

This offers a concept with a linear tool carrier without indexing turret and a two-axis cross slide, as used in Spinner's previous ultra-precision lathes. This basic principle of physics can also be found in the new Spinner Microturn. The difference is a long stationary carrier table integrated into the machine bed, on which the turning tools as well as heavier special attachments such as grinding spindles or high-speed drilling spindles can be mounted. Opposite the tool carrier, the spindle moves in two axes on a high-precision cross slide, which is optimized in its positioning accuracy and thermal path for the finest positioning behaviour.

Customers who produce smaller series naturally want flexibility, fast set-up and universal milling options and therefore require a turret. An optional turret at the bottom of the work area with an integrated Y-axis is available for this purpose. However, this is completely independent and can be used for universal machining operations such as pre-machining. Fine machining can still be carried out on the linear tool carrier - without restrictions due to switching errors or thermal run-out of the turret and the positioning behavior of the Y-axis.

As a further expansion stage, the company offers a milling head at the top of the working area with an additional Y-axis and a milling spindle that can be swiveled as a B-axis with more than ten kilowatts of drive power, a milling speed of 12,000 revolutions per minute and a tool magazine with up to 72 tools in HSK40.

On the spindle side, several variants are offered in different speed ranges up to a maximum of 10,000 revolutions per minute - each as a water-cooled motor spindle with modern synchronous drive technology up to a maximum spindle clearance of 52 millimetres. The spindles are an in-house development and are manufactured as the heart of high-precision lathes in the factory near Munich.

The latest version of the Siemens 840D-Solutionline with "Spinner-Touch-Panel 4.0" based on a 24-inch screen is offered as the control system. The height and inclination of the ergonomically designed operating units can be individually adjusted to suit the operator. Robot automation modules are also available for the automatic loading and unloading of workpieces for larger series. as

Intec, Hall 3, Stand A12