Schaublin’s modular 8-axis 202TG performs simultaneous turning, milling and grinding

The Schaublin 202TG can reduce set-up and cycle times by carrying out three operations in one machine tool simultaneously, and can provide a flexible solution for use either in a production environment, or for small batch runs and prototypes. The 202TG offers a machining diameter capacity of up to 80 mm with a maximum machining length of 160 mm. The headstock offers a maximum through-bore of 19 mm and a continuous headstock torque of 35.1 Nm with a spindle speed capability of up to 7,000 rpm. The stroke of the X1-X2 and the Z1-Z2 axes is 160 and 300 mm respectively with the ability to reach working feedrates of 8 m/min. The 2020TG's modular flexibility is enhanced by its ability to accept collets and chucks for workholding, and is easily integrated into an automated environment with a bar-loading facility and an unloading arm or conveyor if required. The 202TG has spindle and servo motor cooling to prevent thermal instability and to maintain accuracy on long production runs. The spindles are driven by synchronous motors that can start, hit top speeds and stop very quickly. The cross slide with glass scales delivers a resolution of 0.0005 mm. All moving parts are fully protected against abrasive powders and materials that might otherwise create friction and wear in response to concerns about incorporating a grinding facility in a machine that performs milling and turning operations. The optional revolving tool turret employs a VDI16 system that accommodates up to 12 tool positions with up to six tools having driven capability. The turret has a maximum rotational speed of 6,000 rpm and 7 Nm torque. Further options include internal and external grinding spindles both controlled by a synchronous motor. The internal spindle offers a maximum speed of 60,000 rpm and a power output of 6 kW, while the external grinding spindle has a maximum speed of 25,000 rpm with a power output of 7 kW. The 202TG incorporates a chip conveyor system for removal of chips. Grinding waste is controlled in the 300 litre coolant sump that has paper filtration for waste as small as 10 to 20 microns.