Gear grinding machine SG 160

workpieceCNCwith linear motor

The SG 160 SKYGRIND is the first gear dry grinding machine in the world. It ensures cycle times for finishing of gears that are perfectly in line with the automotive industry at a lower cost compared to traditional manufacturing solutions. First Gear Dry Grinding Machine in the World The SG 160 SKYGRIND is the first gear dry grinding machine in the world. This state-of-the-art process eliminates the need for cooling oil during the hard finishing grinding of the toothed gear after the heat treatment. On the SG 160 SKYGRIND machine the process is split in two main passes: roughing and finishing. For the roughing process skive hobbing is implied, whereas worm grinding is used for the finishing process. The SG 160 SKYGRIND removes about the 90% of the stock allowance with the first pass using a hobbing tool, which has the advantage of not heating the workpiece excessively. Subsequently, with the second finishing pass, a grinding wheel removes the remaining stock without causing problems of overheating the workpiece, therefore resulting in a completely dry process. Moreover, its innovative structure with two spindles actuated by linear motors and the use of more channels simultaneously ensure a time of chip-to-chip of less than 2 seconds. The SG 160 SKYGRIND splits the X-axis of traditional machines into two linear slides (X1, X2), each of which carries tools spindles. In this way both workspindles are under full position control any time. Being driven by high dynamic 30 m/s linear motors, changing spindles come down to less than 2 seconds including simultaneous repositioning of the tools with the Y-Z-A axes.