The VLC 200 GT: hard machining of chucked components up to 200 mm (7.87 in.) diameter

The VLC 200 GT uses diverse machining technolgies to minimize cycle times. Where component quality and process integrity are required, all sections of the workpiece that can be turned with process integrity are hard finish-turned (after having been hard pre-turned). This machine achieves high component quality and increased productivity in a single set-up. After the hard pre-turning process the workpiece will be a few micrometers oversize, which will then be removed by the subsequent grinding operation.

This ensures minimal grinding wheel wear, as the grinding process will remove little material, meaning the wheel will rarely need to be dressed. This is an enormous advantage to cycle times. The grinding wheel specification can be chosen to suit the finishing quality required. It is possible to achieve surface qualities ranging from, Rz < 1.2 µm with great process integrity. For the machining process itself the user has access to all the EMAG technologies: internal and external grinding spindles, scroll-free turning tools, block tool holders, or the well proven 12-station turret. With the VLC 200 GT the user can implement the optimal process combination for each application and every workpiece.