Walther Trowal builds largest multivibrator in company history

The first vibratory finishing system of the new generation from Walther Trowal will machine blisks ("Blade Integrated Disks") for aircraft engines. With these, the quality of the surface is decisive to a large extent for the efficiency of the flow around them and thus for efficiency, fuel consumption and noise development. The customer, who will receive the first system, has opted for vibratory finishing, as it is essential to obtain smooth surfaces for blisks without, however, rounding the shape of the edges too much. With a maximum workpiece diameter of 1,300 mm, the MV 50 is also suitable for planetary gearboxes for wind turbines, for engine parts where internal machining is important, or for die forging tools for which vibratory grinding machines were not previously available.

The new system is designed for automatic operation: Once the workpiece is fixed in the work bowl, no manual action is required. This significantly increases the reproducibility of the process. The system also saves time, as the vibratory finishing process will only take two to three hours. Christoph Cruse, the sales director at Walther Trowal, has the special conditions of the aerospace industry in mind: "Particularly in the production of parts for aircraft engines, all manual operations must always be viewed critically, because the quality of the machining is not reproducible. With the new, automatic machine, we ensure that all surface elements are machined uniformly. In addition, we reduce the machining time of each blisk from several days to a few hours." For vibratory grinding of blisks, Walther Trowal uses AF grinding wheels. They produce extremely low surface roughness coefficients for the materials and geometries typical of blisks. The first system is to be delivered to a customer in the aerospace industry in September.