Continual loading and press deburring occur in parallel during machining time.
Separate machine operations take place on two machine tables, each able to swivel 180 degrees and easily accessible: roughing in two phases, pressing, and finishing. After the blank is locked in and tightened, it is swivelled and the first cut of the gear takes place on table 1, while on table 2, the chamfer is produced by pressing. After another swivel, finishing takes place in order to eliminate the bulging that occurs as a result of pressing. The finishing process is key to this cycle: it is a stand-alone process not subject to crossover impacts generated by a parallel process on the neighbouring table.
“We chose this strategy, since external mechanical encumbrances should be excluded during machining, especially during the precision finishing process. The quality of the components, of the flanks in particular, and the reliability of the process as a whole benefit from this,” explains Dr.-Ing. Hansjörg Geiser, Manager Development and Design Gear Cutting Machines at Liebherr-Verzahntechnik GmbH. The blanks are loaded from the attached palletiser cell, where they are stored in baskets, as per the automotive standard.
Source Liebherr Group