At issue was the case for tension screws for the common rail injection systems for a specialist automotive supplier. The production from 25 CNC automatic lathes runs through a single test bench. A rotary indexing table feeds the components to the test stations, where cameras, lasers, and spreading fingers check the dimensions in 2.6-second cycles. If the machine fails, inspections need to be performed by hand−which is costly, time-consuming, and occurs approximately every four weeks.
This is when regular maintenance of the pneumatic rotary indexing table takes place as the short cycle times push the table to its mechanical limits.
Additionally, after one month the shock absorbers and parts of the mechanics need to be replaced by Geissler’s in-house custom machine building department; which also designed and built the test bench. This frequent maintenance was taken into account during the development as the rotary indexing table was kept easily accessible so that the shock absorber unit could be replaced quickly.
These collective factors lead Geissler to realize it was time to replace the entire rotary table. To achieve the required cycle times, the whole thing needed to be operated electronically−which is where WEISS came in.