Multi-spindle automatic CNC lathes provide for the simultaneous machining of several workpieces in one machine with a high productivity. If the feed axis crashes, for instance because of incorrect operation or incorrect programming, it is damaged, resulting in an operational standstill of the whole machine. In order to prevent such an incident that involves great effort and cost, specially designed RINGFEDER® friction springs are used, reliably protecting the drive spindle against overload-related failures. Friction springs only take up a very small installation space, respond within a few milliseconds and are ready for operation again immediately after being loaded. Even in the unlikely case that one of the damping elements within the spring is damaged it will still remain functional and can be repaired in the course of the next regular maintenance interval.
Manufacturers set exceptionally high standards with regard to the quality of the connection between the main spindle and the drive of a machine tool: In order to ensure perfect operation of the machine, the connection must provide zero backlash and must be easy to establish. Furthermore, it must meet essential damping functions and compensate various types of misalignments. Specially designed RINGFEDER® elastomer couplings meet these requirements and are therefore the preferred choice of globally leading machine tool manufacturers. Moreover, they also bank on top-quality and durable RINGFEDER® locking devices such as locking assemblies or shrink discs. These backlash-free shaft-hub connections contribute to constantly achieving maximum precision with regard to the components to be manufactured.