Design flexibility for press-fit machines

Paul Boughton

Kistler's new generation of electromechanical NC (numerically controlled) joining modules NCFH (such as the Type 2151B…) are compact and precise for a wide variety of force displacement monitored press-fitting and joining tasks.

Despite an overall height of only 475 or 795mm, these modules offer a stroke of 200 or 400mm, which enables them to reach even deep end points, such as bearings in half-shell gearboxes. The high speed of up to 300mm/s offers a quick return stroke and hence short machine cycle, even for a long idle stroke. Being capable of exerting both tension and compression forces provides machine builders with considerable design freedom. The force signal employed by the force-displacement monitoring system can be used to control movement in highly specialised operations. This increases the application versatility of the electromechanical NC joining system. Spring elements, for example, can be loaded to specific values or their settlement controlled continuously.

Two central lubrication connections for guide and bearing ensure very low-maintenance operation and the threaded spindle drive is permanently lubricated. As the active buckling compensation system eliminates the effect of bending of the customer's assembly, the positional accuracy is no longer influenced by the force. The standard holding brake allows the use of particularly heavy tools and prevents the ram dropping when the module is switched off.

NCFH

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