HANNOVER MESSE 2019,
01 - 05 April
If damage occurs in press lines in critical components such as the main drive, the hydraulics of the die cushion or the press transfer, the press comes to a standstill, which causes high cost due to repairs and loss of production. In order to avoid unscheduled standstills, systems of condition monitoring are increasingly applied. Using signals coming from sensors or measurements from the control unit and drives, they create damage predictions.
Smart Stamp is one part of such a condition monitoring system for presses and performs monitoring of the main press drive in order to verify whether permissible values are being adhered to regarding press force, overturning moment and tilting of the ram.
Today, modern press drives are mainly based on servo-electric drives. Several torque motors with eccentric crank gears generate the movement of the ram along the guides. The force transmission to the ram takes place via several pressure points of the drive. The eccentrically distribution of the process forces in the forming tool depends on the stroke, leads to overturning moment in the ram and causes the ram to tilt. Smart Stamp detects and visualizes these physical variables. Thus overload of the press can be avoided. It is possible to identify forming tools that load the press improperly, which causes increased wear. At the same time, Smart Stamp is a “fingerprint” of the forming process for the specific forming tool on this defined press. Changes in the press setup or wear in the forming tool can be detected as a tendency.
Fraunhofer IWU is set to present this Technology at the Hannover Messe in hall 17 booth C24.
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