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10.1.4 Friction Value Package (optional)
10.1.4.1 Friction Value Measurement
The function of the screwing sample is the tightening of a screw, while considering the
friction value prior to the head connecting to the surface.
Sequence of the screwing sample
Figure 40: Friction Value Measurement
Switching off criteria:
The measuring process is ended once the
• end of the measuring range is reached
• a monitoring criteria is reached
• the maximum screwing time (monitoring time) is expired
Analysis:
OK evaluation:
The screwing level is considered OK (fault free), if the friction value has been
determined and the value of the torque is in the set limits.
Not OK analysis:
The screwing level is evaluated as Not OK (faulty), if the friction moment in the
monitored window is outside the set limits or the determined friction value is out
side the indicated limits.
The screwing level is also evaluated as Not OK when the monitoring time is
exceeded.
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