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Figure 39: Loosening on Angle
Sequence of the screwing sample:
At the start of the screwing level the time monitoring and the angle measuring is started.
Cyclic torque measurements are performed.
Switching off criteria:
The screwing process is ended once the
• switching off angle is reached
• the maximum screwing time (monitoring time) is expired
• the max. torque is reached
Analysis:
OK evaluation:
The screwing level is considered OK (fault free), if the switching off occurs via
the angle of rotation and the value of the angle of rotation is in the set limits.
Furthermore, the torque value must be within the set limits.
Not OK evaluation:
The screwing level is evaluated as Not OK (faulty) if the angle of rotation is
outside the set limits or the screwing time has been exceeded.
Parameter:
The following parameters are used in the screwing sample:
• Maximum time until the switching off angle is reached (monitoring time)
• Switching off angle, switching off angle min / max
• Torque min/max angle
• Rotation speed
• End value creation: End torque/maximum torque
Selectively the result torque can be displayed as end torque (torque at end of
screwing) or the maximum torque (maximum occurred torque) in the end values.
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