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10
Screwing Samples and Commands
10.1 Screwing
Sample
10.1.1 Screwing / loosen to Torque
The screwing sample screwing application / loosen to torque is a tightening / releasing
process with deactivation to the torque. An angle monitoring is possible as an option.
Figure 36: Screwing Application to torque
Sequence of the screwing sample:
At the start of the screwing level the time monitoring is started. Cyclic torque
measurements are performed. If the angle of rotation monitoring option is activated then
angle measurements are performed additionally starting at the selected swell torque.
Switching off criteria:
The screwing process is ended once the
• cut-out torque is reached
• the maximum screwing time (monitoring time) is expired
• the maximum angle of rotation is reached (only for angle monitoring)
Analysis:
OK evaluation:
The screwing level is considered OK (fault free), if the switching off occurs via
the moment and the value of the torque is in the set limits.
On the angle of rotation monitoring option the reached angle must be within the
set limits.
Not OK analysis:
The screwing level is evaluated as Not OK (faulty) if the torque is outside the
set limits or the screwing time has been exceeded.
On an active angle of rotation the screwing level is evaluated as Not OK, if the
angle of rotation is outside the indicated limits.