# Cp/Cpk ISO parameters

General category

- Name: type the name of the inspection.

- Barcode identifier: it identifies the inspection. If left blank, the identifier corresponds to the inspection name.

- Strategy: select one of the following items:

  - Residual Torque/Angle.

  - Residual Torque/Peak.

- Number of samples: type the number of results to do during the test. The maximum number of samples is 99.

- Minimum Cp torque: the Cp index describes process capability; it is the number of times the spread of the process fits into the tolerance width. The higher the value of Cp, the better the process.

  Minimum Cp Torque ranges from 0.00 to 9999.99.

- Minimum Cpk torque: the Cpk index describes the capability corrected for position of the process capability in relation to the tolerance limits.

  Minimum Cpk Torque ranges from 0.00 to 9999.99.

- Measurement device type: the only measuring device available is STwrench.

- Measurement device S/N: type the serial number of the measuring device.

- Transducer S/N: type the serial number of the transducer, if used during the test.

- Tightening direction: select the tightening direction. The available items are Clockwise and Counterclockwise.

- Torque correction coefficient: type the torque correction coefficient. The value ranges from 0.10 to 99.99.

- Angle correction coefficient: type the angle correction coefficient. The values ranges from 0 to 6553.

Torque category

- Cycle start: the cycle start is the starting point of the test. It must be lower or equal of the Final angle monitoring torque.

  If cycle start is set to zero or not defined, the STwrench automatically sets the value to the Mean load.

- Final angle monitoring torque: the final angle monitoring torque specifies the torque value from which the angle measurement starts.

  The final angle monitoring torque must be lower or equal to the Minimum torque.

  If final angle monitoring torque is set to zero or not defined, the STwrench automatically sets the value to Cycle start.

- Control mode: the control mode selects the condition to control the torque. It is possible to select either Min/Max or Target/Tolerance.

- Minimum torque: minimum value of the torque. By default is the minimum torque defined in the joint configuration.

  It is possible to change the default value typing a new value. This parameter is the available if Control mode is set to Min/Max.

- Target torque: value of the target torque. By default is the target torque defined in the joint configuration.

  It is possible to change the default value typing a new value.

- Maximum torque: maximum value of the torque. By default is the minimum torque defined in the joint configuration.

  It is possible to change the default value typing a new value. This parameter is the available if Control mode is set to Min/Max

- Torque tolerance: the torque tolerance defines the maximum torque and the minimum torque according to the target torque specified. It is expressed in percentage. This parameter is the available if Control mode is set to Target/Tolerance

- Change screw: type the change screw value. The value must be equal or higher than the Maximum torque.

- Unit of measurement: unit of measurement set in the joint configuration.

Angle category

- Residual angle threshold: type the value of the residual angle threshold. The value ranges from 1 to 45.

  This parameter is available if Strategy is set to Residual torque/angle.

- Breakaway angle threshold: type the value of the breakaway angle threshold. The value ranges from 1 to 20.

  This parameter is available if Strategy is set to Residual torque/angle.

- Target angle: type the value of the target angle.

  This parameter is available if Strategy is set to Residual torque/peak.

Time category

- Ratchet time: type the value in seconds of the ratchet time. The value ranges from 0.1 s to 30.0 s

## Applies to: