SPC software (statistical process control)
SK-go!® interface
Schwer + Kopka GmbH
The usual SPC inspections (staistical process control) in high volume manufacturing typically take place within prescribed
firm time intervals. Whether the machine has at all produced in this time frame is normally not of interest. In addition, there is
no indication available at the machine when the next SPC measurement will be due. This leads to a situation where SPC measurements are either conducted without being due, performed too late, or totally forgotten.
We have interfaced our SK-go!® production data recording system with several leading CAQ-systems which ensures that SPC
measurements are only triggered off when they are really due. It is no longer the elapsed time since the last inspection, but it's
the true machine up time or produced quantity as recorded by SK-go!® which initiates the next SPC inspection.
The machine operator will automatically get a message popping up on the screen of his machine terminal when the next
inspection is required. If the SPC measurement is not performed within a certain time frame, or if the recorded measurements
are out of tolerance, the machine can even be stopped automatically if desired. Only another good SPC inspection will free the
machine up again. This compulsory procedure guarantees that all SPC measurements only take place when required, and
therefore are done in the most economical way. A joint documentation chart which shows the machine up/down-time graphs
and the times of SPC checks can be recalled at the push of a button.
firm time intervals. Whether the machine has at all produced in this time frame is normally not of interest. In addition, there is
no indication available at the machine when the next SPC measurement will be due. This leads to a situation where SPC measurements are either conducted without being due, performed too late, or totally forgotten.
We have interfaced our SK-go!® production data recording system with several leading CAQ-systems which ensures that SPC
measurements are only triggered off when they are really due. It is no longer the elapsed time since the last inspection, but it's
the true machine up time or produced quantity as recorded by SK-go!® which initiates the next SPC inspection.
The machine operator will automatically get a message popping up on the screen of his machine terminal when the next
inspection is required. If the SPC measurement is not performed within a certain time frame, or if the recorded measurements
are out of tolerance, the machine can even be stopped automatically if desired. Only another good SPC inspection will free the
machine up again. This compulsory procedure guarantees that all SPC measurements only take place when required, and
therefore are done in the most economical way. A joint documentation chart which shows the machine up/down-time graphs
and the times of SPC checks can be recalled at the push of a button.
