Automated Process Control (APC)

The Automated Process Control is used to automatically adjust the machine tools.
What’s the APC?
The APC is a concept invented under the direction of Pr. Maurice Pillet by the laboratory SYMME Research Center at Savoie Mont Blanc University. It is an evolution of the SPC (Statistical Process Control) and consists of using computer resources to control a production process in order to obtain better quality results than with a traditional SPC.
One piece can fully adjust your production


Whatever the complexity of the part, turning, milling or combined, Ellisetting automatically calculates the setting of each machine tool. The automation of the adjustment process is done from a configuration file that can be built either:

  • From the unit impact of each tool
  • From a three-dimensional measurement file of the part

Adjustment time minimized

By automating the adjustment, it only takes one piece to adjust a machine. The adjustment time is reduced to a minimum and increases the running time of the machines.

For example, a gearbox housing that takes half a day of adjustment before setting up the APC is now settled in 30 minutes (production cycle time).

Adjustment piece reduced to one

The APC minimizes the number of adjustment pieces. While the scrap rate due to the adjusting pieces is usually 1 to 3%, Ellisetting divides itself by 3.

%

Reject rate reduction

Adjustment piece

Day of formation

Training of the adjusters in one day

Applying Automated Process Control is particularly simple. It only takes one day to train a trimmer to use it.

Maximized quality indicators

The APC makes it possible to considerably reduce the number of parts out of tolerance compared to a conventional piloting. Experience shows that the scrap rate due to out-of-tolerance parts is greatly reduced. The APC makes it possible to obtain Ppk quality indicators higher than 1.33 for all the characteristics.

The APC fits into the digital chain

Ellisetting makes it possible to connect measurement tools (optical, probing, micrometer, etc.) and machine tools. It transmits the adjustment information directly from the measurement of the part.

APC learns from its own corrections

The Ellisetting algorithm is so powerful that it can be thinner than a traditional SPC setting. The process is potentially corrected for each measurement to limit process drifts and the system learns from its own corrections to improve over time.To limit the impact on the operators, it is also possible to choose the maximum number of correctors to correct.

 

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