Method for monitoring a production process

US8676369B2 · kind B2 · utility

Assignee

• MTU Aero Engines AG · DE

Inventors

• Martin Eckstein · Herrsching am Ammersee, DE
• Guenter Breitkopf · Munich, DE

Key dates

• Filing date: Aug 4, 2007
• Grant date: Mar 18, 2014
• Expiry date: Oct 25, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P90/02
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method for monitoring a production process with regard to quality is disclosed. The method includes: a) breaking down the production process into a sequence of individual steps, defined by a sequence of control commands for a production program for carrying out the production process on a machine tool; b) generating at least one signal template per individual step of the production process from the control commands for the individual steps, each signal template corresponding to a theoretical signal curve for a parameter which may be measured upon executing the production process; c) measurement of a signal curve for at least one parameter per individual step during the execution; and d) comparison of the or each measured signal curve with the respective arithmetically generated signal template, wherein a qualitatively poor production process is determined if the measured signal curve deviates from the signal template by more than a given tolerance.