WIPA

Device for quality monitoring of semi-finished products in the manufacturing process

The application is a device, which tests the geometrical size accuracy of semi-finished products and stores the measured actual values in a quality database (Q-DAS). The transferred data sets are then used by quality management for statistical analysis. If the measured semi-finished product is alright, a production approval is given the production line. Controlling is carried out via Siemens Simatic S7-315 PN/DP.

Operation procedure:

  • Logging in the user via magnetic key card. PLC creates SQL query "employee base". The query result is the employee name, first name and authorisation (operator, fitter, service)
  • Selection of the current product via the HMI panel, alternatively via the employee number (the ERP knows which employee is currently producing which product.)
  • Loading the actual values and tolerances referring to the current product number.
  • Inserting the semi-finished product and approval for use of the device.
  • Measurement of actual values and writing the data into a QDAS database (date, time, employee, product number, actual values (mass, ambient temperature, status (o.k./not o.k.), etc.).
  • If semi-finished products o.k. then production approval


Technical data:

Note:

The applications involve examples which demonstrate the possibilities of a PLC/SQL database. It is always possible to modify solutions.For reasons of data protection, pictures and technical details were not included. We are, however, happy to be at your service for any queries.

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