The blanks are marked with a laser while the material is running. Once this has been done, each board can be assigned the raw material data (coil), the collected parameters of the previous process steps and the collected data of the following process steps. From this point on, each board is "SMART" and from this point on is equipped with unique (quality) features. 4 laser heads can mark simultaneously. The depth of the font is 10 μm .
Contour measurement of blanks
To avoid faulty production or rejects, various contour features can be recorded at this point with the aid of an optical contour measurement directly after the pressing process of the blank. These can be the defined number, the relative position, the dimension as well as internal and external features and also the shape and position of the components. Depending on the requirements and characteristics, these values are recorded and further processed.
Tensile strength, surface roughness, strip thickness measurement
If these values are not available from the manufacturer when the coils are delivered, corresponding sensors or devices for their acquisition can be installed at the plant. With the evoTrQ system these are tapped, integrated, visualised and made available for evaluation. The measuring systems can also be delivered turnkey by evopro.
Oil film thickness measurement
To ensure production accuracy, it is necessary to have the required oil film in the right places during the pressing process. This requires exact and even oil film thicknesses on the blanks, which can be measured and also assigned to the coil. The oil film thickness cannot be supplied with the coil, as there is a redistribution during winding and storage. Evopro also has the know-how for the turnkey integration of a measuring device.
Straightening machine parameters
Here, different values for equalisation and alignment of the different coils are generated and recorded by the machine. By adopting these values in the evoTrQ system, these quality parameters are attached to the respective board.
Combination of board data with stack data
The blanks coming from the coil line are temporarily stored before further processing. Data collected by evoTrQ provides information about the stack on which individual blanks are located and whether changes in material properties, e.g. due to coil changes, have taken place within a stack.
Equipping of the press
Process steps such as the loading of the forming press with blanks marked by evoTrQ are reported as events to the system and can be retrieved later.
Brush unit, re-oiler
The spot lubrication can be controlled with the information from the board, e.g. about the state of lubrication. It is also possible to determine the position of the board on the conveyor and to inform the spot lubrication about the displacement of the board. In this way, it can be ensured that if the board is moved, the oil really hits the spot where it is to be re-lubricated.
Drawing stage parameters
evoTrQ captures the settings used by tools during processing, such as the configuration of drawing stages and rams.
Neben den Materialeigenschaften des Bauteils bleiben so auch Anlagenparameter der einzelnen Verarbeitungsschritte stets rückverfolgbar.
The SmartCam extends the evoTrQ ecosystem with configurable quality checks such as draw-edge measurements and complements visual inspection.
Komplexe Bildverarbeitungsschritte können als grafische Workflows konfiguriert und an den evoTrQ Datenhaushalt angebunden werden.
Ideally, the already "smart coil" is delivered with the information provided from production, such as width, thickness, material properties, roughness, etc. The data has already been saved in a cloud by the supplier . There they can be called up from the coil, accurate to the metre, via a label or code on . The code is read with a camera and added to the system. This can also be done manually. Please note that the code applied in the middle and with ink is washed off on the coil and is not available on every board after cutting. Furthermore, it should be noted that if, for example, two boards are cut in parallel, not every board will contain the code.
The various OEM's have different methods for crack detection. Typically, cameras are used as well as different types of lighting. The transmitted data are also taken over and assigned to the board.
In the meantime there is also a tool called evoVIU from the evoTrQ construction kit, which can be used for local crack detection.
Stacking of the finished parts on transport containers
The operator or a robot stacks the pressed parts in a box. A camera system reads both the number on the board and the box number. This ensures further tracking of the parts. The higher-level logistics system receives information from evoTrQ about which pressed parts are in which box and, of course, which properties they have. Using a handheld camera system, the operator can read the box number and view the contents.
Storage and distribution
Components tracked via evoTrQ are now enriched with a variety of information. If defects are detected in subsequent steps, material properties and processing steps can be traced in their respective parameterisation and assigned to the stored components. This process knowledge enables detailed fault analyses and helps to identify affected components in the warehouse. Using a handheld camera, each employee can directly see the number of
the system reads the contents of the transport container and immediately knows which material with which data is stored in the box.