Summary
Up until now, automated cleaning devices in foundries have only been available for full-production runs and for certain parts with small dimensions.
Within the scope of a research network, a device for automatic cast iron cleaning should be developed, which can also be used efficiently with smaller quantities. The device should also have an adaptive, image evaluation capability for locating contours. The concrete aim of this part of the project was to conduct basic research on the processing of geometric data from the blurred image recognition information of spatial objects, as well as on 5D control of movement from the tool to the cast iron part for gouging.
Results:
The developed concept envisages that a camera placed on the Z-axis will be able to take a photograph using laser illumination produced by the light-section procedure. From a data processing point of view, it is also essential that the camera is moved in the free space around the work piece in such a way that the camera line is always parallel to the normal of the surface. When circling the part, the current distance from the tolerance-afflicted surface of the part is ascertained through use of the light-section procedure. In addition, the CNC control unit divides the path into sections of equal size, and triggers an impulse for image recording in each section. After the part has been circled, the information derived from the separation distance values is transferred to the CNC control unit as a correction value of the theoretical contour of the unfinished part.
