More flexibility for plastic injection and 3D printing
With a new software module, a CAD model for plastic injection molding or 3D printing can be corrected directly in the measuring software by post-processing the measurement data. The finished workpiece is then within the specified tolerances.
In plastic molding or injection molding and 3D printing, systematic geometric deviations of the products occur due to the process. The software module FormCorrect is an integral part of the measuring software WinWerth® from Werth Messtechnik in Giessen (Germany) and enables product optimization with the aid of largely automatic correction of the CAD model. Process optimization with often only one correction loop can significantly reduce development costs.
More operating comfort
Now the range of functions has been expanded to allow even more flexibility. The extension of the visualization options grants an increased ease of use. To check the parameter selection, the relevant measuring points as well as the original and expected remaining deviations can be displayed before the correction. Since the correct alignment of the measurement point cloud to the CAD model is a prerequisite for a good correction result, the deviation element can now also be displayed and checked. In addition to the measuring points, other visualization options can be shown and hidden. With the help of the cylinders for point selection, the resolution of the correction can be checked. The arrows within the cylinders show the respective deviation and can also be hidden for a clearer display.
Correction process becomes clearer
In the expanded version of FormCorrect, elements that are not functionally relevant, such as lettering and ejector marks, can be excluded from the correction. Multiple measurements can now also be taken into account when calculating the deviation element, so that efficient correction with small remaining deviations from the CAD model is possible even in the case of a large process scatter. The correction can be performed after the parameter definition for all desired patches. The separation of the two processes allows a better overview of the correction process.
Plastic molding: Correction directly on the mold CAD model
In addition to the workpiece CAD model, the correction can also be performed directly on the tool CAD model. In this case, too, the measured deviations of the workpiece from the workpiece model are mirrored on the latter to calculate the deviation element, since a corresponding surface exists in both models. This is the surface where the workpiece and mold touch during injection molding. The difference between the correction of the workpiece model and that of the mold model is therefore only whether the material must be removed or added. For example, if the workpiece is too wide, material must be removed from the workpiece and material must be added to the mold.
Source and further information: Werth measurement technology
