International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Contactless techniques for evaluating pressing shapes, as part of the Industry 4.0 framework, are increasingly adopted in industry. Springback assessment is critical for verifying the final geometry of automotive body panels. Although 2D photogrammetric methods have been in use for over a decade, 3D optical surface-scanning systems are now preferred due to their superior accuracy. This study evaluates cylindrical pressings with flat and hemispherical bottoms, fabricated from 1.6 mm thick DP800 dual-phase steel. Thickness distribution was measured using the GOM Scan 1 device. Experimental results were compared against numerical simulations performed in PamStamp software, employing the Vegter Lite yield criterion and Krupkowski hardening law. Real cups (50 mm diameter) were deep-drawn from 90 mm blanks on an Erichsen 145-60 testing machine, with plastic foil lubrication. The thickness profiles obtained from scanned data were directly compared with simulation predictions to assess model accuracy and springback behaviour.

This article analyses the widths and thicknesses of the test specimen after operating the punch before sharpening the guillotine blades. The principle of operation of a 3D computer tomograph with an accuracy of 3μm is considered. The analysis will be performed in two ways: by using a micrometer and a caliper and by using a 3D computed tomography for determining the width and thickness

In the present article, a comparative analysis of the widths and thicknesses of a test specimen prepared by punching a hydraulic press before and after sharpening the guillotine blades is made. The types of characteristics of the punch are considered. The comparative analysis was performed by a non-destructive method using a 3D computed tomography.