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Process-Machine Interaction in Sheet-Bulk Metal Forming
Key Engineering Materials, 2012The present contribution deals with the process-machine interaction and its impacts on the workpiece quality by forming parts with sheet-bulk metal forming. It focuses on the manufacturing of complex asymmetrical parts with functional elements. The functional applications of these elements such as fixation, motion and load transmission require ...
Bernd-Arno Behrens +2 more
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Sheet-Bulk Metal Forming of Symmetric and Asymmetric Parts
Advanced Materials Research, 2013The unique process of sheet-bulk metal forming (SBMF) represents a combination of sheet and bulk metal forming by inducing a three-dimensional material flow in sheet metals in a single forming stage. Within this paper two different applications of sheet-bulk metal forming are demonstrated.
Valerian Salfeld +4 more
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Preshearing influences on sheet-bulk metal forming of aluminum gear
Journal of Materials Processing Technology, 2020Abstract Shear-cutting methods are more efficient than machining methods for preparing billets from sheet metal. In this study, several shearing methods were applied to prepare semi-finished billets for sheet-bulk metal forming of duplex gears. The influences of shearing features such as fracture, roll over, and grain flow lines on subsequent forming
Xiaolong Sun +5 more
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Lightweight joining of polymer and polymer-metal sheets by sheet-bulk forming
Journal of Cleaner Production, 2017Abstract This paper presents an environmentally friendly joining process based on sheet-bulk plastic deformation to connect two polymer (or a polymer and a metal) sheets perpendicular to one another. The methodology draws from material characterization and finite element modelling, using an extension of the flow formulation to pressure-sensitive ...
Bragança, Ivo +3 more
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Tribological measures for controlling material flow in sheet-bulk metal forming
Production Engineering, 2016Sheet-bulk metal forming (SBMF) is characterized by successive and/or simultaneous occurrence of quite different load conditions regarding stress and strain states. These conditions significantly influence the material flow and thus the geometrical accuracy of the components. To improve the product quality a control of the material flow is required. An
Maria Löffler +15 more
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Machining of Molds with Filigree Structures for Sheet-Bulk Metal Forming
2020In this article investigations on micromilling of hardened tool steels as well as developments for an efficient process design are presented. In the course of this, suitable parameter ranges as well as process instructions are given, with which stable micromilling processes of hardened tool steels can be achieved.
Alexander Meijer, Dirk Biermann
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Experimental and Simulative Investigations of Tribology in Sheet-Bulk Metal Forming
Key Engineering Materials, 2015Friction has a considerable influence in metal forming both in economic and technical terms. This is especially true for sheet-bulk metal forming (SBMF). The contact pressure that occurs here can be low making Coulomb’s friction law advisable, but also very high so that Tresca’s friction law is preferable. By means of an elasto-plastic half-space model
Florian Beyer +5 more
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Mechanism-Based Modelling of Wear in Sheet-Bulk Metal Forming
2020Friction characteristics and wear of sheet-bulk metal forming tools featuring microstructured surfaces are simulated on the mesoscale. Computational homogenisation is used for surface cut-outs on which the structures are geometrically resolved and where friction laws model lower scale roughness. Two approaches are presented for the modelling of wear. A
Markus Schewe, Andreas Menzel
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Amorphous Carbon Coatings for Sheet-Bulk Metal Forming Tools
2020Sheet-bulk metal forming processes are commonly characterized by temporally and locally varying stress conditions, likely to affect material flow during forming and therefore the geometrical accuracy of formed parts. Local modifications of friction conditions can contribute to control the flow of material and simultaneously to reduce process forces and
Tim Weikert, Stephan Tremmel
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Holistic dimensional measurement of sheet-bulk metal formed parts
Optical Metrology and Inspection for Industrial Applications V, 2018Due to recent developments in sheet-bulk metal forming processes, holistic measuring systems are required which provide reliable results for the measurement of all relevant formed part features. The presented multi scale multisensor approach, which combines several fringe projection sensors of different measuring resolutions and ranges, accomplishes ...
Tino Hausotte, Sebastian Metzner
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