Technological Capabilities Extension of Additive Forming Methods Using Parallel-Serial Structures

Purpose of research. Accuracy improving of product forming additive methods is described in the paper. Analysis is carried out; new device design for product forming by additive methods is done on the basis of parallel-serial structure mechanisms. This device design provides rigidity of technological system, increased accuracy of final element positioning of forming system, thus expanding technological capabilities of additive formation. Methods . Formation of parts surfaces by additive methods is characterized by high formation error size (approximation).  It is necessary to ensure orientation of the surface in order to reduce the size at which normal will coincide with the axis of forming system final link at formed surface point. The paper presents results of the analysis aimed at existing structures installation of additive forming devices on the basis of parallel-serial structure mechanisms ensuring high accuracy of final link positioning of forming system. Results. Device design for additive product forming according to 3DMP technology - technology of additive forming with electric arc in protective gases, application of which provides high accuracy of final link positioning of forming system, excludes possibility of rigid consumable material jamming in the form of wire due to design of supply mechanism, which is rigidly fixed on the device base for additive forming. Conclusion. Application of developed device design will make it possible to eliminate disadvantages of existing devices for additive forming, to ensure accuracy of final link positioning of forming system for additive equipment, to exclude possibility of rigid consumable material jamming, thus expanding application field of additive technologies.