On the Kinematic Structure of Cold Forming Machine-Tools with Several Main Effector Elements

Abstract:

The evolution of modern industrial society is based on the conceiving of new, high-performance machine-tools, with an emphasis on cold forming ones. Identifying new constructive and/or kinematic solutions is one of the modalities ensuring the desired progress.Machine-tool kinematics is a field allowing for the synthesized representation of the often complex structures of existing machines, thus facilitating their study upon removal of less non-essential details [, as well as for conceiving new machines starting from imposed requirements reflected in adequate kinematic structures together with their necessary logical links.Cold-forming machine-tools are a most widespread and useful category, particularly for series and mass production. Their kinematic structure is typically simple. The specific kinematics of new types of cold-forming machines, many specialised or special, is rarely addressed.A particular class of cold-forming machine-tools includes presses with several main effectors elements. In addition to the well-known double or triple action mechanical presses, quite characteristic for this category are certain automatic mechanical presses. The paper addresses the kinematics of hypocycloid automatic presses [2,, a sub-class of machine-tools developed innovatively over the last two decades following research conducted a Transilvania University of Braşov, Romania.

• Periodical: Applied Mechanics and Materials (Volume 657)
• Pages: 111-115
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.657.111
• Online since: October 2014
• Authors: Romeo Cioară*
• Keywords: Automatic Press, Kinematic Structure, Main Linkage, Press

References

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[2] M. Weck, Werkzeugmaschinen, VDI Verlag, Düsseldorf, (1988).

[3] V. Tabără and I. Tureac, Machines for Cold Forming (in Romanian), Didactică şi Pedagogică Publishing, Bucureşti, (1984).

[4] R. Cioară, Theoretical and experimental contributions on kinematics, dynamics and construction of a main hypocycloid trajectory mechanism used on high productivity automatic presess (in Romanian), Ph.D. thesis, Transilvania University of Brasov, (1998).

[5] R.A. Răceu, Innovative Research on the Development of New Automatic Presses (in Romanian), Ph.D. thesis, Transilvania University of Brasov, (2012).

[6] R. Cioară, RO Patent 109, 825 (1996).

[7] A. Răceu and R. Cioară, RO Patent application A_00328_2011.

[8] R. Cioară, About structure of the main linkage on cold forming machine-tools. Proceedings of the 13th International Conference Modern Technologies, Quality and Inovation, Iaşi-Chişinău, ModTech 2009, New Face of T.M.C.R., ISSN 2066-3919, Eds. Dumitru Nedelcu, Laurenţiu Slătineanu & Sergiu Mazuru, 21-23 May, 2009, Iaşi, Romania, pp.147-150.