Methods to Increase the Rigidity of the C-Frame of a Press

Abstract:

Reducing exploitation energy consumption for any technical system is an effective way, which is in complete accordance with the concept of sustainable development [1]. The presses, particularly the mechanical ones, are machine tools with a long-term exploitation [2]. At these ones, the operating energy consumption, significant in value, decreases only if the rigidity of the structure of resistance increases, including that of the frame. Several analytical models, developed and studied by the authors, confirmed the hypothesis that a solution to increase the rigidity of a mechanical press with open frame is obtained by shortening it. Moreover, it occurs also a slight decrease in material consumption integrated into the frame, which is a favourable effect. There have been developed more new constructive solutions [3, 4], characterized by minimal changes to the reference design solution, that of the press frame PAI 25. The new suggested constructive solutions are obtained as 3D models, accomplished in Pro Engineer Wildfire 4, and the finite element analysis was made in Catia V5 R16. The present paper shows results on increasing stiffness and reducing stress state for a few constructive solutions of shortened C-frame, having reduced distance between the working surface of the table and the spindle bore axis.

• Periodical: Applied Mechanics and Materials (Volume 371)
• Pages: 183-187
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.371.183
• Online since: August 2013
• Authors: Ioan Dan, Romeo Cioară
• Keywords: C-Frame, Elastic Strain, Press, Stiffness, Sustainable Development, Tensions State

References

[1] V. Tabără, I. Tureac, Machines for processing by deformation, Publisher Didactică şi Pedagogică, Bucharest, 1984 (in Romanian).

[2] Gh. Buzdugan (coordinator), Mechanical Engineering Handbook, Publisher Tehnică, Bucharest, 1976 (in Romanian).

[3] R. Cioară, I. Dan, Increased rigidity solutions for C-frame mechanichal presses, Proc. in Manufacturing Systems ICMaS, vol. 6 (2011), issue 2, ISSN 2067-9238, pp.111-116.

[4] I. Dan, R. Cioară, Optimization Studies about Crank Mechanical Press PAI 25 Frame, Proc. of ModTech 2011, ISSN 2069-6736, pp.521-524.