Analytical model for optimization of fixtures

• Autorzy: Cus F. , Zuperl U. , Balic J.
• Konferencja: Second International Tribology Conference
• Języki publikacji: EN

Abstrakty

EN

The paper is concerned about the neural-mathematical model for the analysis and rationalization of fixtures, suitable for clamping of thin-wall products likely to undergo deformation due to clamping and cutting forces during machining. The force analysis model has a built-in local optimization routine that can determine the clamping and locating forces of more reasonable magnitudes. It is suitable for the analysis of modular fixtures intended for clamping of prismatic and rotational products. The presented model takes into considerations the friction forces occurring between the workpiece and the fixture components. Due to the use of artificial neural network (ANN) the duration of the optimization routine is very short. The described procedure ensures reduction of the time of fixture planning and prevention of defects and deformation during the machining process. A programme FIXAN has also been made for the evaluation of fixturing scheme, for calculation of the optimum positioning of clamping forces, required to enable the workpiece to be safely clamped during machining.

Słowa kluczowe

EN

fixtures; fixture analysis; milling; optimization; neural networks

PL

optymalizacja; sieć neuronowa; przemiał

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2002
• Tom: Vol. 7, Spec. is
• Strony: 305--310
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Cus F.

• Faculty of Mechanical Engineering, University of Maribor Smetanova 17, 2000 Maribor, SLOVENIA

autor

Zuperl U.

• Faculty of Mechanical Engineering, University of Maribor Smetanova 17, 2000 Maribor, SLOVENIA

autor

Balic J.

• Faculty of Mechanical Engineering, University of Maribor Smetanova 17, 2000 Maribor, SLOVENIA

Bibliografia

• [1] Balic J. and Pahole I. (1997): Model informacijskega vmesnika med enotami prilagodljivega sistema (A model of informational interface between flexible manufacturing system units). - Stroj. Vestn., vol.3-4, No.43, pp. 137-142.
• [2] Boema J.R. and Kals K.J. (1988): Fixes: a system for automatic selection of set-ups and design of fixtures. - CIRP Ann, vol.2, pp.443-446.
• [3] Chou Y.C. and Barash M.M. (1986): A mathematical approach to automatic design of fixtures analysis and synthesis. - ASME, Winter Annual Meeting, Boston, pp.l 1-27.
• [4] Cus F. (1987): Automatisches Daten-Erfassungssystem fur Zerspanungen. - Werkstatt I No. 11, pp.923-926.
• [5] Cus F. and Kopać J. (1998): Inclusion of geometrical shape of cutter into optimization process. - Metali, vol.52, No.10/11, pp.602-610.
• [6] Mittal R.O. (1991): Dynamic modelling of the fixture-workpiece system. – Robotics Computer Integrated Manufacturing, No.8, pp.201-217.
• [7] Mursec B., Cus F. and Balic J. (2000): Organization of tool supply and determination of cutting conditions. - J. Mater. Process. Technol., vol.100, No. 1/3, pp.241-249.
• [8] Trappery J.C. and Liu C.R. (1989): An automatic workholding verification system, Proceedings International Conference on Manufacturing Technology of the future (MSTF'89), September 1989, pp.23-34.