Transmission Ratio Optimization of Electric Driven Palletizing Mechanism

Abstract:

One of the main objectives in obtaining high productivity on machining centers is the reduction of auxiliary times consumed with the tool and workpiece change. In the case of workpiece change the auxiliary time is reduced by adopting the use of an automatic pallet changer system and implicitly of pallets, while in the case of tool change this time is reduced using an automatic tool changer system. The optimization of the constructive and functional parameters of palletizing systems, in the purpose of decreasing auxiliary times, implies increased speed and accelerations, inertia reduction, an optimum transmission ratio, component mechanisms coupled movements, increasing the positioning accuracy of the pallet on the machine table. This paper presents the methodology of transmission ratio optimization of an electric driven pallet changer mechanism, the main purpose is to obtain the maximum acceleration. In order to find the maximum acceleration of the electric driven pallet changing mechanism considered, and thus minimizing the total changing time, we use the equilibrium equation of the moments reduced to the motor shaft. Following the proposed methodology we obtain the maximum acceleration of the considered pallet changer mechanism. Also we issue some constructive indications for future designing of electric driven pallet changer mechanisms.

• Periodical: Applied Mechanics and Materials (Volume 371)
• Pages: 421-425
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.371.421
• Online since: August 2013
• Authors: Lucian Adrian Mihaila, Gheorghe Stan, Marian Funaru, Dragoș Andrioaia
• Keywords: Automatic Pallet Changer, Machining Center, Optimization, Pallet, Transmission Ratio

References

[1] T. Moriwaki, Multi-functional machine tool, CIRP Annals – Manufacturing Technology 57 (2008) 736-749.

DOI: 10.1016/j.cirp.2008.09.004

[2] F-C, Chen, On the structural configuration synthesis and geometry of machining centres, Proceedings of the Institution of Mechanical Engineers. 215 (2001) 641.

[3] L. Mihaila, Material handling mechanisms used in flexible manufacturing systems, Applied Mechanics and Materials. 245 (2013) 197-202.

DOI: 10.4028/www.scientific.net/amm.245.197

[4] S-L, Chang, J-H, Liu, K-W, Jin, C-H, Hung, S-H, Chen, Design Optimization for Robustness Considering the Gear Transmission Error, Engineering Letters. 16 (2008) 397-397.

[5] C-I, Park, Multi-objective optimization of the tooth surface in helical gears using design of experiment and the response surface method, Journal of Mechanical Science and Technology. 24 (2010) 823-829.

DOI: 10.1007/s12206-010-0117-x