APPLICATION OF COMPUTER SIMULATION TO INCREASE THE PRODUCTION RATE OF PICKLING LINE

MM (Modern Machinery) Science Journal, March 2014

Ivana Simeonovova, Radek Knoflicek

BUT, Faculty of Mechanical Engineering, Department of Robotics and Robots, Institute of Production Machines, Systems and Robotics, Brno, Czech Republic

 

e-mail: y78756@stud.fme.vutbr.cz, knoflicek@fme.vutbr.cz

Abstract

This article describes the practical application of computer simulation of the manufacturing system. The field of modelling and simulation is as diverse as a group of people. Each discipline has developed or is developing its own models and their own approaches and tools for exploring these models.

The simulation includes generating and observation of artificial history of system, whereby is possible to derive conclusions concerning the operating characteristics of a real system that is represented by the simulation. In this article is an example of the practical application of simulation approach for simulating the transport of semi-finished products on pickling line.

 

Keywords: production system, simulation, optimization, simulation analysis, pickling line, production rate

 
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ON THE ANALYSIS OF THE SOUND SPECTRUM AT MACHINING OF THE GLASS-POLYESTER COMPOSITE MATERIAL

MM (Modern Machinery) Science Journal, March 2014
 

Zdenek Fiala, Miroslav Piska, Ales Jaros

BUT, Faculty of Mechanical Engineering, Department of Manufacturing Technology, Brno, Czech Republic

e-mail: fialaml@centrum.cz

Abstract

This paper deals with analysis of the machining process sound spectrum at milling of the glass-polyester composite material. The development of intensities of the machining process with a growing flank wear has been observed during the experimental machining. High speed steel cutting tools deposited by (Al,Ti,Cr)N coating were used for experimental machining.
The goal of this article is identifying relations between the sound generated by the milling process with respect to other measurable variables, which include flank wear of cutting tool and cutting force (or the specific cutting force). The results were compared with results reached during similar milling of the hardened steel DIN EN 10 277 (1.8159).
 

Keywords: sound spectrum, dominant frequency, composite material, specific cutting force, flank wear, cutting tool

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ENERGY ANALYSIS OF ENERGY HARVESTING FROM MACHINE TOOL VIBRATIONS

MM (Modern Machinery) Science Journal, March 2014

Zdenek Hadas, Michal Holub, Petr Blecha, Jan Vetiska, Vladislav Singule

BUT, Faculty of Mechanical Engineering, Brno, Czech Republic

 
Abstract
This contribution assesses the possibilities of application of Energy Harvesting technology in the field of machine tool diagnostics. These machines are on various parts more often fixed with many sensors monitoring status values such as deformations or temperature. However, in poorly accessible construction nodes, there is a problem with installation of both power and data cables. It could be solved by suitable application of an energy harvesting generator that would provide power supply to a specific sensor and enable wireless transfer of the measured data. In order to test the applicability of this solution, a detailed measurement and analysis of vibrations generated at defined regimes of a machine were performed, both without machining and during power machining with the use of a demonstrator. The results confirmed the possibility to use the technology of Energy Harvesting to capture electric energy from vibrations. Although the demonstrator generated only very little power, with the use of modern communication technology it would be sufficient for selected applications with discontinuous reading of the measured characteristics.
 
Keywords: energy harvesting, machine-tools, vibration, milling, diagnostics
 
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