MM Science Journal, March 2012

PROPOSED EVALUATION OF MATERIAL MACHINABILITY USING A LASER BEAM

Jaroslav Rasa, Radka Bicistova
Keywords: Laser | machinability of materials | pure substances | alloys | impact of working speed | impact of pulse frequency

The article presents the results of research on laser machinability of materials. The research has been carried out on pure substances, namely C, Zn, Ti, Si, Al, Ni, Cu, Fe, Cr, as well as different types of steel, cast iron, bronze, brass and titanium alloys. A diode-pumped solid-state Ns:YAG laser with a medium output power of 50 W has been used as the radiation source. Based on experimental resu (…)

SYNERGETIC DEVELOPMENT OF MACHINE TOOLS

Jan Vesely, Jan Smolik, Pavel Rybar, Vojtech Matyska, Jaroslav Sindler, Tomas Zavazal, Lukas Havlik, Tomas Kozlok
Keywords: synergy | Simulation | database | mechanical structure | drive

Looking at modern machine tools from a design point of view, we observe that a number of their basic characteristics and methods used for their optimised design are the same. This even applies to very different categories of machines with different proportions, dimensions, parameters and specific structures. The project introduced in this paper—Synergic machine tool design (SMTD – aims to find such (…)

DEVELOPMENT AND APPLICATION OF 2D DYNAMIC MODULE

Stefan Valencik
Keywords: producing technique | operating technique | dynamic module | integrated kinematics

The paper presents primer base of knowledge in the field of development of modules of machine systems, including their formation into specific assemblies in accordance with development, manufacturing and utilization strategy. The paper is based on elaborated strategy of architecture and development of reconfigurable machine systems, which was used at searching for new possibilities and principles o (…)

VIRTUAL MACHINING SYSTEM ENGINE FOR SIMULATION OF THE PROCESS MACHINE INTERACTION

Andreas Archenti, Mihai Nicolescu and Thomas Lundholm
Keywords: FEM | milling | Simulation | Machine tool | cutting process

The aim of this paper is to introduce a novel methodology, based on a finite element (FE) computation engine for simulation of process machine interaction occurring in machining systems. FE modelling of the milling process has the purpose of being accountable for a thorough validation of the parametric identification approach, and of providing a good physical insight into the phenomena investigated (…)