Modern Machinery (MM) Science Journal, December 2011

SAFETY OF THE WATER JET

Jan Kmec, Lydia Sobotova and Peter Demec
Keywords: all materials | cold cut | Water-jet cutting technology

Water – jet cutting technology presents new accesses of shape cutting and various material separations at cold cut without heat influence to material on cutting edge.

PROBLEMATIC OF FAST AUTOMATIC TOOL CHANGE BY WORKING MACHINERY

Jan Pavlik
Keywords: Adams | LabView | simulation model | tool interface | automation | ATC | automatic tool change

The article is focused on the issue of the automatic tool change (ATC). The discussed topic can be onsidered at present to be the most relevant for the group of machines from the category of milling centres. The pressure for productivity, efficiency of the whole manufacturing process, reliability and, last but not least, safety, leads manufacturers to design and install modern equipment for the im (…)

SEISMICALY BALLANCED MACHINE TOOL – MODEL AND SIMULATION OF COG MOVEMENT ABSOLUTISATION OF „FLOATING“ AXIS

Tomas Repak
Keywords: PID controller | LQ controller | control | model | Simulation | seismically balanced tool machine

Presented contribution describes a seismically balanced machine tool axis with advantages and disadvantages of that kind of concept. After an introductory survey on the seismically balanced machine tool, a system simulation is presented. This system simulation includes a model of the mechanical parts, a model of a synchronous linear motor, and a model of the control circuits. The control algorithm (…)

The Analytical Formulations for Vehicle Motion Planning

Prof. D. Tesar
Keywords: Instant Center | Vehicle Planning Motion

We are now just entering the age of intelligent electro-mechanical systems. In this case, a multi-wheeled vehicle is to be modernized by opening up the architecture (it is fully modular and can be assembled on demand). In particular, the mobile platform can have any body geometry for N wheels (supported by articulated suspensions of 2 to 3 DOF), all acting in parallel. Given the motion specificatio (…)