There is an increased interest in high entropy alloys as a result of the special possibilities improving mechanical, physical or chemical characteristics resulting from metallic matrices made different elements added equimolar proportions. The next step developing new to determine cutting conditions optimize manufacturing prescriptions. This article presents series tests performed estimate machining behavior Al0.6CoCrFeNi alloy. effects temperature during machining, wear on tool, evolution...

This paper presents the study results regarding analysis of screen printing quality on different types materials. The is determined by several particularities process such as: type mesh, ruling, ink viscosity, raster spacing, etc. material which supposed to be printed as important itself. composition, structure and features items well viscosity other properties, all together determine matter.

The paper shows the importance of designing an ABS (Acrylonitrile-Butadiene-Styrene) plastic part which will be produced using FDM (Fused Deposition Modeling) technology; it is obtained a product with same characteristics provided by operating guide book. Thus, this solution combines both capacity designer as well applied technology and can produce similar or improved components, at time maintaining functional work piece. This plea for application 3D printing manufacturing components (spare...

In the printing industry, where production never stops, it is very important to continuously maintain machine performance. If a breaks down, will stop and disturb process. Therefore, maintenance system must be managed efficiently solve those problems. The paper presents study results on continuous quality improvement of offset using preventive features. Offset process that involves multitude variables, independent interdependent factors. was analyzed factors have significant influence...

In the case of vertical travels large masses it is necessary to have counterbalancing systems, besides kinematic chain feed/positioning. These systems a positive influence on machine accuracy. The are mechanic or hydraulic. some cases, hydraulic containing one cylinder and several accumulators in theoretically closed-loop used. This paper presents mathematical models simulation programs for counterbalance systems.

A very important issue that needs to be solved as simply and correctly possible is how establish the thermal performance of phase-changing materials (PCM). The undertaken researches have analyzed values performances PCM taking into account method finite elements experimental research, respectively, based on a modern measurement system was designed implemented. Butyl stearate which has been encapsulated through complex coacervation in polymethyl methacrylate used PCM. Samples were made...

The development of information technologies has a strong impact on manufacturing systems, and the presence computer allows efficient combination various needed for into an integrated computer-controlled system, which also found utility in printing field. paper presents results analysis prepress, press (print) postpress processes specific to companies terms systems that make it possible interconnect at enterprise level. At same time, were defined stages, technological operations, procedures...

The paper analyses 4 printing technological flow cases, considering the author’s experience (over 15 years) in industry to improve production efficiency. productivity, quality and delivery time are main areas of interest for people working & finishing industry, where print demand structure evolved costs replacing machines very high. implementation organisational reconfiguration changes contribute development new efficient structures within process, therefore increasing efficiency it, as...

This paperwork presents the results of theoretical and experimental research that has had as object study hydraulic installations with hydro-pneumatic accumulators. It simulations for determining performance some safety systems designed actuating brakes, ensuring bearings lubrication when circuit incorporating pump fails lifting loads in emergency situation. A installation a grinding machine is presented at end.

<p>This paperwork presents the most frequent applications of hydrostatic drives on heavy machine-tools and tries to modularize them. The focus is CNC that have been manufactured after year 2000. Hydraulic are used for duty when a high power density required, especially auxiliary kinematic chains: locking, toolholder or workpiece clamping/unclamping, balancing vertically moving loads, compensation geometric errors etc.</p>

In this paper, the authors present some of theoretical and experimental researches conducted in recent years field large masses shifted vertically. The paper starts with a technical-economical comparative analysis hydraulic mechanical balancing. following are most commonly used systems balancing for modern machine-tools, CNC ones especially. Finally presents achievements materialized units machine-tools.

This paper deals with the possibility to replace mineral oil water in hydrostatic units of machine tools. With this aim view we try make a technical-economic comparison between drive that uses range H38 - H46 and untreated water. Two simple were taken for comparison, principle, which use as hydraulic energy source one constant flow pump (q P = 4 cm 3 ) actuation two consumers 20 making suspension saddle an AFP type machine.

This paper presents the principle diagrams that can be used to manufacture hydraulic systems prevent seizing of circular hydrostatic guideways table in case heavy-duty vertical lathes, with over 4000 mm diameter. The proposed will provide lubrication as long this one rotates up a possible stop caused by an accident. Lubrication is achieved even absence machine supply voltage because it provided do not need electrical power operate. pressure, only pockets, breaking hose, detected and trigger...

This paper shows several issues related to decrease in electric power consumption for hydraulic systems of modern machine tools, especially CNCs. A core element the structure such is pneumo-hydraulic accumulator. Here, examples are shown destined locking and unlocking skids opening tool holders. mathematical models, diagrams, simulations certain experimental executions.

In this paper we try to study the opportunity of recovery kinetic energy accumulated by main kinematic chains heavy-duty machine-tools in arresting stage. We recommend a unit that can shorten time spindle, with or without semi-finished product, and would allow storage order use it for new start. give principle diagram results first simulations.

This paperwork presents the most frequent applications of pneumatic drives on universal machine-tools, particularly CNC machine-tools. It also modern calculation and verification methods with simulation software.