The aim of the work is find out influence feed rate on quality for machined surface, especially surface roughness. experiment was carried by cutting tool HURCO VMXt30 with respect to following parameter: speed 250; 350; 450; 550 and 850 m . min -1 , 0,1; 0,5 1,0 mm/tooth. For testing used two most common materials in steel grade 1.1191 (12 050) 1.2343 (19 552), we chose ordinary parameters roughness; Ra - arithmetical mean roughness deviation Rz largest inequalities height profile transverse...

In the field of additive manufacturing, Laser Powder Bed Fusion (LPBF) has become a good technique for manufacturing metallic parts. The aim this investigation was to clarify how temperature, sliding speed, and load affected tribological properties SS316L that made by LPBF. Test velocity, applied all had significant impact on sample wear rate as well their Coefficient Friction (COF), according data. Particular note: at test temperature 250 °C, COF showed lower values compared ambient oxide...

This contribution deals with the research and proposal to change a position of tool axis against milled surface during multi-axial milling.Our target is achieving an increase in milling efficiency (improvement functional properties, accuracy, durability, decrease energy load on machine, shortening time).This attempts make production shape planes more efficient.This concerns molds, impression dies, other complicated parts various engineering industries, primarily automotive aircraft ones.

The purpose of this paper is to investigate the problems with increasing efficiency turning cycles. This also describes and suggests possibility using effective strategies their application in programming CNC centers. It proposes new roughing cycles where variable depth cut applied. Suggested use will ensure durability cutting tool during turning. proposed research for an experimental work – measuring forces monitoring wear on edge. compares standard cycle used

Although the abrasive waterjet (AWJ) has been widely used for steel cutting decades and there are hundreds of research papers or even books dealing with this technology, relatively little is known about relation between microstructure AWJ efficiency. The can be significantly affected by heat treatment. Three different grades, carbon C45, micro-alloyed 37MnSi5 low-alloy 30CrV9, were subjected to four types treatment: normalization annealing, soft quenching followed tempering. Then, they cut...

Original scientific

This contribution deals with the accuracy of machining during free-form surface milling using various technologies. The analyzes and roughness machined experimental samples 3-axis, 3 + 2-axis, 5-axis milling. Experimentation is focusing on tool axis inclination angle—it position relative to workpiece. When comparing highest (deviation ranging from 0 17 μm) was achieved simultaneous (inclination angles βf = 10 15°, βn 15°). also enriched by a CAD (Computer Aided Design) model prediction...

This article concentrates on the assessment of a 3D shape parts components. The is divided into three distinctive shapes: spherical canopy, pyramid, and concave transition between these shapes. Create surfaces, various strategies 3axis 5axis milling are used. These described then compared model in CAM MasterCAM software. surface component further measured with roughness measuring device. accuracy using measurement centre surfaces different machining strategy. last criterion for comparing to...

The article deals with evaluating of the resulting surface state three plastic materials and identification suitable conditions for laser cutting CO 2 tube.As representative were chosen polypropylene, polymethylmethacrylate polyamide.When these types it could melt eventually their re-sintering.A combination parameters is possible to achieve sufficient quality cut.The samples cut at different feed speed power.Then they was compared on basis measured roughness Ra a Rz by using portable touch...

This contribution describes the progress of wear and influences contributing to a cutting tool during straightturning Nickel superalloy Inconel 718 according W. Nr 2.4668. According ISO 513 standard this alloy belongs among heat resistant materials; it is special used primarily for machine parts in aircraft industry. The experimental part was done purpose testing suitability proposed exchangeable inserts intended machining 718. Mechanisms magnitude durability tools were determined accordance...

A growing number of steel components are being fabricated by 3D metal printing. Using metallic powder as the material fed into laser is selective melting (SLM), one most popular and precise techniques. The main focus this article investigation that Renishaw conducted on was supplied. made using gas atomization method, obtained from SLM process then examined. powder's morphology analysed scanning electron microscopy (SEM). particles were seen to have a spherical shape, with notable satellites...

Paper deals with identification of the main causes deformations thin-walled bearings and comprehensive analysis bearing deformation suggestion possible solutions. It steel, its characteristics rings during heat treatment manufacturing process. Provides experimental measurement report uniformities on surface - called oval cradle, metallographic rings, as well an various processes affecting formation deformations.​

The article tackles the possibilities and effectiveness of different printing strategies on Easy 3D MAKER printer.This printer uses Fused Deposition Modeling (FDM) method.The operating software offers various settings, which influence quality efficiency printing.In there is described a sample with all fillament print available in maker software.The strategy printed model fundamentally influences consumption material time at component.The was assessed indirectly by weight particular...

This research focusing on influencing the surface structure and its geometric deviations from CAD model after various tumbling of bodies at constant parameters machine. The purpose determining actual effect resulting before pro-cess, which body causes selection a larger grain or compaction layer. outputs are thermographic maps measured using mod-els. experimental line was VŠB - TU Ostrava, with help PROTOLAB 3D printing center, there an sample in your game. Measurement access metrology...

Implementation and contribution of miniature machining is currently rapidly increasing in biomedical industry, austenitic steels titanium particularly. Machinability materials with increased level toughness depends on factors that are important the final state surface integrity. There requirements for high precision measures varying microns. If we want to guarantee precision, it necessarry identify tool wear intensity interaction given materials. During long-term cutting process, different...

Abstract This innovative study trying to do interdisciplinary interface at first view different ways fields: kinantropology and mechanical engineering. A motor skill is described as an action which involves the movement of muscles in a body. Gross skills permit functions running, jumping, walking, punching, lifting throwing ball, maintaining body balance, coordinating etc. Fine captures smaller neuromuscular actions, such holding object between thumb finger. In inspection, accuracy...

Continuously increasing of productivity is main cause finding new ways and methods machining. High feed machining (HFM) one high-productivity developed to achieve higher metal removal rates decrease time. Each or treatment operation introduces residual stress into the material its surface layers. Roughing generate tensile obviously. Tensile character not suitable for functional properties produced parts. In some cases, finishing can improve character. New detection method by applying x-ray...

This article is interested about drilling the holes to alloy wheels. Tested were drills for screws and service holes. For screw was tested three-stage drill with inserts from polycrystalline diamond. Drilled are two different diameters transition spherical or conical surface. The drilled cemented carbide availible Mapal labeled Mega-drill-Alu-180. During test, modified geometry of we watched what will be effect applied modification. seven variants regrinding drill. We evaluate surface...

The accuracy of milling centre geometry is a basic condition for successful application in practice.Users modern centres have to deal with the issue measuring using production program.The desired results are achieved by careful preparation both before and during adjustment operations.These rules apply all applications new machines, but also machines after collision or handling older machines.The geometrical machine begins at design stage, when emphasis must be placed on precision parts...

The article deals with difficult-to-machine cobalt super alloys.The main aim is to test the basic properties of alloys and propose suitable cutting materials machining parameters under designation 188 when machining.Although development technology in chipless such as moulding, precision casting other manufacturing methods continues advance, still leading choice for piece production, typical energy chemical engineering.Nowadays, are commonly used turbine engines regions that subject high...

The article deals with a comparison of machining two chemically very similar materials aluminium alloy, however, various internal structures by means non-conventional technology electro-erosive wire cutting (WEDM). first material used was right parallelepiped ALPORAS foam porous structure produced method powder metallurgy. As the second designed to EN AW 5005 alloy chosen owing high content and therefore near chemical composition compared material. samples circular section identical height...