Aleš Polzer
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View article: New EDM Generator Used for the Machining of 1.2363 and 1.2343ESR Steels
New EDM Generator Used for the Machining of 1.2363 and 1.2343ESR Steels Open
The basic building block of any electric discharge machine is a generator, which ensures the operation of material separation itself. Not only the erosion rate and electricity consumption but also the quality of the machined surfaces depen…
View article: Vertical Graphene Growth on AlCu4Mg Alloy by PECVD Technique
Vertical Graphene Growth on AlCu4Mg Alloy by PECVD Technique Open
Vertical graphene, which belongs to nanomaterials, is a very promising tool for improving the useful properties of long-used and proven materials. Since the growth of vertical graphene is different on each base material and has specific de…
View article: Machining of B1914 nickel-based superalloy using wire electrical discharge machining
Machining of B1914 nickel-based superalloy using wire electrical discharge machining Open
The unconventional technology of wire electrical discharge machining is a key engineering technology, designed primarily for machining of conventionally difficult machine materials. One of them is nickel alloys, which are majorly used in t…
View article: The design of a device for testing the tribological properties of knee endoprostheses
The design of a device for testing the tribological properties of knee endoprostheses Open
The presented paper deals with the design of a knee simulator that uses pin-on-ball configuration, ie cartilage and CoCrMo head. The translational motion consists of the cartilage and the rotating head when the load of the articulating pai…
View article: ANALYZING THE PERFORMANCE OF CIRCLE SEGMENT END MILL WITH PCD INSERTS WITH LASER-MACHINED INTEGRAL CHIPBREAKER WHEN DRY MILLING OF ADDITIVE MANUFACTURED TI-6AL-4V TITANIUM ALLOY
ANALYZING THE PERFORMANCE OF CIRCLE SEGMENT END MILL WITH PCD INSERTS WITH LASER-MACHINED INTEGRAL CHIPBREAKER WHEN DRY MILLING OF ADDITIVE MANUFACTURED TI-6AL-4V TITANIUM ALLOY Open
Components with generally shaped surfaces requiring higher surface quality and dimensional accuracy are, in most cases, machined. Specifically, milling technology is involved very often, which can be supplemented by finishing operations. B…
View article: Analysis of bimetal pipe bends with a bend of 0.7D with a cladding layer of Inconel 625
Analysis of bimetal pipe bends with a bend of 0.7D with a cladding layer of Inconel 625 Open
Bimetal pipes are highly stressed composite components that must resist corrosion in a chemically aggressive environment. The production of pipe bends with a supercritical bend of 0.7D, which form the part of serpentine systems, is very co…
View article: New developed software for processing and analysing of the cutting forces records verified when machining by modern circle-segment end mills
New developed software for processing and analysing of the cutting forces records verified when machining by modern circle-segment end mills Open
At present, 5-axis machining is often realized with ball end mills that do not achieve the advantages of the modern circle-segment end mills. In recent studies, these tools have been compared concerning the quality of the machined surfaces…
View article: Determination of mechanical properties of materials used for 3D printing
Determination of mechanical properties of materials used for 3D printing Open
The presented paper deals with determination of mechanical properties of materials used for 3D printing (ABS, nylon and PLA). The theoretical part of the paper characterizes the static tensile test by which selected me-chanical properties …
View article: DESIGN AND PRODUCTION OF EYE PROSTHESIS USING 3D PRINTING
DESIGN AND PRODUCTION OF EYE PROSTHESIS USING 3D PRINTING Open
The paper deals with the production of a prototype of aesthetic eye prosthesis using procedures related to reverse engineering technology.Due to the complexity of the prosthesis shape, the 3D model was obtained by scanning a hand-made acry…
View article: 5-AXIS DRY MILLING OF BOTTOM OF POCKET BY BALL AND CIRCLE-SEGMENT END MILLS
5-AXIS DRY MILLING OF BOTTOM OF POCKET BY BALL AND CIRCLE-SEGMENT END MILLS Open
At present, 5-axis machining is often realized with ball end mills that do not achieve the advantages of modern circle -segment end mills.However, to exploit the potential of these modern tools, it is necessary to use a special CAM softwar…
View article: END MILLING OF Ti-6Al-4V ALLOY BY PCD INSERTS WITH LASER-MACHINED INTEGRAL CHIPBREAKER
END MILLING OF Ti-6Al-4V ALLOY BY PCD INSERTS WITH LASER-MACHINED INTEGRAL CHIPBREAKER Open
Polycrystalline diamond (PCD) is becoming more available cutting material due to developing technologies, but it is still one of the difficult-to-cut materials.Nowadays, sharpening of diamond inserts is usually performed using unconvention…
View article: END MILLS WITH PCD INSERTS INCLUDING INTEGRAL CHIP BREAKER
END MILLS WITH PCD INSERTS INCLUDING INTEGRAL CHIP BREAKER Open
Diamond -the chemically metastable form of carbon at room temperature and standard atmospheric pressure -has become the standard material used for cutting tools.Its specific cutting properties also correspond to its difficult machinability…
View article: RESIDUAL STRESS WHEN FACE MILLING ALUMINIUM ALLOYS
RESIDUAL STRESS WHEN FACE MILLING ALUMINIUM ALLOYS Open
Virtual reality is quickly evolving technology which is starting to push not only in entertainment but also in other disciplines like an automotive, machine or aircraft industry.Due to ever higher teaching demands of these problematics vir…
View article: END MILLS WITH PCD INSERTS SHARPENED BY DIFFERENT ELECTRICAL TECHNOLOGIES
END MILLS WITH PCD INSERTS SHARPENED BY DIFFERENT ELECTRICAL TECHNOLOGIES Open
This paper deals with a design and a shape optimization of a tool that combines punching of a tarpaulin with the tarpaulin grommet pressing in one operation.The tarpaulin grommet 0.5 mm thick with a diameter of 10 mm is made of DX51D+Z275M…
View article: A Special Tool for Making a Detail of the T-groove
A Special Tool for Making a Detail of the T-groove Open
The paper deals with the design of a special machining tool for efficient production of detail on the T-groove of the clamping part. The introductory part of the paper is focused on introducing the Czech company. The practical part of the …
View article: Shape Inspection of Gear Prototypes Using Reverse Engineering Method
Shape Inspection of Gear Prototypes Using Reverse Engineering Method Open
Reverse engineering is a technology that enables acceleration of data collecting for CAD, CAM, CAE systems, which also means shortening time of development, construction and components production. It is a transfer process of a physical com…
View article: REVERSE ENGINEERING METHOD USED FOR INSPECTION OF STIRRER´S GEARBOX CABINET PROTOTYPE
REVERSE ENGINEERING METHOD USED FOR INSPECTION OF STIRRER´S GEARBOX CABINET PROTOTYPE Open
Reverse engineering is a technology that enables acceleration of data acquisition for CAD, CAM, CAE systems and thus greatly reduces the time of development, design and production of components.In general, reverse engineering technology ca…
View article: Construction of Mechanic Regulation of Turbine Ventilator using Whirling Turbine
Construction of Mechanic Regulation of Turbine Ventilator using Whirling Turbine Open
An article deals with a definition, concept, development, calculation and construction of a prototype of mechanical regulation of a turbine ventilator using a whirling turbine reducing an amount of ventilated air.The whole mechanical regul…
View article: Construction of Mechanic Regulation of Turbine Ventilator using Half-Flap
Construction of Mechanic Regulation of Turbine Ventilator using Half-Flap Open
An article deals with a definition, concept, development, calculation and construction of a prototype solution of a mechanical regulation of a turbine ventilator using a half-flap eliminating an amount of ventilated air. The whole mechanic…
View article: Analysis of Selected Aspects of Turned Bearing Rings Regarding Required Workpiece Quality
Analysis of Selected Aspects of Turned Bearing Rings Regarding Required Workpiece Quality Open
An article deals with an analysis of selected aspects of heat-treated bearing rings during machining and comes up with a solution (a machining operation) leading to improving efficiency of a machining process (i.e. an elimination of a gene…
View article: Development and Production of Prototype Model of Axial Fan
Development and Production of Prototype Model of Axial Fan Open
Additive technologies belong to modern trends in production of prototype components. They include e.g. sintering of powders with a various chemical composition, granularity, physical, chemical and other usable qualities. There belong to ad…