Manufacturing Technology Journal, 2012 (vol. 12), issue 1
Utilization of Open Source Application in Area of Augmented Reality Assembling Processes
Barna Jozef, Fecova Veronika, Novak-Marcincin Jozef, Torok Jozef
Manufacturing Technology 2012, 12(1):2-7 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/2 
This chapter investigates the establishing process of virtual tool that in its logical core utilizes an approach based on the open source philosophy exploited for the work with the environment of augmented reality and its application in assembling processes. The traditional possibilities of how the engineer can use tools of augmented reality in form of normal commercial devices to collect the information about position of observed object in the working environment concern special devices with general structure formed by elements of motion tracking systems or technology of visual markers. In the beginning, the chapter briefly focuses on general problems...
CAM in the Production of Casting Patterns
Bílek Ondřej, Rokyta Luboš, Šimoník Jaroslav
Manufacturing Technology 2012, 12(1):7-12 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/7
The article is focused on the production of permanent casting patterns from wood for impermanent moulds by the 5-axis machining centre. Programming of casting pattern was dealt with CAM software by two different manufacturers. Casting pattern, adapted by appropriate allowances, was loaded in the SolidCAM R10 and the CAM Express 7.5 by Siemens. Ergonomics in the working environment of programmes, operation verifications and theoretical machine time were compared. The casting pattern was machined after generating the NC code on FC3800 MACH milling machine. Monitored parameters during computer programming were associated with the measured values when...
Study of Deformation Processes after Hard Turning through Acoustic Emission
Čilliková Mária, Neslušan Miroslav, Mičietová Anna, Mrázik Jozef
Manufacturing Technology 2012, 12(1):13-17 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/13
- The paper deals with analysis of deformation processes and related aspects of the chip formation as the chip thickness, the chip ratio and the shear angle during turning hardened steel 100Cr6. This paper investigates influence of feed on the mentioned aspects through the metallographic analysis, calculation of the significant aspects of deformation processes and the following experimental study. This experimental study is based on application acoustic emission sensors. The results in this study reports that feed significantly does not affect such parameters as the chip ratio, deformation angle in the cutting zone. On the other hand, experimental...
Experimental verification of abrasive mass flow impact on the technological head acceleration amplitude and vibrations frequency in the production system with AWJ technology
Fabian Stanislav, Salokyová Štefánia
Manufacturing Technology 2012, 12(1):18-21 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/18
During the operation of manufacturing systems with hydroabrasive jet technology, arising in the production system vibrations, which affeon ct its reliability and durability, operating costs and consequently economic efficiency and operational safety. The emergence and spread of vibrations generated by water jet technology remains actual and theoretically difficult issue, which is currently not sufficiently developed. Despite the best efforts of researchers and a good knowledge of the operation in PS with water jet technology remains unexplained facts. One of them is the abrasive mass flow technological parameter affecting the acceleration amplitude...
GICS for grinding process optimization
Holesovsky Frantisek, Naprstkova Natasa, Novak Martin
Manufacturing Technology 2012, 12(1):22-26 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/22
The article deals with the automation of the grinding machine duty cycle. There are both described, the problems of the automation of the duty cycle and the present state summarised in this paper. The control systems of grinding cycle run from the experiences and process knowledge. Real GICS (Grinding Intelligent Control System) must be founded on the process monitoring and to create own control system with principal parameters of grinding. Cutting speed, workpiece motion speed, depth of cut, volume of coolant, course of cutting forces and other process parameters can form single control components at the adequate process knowledge. At some control...
Experimental Verification of the Relation between the Surface Roughness and the Type of Used Tool Coating
Kasina Marek, Vasilko Karol
Manufacturing Technology 2012, 12(1):27-30 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/27
This contribution deals with the need of continual experimental study of the phenomenon that relates to the increasing demands to the quality of engineering production and also to the productivity and economy of the production. Experimental part is focused to the influence of the tool coatings, which significantly affect the roughness of the material machined with the use of the cutting plates made of high-speed cutting steel. The plates were used in the series of the experiments, what allows us to create the models of real situations in the area of concrete manufacturing technology and subsequently to analyze them. To the measured and evaluated parameters...
Experimental Verification of FEM Simulation of GMAW Bead on Plate Welding
Kovanda Karel, Holub Lukáš, Kolařík Ladislav, Kolaříková Marie, Vondrouš Petr
Manufacturing Technology 2012, 12(1):30-33 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/30
The research focuses on verification of FEM simulation of GMAW bead on plate welding with experimental results. In the program Visual Environment simple FEM simulation of GMAW bead on plate welding on Al alloy EN AW 7022 was created and these simulation data were compared with measured experimental data. To create good FEM model setting of heat source and material parameters are of great importance. To set parameters of heat source measurement of welding parameters, metallographic sample, weld bead and end crater was experimentally done. During experiment, temperature was measured by several thermocouples and measured temperature was compared with...
Productivity Investigation within the ERP System
Kujawa Anna, Legutko Stanislaw
Manufacturing Technology 2012, 12(1):34-38 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/34
The paper presents utilization of class ERP system for examination, analysis and updating of production standards. The investigation has been performed in a medium size enterprise manufacturing products of steel strip and sheet. It has been shown that everyday reporting of production in the ERP class system makes it possible to examine the individual products in respect of the production time and becomes a basis of verification of the standards imposed by the master firm. Continuation of the reexamination after verification of standards will most probably initiate introduction of piecework wage system.
Laser Machining of Chosen Materials
Lukovics Imrich, Malachova Martina
Manufacturing Technology 2012, 12(1):38-42 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/38
A paper deals with technological applications of laser. It evaluates the influence of design and technological conditions on output parameters of cutting process and also presents relative laser machinability of polymeric and metallic materials; in addition, it shows possible evaluation of structural change of metals and it gives mathematical model for determination laser cutting quality functions based on results of the experimental research. The temperature distribution has been derived. Results of plastic materials and hard-to-machining metals machinability are shown. Finally, surface quality evaluation after exposure to concentrated light energy...
Impact of technical diagnostics interval on machinery maintenance
Mayer Karel, Pexa Martin, Pavlů Jindřich
Manufacturing Technology 2012, 12(1):42-46 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/42
Machinery maintenance significantly participates in its reliable, serviceable and safe operation. Well-timed maintenance can identify a fault condition of machinery leading to manufacturing a product of poor quality. Maintenance interval can be fixed or maintenance can be done when needed, meaning at the moment when some of operating parameters get worse. An example of determination of diagnostics interval set based on machinery vibrodiagnostic measurement is described in the paper. The shown steps are universal and can be applied to another technical diagnostics methods as for example tribodiagnostics, thermodiagnostics, non-destructive materiology...
Research into the causes cracking of aluminum alloys of Al - Cu during mechanical machining
Michna Štefan, Náprstková Nataša
Manufacturing Technology 2012, 12(1):47-51 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/47
The aim of the work was carried out research on the causes cracking formed aluminum work pieces in the assortment of rods, which sometimes occur in the mechanical machining (turning, drilling) for alloys of Al-Cu. A typical representative for the machining of aluminum alloys is AlCu4MgMnPb alloy, most of which performs heat treatment for hardening increases the ultimate strength. For the given alloy were carried out qualitative and quantitative fractographic analysis of fracture surfaces after machining in order to determine possible causes cracking of the material and thus his insufficient strength. This paper clearly documented that the fractographic...
Vibratory superpolishing of a ti alloy aerospace material with thermally treated recycled glass media
Morgan Mike, Jamal Mikdam, Benjarungroj Paul, Vaughan Steve
Manufacturing Technology 2012, 12(1):51-55 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/51
This paper reports on the outcomes of an investigation concerned with the machining performance of thermally treated recycled glass in the vibratory mass finishing process. The surface finish generated with the glass is compared to that achieved using conventional polyester bonded media under different lubrication conditions. To help understand the wear behavior of the glass, measurements of the surface topography were obtained at intervals throughout the tool life, using a replication method. A further series of tests were undertaken to establish self-attrition rates. It has been demonstrated that the machining performance of recycled glass media...
Abrasive wear effect on Polyethylene, Polyamide 6 and polymeric particle composites
Müller Miroslav, Valášek Petr
Manufacturing Technology 2012, 12(1):55-59 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/55
An agricultural machine construction is exposed to significant effects of functional areas wearing. The application of polymeric materials and composite materials seems to be prospective. The abrasive wear resistance was tested on rotating cylindrical drum device with the abrasive cloth of the grain size P120. Various modifications of polymeric particle composites, Polyethylene and Polyamide 6 were tested. The polymeric particle composites research and production were focused on knowing the dependence among a two-component epoxy adhesive and various concentration and fraction of corundum hardening particles Al2O3. Polymeric particle composites showed...
Application of Barkhausen Noise for Analysis of Surface Integrity after Hard Turning
Neslušan Miroslav, Rosipal Martin, Kolařík Kamil, Ochodek Vladislav
Manufacturing Technology 2012, 12(1):60-65 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/60
Introduction into problems - This paper deals with the application of Barkhausen noise for investigation of residual stresses after hard turning. The results illustrate the differences in the stress distribution after hard turning and grinding. The analysis of the stress and structure state shows that the conventional evaluation of Barkhausen noise fails and monitoring of surface integrity will require a subsequent modified approach. The main reason for it is a more complicated relationship between stresses, surface hardness and structure. And so the modified approach is described for monitoring surface integrity after hard turning operations. This...
Surfaces with high precision of roughness after grinding
Novak Martin
Manufacturing Technology 2012, 12(1):66-70 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/66
The traditional approach to grinding is to operate within the limits of surface quality. The requirements for surface quality in grinding are higher than those in other common machining operations such as turning and milling. The surface quality of machined parts is very important for precise production and assembly. When we focus on roughness parameters after grinding, we can establish the limits of these parameters for typical grain materials: Al2O3, SiC, CBN, SG and others. Increasing demands on accuracy and quality of production leads to research concerned with the properties of these materials and the surface quality after grinding. This paper...
Increasing of Product Quality Produced by Rapid Prototyping Technology
Novak-Marcincin Jozef, Janak Miroslav, Novakova-Marcincinova Ludmila
Manufacturing Technology 2012, 12(1):71-75 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/71
In paper are presented basic characteristics and problems in area of Rapid Prototyping technology with use of layered production technology named Fused Deposition Modelling (FDM). It is progressive method of 3D model product creation based on geometry obtained from CAD system with application in different industrial areas. Text of the paper is focused on optimization of Rapid Prototyping preparation process. There also is algorithm that leads to selection of suitable setting conditions. Utilization of algorithm is explained on case of printing with use of UPrint device and Catalyst software. There are outputs in form of graph and tables accumulating...
Application of Progressive Materials for Rapid Prototyping Technology
Novakova-Marcincinova Ludmila, Janak Miroslav
Manufacturing Technology 2012, 12(1):75-79 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/75
In paper are presented basic information about common and progressive materials used for realization of products by Rapid Prototyping technology application. The initial state of material can come in either solid, liquid or powder state. In solid state it can come in various forms such as pellets, wire or laminates. The current range materials include paper, nylon, wax, resins, metals and ceramics. Last mentioned materials are used manly in application of Rapid Prototyping technology for rapid manufacturing of products or rapid production of tools - Rapid Tooling.
Design of a Casting Die in CATIA
Rokyta Luboš, Bílek Ondřej
Manufacturing Technology 2012, 12(1):80-82 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/80
Design of a Casting Die made of aluminium alloy components using CATIA software is described in the article. Computer aided design and construction is necessary for the creation of each part. A lot of tools are implemented in the CATIA program. These tools are used to design cast parts easily. A few aspects are necessary for this technology. To achieve a quality fine-grained structure without porosity and the oxide inclusions, a possibility to observe the casting, solidification, tempering, easy creation of core and cavity, possibility of rapid design whole mould. This factors influence efficiency of construction, quality of the product and production...
Processing engineering of large composites structures using low-pressure vacuum infusion
Rusnáková Soňa, Žaludek Milan, Bakošová Dana
Manufacturing Technology 2012, 12(1):83-86 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/83
Composite materials, such as fibre reinforced plastics and sandwich panels, have considerable potential for use in the next generation of transport structures. They are lightweight, durable, and readily moulded to shape. However, there are also additional complexities associated with the use of composites, particularly in terms of design and manufacture. These complexities, together with issues of cost, are currently limiting their adoption by the transport sectors. The selection of the manufacturing process for a composite component will normally depend upon the nature of part and the required production volumes. We try to present vacuum assisted...
Two local extremes of cutting speed
Macurová Anna, Vasilko Karol
Manufacturing Technology 2012, 12(1):86-89 | DOI: 10.21062/ujep/x.2012/a/1213-2489/MT/12/1/86
In 1906 Taylor mathematically defined the dependance of tool durability on cutting speed in the form: T=CT/vm for the first time. It is an equation of a hyperbola, which represents itself as a straight line in double logarithmic net according to Taylor. The dependance is valid for the tools made of high-speed steel. It has still been used in spite of the fact that new cutting materials, which cannot be used according to it, or can be used only partially in a narrow range of higher cutting speeds. The course of function T=f(vc) for the tools made of sintered carbid and ceramics will be identified in the paper. It requires extensive durability tests...