Proceedings of SerbiaTrib '13

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Dato tolerancijsko polje se preslikava utolerancijskog polja ,,J”. Ovo polje se nazivaekvivalentno tolerancijsko polje, a postiže sesmanjenjem prečnika merne glave za vrednostE = |EI/2 +ES/2I|.d mg = D -2 δ 0 -|ES/2+EI/2|- prečnik merne glavekonvergentno-divergentne mlaznice merne granepneumatska osetljivost se povećava porastompritiska napajanja komprimovanog vazduha.Pomoću diferencijalnog pneumatskog komparatorakontrolišu se spoljašnje i unutrašnje tolerisanemere. Za svaku tolerisanu meru mora se odreditiprečnik merne glave D mg i d mg . Prečnik merne glavezavisi od položaja tolerancijskog polja u odnosu nanazivnu meru, pritiska napajanja p a i δ 0 .ZAHVALNOSTRad je rezultat istraživanja realizovan u okviruprojekta TR 35029. Rad je finansiran odMinistarstva prosvete, nauke i tehnološkog razvojaRepublike Srbije na čemu sam im zahvalan.LITERATURASlika 12. Prikaz nesimetričnog tolerancijskog poljaunutrašnje mere - tolerancijsko polje ispod nulte linije2. ZAKLJUČAKNa osnovu eksperimentalnih rezultataprikazanih u ovom radu dolazi se do opštihzaključaka:Iako se različita geometrija izlazne mlazniceprvenstveno koristi radi eliminisanja vrtložne zoneizmedju mlaznice i kontrolisanog komada (ref. [2] i[5]), dati rezultati merenja pokazuju da segeometrijom izlazne mlaznice može uticati i napneumatsku osetljivost komparatora i na promenumaksimalnog tolerancijskog polja kontrolisanogkomada.Na pneumatsku osetljivost pneumatskogkomparotera se prvenstveno utiče promenomprečnika konvergentno-divergentne mlaznicemerne grane. Povećanje pneumatske osetljivosti sepovećava smanjenjem prečnika mlaznice mernekomore, ali se i na taj način i sužava maksimalnotolerancijsko polje kontrolisane mere Za istegeometrijske parametre izlazne mlaznice i[1] Fortier, M.,: Application industrielles desécoulements gazeux à la vitesse critique,Revenu chaleur et Industrie, N°299, p.145.2.(1950)[2] Crnojevic C., Roy G., Bettahar A. and FlorentP.: Influence of regulator diameter andinjection nozzle geometry on flow structure inpneumatic dimensional control systems.Transacions of ASME, Journal of FluidsEngineering, Vol. 119., pp. 609-615 (1997).[3] Crnojević C., Skoko D.,: O nekim pojavamakoje utiču na rad pneumatskog komparatora.XXXI JUPITER konferencija, Zlatibor 2005.Zbornik radova (na CD-u), str. 5.14-5.17.[4] Roy, G., Crnojevic C., Bettahar A., FlorentP.and Vo-Ngoc, D., "Influence of nozzlegeometry in radial flow applications,"International Conference on Fluid andThermal Energy Conversion, Proc. Vol. 1,pp.363-368 (1994), Bali, Indonesia[5] Skoko, D., Magistarski rad, Mašinski fakultetBeograd 2007.[6] Skoko D., Crnojević C., : Eksperimentalnoodređivanje osetljivosti pneumatskogkomparatora. XXXII JUPITER konferencija,Zlatibor 2007. Zbornik radova , strana -5.43.438 13 th International Conference on Tribology – Serbiatrib’13
PNEUMATIC PROBE HEAD SELECTION FOR MACHINE PARTSINTERNAL MEASURES CONTROL WITH DIFFERNTIAL PNEUMATICCONTROLERApstract: In this paper, we analyze the influence of various parameters on the work of pneumatic controller.For that purpose, experimental installation is used, which enables the variation of the pressure ofcompressed air source, output nozzle and the diameter of the measuring branch nozzle of pneumaticcontroller. Special attention is devoted to pneumatic sensitivity and it is determined that it depends on thediameter of measuring branch nozzle and supply pressure. In addition, it is determined that pneumaticsensitivity increases with the decrease of the diameter of measuring branch nozzle. In this paper, we treatedof the selection of pneumatic measuring head of diferential pneumatic controler for control internalmeasures of machine partsKeywords: control, pneumatic measuring head, pneumatic controller, machine parts, internal measure,pneumatic sensitivity13 th International Conference on Tribology – Serbiatrib’13 439
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SerbianTribologySocietyFacultyofEng
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Serbian Tribology SocietyUniversity
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Supported byMinistry of Education,
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PrefaceThe International Conference
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ContentsPlenary Lectures1. THE GREE
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27. WEAR CHARACTERISTICS OF HYBRID
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Tribometry57. PRELIMINARY STUDY ON
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Plenary Lectures13 th International
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Serbian TribologySocietySERBIATRIB
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Figure 4. Diagram of the height and
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Realization of the approach is base
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edge without chamfer and smaller ra
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Figure 7. Accumulated tool life in
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Figure 13. Calculated and measured
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Friction deformation of the bronze
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engine cylinders of 2-cylinder-twot
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Table 1: Chemical composition of sa
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Table 4: Comparative wear-resistanc
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- measuring of coating thickness h
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Figure 5. Functional scheme of the
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Table 2. Test results for massive w
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knowledge transfer in the field ofm
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Table 1. Parameters of the electroc
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Figure 6. Wear resistance by linear
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coatings and observed their good we
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c)a)Figure 2: SEM images and micros
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Room temperature 300°CNi/µSiCNiNi
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COF [-] COF [-]Fig.9: COF graphs at
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about 260 nm is related to isolated
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contact’s conformity [18] they ob
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In order to calculate the metallic
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microscopic inspection of the Rp3 s
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otating plate. The shaft passes thr
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similar trends of variation are obs
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smooth, gear fiber-mild steel rough
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[2] Tabor, D.: “Friction and wear
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(10, 50 and 100 N) against surface
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[9] B.R. Gligorijevic, A. Vencl, B.
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dielectric properties, high resista
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parameter, Sv, was slightly influen
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dependence of roughness height and
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Polyethylenes with a molecular weig
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[9] K.S. Kanaga Karuppiah, A.L. Bru
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MgCO3•CaCO3 (13% Mg), and carnall
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fully compatible with MRI/MSCT imag
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5. CONCLUSIONThe magnesium alloys a
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Zinc dialkyldithiophosphate (ZDDP)
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C- Lower deposits with NPNA on comb
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films. Carraro et al. [10] examined
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PlateCount No.Critical Load ( N)120
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solid melt of ZA27 alloy using mech
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SiC particles are uniformly distrib
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in number of micro-cracks and clust
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PBT has the average values of the f
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mechanical pressure and thermal loa
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3. EXPERIMENTAL RESULTSTaking into
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[12] L. Blunt De, X. Jiang: Advance
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2. EXPERIMENTALTESTING2.1 MaterialT
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figure 3a it could be seen that the
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and lubrication is done so that the
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5. CONCLUSIONFigure 11. The accumul
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esistance was found for composite c
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onze, which is embedded within the
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The test contact pair meets the req
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complete. The SEM analysis maycontr
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tg( ) tg 100, [%] (2)tgwhere are:
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corresponding to the maximum value
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electrostatics [17]. Due to the fle
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250nm size have been observed, acco
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ETH Zurich, Switzerland, where all
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comparison with the synthetic reinf
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3. RESULTS AND DISCUSSION3.1 Micros
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(a)(b)Figure 4. Showing (a) variati
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composites. But the composite compo
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coated and uncoated region after ad
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has been measured between the top s
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Fig. 9 shows the wear track obtaine
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Mica samples preparationFor the ads
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According to the AFM results in fig
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[21] B. G. Sharma et al.: Character
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chemical vapor deposition method wi
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analysis (a) and an approximate che
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Table 3. Friction coefficients of s
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A.K.Oleynik, V.M.Matsevity, ea.]. /
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Most of the friction units of produ
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In order to provide both high parts
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Fig. 3. The comparison the criterio
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Table 3. Experimental and calculate
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For developing the numerical model
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,eccentricities and hydrodynamic pr
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hydrodynamic regime. However, for b
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to obtain the temperature distribut
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force (pressure) between two contac
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5E-06The total displacement [m]4.5E
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[11]. Figure 5 shows s the influenc
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efficiency of use, product quality,
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38GSA. The chemical composition, de
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niobium. It should be noted that fo
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Figure 1. Friction force on side su
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exploitation this changing is signi
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2. EFFICIENCY OF CYCLO DRIVEEfficie
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Figure 6. Dependence of cyclo drive
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common for their ability to be inst
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FNF (11)R sin cos11 21 22FNF
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Normal force [N]4000350030002500200
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analytical tests. The analytical te
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Table 4. Results of zero samples of
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noticeable, and by the end of explo
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4. PLASTIC BEARING APPLICATIONSRega
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For Elastohydrodynamic film thickne
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The results concluded for different
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For Thrust Force of 40KNKrytox 215
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Krytox 215 (µ = 0.03204 Pa.s)Figur
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- Reliable exploitation tools, prim
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In addition, as a result of cyclic
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AcknowledgementThe part of this res
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Thepressure angle can be calculated
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mechanism these parameters are fina
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causes big changes of their propert
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Table 2. Impact toughness of some t
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Figure 1. Appearance of fractured f
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implementation of these new manugac
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additional energy is dissipated due
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The adopted geometry parameters are
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4. CONCLUSIONTools of virtual produ
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Figure 2. Structure of the machinin
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3. ANALYSIS OF RESULTSThe results o
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Figure 15. Surface roughness regard
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From the analysis of the diagram it
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comparison from economic, energy co
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Advantages and disadvantages of tra
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The information provided by footwea
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Force (N)5,554,543,532,521,510,50Ex
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additives, that had been, until rec
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Figure 1. Test results for samples
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Table 7. Test results of oil sample
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Input parameters- Current intensity
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edge formed into a thin line. At th
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Lower values of current are not res
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Table 1. Chemical composition of si
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flowable at high temperatures and v
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holes (pits) emerge in the shape of
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[4] W. Schatt, K-P. Wieters, Pulver
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assumption allows us to use, instea
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where P is the load, a - radius of
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determination (total running in tim
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μm, compared with Figure 17, wich
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Serbian TribologySocietySERBIIATRIB
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Especially when the chain transfer
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is obvious that this isa so-calledw
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winches. The authors are inclined t
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find parameters of robot laser hard
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each of which is measured by the le
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Fractal dimensions were determined
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Figure 3. Modified force acting sch
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0.25Lubricant: L3DC 04Friction coef
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nanocomposites. The influence of fi
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4. RESULTS AND DISCUSSION4.1 Morpho
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Figure 6. Loading and unloadin vers
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3 8 12 1 4 2 4
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The material after qualifying the r
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It has already been mentioned that
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Degradation & Stability, Vol. 69, N
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conformance to researchers’ requi
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This part is assembled of pneumatic
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matrixes describe the state of the
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Page 407 and 408: M fr / T [-] [-]10.90.80.70.60.50.4
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Page 413 and 414: 4. DISCUSSIONAccording to the theor
Page 415 and 416: Serbian TribologySocietySERBIATRIB
Page 417 and 418: 2.1 The life cycle of the reportThe
Page 419: Obviously the report is checked and
Page 425 and 426: uticaja na osnovu kompozita, a time
Page 427 and 428: 5. ZAKLJUČCIStruktura tiksolivene
Page 429 and 430: dobijene različite karakteristike
Page 431 and 432: vizuelno, na dnevnoj svetlosti, pod
Page 433 and 434: LITERATURA[1] Зинченко В.
Page 435 and 436: Slika 1. Rotorni bager - glodar VII
Page 437 and 438: stvaraju sliku stanja i svoja zapa
Page 439 and 440: njihovih kotrljanih elemenata. Mere
Page 441 and 442: postupka i uticaja parametara depoz
Page 443 and 444: posledica različite raspodele mikr
Page 445 and 446: ZrO 2 Y 2 O 3 je takođe zbog oksid
Page 449 and 450: 3.2 Pneumatska osetljivostOblast pr
Page 451: p mg (δ), koji je zbog malih struj
Page 455 and 456: 1. Podsistem kopanja2. Podsistem pr
Page 457 and 458: Slika 3. Kriva habanjaNa tom dijagr
Page 459 and 460: Mjereni su parametri habanja i pril
Page 461 and 462: preše prevladavaju kombinirani uvj
Page 463 and 464: a) b)Slika 5. Karakteristična mikr
Page 465: varijantnih materijala u dostavnom
Page 468 and 469: Jovanović D. 414, 446KKaleicheva J
Page 470 and 471: CIP - Каталогизација
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