Temat: friction force - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effectiveness of friction force reduction in sliding motion depending on the frequency of longitudinal tangential vibrations, sliding velocity and normal pressure
Autorzy:: Leus, Mariusz
Gutowski, Paweł
Rybkiewicz, Marta
Powiązania:: https://bibliotekanauki.pl/articles/27314317.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: reduction of friction force
vibrations
experimental verification
Opis:: The article presents the results of experimental research and simulation analyses of the influence of slip velocity, normal pressures and vibration frequency on the effectiveness of friction force reduction carried out in sliding motion in the presence of forced tangential vibrations. In experimental studies, changes in the driving force were measured during the slip of the upper body over the vibrating lower body. The direction of these vibrations was parallel both to the contact plane and to the direction of movement of the shifted body. The simulation tests were carried out in the Matlab/Simulink environment through the use of numerical procedures that were specially created for this purpose. Dynamic friction models considering the tangential compliance of contact and the phenomenon of pre-sliding displacement were used for calculations. The paper presents the designated values of the so-called coefficient of average friction force reduction in sliding motion for the following friction pairs: steel C45–steel C45, steel C45–cast iron GGG40 and steel C45–polytetrafluoroethy-lene PTFE (Teflon). The results of numerical analyses were in good agreement with those of experimental tests. A significant dependence of the level of average friction force reduction on the frequency of forced vibrations, sliding velocity as well as the kind of sliding pair material, and normal pressures was shown.
Źródło:: Acta Mechanica et Automatica; 2023, 17, 4; 490--498
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Volnistost poverkhnosti pri obkatyvanijj tel vrashhenija polikami
Waviness of surface at rolling-off of bodies of rotation rollers
Autorzy:: Butakov, B.
Artyukh, V.
Powiązania:: https://bibliotekanauki.pl/articles/77575.pdf
Data publikacji:: 2013
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: rolling
waviness
sliding friction
mechanism
roller loading
friction force
Opis:: Formulated and reason appearance of waviness is experimentally grounded at a rolling toroobraznymi rollers is oscillation of effort of rolling from the presence of large forces of sliding friction in the mechanism of loading of roller.
Źródło:: Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 2
1730-8658
Pojawia się w:: Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Forces and stresses at tires area contact with road pavements for cars and light trucks
Autorzy:: Vasilievich, M. N.
Kasimbekovich, S. A.
Powiązania:: https://bibliotekanauki.pl/articles/1519679.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
Tematy:: ire
road surface
contact area
friction force
stress
Opis:: This paper describes methods and results of experimental investigations of forces and stresses at the tire contact area. A dynamometric MADI platform with a plate of a specified roughness was used to determine the dynamic influence of a car wheel at different speeds and loads. In the investigation it was determined how the forces generated at wheel contact with the pavement are influenced by air pressure in tires, pavement roughness and vehicle velocity.
Źródło:: Structure and Environment; 2015, 7, 2; 80-84
2081-1500
Pojawia się w:: Structure and Environment
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Method for estimating the static friction degree in the slide pair of the miniaturised electrohydraulic servomechanism
Autorzy:: Ułanowicz, L.
Żyluk, A.
Powiązania:: https://bibliotekanauki.pl/articles/245112.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: operation
hydraulic drive
electrohydraulic servomechanism
pressure
friction force
Opis:: One of the most important parameters specifying the usability of the miniaturised electrohydraulic servomechanism includes a static friction degree in its slide pairs, i.e. resistance of the slider’s movement from rest after some time of its staying at rest under pressure. Therefore, at the stage of designing and construction of the electrohydraulic servomechanism, it is important to determine the greatest static friction degree, which may arise in the slider hydraulic pair of this device during its operation. The objective of this article is to present a method for estimating the maximum static friction values in the slide pair based on the extreme value theory. The operation and loading conditions of the slide pair of the electrohydraulic servomechanism for the unmanned aircraft control system were described. The procedure for estimating the maximum static friction degree in the slide pair with the use of the extreme and probabilistic grid was presented. The extreme and probabilistic grid structure was based on the Gumbel probability graph. The graphic presentation of results of the static friction experimental studies in the slide pair on the extreme and probabilistic grid was discussed. By using the graphics method, the empirical dependence of the static friction force in the slide pair on the working fluid pressure in the hydraulic drive (loading conditions) was determined. A practical example of estimating the maximum values of the static friction force that may occur in the slider hydraulic pair of the miniaturized electrohydraulic servomechanism is shown.
Źródło:: Journal of KONES; 2018, 25, 2; 399-407
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Problems of Friction Force Measurement between Cylindrical Outdoor and Internal Slide Parts
Autorzy:: Monieta, J.
Powiązania:: https://bibliotekanauki.pl/articles/2064979.pdf
Data publikacji:: 2018
Wydawca:: STE GROUP
Tematy:: mechanical object
guide and cylinder
measurement
friction force
Opis:: The article presents the determination of an exemplary measure in the assessment of the technical state of sets of mechanical objects at the stage of manufacture, use and maintenance. The technical state of the assemblies is influenced by the quality of the friction-cooperating elements, the quality of basic functions, the surroundings and the diameter clearance of kinematic node components. Energy wasted to overcome the frictional resistance is a significant part of the energy supplied, which is why current friction losses are minimized. The article includes analysis of the phenomena occurring in the cylindrical pairs in the presence of static and kinetic friction. The many factors affecting the course and values of friction force between cylindrical elements performing relative reciprocating motion have been indicated. The subject of the article is the method of measuring the friction force between a fixed and movable cylindrical element of the mechanical object. The gradual increase of the friction force component takes place by means of easily accessible force. The results of experimental tests of the friction force in different laboratory conditions under are also included. The effect on the measured friction force was investigated: of friction elements geometry and the surface condition after manufacture and/or operation. Scatter results of static friction force depending on the geometry and surface state can be significant. Examples of surface state images are shown. A friction force model was also developed depending on factors affecting its value.
Źródło:: Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 19--25
2545-2827
Pojawia się w:: Multidisciplinary Aspects of Production Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The friction force and friction coefficient in the journal sliding bearing ferrofluid lubricated with different concentrations of magnetic particles
Autorzy:: Frycz, M.
Miszczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/247265.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: hydrodynamic pressure
capacity
friction force
friction coefficient
ferrofluid
numeric calculation
Opis:: There is an important operational parameter in the case of sliding bearings are friction forces and coefficient of friction. It depends on how much proportions of heat in the gap of the oil film from the value of the friction force. Ferrofluid lubricated sliding bearings have specific structure and are suitable only for use in specific cases. We may use them in the absence of gravity, vacuum, or in case of strong magnetic fields or radioactive. Maintenance of lubricant in the oil-gap as well as the viscosity change occurs through controlling of the external magnetic field. Change of the value of viscosity and mass forces (magnetic forces) in the equation of momentum depends on the concentration of magnetic particles and the intensity of external magnetic field. The aim of this paper is to present the influence of concentration of magnetic particles on the friction force value and coefficient of friction. The numerical calculations of friction forces and friction coefficient have been performed before setting the hydrodynamic pressure and a lift force from the Reynolds-type equation. Reynolds-type equation has been derived from basic equations, ie equations of momentum and equations of stream's continuity. There have been also used Maxwell's equations for the ferrofluid in the case of stationary magnetic field's existence. It has been assumed stationary and laminar flow of lubricant liquid and the isothermal model for lubrication of slide bearings. As the constitutive equation has been used Rivlin-Ericksen one. The cylindrical journal bearing of finite length with the smooth sleeve of whole angle of a belt has been taken into consideration. In a thin layer of oil film has been assumed constancy of the oil density with temperature changes and the independence of the oil's thermal conductivity coefficient from thermal changes. The viscosity of the oil depends mainly on the magnetic field.
Źródło:: Journal of KONES; 2011, 18, 4; 113-120
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The level of friction force reduction in sliding motion versus the amplitude and frequency of tangential vibrations
Poziom redukcji siły tarcia w ruchu ślizgowym w funkcji amplitudy i częstotliwości drgań stycznych
Autorzy:: Leus, M.
Gutowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/188233.pdf
Data publikacji:: 2016
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: reduction of friction force
vibrations
redukcja siły tarcia
drgania
Opis:: This work presents the results of comparative analyses of the influence of tangential longitudinal and tangential transverse vibrations on friction force in sliding motion. The analyses were conducted in the function of two principal vibrations parameters such as the frequency f and amplitude u₀. It has been demonstrated that, during longitudinal vibrations, the amplitude va of their velocity constitutes a key parameter on whose magnitude the initiation of reduction in friction force depends. However, the level of the reduction cannot be determined unequivocally based on the magnitude of this parameter alone. Analyses were carried out in the Matlab-Simulink environment with the use of our own original models and computational procedures utilizing Dahl’s, Dupont’s and LuGre dynamic friction models for the description of friction force. The results of simulating analyses were experimentally verified.
W pracy przedstawiono wyniki analiz porównawczych oddziaływania drgań stycznych wzdłużnych i drgań poprzecznych na siłę tarcia w ruchu ślizgowym. Analizy przeprowadzono w funkcji dwóch podstawowych parametrów drgań, jakimi są częstotliwość f i amplituda u₀. Wykazano, że przy drganiach wzdłużnych amplituda va ich prędkości jest parametrem kluczowym, od wartości, którego zależy wystąpienie redukcji siły tarcia. Jednak poziomu tej redukcji nie można określić jednoznacznie tylko na podstawie wartości tego parametru. Analizy przeprowadzono w środowisku Matlab/Simulink, przy wykorzystaniu oryginalnych, własnych modeli i procedur obliczeniowych wykorzystujących do opisu siły tarcia dynamiczne modele tarcia Dahla, Duponta i LuGre. Wyniki analiz symulacyjnych zweryfikowano doświadczalnie.
Źródło:: Tribologia; 2016, 267, 3; 129-138
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Occurrence of stick-slip phenomenon
O zjawisku typu stick-slip
Autorzy:: Awrejcewicz, J.
Olejnik, P.
Powiązania:: https://bibliotekanauki.pl/articles/280830.pdf
Data publikacji:: 2007
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: stick-slip dynamics
friction force model
numerical analysis
experiment
Opis:: A self-excited system wit h unilateral friction contact modelled by a two degrees-of-freedom mechanical system, where the normaI farce varies during displacement of a block has been studied. The constructed real laboratory rig approximates the investigated system, and it includes feedback reinforcement of the friction force acting on the vibrated block. Some methods of data acquisition and data handling procedures are proposed for experimentally observed results and data collection. A novel static friction force model for both positive and negative velocities of the base is proposed.
Analizie poddany jest układ samowzbudny z jednostronnym kontaktem ciernym, który zamodelowano jako układ mechaniczny o dwóch stopniach z tarciem oraz ze zmienną siłą nacisku wywieraną na podstawę podczas przemieszczenia się badanego ciała sztywnego. Skonstruowane stanowisko doświadczalne przybliża w pewnym stopniu rozważany układ i zawiera sprzężenie ruchu drgającego ciała z siłą normalną pochodzącą od nacisku. Zgodnie z obserwacjami eksperymentalnymi i dla zmierzonych sygnałów podano metody akwizycji danych oraz procedury ich obsługi. Zaproponowano nowy, statyczny model siły tarcia dla odpowiednich dodatnich i ujemnych prędkości przemieszczania się podstawy.
Źródło:: Journal of Theoretical and Applied Mechanics; 2007, 45, 1; 33-40
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Effect of friction force determination method on results obtained from model of gas flow from combustion chamber to the crankcase
Autorzy:: Koszałka, G.
Niewczas, A.
Guzik, M.
Powiązania:: https://bibliotekanauki.pl/articles/245664.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
blowby
piston ring
friction force
mathematical model
Opis:: The paper presents investigation of the influence of the friction force calculation method on the results of simulations run with the use of the model ofgas flow from the combustion chamber to the crankcase and piston rings motion in the grooves. The first series of simulations was run using the gas flow and ring motion model in which the friction force was calculated from the empirical equation. The second series was run with the use of the gas flow and ring motion model fully integrated with the ring lubrication model. In that case the friction force was derived from the hydrodynamic model of ring lubrication. Comparison of the results obtained in the first and second series of simulations indicated that despite the fact that the friction forces calculated with these two methods differed considerably, the method of friction force calculation had insignificant effect. This refers to the ąuantities determined in the simulations which are most important from practical point of view - i.e. displacements of the rings in the grooves, pressure courses in inter-ring regions and blowby rate. It is not necessary to integrate the gas flow and ring motion model with the model of ring lubrication, and doing so to complicate it very much, if the aim of the calculations is simulation of blowby and rings behaviour in the grooves.
Źródło:: Journal of KONES; 2009, 16, 4; 223-239
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Analizy porównawcze wpływu drgań stycznych poprzecznych i wzdłużnych na siłę tarcia w ruchu ślizgowym
The comparative analyses of the influence of tangential transverse and longitudinal vibrations on friction force in sliding motion
Autorzy:: Gutowski, P.
Leus, M.
Powiązania:: https://bibliotekanauki.pl/articles/190597.pdf
Data publikacji:: 2013
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: redukcja siły tarcia
drgania
reduction of friction force
vibrations
Opis:: W pracy przedstawiono oryginalny model obliczeniowy do analizy wpływu drgań stycznych poprzecznych na siłę tarcia w ruchu ślizgowym. Model ten oprogramowano w środowisku Matlab/Simulink i wykorzystano w obliczeniach symulacyjnych zmian siły tarcia pod wpływem drgań wymuszonych podłoża. Podobne analizy przeprowadzono przy wymuszeniu w kierunku zgodnym z kierunkiem realizowanego przesuwu. Uzyskano bardzo dobrą zgodność z wynikami badań doświadczalnych.
The original computational model for the analyses of the influence of tangential transverse vibrations of the foundation on friction force in sliding motion is presented in this paper. This model was implemented in a Matlab/Simulink environment and was used in simulation analyses of changes of friction force under the influence of forced vibrations of the foundation. Similar analyses were carried out for vibrations excited in the longitudinal direction. An excellent agreement of the simulation analyses results with those obtained experimentally was achieved.
Źródło:: Tribologia; 2013, 2; 69-79
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Acoustic emission as friction force indicator after test stands experiments
Autorzy:: Ziegler, B.
Miszczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/242687.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: non-destructive testing
acoustic emission
plain bearing
friction force
Opis:: This paper describes the use of acoustic emission measurement as an indicator of friction force into hydrodynamic journal bearings. The parameters load, speed, friction force, oil-temperature as well as the displacement of the sleeve are mainly measured in mutual dependence in journal plain bearing test stands. The friction force can not be measured directly, it must be calculated from the reaction force of the sleeve. Many different constructions are in use with the aim to load the bearing with a minimized influence of friction force measurement. Because of the huge influence to the friction force it is desirable to have parameters that are corresponding with it and are independent of the bearing load. We investigate the applicability of the acoustic emission analysis to indicate the friction force at an existing plain bearing test stand. The adoption of the acoustic emission measurement system (the diversion of the waves from the sleeve, the wave propagation through the AE transducer, the measurement chain and the damping of the mechanical and electrical disturbance) onto the test stand is described.
Źródło:: Journal of KONES; 2007, 14, 4; 579-586
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Researches on friction force between valve made of tial and its guide made of phosphorous bronze
Autorzy:: Siczek, K.
Powiązania:: https://bibliotekanauki.pl/articles/243568.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: valvetrain
lightweight valve
friction force
TiAl alloy
phosphorous bronze
Opis:: A lightweight valve can be one made of steel but with a drilled stem. Another one can be made of TiAl alloys and its stem can be full or drilled. Lightweight valve can be also ceramic one made of Si3N4. Such valves can mate with guides made of cast iron or of phosphorous bronze in varying conditions in their common contact zone. The aim of researches has been to measure friction force in contact zone between valve stem made of TiAl alloy and its guide made of phosphorous bronze, in the absence of oil. The conditions of room temperature and of the atmosphere pressure have been used during experiment. Mentioned researches have been provided in tester, which design has been presented in the article. The loading of contact zone has varied periodically during serie. The displacement and acceleration of valve and the force during its impact into seat insert have been measured during tests. Additionally the sound level has been measured, either. Tests have been provided for different frequency of driving force. Obtained results of researches has been shown in the article. In all cases the measured sound level have been equal 94 dBA, when sound level of laboratory environment has been equal 40 dBA. Values for coefficient of friction between valve stem and its guide can change from 0.12 to 0.16 and decrease almost linearly with increasing of loading frequency. Values of dry friction coefficient between valve stem made of TiAl alloy and coated by chrome and its guide made of phosphorous bronze can be smaller up to 17% than values obtained in case of valve stem coated by nc-WC/a-C:H mating with a guide made of cast iron.
Źródło:: Journal of KONES; 2013, 20, 1; 295-301
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Analysis of the influence of the changes in the value of dynamic viscosity coefficient in the direction of oil film thickness on the journal bearing load carrying capacity
Autorzy:: Miszczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/243539.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: slide journal bearing
load carrying capacity
friction force
friction coefficient
numerical calculation
Opis:: This article presents the results of numerical calculations of the hydrodynamic pressure distribution, load carrying capacity, friction force and friction coefficient of the slide journal bearing, if the assumed model of hydrodynamic lubrication takes into account the dependence of oil viscosity values on its temperature in all three directions of the adopted coordinate system, in particular, also across the thickness of the lubricant layer. This research considered the slide journal bearing lubricated with the Newtonian oil. The flow of oil was modelled as laminar and stationary. The bearing bushing had a full angle of wrap and its surfaces were smooth. In order to obtain hydrodynamic pressure distributions, the Reynolds type equation was numerically solved by application of the finite difference method (FDM). The numerical procedures for this research were prepared with the Mathcad 15 software. When adopting the classic models and simplifications for the hydrodynamic lubrication and a thin boundary layer, it is assumed, that the hydrodynamic pressure of lubricating oil does not depend on the position measured across the height of the lubrication gap. On the other hand, it is known, that the dynamic viscosity strongly depends on the temperature, which is a function of all three spatial variables. The aim of this work is to include, in the hydrodynamic lubrication model, the changes of viscosity in the direction of oil film thickness, and to investigate how it will affect the hydrodynamic pressure distribution and load carrying capacity of the journal bearing.
Źródło:: Journal of KONES; 2018, 25, 3; 355-362
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Analiza wpływu parametrów drgań stycznych i prędkości poślizgu na siłę tarcia w ruchu ślizgowym
Analysis of the influence of parameters of tangential vibrations and velocity of drive on friction force in sliding motion
Autorzy:: Leus, M.
Gutowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/189365.pdf
Data publikacji:: 2015
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: redukcja siły tarcia
drgania
modelowanie
friction force reduction
vibrations
modelling
Opis:: W pracy przedstawiono wyniki analiz symulacyjnych i badań doświadczalnych wpływu kierunku i parametrów drgań stycznych oraz prędkości poślizgu na siłę tarcia i siłę napędu w ruchu ślizgowym. Omówiono wykorzystane w analizach symulacyjnych oryginalne, dynamiczne modele obliczeniowe. Wykazano, że siła tarcia w ruchu ślizgowym, w obecności drgań stycznych, w istotny sposób zależy od prędkości poślizgu. Uzyskano bardzo dobrą zgodność wyników analiz symulacyjnych i badań doświadczalnych.
The simulation analyses and experimental tests results of the influence of the direction and parameters of tangential vibrations and the velocity of drive on friction and driving forces in sliding motion are presented in this paper. The original computational dynamic models were used in simulation analyses. These models are described with additional comments. Very good consistency of simulation analyses and experimental tests results were achieved. It was demonstrated that the friction force in sliding motion in the presence of tangential vibrations strongly depends of sliding velocity.
Źródło:: Tribologia; 2015, 3; 99-107
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Wpływ tarcia na sprawność maszyn szyjących w przemyśle obuwniczym
The effect of friction on the efficiency of sewing machines in the shoe industry
Autorzy:: Suwart, R.
Powiązania:: https://bibliotekanauki.pl/articles/188718.pdf
Data publikacji:: 2013
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: siła tarcia
praca
optymalizacja
sprawność
friction force
work
optimization
efficiency
Opis:: W artykule zamieszczono wyniki badań tribologicznych maszyny szyjącej z tradycyjnym układem napędowym w odniesieniu do układu napędowego z dodatkowo zastosowanym falownikiem. Innowacyjność opracowania polega na propozycji sterowania maszynami szyjącymi w przemyśle obuwniczym za pomocą falownika, dzięki czemu uzyskuje się znaczne oszczędności energii elektrycznej. Stwierdzono, że sprawność procesu szycia materiałów obuwniczych jest bardzo mała – wynosi od poniżej 1% przy sterowaniu sprzęgłem tarciowym do ok. 3% przy sterowaniu falownikiem. Opracowanie wykazało, że zastąpienie tradycyjnego układu napędowego maszyny szyjącej płaskiej (sprzęgło – silnik trójfazowy) rozwiązaniem z zastosowaniem falownika lub wymiana na silnik z możliwością płynnej regulacji obrotów daje wymierne korzyści ekonomiczne – mniejsze zużycie energii podczas szycia od 2 do 4 razy w zależności od prędkości szycia. Opisane w publikacji badania zrealizowane zostały na Wydziale Materiałoznawstwa, Technologii i Wzornictwa Uniwersytetu Technologiczno-Humanistycznego w Radomiu.
This paper contains a description of tests and results obtained from the tribological system of a sewing machine with a traditional power transmission system compared with a power transmission system with an additionaly applied inverter. The recommedation for sewing machine’s controling by implying the inverter, which results in substantial energy savings, constitutes the innovative part of this study. It was determined that the efficiency of the process of sewing footwear materials is very low – it ranges from less than 1% by using a friction clutch to approx. 3% when inverter was applied. This study deomonstrates that replacing the traditional power transmission system of the sewing machine (clutch – three phase motor) by a solution when either an inverter is applied or the engine is replaced by an engine capable of continous rotation’s change gives considerable economic benefits, i.e. reduced energy consuption during the sewing – less 2-4 times depending on the sewing speed. The study shows that the replacement of the traditional powertrain flat sewing machine (clutch – three-phase motor) for a solution using the inverter or replace the engine with the ability of continuously change the rotation gives tangible economic benefits, reduced energy consumption during the sewing of two to four times, depending on the speed sewing. The tests described in this paper were conducted at the Department of Materials Science, Technology and Design of Kazimierz Pulaski University of Technology and Humanities in Radom.
Źródło:: Tribologia; 2013, 6; 135-145
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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