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Wyszukujesz frazę "gears" wg kryterium: Temat


Tytuł:
Automating the modelling process of involute spur gears with straight teeth
Autorzy:
Markowski, T.
Mucha, J.
Witkowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/102929.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
involute cylindrical gears
Delphi programming language
gears modifications
Opis:
In the paper the possibility of using Delphi programming language in the design of the tooth profile was presented. A developed numerical application was used to generate a tooth profile of involute cylindrical gears with modification and without modification. The size of modifications of the tooth root and the addendum was compared with the parameters obtained from the analytical calculations and machining simulation of gears.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 19; 66-69
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of the elevator guides contamination on the braking process delay for selected progressive gears
Autorzy:
Longwic, R.
Szydło, K.
Powiązania:
https://bibliotekanauki.pl/articles/102105.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
elevator
progressive gears
Opis:
The authors’ tests results on the impact of the guiding system (the guides) contamination in the friction lift on the delay of progressive gears braking process are presented in this article. The tests were conducted using a free fall method and a test bench built for that purpose. In order to render all working conditions the guiding system of tested gears was lubricated with the most commonly used lubricating agents. Solid grease (SM), mineral oil (OL), the mixture of solid grease and quartz sand (S50) as well as the mixture of mineral oil and quartz sand (O50) were used.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 2; 1-7
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Savitzky-Golay method for the evaluation of deceleration of the friction lift
Autorzy:
Lonkwic, P.
Szydło, K.
Molski, S.
Powiązania:
https://bibliotekanauki.pl/articles/102303.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
safety gears
reliability
traction lift
progressive gears
Savitzky-Golay method
Opis:
Due to self-acting variability of operating conditions during the work of lifting devices, it is fundamental for the gears to stop the cabin at any clearance height. The operating conditions are changed by dust contamination influencing a proper braking process of the gear. This article presents the independent tests results. The impact of progressive gear geometry on the braking distance both in variable operating conditions and variable loading is analyzed. The tests were conducted for the gear applied in short distance transportation devices. Changing operating conditions were obtained by using various lubricating agents. The following five types of the gears were used for the tests: ASG100, PP16, PR2000, KB160. CHP 2000 gear was tested as a new solution. The tests were conducted using a free fall method. The test results obtained from an experiment were approximated by using Savitzky-Golay method.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 1; 138-146
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of geometry errors on the motion transmission of dual path gearing
Autorzy:
Pacana, J.
Pacana, A.
Powiązania:
https://bibliotekanauki.pl/articles/102719.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
gears
tooth pitch error
gears kinematics
motion transmission errors
FEM
Opis:
The article presents the numerical analysis of the impact of geometry errors on the motion transmission of dual path gearing. The strength calculations of the elements of the drive were made by means of the Finite Elements Method (FEM). The calculations were made for the two-dimensional models of the dual path gearing. In the first place, the drive of the error-free (theoretical) geometry was tested. Next, the modifications of the selected teeth were introduced to the calculation models. The aim of the modifications of the tooth profile was to simulate pitch errors in compliance with the admissible values defined by PN-ISO 1328-1:2015 norm “Cylindrical gears – ISO system of flank tolerance classification”. Finally, all the results were put together for comparison. The obtained results confirm the high irregularity of work gear as a result of errors tooth geometry.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 32; 94-100
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary research of prototypes helical gears for power transmission systems
Autorzy:
Sobolak, M.
Jagielowicz, P. E.
Powiązania:
https://bibliotekanauki.pl/articles/245597.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
rapid prototyping
bevel gears
Opis:
The toothed gears are used in the power transmission systems. It is result from advantages of them (e.g. efficiency, reliability, fatigue life, high-load transmission). In the power transmission systems for trucks, and for cars with back drive, gear pairs are used. In that case it is possible to transfer turning moment under right angle. The most common in use in so-called main axle are bevel or hypoid gear pairs. Differential gears are mainly built basis of straight bevel gears. The paper presents method of preliminary determination of usability bevel gears for transfer turning moment. The method uses gears' models which are made with Rapid Prototyping techniques. The gears are placed in the testbed, which enables to steady load of gear pair. The observation of tooth contact makes possible to preliminary evaluate of correctness of gear pair's working. The tooth contact's changes are observed during gear rotation. The direct observation of tooth gears can be done using transparent material for gears. Besides, it is possible to determine temporary tooth contact and its changes in function of gears' rotation for existing metal gear pairs. In order to analyse, it is necessary to make copy of existing gears vacuum cleaning method. It uses the silicone forms as a template to make copies. It should be use transparent material. The method enables to analyse tooth contact in gear pairs after lifetime, thereby evaluating impact of working on correctness of gear pairs' working.
Źródło:
Journal of KONES; 2009, 16, 3; 375-380
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Visualization of internal stress pattern in gears in power transmission systems using rapid prototyping (RP)
Wizualizacja naprężeń w kołach zębatych układów napędowych z wykorzystaniem metod RP
Autorzy:
Sobolak, M.
Budzik, G.
Powiązania:
https://bibliotekanauki.pl/articles/243874.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
rapid prototyping
gears
photoelasticity
Opis:
The paper contains description of an experimental method of stress pattern visualization. Mainly analytical methods and a Finite Element Method are used to determine internal stress pattern. Sometimes photo-elasticity is used. Model is made by copying real objects by casting from special optical-active resins. There is possible to put into use Rapid Prototyping methods. Some materials used in RP processes are optically active. In proposed solution of stress pattern visualization special models of gears are used. Models are made directly from optically active resin by Rapid Prototyping method - stereolitography. A transparent fotohardening optically active resin Sl5170 has been used to observe stress pattern in polarized light. Prototypes of gear are assembled in a special device and loaded by torque. The principle of a mechanical similarity was applied. In relation to the classic photo-elasticity method novelty is the use of the LCD monitor as a source of light and a camera with polarisation filter for observation and recording the distribution of internal stress pattern. The use of simulation of gear generating in CAD system and stereolitography method to produce a prototype allows you to eliminate the classic machining of gear at lower cost.
W artykule przedstawiono eksperymentalną metodę wyznaczania rozkładu naprężeń. W celu określenia rozkładu naprężeń używane są metody analityczne i komputerowe wykorzystujące metodę elementów skończonych. W niektórych przypadkach użycie znajduje elestooptyka. Modele do elastooptyki są kopiami rzeczywistych obiektów, wykonanymi z materiału czynnego optycznie. Możliwe jest zastosowanie techniki szybkiego prototypowania w celu wykonania takiego modeluo. Niektóre z materiałów używanych w szybkim prototypowaniu są czynne optycznie. W proponowanym rozwiązaniu w wizualizacji naprężeń w kołach zębatych układów napędowych używane są specjalne modele kół. Modele są wykonane bezpośrednio z żywicy czynnej optycznie metodą stereolitografii. Użyto przezroczystej, fotoutwardzalnej żywicy Sl5170 w celu wyznaczenia rozkładu naprężeń. Modele kół obserwowano w świetle spolaryzowanym. Koła zestawiono w specjalnym przyrządzie i obciążono momentem skręcającym. Zastosowano zasadę podobieństwa modelowego. W stosunku do klasycznej metody elastooptyki nowością jest zastosowanie monitora LCD jako źródła światła oraz aparatu fotograficznego z filtrem polaryzacyjnym do obserwacji i rejestracji rozkładu naprężeń. Zastosowanie symulacji obróbki obwiedniowej w systemie CAD oraz wytworzenie kół za pomocą stereolitografii elimnuje klasyczną obróbkę skrawaniem i przyczynia się do obniżenia kosztów badań.
Źródło:
Journal of KONES; 2008, 15, 2; 457-461
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of possibility of applying atypic al meshing in driving units of cars
Autorzy:
Kozik, B.
Budzik, G.
Pacana, J.
Powiązania:
https://bibliotekanauki.pl/articles/242388.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
gears
involute profile
atypical meshing
Opis:
A constant tendency in the development of gear transmission is aiming for increasing its load capacity and minimalizing its outside dimensions and weight. It is particularly important in automotive vehicles. In every type of transmission, among others in gear-boxes, mainly involute profile wheels are used. The work presents analysis of possibility of applying a typical meshing in driving units of cars. This kind of meshing can be alternative to involute meshing which is most widely used in gear transmission. Among existing solutions of this type, Nowikow meshing is applied most often. A different kind of concavo-convex gearing is BBW type gearing. The gearing is obtained by generation with a tool with reference profile in which tooth profile of a rack is an involute. The analysis of possibility of applying has been carried out with the exemplary concavo-convex BBW type gearing. In BBW type gearing a wheel with a smaller number of teeth has a positive profile curvature, and a cooperating wheel has a negative curvature. Teeth profiles are conjugate ones, transverse contact ratio is higher than l, so this kind of gearing may be used also in gears with straight teeth. What is more linear contact occurring along the whole width of mating teeth, in comparison to point contact in Nowikow meshing, creates possibilities of obtaining higher load capacity of gearing. BBW gearing based on involute-derivative tooth profiles is characterized by smaller sensitivity to the change of axle distance than Nowikow meshing.
Źródło:
Journal of KONES; 2009, 16, 2; 225-230
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimising the geometric parameters of a gear in a tractor transmission under constraints using kisssoft
Autorzy:
Can, Emre
Bozca, Mehmet
Powiązania:
https://bibliotekanauki.pl/articles/2204629.pdf
Data publikacji:
2023
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
gears
geometric parameters
optimisation
KISSsoft
Opis:
We optimise the speed gears in a tractor transmission with KISSsoft software under three constraints: input power torque, transmission system volume and the gear ratio for each speed. This study aimed to optimise the module, face width, gear quality, centre distance, number of teeth, helix angle, addendum modification coefficient and pressure angle for each speed while considering the above constraints based on an optimisation chart. Tooth bending stress, tooth contact stress, contact ratio and specific sliding were considered during optimisation. Additionally, the effects of changes in a module on the gear profiles, overlap ratio, number of teeth and weight of the gear pair were examined. Strength calculations of gear pairs that were optimised and defined for all geometric parameters with KISSsoft were calculated with the mathematical model described in ISO 6336, and results were then compared. Finally, backlash was minimised for all gear pairs as defined with geometric parameters, and all dimensions and tolerances were determined for gear inspection after manufacturing. A concept design was also presented. We conclude that both the KISSsoft results and mathematical model results are within the range of the target value.
Źródło:
Acta Mechanica et Automatica; 2023, 17, 2; 145--159
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bariery eksploatacyjne w przekładniach ślimakowych
Worm gears operating barriers
Autorzy:
Marciniak, T.
Ostrowski, D.
Powiązania:
https://bibliotekanauki.pl/articles/197636.pdf
Data publikacji:
2015
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
przekładnie ślimakowe
bariery w eksploatacji
trwałość przekładni
worm gears
barriers in operating
durability of gears
Opis:
Decydującym czynnikiem określającym trwałość przekładni ślimakowych są materiały, z których wykonane są elementy przekładni. W odróżnieniu od przekładni zębatych, praktycznie w większości przypadków, współpracujące elementy są wykonane z utwardzonej stali. W przekładniach ślimakowych normą jest współpraca utwardzonego ślimaka ze stosunkowo miękkim brązem. Zastosowanie innych materiałów nie przyniosło pozytywnych rezultatów. W związku z tym pojawiają się bariery eksploatacyjne, niewykazujące podobieństw w innych rodzajach przekładni. W artykule przedstawiono mechanizmy zużywania się przekładni ślimakowych, które w większości przypadków decydują o ich trwałości. Podane zostały podstawy teoretyczne wszystkich barier eksploatacyjnych, ze szczególnym uwzględnieniem bariery zużycia zmęczeniowego i ściernego, jako najczęściej ograniczających trwałość tych przekładni. Przedstawiono wyniki badań eksploatacyjnych oraz próby określenia trwałości w zależności od warunków eksploatacyjnych. Sformułowano zalecenia co do stosowanych materiałów konstrukcyjnych, warunków eksploatacji oraz oceny stopnia zużycia przekładni.
The main factor that characterize the durability of worm gears are the materials from which the elements are made. Distinct from toothed gear, in which, in most of cases collaborating elements are made from toughened steel, in worm gears the standard is collaborating of toughened worm and relatively soft worm wheel, made from bronze. Applications of different materials have not given good results. Due to this reason a worm gear operating barriers, which not similar to different types of gears, take place. The article presents the mechanism of worm gears utilization, which in most of cases decide about its durability. Theoretical basis of operating barriers have been given, with particular emphasis on fatigue and abrasive wear barriers, which are most common reason of durability limitation. Operating test results have been presented as well as trials, that were to determine the durability depending on operation conditions. Recommendations have been formulated for proper material selection, operating conditions as well as valuations of gear durability stage.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2015, 89; 79-87
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of polymer gears for auxiliary power transmission systems of automotive vehicles
Autorzy:
Budzik, G.
Sobolak, M.
Jagiełowicz, P. E.
Powiązania:
https://bibliotekanauki.pl/articles/247538.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
polymer gears
auxiliary power transmission systems
Opis:
he polymer gears owing to their advantages are used in auxiliary power transmission systems of automotive . For example, the gears occur in transmissions of drives of car wipers or drives of car windows. The polymers are mainly used owing to lower production cost than in steel gears. The better silent-running and corrosion z are their other advantages in comparison with steel gears. Unfortunately, the polymer gears are not devoid of disadvantages. The main disadvantages are the lower efficiency and the lower capacity and what follows — the bigger dimensions. The conservative attitude of design of polymer gears is still noticeable. As a rule, such gears e steel gears, but the polymer gears are designed with bigger module. The most probably owing costs and lack of proper design recommendations, for design of polymer gears is used geometry of classic steel gears, because the procedure of analytical strength calculations for classic gears is well-know. The gears made from polymers are built in the mould matrices. In constructions of many mechanisms, the gears can be replaced in case of consumption or damage, so the construction of such gears that can be produced in the machine shop equipped with gear generating e for standard gears, was justified. Nowadays, the constructions of mechanisms used in automotive vehicles are often not even dismountable, but the whole mechanism is changed. It is worth changing the attitude to design of such transmissions.  The method of gears production gives many opportunities.   The production of gears with ited geometry, also such geometry that is impossible to obtain using traditional methods of machining, is possible in the mould matrices.
Źródło:
Journal of KONES; 2010, 17, 4; 73-77
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Development and Modeling of an Innovative Process of Forming the Internal Toothing of Flange Coupling Spline Sleeves
Autorzy:
Michalczyk, J.
Wiewiórowska, S.
Muskalski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/350894.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
forging gears
FEM analysis
heat extrusion
Opis:
The article proposes the implementation of a novel method of plastic forming of internal toothing in flange spline sleeves. A method being the subject of Polish patent application P.416772 has been used for this purpose, which involves a combination of the scheme of the direct extrusion of a cone hollow with the die press forming of the wall to obtain a flange. The entire process takes place in a single technological sequence. The operations come one after another, so that there is no need for reheating the stock or carrying out intermediate soft annealing. The proposed method is assumed to be an alternative to the operation of press forming of internal spline sleeve toothing in a conical die [1] and to the operation of swaging on rotary swaging machines [2]. It is assumed that this method, too, is alternative to other technologies known from the literature and industrial practice, whose specifications and literature references will be indicated later on in this paper. Computer simulations of the flanged sleeve plastic forming process were performed using the commercial numerical program Forge®3D. During the numerical computations, the distributions of temperature fields were determined on the cross-section of the plastically formed product. The computations enabled also the visualization of the plastic flow of metal, especially in the toothing forming regions, and the determination of the energy and force parameters of the process.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 4; 1981-1986
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis and modelling of newly developed and unconventional processes of plastic forming of toothed gear elements
Autorzy:
Michalczyk, J.
Wiewiórowska, S.
Muskalski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/352513.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
forging
gears
FEM analysis
hot extrusion
Opis:
The article reports the results of a comparative analysis made for three novel unconventional gear wheel forging processes based on the authors’ patented [5,6,21] plastic forming methods developed chiefly for the purposes of extruding hollow products as well as valves and pins. These processes are distinguished by the fact that part of the tooling elements which are normally fixed during conventional forging are purposefully set in motion. This is intended to change the conditions of friction at the metal-tool contact surface and to induce additional thermal effects due to the transformation of the plastic deformation energy into thermal energy and, as a consequence, to improve the plastic flow of metal and to reduce the force parameters of the process.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 1; 87-94
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metodyka badania drganiowego przekładni zębatej
The toothead gear vibration investigation metodology
Autorzy:
Królicki, Z.
Żółtowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/328610.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
przekładnie zębate
drgania
toothed gears
vibrations
Opis:
W artykule przedstawiono problematykę związaną z badaniami drganiowymi przekładni zębatej. Głównym zagadnieniem jest próba opracowanie oryginalnej metodyki postępowania badawczego. Szczególny nacisk położono na merytoryczną poprawność i odpowiednią kolejność czynności badawczych. Uwzględnione zostały poszczególne etapy postępowania, od procesu planowania, poprzez dobór punktów pomiarowych i wybór symptomów, po redukcję danych.
Qualification his real shape is the main aim of technical objects state analysis relevant with his further exploitation. The modern systems of machines technical state supervision goes to elimination a " human factor ", and to gradual supersession of knowledge and experiences of diagnostic services with the automatic diagnostic systems, that working in mode "on - line ".
Źródło:
Diagnostyka; 2004, 32; 89-94
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formirovanie poverhnostnogo sloâ zubov zubčatogo koles v processe šlifovaniâ
Autorzy:
Zaborowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/360757.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
outher layer
teetch
gears after
grinding
Opis:
This paper presents the results of the formation of the surface layer hardness, roughness and size of retained austenite after the process of grinding the gear teeth. It has been shown that not only are changed stereometric the surface layer but also in its mechanical properties.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 35 (107); 174-179
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of surface roughness of transmission gear teeth made by different rapid prototyping methods
Autorzy:
Budzik, G.
Markowski, T.
Sobola, M.
Powiązania:
https://bibliotekanauki.pl/articles/244106.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
surface roughness
rapid prototyping
bevel gears
Opis:
Article presents analysis of surface roughness of aircraft and vehicle power transmission system gear teeth made by different Rapid Prototyping methods. Gear box models have been made by two rapid prototyping methods: stereolithography (SLA), three dimensional printing (3DP) and two rapid tooling methods: Vacuum Casting (VC), Low Pressure Injection (LPI). Surface roughness for rapid prototyping methods is determined mostly by layered system of building model. It depends on process parameters: layer thickness and model position in working space of RP machine. Vacuum Casting and Low Pressure Injection are Rapid Tooling technologies. For this technology final surface roughness is a reflection of surface parameters of tools (silicon mould, silicon matrix). The paper presents results of surface roughness measurements of gear made by few RP and RT methods. The most important thing was an analysis of surface roughness made by Rapid Tooling methods. In these methods surface roughness depends on surface parameters of basis RP model. For basis RP models finishing processing was applied. This process improves parameters of the surface. This research process allowed to define the influence of chosen RP and RT method and its parameters on surface roughness of gear tooth. It permitted to order rapid prototyping methods for application of power transmission prototype making process.
Źródło:
Journal of KONES; 2008, 15, 2; 29-34
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł

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