نتایج جستجو برای: gear misalignment
تعداد نتایج: 18798 فیلتر نتایج به سال:
precision forging process is widely used for the production of spur gears due to its advantages such asimproved strength and surface finish, little waste of materials and reduction in the machining time ofthe gear. an important aspect of precision forging process is the load required to perform the processsuccessfully and design the forging tools. in this research, a new kinematically admissibl...
Real exchange rate misalignment means that the real exchange rate deviates from its equilibrium level and is the cause of many domestic and global economic problems. This index is considered as an important indicator in foreign competition and in case of adopting an inappropriate exchange rate regime; it may create economic instability and affect economic performance. This issue is important in...
Recently, bicycles are used as exercising machines and traffic vehicles. Planetary gear trains can be used as the transmission systems for bicycles. The purpose of this work is to propose a design methodology for the kinematic design of automatic gear transmissions with planetary gear trains for bicycles. First, applying the check list method (combining and extending methods), the design concep...
Original scientific paper This paper proposes a novel design of an 8-speed internal gear hub which consists of a distributed-flow-type planetary gear mechanism and a rotary gearshifting control mechanism. The distributed-flow-type planetary gear mechanism comprises two transmission units and one differential unit to provide eight forward gears. A clutching sequence table and a set of feasible s...
The effective real exchange rate is one of the variables that can Misalignment from equilibrium values, Performance affects macroeconomic indicators and creates an unstable and uncertain environment in the economy. Therefore, in order to investigate the factors affecting the real effective exchange rate Misalignment in OPEC member countries during the period 1980-1980, first, in the framework o...
Abstract I n this paper, we investigate the existence and the nature of real exchange rate misalignment in Organization of the Petroleum Exporting Countries (OPEC). To do this we estimated a cross country basic real exchange rate determination model for 1990-2012 and extracted historic trend of misalignment. The results imply that all OPEC countries have had misalignment -...
The purpose of this study is to investigate the impact of exchange rate misalignment on inflation persistence. For this purpose, Vector Auto Regression method and Markov Switching model is used for quarterly data during 1989:4 -2014:3. The results show that, the impact of liquidity growth and exchange rate misalignment on inflation persistence is positive. On the other hand, GDP growth has a ne...
Isometric modification is proposed as a new method of axial modification of spur bevel gear. Based on the gear geometry theory and the normal meshing motion equation of gear pairs, changes of meshing points and angles are analyzed and the effect of axial modification on meshing movement of gear pairs is discussed. After that, a method of drawing spherical involute with the aid of SolidWorks sof...
This thesis focuses on reliability when testing gear efficiency and on how gear mesh efficiency can be increased without detrimental effects on the gears. Test equipment commonly used in gear research was analysed to identify important parameters for gear efficiency testing. The effect of the bearing model’s load-dependent losses on gear mesh efficiency was also investigated. Two different surf...
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