3856

3639

كارشناسي ارشد

ساخت و توليد

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك

1386

نه، 82، [II] ص:مصور، جدول، نمودار

ص.ع.:به فارسي و انگليسي

محسن صفوي

سعيد ميريان

26/1/86

ناصر نهضت، جواد زركوب

مهندسي مكانيك

ID3639

به فارسي و انگليسي: قابل رويت در نسخه ديجيتال

IUT 77142Degree Master of ScienceTitle Manufacturing of Spur Spiral Bevel Gears by Designing a Forth Axis on a 3 Axis CNC Milling Machine and Comparing it with Traditional MFG procedureAuthor Mehdi KarimianSupervisor Dr S Mohsen SafaviDepartment Mechanical engineeringDate 2007 November 18Language PersianAbstract Gears are one of the most important mechanical elements which transmit power rotaryor linear motion without slipping Dependent on their type and application or requiredstrength and resistance gears are manufactured by casting extruding forging powdermetallurgy plastic molding gear rolling and machining Among these processes machining is more frequently used for high precise gears Spiral Bevel Gears SBG areused to transmit power between angularly crossed shafts Spiral bevel gear is a termgenerally used in case of bevel gears that have teeth curved longitudinally along the lengthof the teeth Design and manufacturing of spiral bevel gears is still a hot topic of currentresearches As far as manufacturing is concerned the gears are machined by a special typeof machine tools such as gear hobbing and shaping machines Recently special CNCbased gear manufacturing machine tools are used in industrial practice Since a large investment is required for obtaining various kinds of special machineryand cutters dedicated to special CNC manufacturing machines it s attempted tomanufacture spiral bevel gears by using a three axis CNC milling machine interfaced withan additional PLC module as an additional rotary axis In terms of production rate it isobvious that this method will be lower than that of special machine tool but the presentedmethod is more economical than using special machine tools The traditional procedure which will be introduced later is quite slow and considerablecare is required by the operator The presented procedure has more accuracy comparing tothe traditional method and also the various operations are completed automatically aftermachine setup Keyword CNC Spiral Bevel Gears PLC Inverter Encoder Photo electric sensors proximity sensors CAD CAM CAE

محسن صفوي

سعيد ميريان

ناصر نهضت، جواد زركوب