Evaluation of Thermal Characteristics of Oil Chiller for Various Coolants in CNC Machines by CFD Analysis
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 8
Abstract
Machine tools are characterized by their large number of spindle speeds and feeds to cope with the requirements of machining parts of different materials and dimensions using different types of cutting tool materials and geometries. Gearbox is mainly used in machine tool main-spindle drives, test-benches and applications where high torque is needed. Gearbox is mounted directly to the spindle. The gearbox is dedicated for today’s high speed requirements in machine tools. The spindle gear box is lubricated with oils for the smooth operation of gears. These oils will be heated during the process. The gearbox is fully sealed, and the gears are immersed in lubricant, which is kept cool by an circulating oil chiller. In this thesis, heat transfer characteristics of the lubricant oil in the oil chiller are determined by CFD analysis when different lubricants are used. The lubricants considered in this thesis are hydraulic oil 32, Spindle Oil 22. The materials used for condenser and evaporator are Steel, Cast Iron, Copper and Aluminum alloy. 3D model chiller is drawn in Pro/Engineer and CFD analysis is done in Ansys to obtain the results are static pressure, velocity magnitude, heat transfer coefficient, heat transfer rate and mass transfer rate for spindle oil and hydraulic oil fluid mediums. And finally comparative analysis of thermal characteristics also done by both spindle oil and hydraulic oil.
Authors and Affiliations
Srikanth Komati, Dr. I Raja Sri , P. Srinivasulu, P. Raju
Keywords
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