Thermal Stabilization Based Investigations over Quenching Media for Spindle in CNC Machining Centers
American Journal of Modern Energy
Volume 3, Issue 1, February 2017, Pages: 10-16
Received: Mar. 27, 2017; Accepted: Apr. 12, 2017; Published: May 8, 2017
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Kuldeep Verma, Department of Production and Industrial Engineering, PEC University of Technology, Chandigarh, India
Rajendra M. Belokar, Department of Production and Industrial Engineering, PEC University of Technology, Chandigarh, India
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The thermal expansion in spindles of computer numeric control (CNC) machines is widespread phenomenon around the world. Thermal change affects the positioning accuracy, repeatability, run out and backlash of the entire machining center. This thermal change in spindle is related with factors like speed and heat. The heat generated during running and machining of work-piece generates considerable amount of heat. This heat further elongates spindle and reduce the performance of spindle and degrade entire efficiency of system. In order to enhance the performance, it is mandatory to dissipate heat at much faster rate than heat generated during machine running and machining. In this paper, thermal equilibrium of spindle front bearing (that is at the nose of spindle) is stabilized up to maximum extent i.e. near to the negligible level. Initially, the spindle stabilized with continuous running at different speed and quenching of spindle by rotating hydraulic oil that will be quenched naturally around the periphery of spindle. Next, hydraulic oil is used for quenching by the circulation of water around the oil reservoir. This removes heat at faster rate. After stabilization of spindle, its impact on the horizontal, vertical and axial plane has been investigated. Finally, analytical investigations have been carried out to prove the validity of spindle stabilization process.
Spindle, CNC, Thermal Stabilization, Speed
To cite this article
Kuldeep Verma, Rajendra M. Belokar, Thermal Stabilization Based Investigations over Quenching Media for Spindle in CNC Machining Centers, American Journal of Modern Energy. Vol. 3, No. 1, 2017, pp. 10-16. doi: 10.11648/j.ajme.20170301.12
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