TY - JOUR
T1 - Dynamic characteristics of drilling spindle supported by radial permanent magnet bearings
AU - Chalageri, Gireesha R.
AU - Bekinal, Siddappa I.
AU - Doddamani, Mrityunjay
N1 - Funding Information:
Authors acknowledge the support provided by Manipal Academy of Higher Education, Manipal, ME Department of National Institute of Technology Karnataka, Surathkal and KLE Technological University, Hubballi for carrying out the research work.
Publisher Copyright:
© 2019 Elsevier Ltd.
PY - 2020/5/13
Y1 - 2020/5/13
N2 - This paper presents the drilling spindle dynamic and harmonic characteristics supported by radial permanent magnet bearings (PMBs). Initially, multi-ring radial PMB is designed in proportionate to the dimensions of drilling spindle using Coulombain model and vector approach. Dynamic analysis of spindle is carried out for three different combinations between conventional angular contact bearings (ACBs) and PMBs. First, the spindle was supported by only ACBs. Second, ACBs were completely replaced by radial PMBs and one ACB was used in between two PMBs making it as a hybrid bearing set (HBS) in the last case. The effect of bearing preload, bearing span and cutting force on the spindle natural frequency, harmonic frequency and critical speed of drilling spindle system was investigated through rotor dynamic analysis. This analysis focuses on the feasibility of successful usage of HBS in drilling machine spindles with higher critical speeds and maximum amplitudes produced due to chattered vibrations and tangential cutting forces.
AB - This paper presents the drilling spindle dynamic and harmonic characteristics supported by radial permanent magnet bearings (PMBs). Initially, multi-ring radial PMB is designed in proportionate to the dimensions of drilling spindle using Coulombain model and vector approach. Dynamic analysis of spindle is carried out for three different combinations between conventional angular contact bearings (ACBs) and PMBs. First, the spindle was supported by only ACBs. Second, ACBs were completely replaced by radial PMBs and one ACB was used in between two PMBs making it as a hybrid bearing set (HBS) in the last case. The effect of bearing preload, bearing span and cutting force on the spindle natural frequency, harmonic frequency and critical speed of drilling spindle system was investigated through rotor dynamic analysis. This analysis focuses on the feasibility of successful usage of HBS in drilling machine spindles with higher critical speeds and maximum amplitudes produced due to chattered vibrations and tangential cutting forces.
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U2 - 10.1016/j.matpr.2020.04.239
DO - 10.1016/j.matpr.2020.04.239
M3 - Conference article
AN - SCOPUS:85091299577
SN - 2214-7853
VL - 28
SP - 2190
EP - 2196
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
T2 - 2nd International Conference on Advances in Mechanical Engineering and Nanotechnology, ICAMEN 2020
Y2 - 28 February 2020 through 29 February 2020
ER -