Static and Dynamic Analysis of Lathe Spindle using ANSYS
Ayush Anand , Himel Roy
1Vellore Institute of Technology, Tamil Nadu, India.
2 School of Mechanical Department
There are various parameters over which the performance of
the spindle depends. This paper deals with the different
parameters of the spindle to find the optimized model from the
existing one. Based on the FEM, the static and dynamic
analysis has been performed. In the static analysis it considers
parameters such as material of the spindle, bearing span, Morse
taper. The dynamic analysis has been performed corresponding
to the optimized static model and modal shapes are obtained.
With the help of Campbell diagram, critical velocity has been
found out. The harmonic response is performed to check the
design and with the required speed transient analysis is
performed. All the analysis is performed in ANSYS
Keywords: spindle; bearing; FEM; static analysis; dynamic
analysis; Campbell diagram; harmonic response; transient analysis
The analysis of spindle is performed on ANSYS Workbench
18’. Spindle structure and bearing plays an important role in
failure of spindle bearing system. Here, we proposed the optimization of spindle considering different parameters. The
result of static and dynamic analysis are in safe range.
The spindle consists of two sets of angular contact bearings
with grease lubrication. The optimized material is Alloy 4140
steel with bearing span of 101mm, MT 6, and spindle nose taper
of 7.5 degree. The deflection of the system is 2.2899 m.
According to the modal analysis the frequencies are 3087.5 Hz,
3088.6 Hz, 7897.9 Hz, 7898.9 Hz, 8012.5Hz and 9080.4 Hz
and from the Campbell diagram the critical velocities and
frequency found are 185274 rpm, 185286 rpm and 2912.9 Hz,
3272.1 Hz respectively. Also from harmonic analysis the
critical frequencies are 2912.9 Hz and 3272.1 Hz. The transient
analysis is performed at 6000 rpm and the deformation is
The ANSYS work bench is used by the designers as tools,
which increases the product quality, reduces cost and consumes
less time in design and development.
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