Page 23 - AMTDC Annual Report 2019-20flipbook
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Static analysis results provide how much the spindle
shaft is deflecting and ways to compensate the spindle
deflection by means of material selection, geometric Uniqueness of the New
parameters of the spindle with proper bearing placements.
Based on the results, geometric parameters of the spindle Version of the Abrasive
are adjusted with various iterations to meet the Cutter
requirements to provide a high rigid spindle. Double row
angular contact bearings were placed on both steps of the
spindle shaft to withstand both the axial and radial loads As the spindle is directly driven by
generated during cutting and also to arrest the spindle the motor, the entire motor power is
deflection. A 3D model of the spindle shaft was designed available for cutting thus enhancing the
with the obtained geometric parameters. flexible pin type cutting efficiency of the system by 40%
coupling is used to connect the spindle shaft and the motor over that compared to belt-driven
to provide the direct drive mechanism. In this flexible pin spindles. The developed technology
type coupling, the rubber bushing absorbs shocks and using higher stiffness spindle and
vibration during the cutting process. flexible pin-type coupling ensures
The engine mounting frame is a mechanical structure minimized deflection of spindle during
which is supposed to carry various combinations of loads. cutting and vibration free generation of
Motors are mounted on the frame to carry its weight, to surfaces thereby reducing chatter and
maintain its alignment and to assist in carrying the dynamic burn marks. This heavy duty, precisely
loads. manufactured machine offering
Final model developed based on both the analytical efficient, versatile and high-quality
calculation and FEA analysis. Critical components like cutting, is useful for cutting of samples
spindle shaft, bearings, flexible pin type coupling and motor from large sized castings and forgings
mounting frame are designed in such a way that it such as engine blocks, wheel hubs,
withstands the vibrations and shocks produced during the brake drums, etc. This abrasive cutter's
cutting process. large workspace and simple design also
enables rapid sectioning of samples.
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AMTDC Annual Report | 2019-20
