Page 15 - Annual Report_AMTDC-2018-19new

AMTDC 2018 - 2019

4. Development of Orbital Motion Abrasive Cutting Machine

AMTDC (IIT-Madras) team: S. Akash, R. Srikanth, N. Ramesh Babu

Industry Partner: Chennai Metco Private Limited, Chennai

Project Highlights

Orbital motion abrasive cutting machine is the next generation cutting machine which
provide solution to the problems like long cutting time, high wheel wear, thermal damages in
work-piece, etc. associated with the traditional chop or traverse cutters. The technology of
orbital motion mechanism is developed indigenously and then incorporated in the abrasive
cutting machine to facilitate a very high performance cutting of defect free surfaces at a much
reduced cutting time. Orbital cutting works by combining the best characteristics of chop,

oscillation, and transverse and increment cutters and able to cut samples quickly without
compromising cut quality by minimizing blade contact time with orbital cutting. The in-house
development of orbital mechanism is done by a detailed understanding and simulation of the
kinematics of various mechanisms and thereafter rigorous calculations of area of contact, MRR,
cutting force and power for feasibility of the mechanism. The developed machine is a floor
standing automatic orbital saw cutter that performs cutting at reduced ‘wheel-workpiece area
of contact’ and therefore mitigates burn marks. The contact arc of the wheel can be controlled
dynamically via the feed speed. Unlike the traverse and increment cutter, no special
programming is required as part size varies. The orbital abrasive cutting machine is widely used
for metallurgical sample preparation. This machine, indigenously developed by AMTDC is built
to cater to the needs of various sectors such as, aerospace, defense and nuclear industries. The
price of the developed machine is expected to be 40% lower than imported machines.

Current Status

The first machine developed was exhibited at EEPC IESS 2017 and 2018, both held at
Chennai and the final version was exhibited at just concluded IMTEX 2019, Bangalore. The
project is nearing completion with its final testing and characterization.

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