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Ph.D.
(Engineering & Technology)
DEVELOPMENT AND EXPERIMENTATION OF ROTARY ASSISTED
HOT ABRASIVE JET MACHINING PROCESS

Ph.D. Scholar : Chaudhari Pradipkumar Sangrambhai
Research Supervisor : Dr. Dhaval M. Patel

Regi. No.: 14146051005
Abstract :
Hard materials are difficult to machines using typical machining methods, necessitating
the use of non-traditional methods. Over a time, many non-traditional machining methods
have been developed and abrasive jet machining is one of them. Abrasive jet machining is
a versatile machining technique that can handle a wide range of hard and brittle
materials. Small cutting pressures, no thermal distortion, minimal strains on the work
piece, high flexibility and versatility distinguish it from other non-traditional cutting
technologies. Due to the virtue of the AJM process, it is one of the important techniques
of advanced manufacturing processes.

According to the literature review conducted, it has been found that very few researchers
have attempted research studies on AJM. Hence, the proposed research work is
concerned with modification on AJM with unique features. In the present work, the first
version of the AJM machine developed (Experimental setup - 1) with rotary assisted
mechanism was for proper mixing of air and abrasive particles. The Second version of
AJM machine developed (Experimental setup - 2) with the heating jacket on the hopper to
heat the abrasive particles to identify the effect of temperature on response parameters.
The third version of AJM machine was developed (Experimental setup - 3) with the
provision of a mass flow control unit along with the rotary-assisted mixing chamber and
hopper with a thermal jacket. Experimental work has been performed on all three
versions of AJM machines and tried to improve the results in terms of optimal
parameters. Final experimental work has been performed in the third version of the AJM
machine and identified the effect of process parameters on response parameters as well
as optimum parameters were identified. Many researchers have studied and reported
about optimal parameters obtained through experimental work conducted on traditional
AJM for different materials. But the traditional AJM does not have rotary assistance and
provision for heating the abrasives.

For the present work, glass is chosen as a workpiece material which is machined on
modified-AJM with the provision of rotary assistance and heating of abrasive using rotary
type mixing chamber and hooper with thermal jacket respectively as well as with
automated work table. The experimental setup prepared and selected the input

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