DESIGN AND FABRICATION OF GRINDING
ATTACHMENT FOR LATHE MACHINE TOOL



ABSTRACT
Grinding operation is performed to obtain a fine surface finish after performing turning operation on lathe
machine for cylindrical jobs. This is done to obtain required dimensions of part to be used in any assembly.
Thus to perform these two operations on same machine the attachment is designed. To verify the design the
attachment is fabricated.
This work describes an attempt to decrease the time in loading and unloading of workpeice with desired surface
finish. The report describes the selection of wheel for grinding. It also considers the rigidity of design, damping
of vibration due to motor speed and stress analysis of critical part of design, which is analyzed on INVENTOR
software and compared with theoretical calculations. It also lists the various operations performed to fabricate
the attachment. The results are obtained in form of tolerance limits which are compared with results of
individual grinding machine operation on different machine and the conclusion are stated.
INTRODUCTION
Lathe has always been the mother of all machines before the invention of CNC machines. The turning operation
on lathe is most frequently performed, and then it’s transferred to grinding machine for fine surface finish. The
time required to do this is generally high and loading and unloading of job causes human fautige. Thus
combining these two operations on single machine would benefit and this led to think of grinding on lathe
machine. The grinding operation is done using abrasive wheel, grinder which provides fine surface finish. The
grinding wheel differs for different materials to be grinded which is made up of abrasives, bond, grit, grade and
structure [1]. In this paper we have selected the required grinding wheel depending on workpeice to be used.
The main aim of project is to obtain an accuracy of 20microns. Since grinding requires high surface finish thus
proper motor speed is selected as required [2]. Since the motor will run at high rpm lot of vibrations will be
generated, thus it will be necessary to damp these vibrations using damper [8].Additional to it appropriate
rigidity should be provided to clamp the motor on lathe bed.



more reference;
http://ijstmimages/short_pdf/1429297170_P62-67.pdf
https://scribddoc/47237297/CONTOUR-ATTACHMENT-FOR-LATHE
http://slideshare8750119492/gear-cutting-attachment-in-lathe-machine