Slide 1

PRESENTATION ON LATHE MACHINEBy: MOHD. MUFEED.School Of Mechanical Engineering

Theory Of Lathe Machine::A lathe is one of the oldest and perhaps most important machine tools ever developed. The job to be machined is rotated and the cutting tool is moved relative to the job. That is why; the lathes are also called as Turning machine. A lathe was basically developed to machine cylindrical surface. But many other operations can also be performed on lathe, for example, facing, parting, necking, knurling, taper turning, thread cutting and forming etc. A lathe is called The father of the entire machine tool family.

Turning ..This operation is one of the most basicmachiningprocesses. That is, the part is rotated while a single point cutting tool is moved parallel to the axis of rotation.[1]Turning can be done on the external surface of the part as well as internally (boring). The starting material is generally a workpiece generated by other processes such ascasting,forging,extrusion, ordrawing.

Figure; Turning

Facing ..Facingin the context of turning work involves moving the cutting tool at right angles to the axis of rotation of the rotating workpiece.[1]This can be performed by the operation of the cross-slide, if one is fitted, as distinct from the longitudinal feed (turning). It is frequently the first operation performed in the production of the workpiece, and often the lasthence the phrase "ending up".

Figure; Facing

Knurling ..

Figure; KnurlingThe cutting of a serrated pattern onto the surface of a part to use as a hand grip using a special purpose knurling tool

REFERENCE.

Specially Thanks Mr. Akhileshwar Nirala sir!&Thanks All Of You for watching this!