14-10-2010, 11:40 AM
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This article is presented by:
VIDYANAND PANDIT
The Lathe Machine
History
Lathe forerunner of all machine tools
First application was potter's wheel
Rotated clay and enabled it to be formed into cylindrical shape
Very versatile
Used for turning, tapering, form turning, screw cutting, facing, drilling, boring, spinning, grinding and polishing operations
Types of Lathes
Engine lathe
Not production lathe, found in school shops, toolrooms, and job shops
Primarily for single piece or short runs
Manually operated
Special Types of Lathes
Turret lathe
Used when many duplicate parts required
Equipped with multisided toolpost (turret) to which several different cutting tools mounted
Employed in given sequence
Special Types of Lathes
Single- and multiple-spindle automatic lathes
Six or eight different operations may be performed on many parts at the same time
Will produce parts for as long as required
Tracer lathes
Used where a few duplicate parts required
Hydraulically operated cross-slide controlled by stylus bearing against round or flat template
