THREAD CUTTING MECHANISM ON
LATHE MACHINE
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| THREAD CUTTING |
Thread of any pitch, shape and size can be cut on a Preet
lathe using single point cutting tool. Thread cutting is operation of producing
a helical groove on spindle shape such as V, square or power threads on a
cylindrical surface. The job is held in between centers or in a chuck and the
cutting tool is held on tool post.
The cutting tool must travel a distance equal to the pitch
(in mm) as the work piece completes a revolution. The definite relative rotary
and linear motion between job and cutting tool is achieved by locking or
engaging a carriage motion with lead screw and nut mechanism and fixing a gear
ratio between head stock spindle and lead screw. To make or cut threads, the
cutting tool is brought to the start of job and a small depth of cut is given
to cutting tool using cross slide.
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