All Geared Lathe Machine

All Geared Lathe Machine
All Geared Lathe Machine

Sunday 7 July 2019

THREAD CUTTING ON LATHE

THREAD CUTTING MECHANISM ON 

LATHE MACHINE


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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