Lathe

Parting or grooving operation in lathe

A single point cutting tool is characterized by the presence of only one active cutting edge in the tool body that participates in material removal action during machining. Turning tool, boring tool, parting tool, shaping tool, planing tool and fly cutting tool are examples of single point cutters. In contrary, a multi-point cutting tool contains several active cutting edges that simultaneously take part in machining. For example, milling cutter, reaming

Relation between cutting velocity and spindle speed in straight turning

Question: Carbide tool is used to machine a 30mm diameter steel shaft at a spindle speed of 1000 revolutions per minute. What is the cutting velocity of the above turning operation? Solution: In straight turning operation, the cylindrical workpiece is rotated at a fixed spindle speed (measured in rpm or revolution per minute); while, the single point turning tool is fed in longitudinal direction at a pre-defined feed rate (measured