Drilling is a cutting process. The method is used to cut a hole of circular cross-section in solid materials. Drilling may affect the mechanical properties of the workpiece as it creates low residual stresses around the hole opening and a very thin layer of highly stressed and disturbed material on the newly formed surface. Use this online lathe drilling time calculator to calculate for the drilling time of a material.
Given that, depth = 20, feed = 3 and revolution = 5. Calculate lathe drilling time.
Lathe Drilling Time (t) = 20/(3 x 5)