A lathe is to be designed for machining aluminium work pieces of up to 500 mm diameter and mild steel workpieces of up to 300 mm diameter. Both HSS and cemented carbide tools are used. Determine the diameter of the smallest workpiece which may be machined on this lathe if the permissible cutting speed of the HSS-mild steel pair = 50 m/min, that of the carbide-aluminium pair = 1500 m/min and R, = 75. %3D

A lathe is to be designed for machining aluminium work pieces of up to 500 mm diameter and mild steel workpieces of up to 300 mm diameter. Both HSS and cemented carbide tools are used. Determine the diameter of the smallest workpiece which may be machined on this lathe if the permissible cutting speed of the HSS-mild steel pair = 50 m/min, that of the carbide-aluminium pair = 1500 m/min and R, = 75. %3D

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Concept explainers

Machining Processes and Machine Tools

Machining is represented as the process in which an excessive amount of substance is eliminated from the particular element in the form of pieces. In machining, cutting tools such as rotary tools, lathe, drill press, grinder, chop saw, welders, and many more are applied to get the desired shape. As compared to other manufacturing processes, machining is precise and versatile.

Question

A lathe is to be designed for machining aluminium work pieces of up to 500 mm diameter and mild
steel workpieces of up to 300 mm diameter. Both HSS and cemented carbide tools are used. Determine
the diameter of the smallest workpiece which may be machined on this lathe if the permissible cutting
speed of the HSS-mild steel pair 50 m/min, that of the carbide-aluminium pair = 1500 m/min and
R, = 75.

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