Question: In plain turning of a brass rod at a feed of 0.4 mm/rev, what will be the theoretical maximum surface roughness, if (i) the tool is relatively sharp with principal and auxiliary cutting edge angles of 90° and 20°, and (ii) the tool has a considerable nose radius of r = 1.0 mm. [Machining and Machine Tools by A. B. Chattopadhyay] This question is related to the calculation of
Straight turning operation is carried out to reduce the diameter of a cylindrical workpiece. It is carried out in lathe with the help of a single point turning tool. The tool and workpiece are mounted firmly on the machine. The workpiece is rotated at certain speed about the machine longitudinal axis (spindle axis). The tool is also fed parallel to the machine longitudinal axis after giving the depth of cut.
Question: During plain turning a brass rod by a turning tool whose principal cutting edge angle is 90° and auxiliary cutting edge angle 20°, the maximum surface roughness has been found to be 0.20 mm. At how much feed rate of the tool, the turning was carried out? [Machining and Machine Tools by A. B. Chattopadhyay] The lay marks that are generated owing to the continuous feed of the cutting
Question: While turning a brass rod by a sharp cutting tool in a given condition, how much (in percentage) change will occur in surface roughness if only the depth of cut is changed from 2.0 mm to 2.5 mm. [Machining and Machine Tools by A. B. Chattopadhyay] Conventional machining processes inherently generate lay marks owing to the continuous feed of the tool. This feed marks primarily determine the theoretical surface
