Thread cutting requires axial advance of 0.8 mm for every spindle revolution. Required feed is $1500(0.8)=1200$ mm/min. The lead screw advances the carriage 1.5 mm per revolution, so its speed is $1200/1.5=800$ rpm.
More Mechanics of machining questions
GATE 2026 ME Q63– During orthogonal turning by using a single point cutting tool, feed rate is 0.24 mm/rev.…
GATE 2023 ME Q44– In an ideal orthogonal cutting experiment (see figure), the cutting speed V is 1 m/s, the…
GATE 2022 ME (ME1) Q54– Under orthogonal cutting condition, a turning operation is carried out on a metallic…
GATE 2022 ME (ME1) Q55– A 1 mm thick cylindrical tube, 100 mm in diameter, is orthogonally turned such that the…
GATE 2022 ME (ME2) Q54– A straight-teeth horizontal slab milling cutter is shown in the figure. It has 4 teeth and…
GATE 2022 ME (ME2) Q55– In an orthogonal machining operation, the cutting and thrust forces are equal in…