Calculation formula of turning |
¡ô.Power required(Ne) |
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(Example) Machine soft steel under cutting condition that cutting depth of 3mm, cutting speed of 120m/min, feed of 0.2mm/rev, calculate the required power.(Coefficient of machine tool efficiency is 80%)(Answer) According to the table below, integrate the cutting force of cutting soft steel Ks=3100N/mm2 in the formula, to get |
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¡ñ. Ks value |
Material of work-piece | Tensile strength or hardness | Specific cutting force of various feed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.1(mm/rev) | 0.2(mm/rev) |
0.3(mm/rev) |
0.4(mm/rev) |
0.5(mm/rev) |
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¡ô. Cutting speed(VC) | ¡ô. Feed(f) |
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¡ô. Cutting time(Tc) |
¡ô.Theoretical surface finish(h) |
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