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© rkm2003Example Given T1 = 16 minute, v1 = 100m/minute, v2 = 57 m/minute, D =200mm, l = 300 mm, f = 0.5 mm/rev Consider Speed of 100 m/minute N1 = (1000 × v) / (π × D) =(1000×100) / (π×200) = 159.2 rpm t1 = l / (f×N) = 3000 / (0.5 ×159.2) =37.7 minute Tool life corresponding to speed of 100m/minute is 16 minute. Number of resharpening required = 37.7 /16 = 2.35
ExampleTotal cost = Machining cost + Cost ofresharpening × Number ofresharpening = 37.7×60×1+ 20×2= Rs.2302© rkm2003
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Turning OperationsChapter 5L a t h
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Some Typical Lathe JobsTurning/Dril
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The LatheHead StockTail StockBed©
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Size of LatheWorkpiece LengthSwing
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Workholding DevicesEquipment used t
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Workholding Devices ..Headstock cen
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© rkm2003DogsTailTailWorkholding D
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Workholding Devices ..© rkm2003Res
Page 17 and 18: Operating ConditionsTool postChipWo
Page 19 and 20: Operating Conditions..© rkm2003Fee
Page 21 and 22: 3 Operating ConditionsCutting speed
Page 23 and 24: Operations on Lathe ..Material Remo
Page 25 and 26: Operations on Lathe ..Operations on
Page 27 and 28: Operations on Lathe ..© rkm2003Cut
Page 29 and 30: Operations on Lathe ..© rkm2003Fac
Page 31 and 32: © rkm2003Facing ..Operations on La
Page 33 and 34: Operations on Lathe ..KnurlingProdu
Page 35 and 36: © rkm2003Knurling ..Operations on
Page 37 and 38: Operations on Lathe ..Grooving ..Sh
Page 39 and 40: Operations on Lathe ..© rkm2003Par
Page 41 and 42: Operations on Lathe ..ChamferingBev
Page 43 and 44: Operations on Lathe ..Taper Turning
Page 45 and 46: Operations on Lathe ..© rkm2003Tap
Page 47 and 48: Operations on Lathe ..Process Seque
Page 49 and 50: Operations on Lathe ..© rkm2003Mac
Page 51 and 52: ExampleA mild steel rod having 50 m
Page 53 and 54: ExampleCan a machine has speed of19
Page 55 and 56: Example Given data: D1 = 80 mm, D2
Page 57 and 58: Example Given data: Lj = 150 mm, D1
Page 59 and 60: Example© rkm2003 Calculate the tim
Page 61 and 62: © rkm2003Example Time for Turning:
Page 63 and 64: Example Total time:Total time for m
Page 65 and 66: Example Given D =10 mm , N = 1000 r
Page 67: © rkm2003Example 6: While turning
Page 71 and 72: ExampleWrite the process sequence t
Page 73 and 74: Example© rkm2003 To write the proc
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Lathe

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