Note: All dimensions are in mmØ 343.) A 34 mm diameter x 120 mm shafting will be turnedusing a lathe to produce a step shafting as shown in thefigure. Calculate the required (minimum) totalmachining time Tm with the following cuttingØ 3050120conditions:Step ShaftingRough Turn: V = 30 m/min; Max. Depth of Cut = 1.5 mm; Feed = 0.2 mm/revFinish Turn: V = 60 m/min; Max. Depth of Cut = 0.5 mm; Feed = 0.05 mm/revLathe available rpm: 150, 200, 250, 350, 400, 450, 500, 550, 600, 650, 700

Given:- Dinitial=34 mm,Dfinal,Rough=31 mm,Dfinal,Finish=30 mm,L=50 mm,rough turn:-V=30 mmin,depth of…

Note: All dimensions are in mm Ø 34 7. 3.) A 34 mm diameter x 120 mm shafting will be turned using a lathe to produce a step shafting as shown in the figure. Calculate the required (minimum) total machining time Tm with the following cutting conditions: 30 - 70 *-50- 120 Step Shafting Rough Turn: V = 30 m/min; Max. Depth of Cut = 1.5 mm; Feed = 0.2 mm/rev Finish Turn: V = 60 m/min; Max. Depth of Cut = 0.5 mm; Feed = 0.05 mm/rev Lathe available rpm: 150, 200, 250, 350, 400, 450, 500, 550, 600, 650, 700

Note: All dimensions are in mm Ø 34 7. 3.) A 34 mm diameter x 120 mm shafting will be turned using a lathe to produce a step shafting as shown in the figure. Calculate the required (minimum) total machining time Tm with the following cutting conditions: 30 - 70 *-50- 120 Step Shafting Rough Turn: V = 30 m/min; Max. Depth of Cut = 1.5 mm; Feed = 0.2 mm/rev Finish Turn: V = 60 m/min; Max. Depth of Cut = 0.5 mm; Feed = 0.05 mm/rev Lathe available rpm: 150, 200, 250, 350, 400, 450, 500, 550, 600, 650, 700

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter5: Turning

Section5.3: Machining Operations On The Lathe

Problem 5RQ: Calculate spindle RPM and machining time for cutting a 1.5" diameter 4" long at 225 SFPM using a...

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