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For a slab milling operation using a s-in.-diameter, 11-tooth cutter (see EjguE.g_2L6), the feed per tooth is 0.005 in./tooth with a cutting speed of 100 sfpm (HSS steel). Calculate the rpm of the cutter and the feed rate
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- pls solvearrow_forwardHW3: A block of steel has a length I. = 600 mm and a width w = 450 mm, The thickness is Machined 10 mm, once by Peripheral Milling and once by Planing Machine. Calculate Machining time for each operation if you know the following: 1. For peripheral milling: cutting speed V = 80 m/min, Feed f 0.15 mm/rev, the cutter diameter D- 50 mm with five teeth and depth of cut d- 3 mm. 2. For Planing: clearance on both sides e = 25 mm, cutting speed V = 36.56 m'min, return to cutting ratio m - 0.25, feed f- 5 mm'stroke and depth of cut d- 5 mm. 3. Calculate Material removal rate in both Processes. Solution:arrow_forwardsolvearrow_forward
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- In a slab milling operation , L_w = 200 mm table feed = 18 mm/min, diameter of cutter = 34 mm depth of cut = 2 mm. Considering approach and overtravel to be same. The milling time in min will be?arrow_forwardIt takes only 12 seconds to mill 0.5" x 5.5" keyway by means of a 40-tooth cutter at a feed rate of 0.249 mm/tooth. Compute the required speed of the cutter in rpm. 70 O65 O 60 75 Aarrow_forwardUsing slot milling with a cutting tool surface width of 36mm was performed from the top surface to cut a workpiece of 85 x 42 x 8 cm into two equal parts. The milling cutter is 180 mm in diameter and has eight teeth. Cutting speed = 60 m/min, chip load = 0.35 mm/ tooth, and depth of cut = 2 mm, given that the setup and machine settings provide an approach distance of 7mm before actual cutting begins and an overtravel distance of 20 mm after actual cutting has finished, and the return time is a 4-second for idle pass stroke. Determine:- 1. What is the total machining time required for the entire workpiece? 2. The maximum metal removal rate during cutting.arrow_forward
- Expert Q&A Done The top surface of a rectangular workpart is machined using a peripheral milling operation. The workpart is 735 mm long by 50 mm wide by 95 mm thick. The milling cutter, which is 60 mm in diameter and has five teeth, overhangs the width of the part equally on both sides. Cutting speed = 80 m/min, chip load = 0.30 mm/tooth, and depth of cut = 7.5 mm. (a) Determine the time required to make one pass across the surface, given that the setup and machine settings provide an approach distance of 5 mm before actual cutting begins and an overtravel distance of 25 mm after 1.2 9. 20 65 73 actual cutting has finished v in seconds. (b) What is the maximum material 3.9 239 removal rate during the cut v in mm3/sec? 0.127 5arrow_forwardNote: All dimensions are in mm Ø 34 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 30 -70- 50 120 conditions: 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, 700arrow_forwardA turning operation is performed on a cylindrical work part whose diameter = 150 mm and length = 500 mm. Cutting speed = 3.0 m/s, feed = 0.3 mm/rev, and depth of cut = 2 mm. Determine: a. the cutting time and, b. the material removal rate. Equations used Tm= TD.L fvarrow_forward
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