In a production operation, a high-speed steel face cutting tool with 8 cutting edges is used for the face milling of a rectangular workpiece with dimensions of 650 mm length x 120 mm width x 100mm thickness and 4 J/mm3 specific energy of cutting. The cutting tool has a diameter of 60 mm and is cutting with a rotational speed of 500 RPM and a chip load of 0.1 mm/tooth. If the part thickness is to be reduced to 95 mm using a 5 mm depth of cut and a width of cut of 40 mm, then find the following; a) The total time (min) to machine the workpiece b) Material removal rate during the cut c) The power (kw) consumed while the tool is engaged in cutting of the workpiece d) The Cutting force Fe

In a production operation, a high-speed steel face cutting tool with 8 cutting edges is used for the face milling of a rectangular workpiece with dimensions of 650 mm length x 120 mm width x 100mm thickness and 4 J/mm3 specific energy of cutting. The cutting tool has a diameter of 60 mm and is cutting with a rotational speed of 500 RPM and a chip load of 0.1 mm/tooth. If the part thickness is to be reduced to 95 mm using a 5 mm depth of cut and a width of cut of 40 mm, then find the following; a) The total time (min) to machine the workpiece b) Material removal rate during the cut c) The power (kw) consumed while the tool is engaged in cutting of the workpiece d) The Cutting force Fe

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A motorised metal guillotine machine is required to cut 45 mm diameter hole in a plate of 20 mm thickness at rate of 35 holes per minute. It requires a torque of 7 Nm for an area of hole in mm?. If the cutting takes 1/10 of a second and the speed of its flywheel varies from 165 rpm to 145 rpm, calculate: 4.3. Maximum fluctuation of energy of the flywheel. 4.4. Mass of the flywheel having radius of gyration of 1.5 m.
A motorised metal guillotine machine is required to cut 45 mm diameter hole in a plate of 20 mm thickness at rate of 35 holes per minute. It requires a torque of 7 Nm for an area of hole in mm?. If the cutting takes 1/10 of a second and the speed of its flywheel varies from 165 rpm to 145 rpm, calculate: 4.1. Energy required to cut a hole. 4.2. Energy required for cutting work per second.
A motorised metal guillotine machine is required to cut 45 mm diameter hole ina plate of 20 mm thickness at rate of 35 holes per minute. It requires a torqueof 7 Nm for an area of hole in mm?. If the cutting takes 1/10 of a second andthe speed of its flywheel varies from 165 rpm to 145 rpm, calculate:1.Energy required to cut a hole.2.Energy required for cutting work per second.3.Maximum fluctuation of energy of the flywheel.4.Mass of the flywheel having radius of gyration of 1.5 m.
An Aluminium workpiece of 175 mm length is machined in a lathe, where the plain tuming openatnin done with th spend steel single point cutting tool. The diameter of the workpece got reduced by 5 mm durng thin operation As per the wng the required machining lengthis 103 mm and the final diameter is 16 mm, The lathe was set to operate at a spede speed u 2550 rpm and the camage was set to move with an aal speed of 415 mm/min auaomatically. he aut pownt is timated to & Ws/ mm Calculate: (a). Cutting speed (b). Depth of cut (d. Material Removal Rate (d). Cutting time (e). Net power required
The end of a large tubular workpart is to be faced on a NC vertical boring mill. The part has an outside diameter of 38.0 in and an inside diameter of 24.0 in. If the facing operation is performed at a rotational speed of 40.0 rev/min, feed of 0.015 in/rev, and depth of cut of 0.180 in, determine (a) the cutting time to complete the facing operation and the cutting speeds and metal removal rates at the beginning and end of the cut.
Q1. Calculate the time required to machine a workpiece 170 mm long, 60 mm diameter to 165 mm long 50 mm diameter. The workpiece rotates at 440 rpm, feed is 0.3 mm/rev and maximum depth of cut is 2 mm. Assume total approach and overtravel distance as 5 mm for turning operation. Answer Q2. A gray cast iron surface 280 wide and 540mm long may be machined either on a vertical milling machine, using a 100mm - diameter face mill having eight inserted HSS teeth, or on a horizontal milling machine using an HSS slab mill with eight teeth on a 200-mm. diameter. Which machine has the faster cutting time? The values of feed per tooth and cutting speed for both processes are 0.4mm/tooth and 80m/min, respectively. The depth of cut = 3.0 mm and assume A and O equal to 5. Answer
A motorised metal guillotine machine is required to cut 45 mm diameter hole in a plate of 20 mm thickness at rate of 35 holes per minute. It requires a torque of 7 Nm for an area of hole in mm2. If the cutting takes 1/10 of a second and the speed of its flywheel varies from 165 rpm to 145 rpm, calculate: 4.1. Energy required to cut a hole. 4.2. Energy required for cutting work per second. 43. Maximum fluctuation of energy of the flywheel. 4.4. Mass of the flywheel having radius of gyration of 1.5 m.
Using 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.
HW3: 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:
Turning Operation In a production turning operation, the foreman has decreed that a single pass must be completed on the cylindrical workpiece in 4.8 min. The piece is 400 mm long and 150 mm in diameter. Using a feed = 0.43 mm/rev and a depth of cut = 4.0 mm, what cutting speed must be used to meet this machining time requirement? Hint: Re-arrange the Tm equation to find v in m/min Tm= T.DO.L v.f 1.522
A slab-milling operation is carried out on a 200 mm long, 80-mm-wide annealed mild-steel workpiece having a feedrate of 0.1 mm/tooth and a depth of cut of 4.0 mm. The cutter of 50 mm diameter has 18 straight teeth and rotates at 135 rpm. The given specific energy for this material is 3.5 W s/mm3 and the slab mill is wider than the workpiece to be machined. Calculate:‧ the material-removal rate;‧ the power and torque required for this operation;‧ the cutting time. (243 mm/min, 77760 mm3/min, 4.5 kW, 52.8 s)
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 5