A turning operation is performed on C1008 steel (a ductile steel) using a tool with a nose radius= 1.3 mm. Cutting speed = 61 m/min and feed = 0.27 mm/rev. Compute an estimate of the surface roughness in this operation. (Hint: the ratio of actual to ideal roughness can be read on the figure below) Equations used; Ra Ri = - Actual Ratio = Theoretical ƒ² 32NR rai Ri 2.4 2.2 2.0 1.8 1.6 14- 1.2 1.00 0 Ductile metals Cast irons Free machining alloysi 100 30.5 200 Cutting speed-ft/min 61 300 91.5 Cutting speed- m/min. I 400 122

Q: A pre-drilled hole of 010 mm in a block of 40 mm thick is required to be enlarged to O 16mm by core…

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Q: a production turning operation, the workpart is 60 mm in diameter and 500 mm long. A feed of 0.75…

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Q: A turning operation is performed using a rake angle of 15degree. Cutting conditions are, feed= 0.30…

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Q: A 4"x 8" cast steel plate is to be machined using a milling cutter with 8 inserts. The operation is…

A: Given dataD=8inchV=350sfpm=350×39.37=inch/minf=0.015inch/totthl3=0.18inchz=8 ***as per our company…

Q: An aluminum hollow shaft 200 mm outside diameter, 100 mm inside diameter and 500 mm length from…

A: Givenoutside dia=200mminside dia=100mmL=500MMN=400rpmfeed rate=0.25mm/rev

Q: in shaft turning Steel raw material, diameter 40 mm., length 200 mm. to obtain a lathe workpiece…

A: Given, D1 = 40 mm L1 = 200 mm D2 = 35 mm L2 = 150 mm Cutting Speed, S = 25 m/min feed rate, f = 0.2…

Q: cutting at V = 30 m/min, f 0.3 mm of cut are increased together by 20

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Q: A pre-drilled hole of $10 mm in a block of 40 mm thick is required to be enlarged to 0 16mm by core…

A: we are supposed to answer only 3 sub parts..please post other parts as the other question. Given =…

Q: Q4_ Low carbon steel having tensile strength of 300 MPa and shear strength of 220 MPa is cut in…

A: Givenσh=300Mpaσshear=220MpaV=3m/sf=0.2mm/revd=3mmα=5°r=0.45

Q: ф20 O 25 $10 25 10 45

A: Machining time is given by, T=LfNwhere, L=length of operationf= feed in mm/revN=rpmGiven:V=60…

Q: 4) The workpiece material is copper alloy. Assume that D=220 mm, w = 40 mm, 1= 550 mm, d=2 mm, v=1…

A: Given Data The diameter is:D=220 mm The width of cut is:w=40 mm The length of the cut is:l=550 mm…

Q: The surface finish specification in a turning job is 0.90 um. The work material is cast iron. The…

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Q: The face milling cutter of D = 200 mm used to cut a block which is 200 mm = H, 1=480 mm, if f- 0.7…

A: Machine time is the ratio of length divided by cutting speed. Here,  Length = length of block +…

Q: In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool. the…

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Q: Problem1. In orthogonal tuming of a 50mm dia. mild steel bar on a lathe, the following data were…

A: Given data: The rake angle, α = 15o. The cutting speed, Vc = 100 m/min. The feed rate, f = 0.2…

Q: A 12" x 4" block of soft aluminum alloy (u, = 2.5 hp.min/in³) is face milled at a depth of cut of…

A: Given Data: Depth of cut DC=18inch Length of block l=12 in Breadth of block b=4 in ut of aluminium…

Q: A mild steel specimen of Initial diameter of 53.5 mm is turned to final diameter of 47 mm for an…

A: for solution refer below images.

Q: A motorised metal guillotine machine is required to cut 45 mm diameter hole in a plate of 20 mm…

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Q: A slab milling operation is performed to finish the top surface of a steel workpiece 250*75 mm*mm.…

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Q: A slab-milling operation is being carried out on a block on a 200 mm-long, 150 mm-wide annealed mild…

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Q: (j) In a turning operation on stainless steel with hardness = 200 HB, the cutting speed = 250 m/min,…

A: Given data : stainless steel with hardness = 200 HB cutting speed (v) = 250 m/min feed (f) = 0.3…

Q: The outline of the part in the Figure below is to be profile milled using a 20- mm diameter end mill…

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Q: 5. AT-slot is to be cut in a C.I. slab 260 mm long as shown make the T-slot if the cutting speed is…

A: Given    Cutting speed, v = 25 m/min            Diameter, d = 20 mm Number of teeth, z = 6 Find…

Q: Machining time required reduce a mild steel rod of diameter 60mm, initial length (L) 125mm to final…

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Q: An orthogonal cutting operation is being carried out under the following conditions: t0=0.38 mm,…

A: Given, Uncut chip thickness = t0 = 0.38 mm Chip thickness = t = 0.65 mm Width of the cut = b = 2.5…

Q: A cemented carbide tool is used to turn a part with length = 18.0 in and diameter = 3.0 in. The…

A: Answer: 1. Cutting speed for maximum production rate: 822.26 ft/min. 2. Tool life in min of cutting:…

Q: n a turning operation, cutting speed =200 m/min; feed = 0.25mm mm/rev, and depth of cut = 4.00mm…

A: To Find : The specific energy for the work material in this operation.Given: The cutting speed is…

Q: The following data was obtained from an orthogonal cutting test. Rake angle = 20° Depth of cut = 6…

A: Given Data: Rake angle α=20° Depth of cut d=6 mm  Feed rate f=0.25mmrev Cutting speed VC=0.6ms Chip…

Q: (a)Find number of passes to finish the entire turning operation (b) Total time required to complete…

A: for solution refer below images.

Q: the rod to 16 mm and also facing operation on both sides is done. Assume cutting speed is 30 m/min…

A: Given, L = 120 mm d = 35 mm V = 30 m/min f = 0.7 mm/rev

Q: A slab milling operation is performed on the top surface of a steel rectangular workpiece 12.0 in…

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Q: In an orthogonal cutting test with a bar of 75 mm diameter is reduced to 73 mm by using a HSS tool…

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Machining Processes and Machine Tools

Machining is represented as the process in which an excessive amount of substance is eliminated from the particular element in the form of pieces. In machining, cutting tools such as rotary tools, lathe, drill press, grinder, chop saw, welders, and many more are applied to get the desired shape. As compared to other manufacturing processes, machining is precise and versatile.