Calculating the required net power (Pc), which the lathe is required to provide for the current cutting operation is defined by:

Q: Following are the data in an orthogonal cutting operation. Rake angle = 15° Cutting speed = 20 m/min…

A: Let us take, α = Rake angle β = Angle of chip friction φ = Shear plane angle   From the data given,…

Q: (b) During a certain machining experiment at the UCSI workshop, it is observed that temperature at…

A: (i). In a metal cutting process, Maximum heat is carried out by chip then tool and lastly by the…

Q: Calculate resultant force, metal removal rate and shear strain in an orthogonal cutting the depth of…

A:

Q: In orthogonal turning of a bar 100 mm diameter with a feed of 0.25 mm/rev., depth of cut = 4 mm,…

A: (i) The diagram of the orthogonal cutting is given as, In this diagram, the given parameters are…

Q: (b):- Calculate the total time to mill a block of aluminum with dimensions of 100 x 40 x 50 to…

A:

Q: A mild steel rod having 50 mm diameter and 500 mm length is to be turned on a lathe. Determine the…

A:

Q: 1) Give an explanation as to why the maximum temperature in cutting is located near the middle of…

A: Given :-  : the shear plane and the tool-chip interface Friction.

Q: what are the three basic parameters (cutting variables) in the machining process? how to calculate…

A: The 3 basic parameters required in machining are : (a) Cutting velocity (Vc) – It provides the…

Q: 1. A workpiece with 25mm diameter is turned in a centre lathe with a back rake angle of 12 degrees…

A: For solution refer below images.

Q: The rotatory speed of the cutting tool and the feed rate of the workpiece depend upon the type of…

A:

Q: Given that the length of a work-piece made from copper alloy to be face-milled is 250 mm and the…

A: Given : L = 250 mm D = 150 mm z = 10 To find : Cutting speed and feed

Q: In Example 21.3, if the cutting speed V is doubled, will the answer be different? Explain.

A: Solution:

Q: Using the Taylors tool life equation with exponent n = 0.5, if the cutting speed is reduced by 50%…

A: Given Data n=0.5 V2=0.5V1

Q: In a turning operation, the operator has established that a single pass on the cylindrical workpiece…

A: Given data as per questionMachining time (Tm)=5 minLength of piece (L)=400mmdiameter of work piece…

Q: 5. An engine lathe is used to turn a cylindrical work part, cutting speed 2.4 m/s, feed 0.20 mm/rev,…

A:

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

A: Given data as per question Diameter =45 mm Thickness =20 mm Torque required =7Nm speed variation of…

Q: It is required to reduce the thickness of cast iron workpiece with dimensions (L x w x t) of (230 mm…

A:

Q: Find the machining time required to turn a mild steel rod from 65mm to 58 mm over a length of 100 mm…

A: Given data: - The initial diameter of the rod is D = 65 mm. The final diameter of the rod is d = 58…

Q: If a fairing operation is executed at a rotational speed of 40.0 rev / min, the feed is 0.015 in /…

A: As the outer and inner diameter is not given so I am assuming it as D0 and Direspectivelya)…

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: 2 1.46 Explain why the power requirements in cutting depend on the cutting force but not the thrust…

A: The cutting force magnitude is much higher than the thrust force.

Q: In a cutting test with 0.3 mm flank wear as tool failure criterion, a tool life of 10 min was…

A: Taylor's tool life equation is given by F.W. Taylor. Taylor's tool life equation gives the relation…

Q: The workpiece of size o 50 mm x 90 mm length is to be reduced to o 42 mm x 85 mm. If the depth of…

A: We have provided data from the question, Initial diameter= 50 mm; Initial length= 90 mm Final…

Q: 3. Using a lathe machine having a motor power of 4 KW and mechanical efficiency of 0.85, calculate…

A: Given: The power of the motor is, P=4 kW. The mechanical efficiency of the motor is, η=0.85. The…

Q: Assume that, in orthogonal cutting, the rake angle is 20 and the friction angle is 35 at the…

A: Given data  Rake angle, α=20 friction angle for case 1   friction angle for case 2

Q: In a turning operation, the tool life varies with cutting speed, as shown in following table:…

A: Turning operation is the manufacturing technique that is done on a lathe machine. In this operation,…

Q: Exercises 4 1. A 30 mm diameter mild steel bar is being turned at a spindle speed of 8 rev/s, on a…

A:

Q: QUESTION 1 Calculate the spindie speed in RPM of a lathe turning a 96 milimeter diameter material…

A:

Q: 22.29 Describe the necessary conditions for optimal utilization of the capabilities of diamond and…

A:

Q: Q) An engine lathe is used to turn a cylindrical work part 150 mm in diameter by 500 mm long.…

A: GIVEN: D=150mm L=500mm F=0.3mm/rev d=3mm Cutting speed, V=2.5m/s=2500X60=150000mm/min   a) CUTTTING…

Q: 3. It is required to machine a slot with length 100 mm, width 15 mm, and depth 4 mm. Calculate the…

A: Given: The length of machine slot, L = 100 mm The width of machine slot, b = 15 mm The depth of…

Q: A 125mm-diameter work-bar, 1200mm long is held between centers of an engine lathe. A 400mm portion…

A:

Q: A hole of 40 mm diameter and 50 mm depth is to be drilled in a milled steel component. The cutting…

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Q: An orthogonal cutting operations is being carried out in which uncut thickness is 0.010 mm, cutting…

A: Given:- α=15°FT=25 NFc=60 NChip thickness=0.015mmUncut thickness=0.010Width=6 mm To find:- The ratio…

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: Calculate the r/min required for finish turning a 2in diameter piece of machine steel (The cutting…

A: Given :-     Dia of piece, D=2 inch          Cutting speed, V=100 inch/min

Q: A turning operation is carried out on aluminum. Based on the specific energy values in Table 17.2,…

A:

Q: What is the cutting ratio? Is it always less than 1?explain

A: Cutting ratio (r): Cutting ratio is defined as the ratio of thickness of metal before cutting that…

Q: b):- Calculate the total time to mill a block of aluminum with dimensions of 100 x 40 x 50 to remove…

A:

Q: b) A mild steel having length of 350mm and diameter of 12.5 cm, is being reduced to diameter 9.5 cm,…

A:

Q: The cutting speed in in/min of a 12 mm drill  operating at 600 rpm is nearly equal to

A: The cutting speed is 890.5 in/min.

Q: A slab milling operation is performed on the top surface of a tool-steel workpiece 450 mm long by…

A:

Q: Problem 10.21 Estimate the time required for one complete cut on a workpiece of length 350 mm and…

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Q: An orthogonal cutting operation is being carried out under the following conditions: depth of cut,…

A:

Q: Q1_Tuming operation carried out on Aluminum shaft with specific energy of 0.7 N.m/mm. Cutting speed…

A: As per our guidelines we are supposed to do only first question, if more than one question asked,…

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.