20 mm through hole is to be drilled in a 30 mm thick plate using a double fluted, 120° lip angle drill The drill tip is at a distance of 3 mm from the plate surface when cutting is started and an over travel of 2 mm is recommended as a margin to ensure drilling through the full thickness of the plate. If the drill rotates at 500 rev/min and the feed per tooth is 0.01 mm,find the machining time of the op

Q: The drilling time (in minute) is

A: Given, Diameter,d= 20 mmThickness,t= 40 mm N= 400 rpmFeed rate,f= 0.1 mm/revDetermine the drilling…

Q: 8. A hole of 20 mm diameter is to be drilled in a steel block of 40 mm thickness. The drilling is…

A: Solution:-Given thickness of steel block=40 mmapproach and over run together=d2=10 mmrotational…

Q: Sample Problem 1 A man create a 5 inches thick hole with a 2" diameter on an aluminum flat bar.…

A:

Q: An Aluminium workpiece of 175 mm length is machined in a lathe, where the plain tuming openatinin…

A: Dear student,                    According to the guidelines I am allowed to answer only three…

Q: A hole is being drilled on a block aluminum alloy with 10mm drill at a feed of 0.25 mm/rev . The…

A: Given data:

Q: The time taken to drill a hole through a 30mm thick plate with the drill rotating at 200 rpm and…

A:

Q: Through hole of 12 mm diameter is to be drilled in a steel plate of 20 mm thickness, drilled spindle…

A: Given: The diameter of hole is d=12 mm. The thickness of steel plate is t=20 mm. The drilled…

Q: A vertical boring mill is used to bore the inside diameter of a large batch of tube-shaped parts.…

A: Given, Bore diameter = D = 28 in Length of the bore = L = 14 in Current cutting speed = v = 200…

Q: A cutting tool has a nose radius of 1.8mm find the feed rate for a theoretical surface roughness of…

A: Concept: Surface roughness is measured by center line average. (CLA)  CLA = (fxf) / (8 x R)  Where f…

Q: A 12" through hole is to be drilled in a 1 inch thick steel plate. A standard twist drill having a…

A:

Q: is speed important in a drilling operation ? What are the results of a drill bit with unequal lips ?…

A:

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

A:

Q: Calculate the machining time to complete the job as shown below from a bar 120 mm long and 60 mm…

A: Given: length of the job→L=120 mm initial diameter→D=60 mm  maximum depth of cut→d=5 mm hence in…

Q: ne time for producing a hole will be

A: Given, through holes (d)= 10mmthickness of steel plate(t)= 20mm               α=1202=600Break…

Q: Example 2 Calculate the r/min at which a drill press should be set to make threading for M12 x 1.75…

A: Given-  material - cast iron M12 x 1.75   Diameter of workpiece (D)= 12 mm Feed = Pitch of Thread =…

Q: Blind hole 20 mm diameter, 60 mm deep are being drilled in steel stock, drilling spindle speed is…

A:

Q: A through hole is drilled in an aluminum alloy plate of 15 mm thickness with a drill bit of diameter…

A:

Q: B/ A rectangular aluminum block is drilled at a depth of 40 mm using a drill that has two cutting…

A:

Q: Calculate the ranges of typical machining times for face milling a 250-mm-long workpiece with a…

A: solution to first three sub-parts as per our company policy:

Q: ample: calculate the

A: given:

Q: or a turning operation, the cutting speed is 2.5 m/sec, and the depth of cut is 3 mm. A thrust force…

A: the cutting speed, v = 2.5 m/sthe depth of cut, d = 3 mm = 0.003 mThe thrust force, Ft = 300 Nthe…

Q: As the cutting speed for mild steel is 100ft/min and RPM is 1000, find the diameter of the cutting…

A: Given data as per question cutting speed = 100 ft/min Speed =1000 Feed rate =0.002 in v=100…

Q: What are the Bench Drill Press OBJECTIVES/PURPOSE

A: A bench drill press is a machine tool used to produce holes in a work piece. The tool used is called…

Q: A 0.4-inch diameter bit is used in a vertical or vertical drill that operates at 300 rpm. If the…

A:

Q: Identify and explain the method of milling process in which the stresses on the teeth is maximum at…

A: The milling process in which the stress on the teeth is maximum at the end of the cut is the up…

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

A:

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: Design a jig to drill 8 holes of 10 mm diameter in a PCD of 240 mm circular plate of 300 mm outer…

A: Write the given data. Number of holes, N=8dia of hole, dh=10 mmDp=300 mmt=20 mm

Q: Drilling, diameter = 0.375 inches, feed is 0.003 inches/tooth, number of teeth is 2, rotation speed…

A: Given-To Find-Material Removal Rate (MRR)Power at the MotorPower at the ToolTorque at the Tool

Q: A mild steel block is being drilled with a drill of 10 mm diameters. Given Helix angle = 30° Feed =…

A:

Q: Determine the metal removal rate of a drilling process using 25 mm diameter twist drill, a cutting…

A:

Q: The time taken to drill a hole

A: Given; Feed rate of a drill is;   f= 0.25 mm/revAt a rotating speed at, N= 300 rpmWhere, Plate…

Q: A shaft shown in Figure Q3 is to be machined using a lathe machine. The diameter of a raw block is…

A: Explanation: The stepwise procedure to solve this problem is shown in the following attached image:

Q: A mild steel block is being drilled with a drill of 10 mm diameters. Given Helix angle = 30° Feed =…

A: Drilling is the most common hole-making operation. It is usually performed with the help of a twist…

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.