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ion is performed on a steel part using a 12.7-mm-diameter twist drill mmirev. Determine (a) cutting...
A drilling operation is to be performed on a cast iron workpiece to form a through hole that wifl be subsequently tapped. The hole diameter is 0.40 in., and the material thickness is 1.25 in. The poi...
A drilling operation is to be performed on a cast iron workpiece to form a through hole that wifl be subsequently tapped. The hole diameter is 0.40 in., and the material thickness is 1.25 in. The point angle of the drill is 118°. Cutting conditions are as follows: cutting speed = 50 ft/min and feed 0.003 in/rev. How long will the drilling operation take? Assume process time begins when the drill bit makes initial contact with the work surface
A...
A through hole with a diameter of 32.0 mm is to be drilled through a steel...
A through hole with a diameter of 32.0 mm is to be drilled through a steel plate that is 55 mm thick. Cutting conditions are as follows: cutting speed 25 mlmin, feed- 0.08 mm/rev.and the point angle of the drill115°. If machining time begins as soon as the drill makes contact with the work, how much time will the drilling operation take?
15 Points In one workshop, five holes (12 mm diameter) need to be drilled in a...
15 Points In one workshop, five holes (12 mm diameter) need to be drilled in a 50 mm thick steel plate. Three holes are blind with 30 mm deep, while the other two holes are through holes. At the moment there is only one drill available in the workshop with a tool diameter of 12 mm and point angle of 1180. The available tool can achieve a tool life of 1 minute at a cutting speed of 16 m/min using...
.Suppose you want to drill a 2-in. thick plate of cast steel (0.4%C), 4-in. diameter hole....
.Suppose you want to drill a 2-in. thick plate of cast steel (0.4%C), 4-in. diameter hole. An indexable HSS insert drill has been selected. Consider the table below, select the appropriate cutting speed, feed rate. Calculate the spindle speed (rpm), the feed rate (in/min), the MRR, and cutting time. Assume the cutting process will be performed in3 steps using 3 drills sizes in sequence 1”, then 2”, then 4”. Calculate the cutting total cutting time, considering a proper allowance each...
1. A face milling operation is performed on the top surface of a steel rectangular workpiece...
1. A face milling operation is performed on the top surface of a steel rectangular workpiece 12.0 in long by 2.5 in wide. The milling cutter follows a path that is centered over the workpiece. It has five teeth and a 3.0 in diameter. Cutting speed = 250 ft/min, feed = 0.006 in/tooth, and depth of cut = 0.150 in. Determine (a) the actual cutting time to make one pass across the surface and (b) the maximum metal removal rate...
b) The end of a large tubular work part is faced on a vertical boring mill....
b) The end of a large tubular work part is faced on a vertical boring mill. The part outside diameter 38.0 in, inside diameter-200 in, and height 18.0 in. İf the facing operation is performed at a rotational speed to rev min. feed 0.015 in rev, and depth of cut = 0.180 in, determine (a) cutting time to complete the facing operation and (b) cutting speeds and metal removal rates at the beginning and end of the cut.
2.(USCS units) A face milling operation is performed on the top surface of a steel block...
2.(USCS units) A face milling operation is performed on the top surface of a steel block that is 12.0 in long by 3.0 in wide by 2.5 in thick. The milling cutter follows a path that is centered over the width of the block. It has five teeth and a 3.0 in diameter. Cutting speed-250 ft/min, feed- 0.006 in/tooth, and depth of cut -0.150 in. Determine (a) machining time and (b) maximum removal rate during the cut. (c) If an...
Question 1 A turning operation is carried out on aluminum. Based on the specific energy values...
Question 1 A turning operation is carried out on aluminum. Based on the specific energy values in Table 20.2, determine material removal rate and cutting power in the operation under the following sets of cutting conditions: (a) Cutting speed 5.6 m/s, feed 0.25 mm/rev, and depth of cut 2.0 mm; and (b) cutting speed- 1.3 m/s, feed 0.75 mm/rev, and depth 4.0 mm. Question 2 Consider a turning operation performed on steel whose hardness 225 HB at a cutting speed...
QUESTION 5 During the orthogonal cutting of medium carbon steel rod with diameter of 75 mm...
QUESTION 5 During the orthogonal cutting of medium carbon steel rod with diameter of 75 mm and yield strength of 240 N/mm², the following machining data were used: Rake angle = 12°C Spindle speed = 950 rev/min Chip thickness ratio = 0.25 mm Depth of cut = 0.8 mm Width of cut = 5.0 mm Horizontal component of the cutting force = 1000 N The vertical component of the cutting force = 1400 N Calculate the following: (a) Shear plane...
A face-milling operation is being carried out on a 320-mm-long, 110-mm-wide, 50-mm thick annealed mild- steel...
A face-milling operation is being carried out on a 320-mm-long, 110-mm-wide, 50-mm thick annealed mild- steel block. The cutter follows a path that is centred over the workpiece and is applied on the top surface where it reduces the part thickness into 44mm. It has four teeth and is 150 mm in diameter. Cutting speed = 132 m/min, and chip load = 0.23 mm/tooth. Determine: Maximum metal removal rate during milling metal removal rate = _______________ ( ) Machining time...
A drilling operation is to be performed on a cast iron workpiece to form a through hole that wifl be subsequently tapped. The hole diameter is 0.40 in., and the material thickness is 1.25 in. The point angle of the drill is 118°. Cutting conditions are as follows: cutting speed = 50 ft/min and feed 0.003 in/rev. How long will the drilling operation take? Assume process time begins when the drill bit makes initial contact with the work surface
A...
A through hole with a diameter of 32.0 mm is to be drilled through a steel plate that is 55 mm thick. Cutting conditions are as follows: cutting speed 25 mlmin, feed- 0.08 mm/rev.and the point angle of the drill115°. If machining time begins as soon as the drill makes contact with the work, how much time will the drilling operation take?
15 Points In one workshop, five holes (12 mm diameter) need to be drilled in a 50 mm thick steel plate. Three holes are blind with 30 mm deep, while the other two holes are through holes. At the moment there is only one drill available in the workshop with a tool diameter of 12 mm and point angle of 1180. The available tool can achieve a tool life of 1 minute at a cutting speed of 16 m/min using...
1. A face milling operation is performed on the top surface of a steel rectangular workpiece 12.0 in long by 2.5 in wide. The milling cutter follows a path that is centered over the workpiece. It has five teeth and a 3.0 in diameter. Cutting speed = 250 ft/min, feed = 0.006 in/tooth, and depth of cut = 0.150 in. Determine (a) the actual cutting time to make one pass across the surface and (b) the maximum metal removal rate...
b) The end of a large tubular work part is faced on a vertical boring mill. The part outside diameter 38.0 in, inside diameter-200 in, and height 18.0 in. İf the facing operation is performed at a rotational speed to rev min. feed 0.015 in rev, and depth of cut = 0.180 in, determine (a) cutting time to complete the facing operation and (b) cutting speeds and metal removal rates at the beginning and end of the cut.
2.(USCS units) A face milling operation is performed on the top surface of a steel block that is 12.0 in long by 3.0 in wide by 2.5 in thick. The milling cutter follows a path that is centered over the width of the block. It has five teeth and a 3.0 in diameter. Cutting speed-250 ft/min, feed- 0.006 in/tooth, and depth of cut -0.150 in. Determine (a) machining time and (b) maximum removal rate during the cut. (c) If an...
Question 1 A turning operation is carried out on aluminum. Based on the specific energy values in Table 20.2, determine material removal rate and cutting power in the operation under the following sets of cutting conditions: (a) Cutting speed 5.6 m/s, feed 0.25 mm/rev, and depth of cut 2.0 mm; and (b) cutting speed- 1.3 m/s, feed 0.75 mm/rev, and depth 4.0 mm. Question 2 Consider a turning operation performed on steel whose hardness 225 HB at a cutting speed...
QUESTION 5 During the orthogonal cutting of medium carbon steel rod with diameter of 75 mm and yield strength of 240 N/mm², the following machining data were used: Rake angle = 12°C Spindle speed = 950 rev/min Chip thickness ratio = 0.25 mm Depth of cut = 0.8 mm Width of cut = 5.0 mm Horizontal component of the cutting force = 1000 N The vertical component of the cutting force = 1400 N Calculate the following: (a) Shear plane...
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