21.33. An orthogonal cutting operation is performed on a certain metal whose volumetric specific heat =...
21.33.
An orthogonal cutting operation is performed on a certain metal whose volumetric specific heat = 110 in-lb/in3-F, and thermal diffusivity = 0.140 in2/sec. The following cutting conditions are used: cutting speed = 350 ft/min, chip thickness before the cut= 0.008 in, and width of cut = 0.100 in. The cutting force is measured at 200 lb. Using Cook’s equation, determine the cutting temperature if the ambient temperature = 70°F.
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21.33.
An orthogonal cutting operation is performed on a certain metal
whose volumetric specific heat =...
In an orthogonal metal cutting test in a turning operation, the following conditions were recorded cutting...
In an orthogonal metal cutting test in a turning operation, the following conditions were recorded cutting speed = 160 m/min, feed = 0.28 mm/rev, width of cut-2.4 mm, rake angle-70. After the cut, the deformed chip thickness 0.45 mm, cutting force-950 N and thrust 400 N. Determine (a) shear plane angle, (b) The friction angle, (c) The specific energy of workpiece material, (d) The shear stress on shear plane (e) The friction force (f) The shear strain during the deformation...
Chapter 15: 1. Shear plane angle and shear strain: In an orthogonal cutting operation, the tool...
Chapter 15: 1. Shear plane angle and shear strain: In an orthogonal cutting operation, the tool has a rake angle = 16°. The chip thickness before the cut = 0.32 mm and the cut yields a deformed chip thickness = 0.72 mm. Calculate (a) the shear plane angle and (b) the shear strain for the operation. 2. Shear strength: The cutting force and thrust force have been measured in an orthogonal cutting operation to be 301 lb and 291 lb,...
Manufacturing Q10 - The shear strength of a certain work material 50,000 lb'in". An orthogonal cutting...
Manufacturing Q10 - The shear strength of a certain work material 50,000 lb'in". An orthogonal cutting operation is perfommed using a tool with a rake angle = 20° at the following cutting conditions: cutting speed = 100 ft/min, chip thickness before the cut = 0.015 in, and width of cut = 0.150 in. The resulting chip thickness ratio = 0.50. Determine (a) the shear plane angle; (b) shear force; (c) cutting force and thrust force, and (d) friction force. wers:...
During the turning operation, the cutting speed = 2.95 m/s, the feed f = 0.40 mm/rev,...
During the turning operation, the cutting speed = 2.95 m/s, the feed f = 0.40 mm/rev, the depth of cut, d = 1.83 mm, the rake angle α = 5° and the deformed chip thickness= 0.58 mm. The workpiece material has volumetric specific heat = 2.96 x10-3 J/mm3- °C, thermal diffusivity = 0.783 cm2/s and specific energy = 1.036 J/mm3, obtained at feed equal to 0.25 mm/rev. The correction factor for the specific energy is CF = 0.75 to-0.21, when...
1. A certain work material has shear strength of = 50,000 lb/in. An orthogonal cutting operation...
1. A certain work material has shear strength of = 50,000 lb/in. An orthogonal cutting operation is performed using a tool with a rake angle = 20° at the following cutting conditions: cutting speed - 100 ft/min, chip thickness before the cut = 0.015 in, and width of cut = 0.150 in. The resulting chip thickness ratio = 0.50. Determine (a) The shear plane angle; (b) Shear force; (c) Cutting force and thrust force, and (d) Friction force. 2.1 The...
1. The cutting conditions in a turning operation are v=2m/s f=. 25 mm. and d 3.0...
1. The cutting conditions in a turning operation are v=2m/s f=. 25 mm. and d 3.0 mm. The tool rake angle 10 degrees, which produces a deformed chip thickness t c = 0.54 mm. Determine (a) shear plane angle, (b) shear strain. and (c) material removal rate. Use the orthogonal cutting model as an approximation of the turning process. 3. The cutting force and thrust force have been measured in an orthogonal cutting operation: Fc = 300 lb and Fc...
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...
In an orthogonal metal cutting test in a turning operation, the following conditions were recorded cutting speed = 160 m/min, feed = 0.28 mm/rev, width of cut-2.4 mm, rake angle-70. After the cut, the deformed chip thickness 0.45 mm, cutting force-950 N and thrust 400 N. Determine (a) shear plane angle, (b) The friction angle, (c) The specific energy of workpiece material, (d) The shear stress on shear plane (e) The friction force (f) The shear strain during the deformation...
1. A certain work material has shear strength of = 50,000 lb/in. An orthogonal cutting operation is performed using a tool with a rake angle = 20° at the following cutting conditions: cutting speed - 100 ft/min, chip thickness before the cut = 0.015 in, and width of cut = 0.150 in. The resulting chip thickness ratio = 0.50. Determine (a) The shear plane angle; (b) Shear force; (c) Cutting force and thrust force, and (d) Friction force. 2.1 The...
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...
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