In an orthogonal metal cutting test in a turning operation, the following conditions were recorded cutting...
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...
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...
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 of Engineering 21.1. In an orthogonal cutting operation, the tool has a rake angle=15°.The chip thickness before the cut = 0.30 mm and the cut yields a deformed chip thickness = 0.65 mm. Calculate (a) the shear plane angle and (b) the shear strain for the operation. 21.2 In Problem 21.1, suppose the rake angle were changed to a α= 0°. Assuming that the friction angle remains the same, determine (a) the shear plane angle, (b) the chip thickness,...
In a turning operation, cutting speed = 1.8 m/s, feed = 0.30 mm/rev, and depth of cut = 2.6 mm. Rake angle = 8°. After the cut, the deformed chip thickness = 0.56 mm and before the cut, the chip thickness = 0.26 mm. Determine (a) shear plane angle, (b) shear strain, and (c) material removal rate. Use the orthogonal cutting model as an approximation of turning
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An orthogonal cutting operation is being carried out under the following conditions: depth of cut-0.10 mm, width of cut 5 mm, chip thickness-0.2 mm, cutting speed = 2 m/s, rake angle = 15°, cutting force-500 N, and thrust force-200 N. Calculate the percentage of the total energy that is dissipated in the shear plane during 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:...
A lathe turning operation has the following parameters: Depth of cut = 2 mm Feed per revolution = 0.2 mm Cutting speed = 2.5 m/s Rake angle = 10 degree Fc/Ft = 1.5 Compute the following: (a) Cutting ratio (b) Shear Angle (c) Friction angle
During a turning operation on a lathe using a grooved tool, the
following forces were recorded:
Group
1
2
3
4
5
6
Feed force, Fx (kN)
1.70
1.68
1.59
1.75
1.67
1.64
Radial force, Fy (kN)
1.32
1.39
1.44
1.42
1.45
1.38
Tangential force, Fz (kN)
2.18
2.37
2.38
2.32
2.29
2.33
The machine set-up includes a feed (s) of 0.24 mm/rev. and the
depth of cut (d) of 2.5 mm.
Tool rake angle ()
= - 6 deg....
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...