1.) The rake angle in an orthogonal cutting operation is -5.736°. The chip thickness before the cut is 0.249 mm, and the resulting chip thickness after the cut is 0.762 mm. The chip thickness ratio is _ 2.) The rake angle in an orthogonal cutting operation is 17.995°. The chip thickness before the cut is 0.254 mm, and the resulting chip thickness after the cut is 0.595 mm. The shear plane angle is _ degrees. 3.) The rake angle in an orthogonal cutting operation is -2.804°. The chip thickness before the cut is 0.204 mm, and the resulting chip thickness after the cut is 0.556 mm. The shear strain is _. 4.) Microscopic examination of chips obtained from actual machining operations have revealed that they are produced by _. 5.) Low-carbon steel with 300 MPa tensile strength and 220 MPa shear strength is turned at 2.5 m/s cutting speed on a lathe. Feed (cutting width) is 0.20 mm/rev and depth of cut is 3.0 mm. Rake angle is 5°. The resulting chip ratio = 0.45. The cutting force is _ N 6.) In a cutting operation using a -5 degree rake angle, the measured forces were Fc = 1330 N and Ft = 740N. When a cutting fluid was used, these forces were Fc = 1200 N and Ft = 710 N. What is the change in the friction angle resulting from the use of a cutting fluid, in degrees?
1.) The rake angle in an orthogonal cutting operation is -5.736°. The chip thickness before the cut is 0.249 mm, and the resulting chip thickness after the cut is 0.762 mm. The chip thickness ratio is _
2.) The rake angle in an orthogonal cutting operation is 17.995°. The chip thickness before the cut is 0.254 mm, and the resulting chip thickness after the cut is 0.595 mm. The shear plane angle is _ degrees.
3.) The rake angle in an orthogonal cutting operation is -2.804°. The chip thickness before the cut is 0.204 mm, and the resulting chip thickness after the cut is 0.556 mm. The shear strain is _.
4.) Microscopic examination of chips obtained from actual machining operations have revealed that they are produced by _.
5.) Low-carbon steel with 300 MPa tensile strength and 220 MPa shear strength is turned at 2.5 m/s cutting speed on a lathe. Feed (cutting width) is 0.20 mm/rev and depth of cut is 3.0 mm. Rake angle is 5°. The resulting chip ratio = 0.45. The cutting force is _ N
6.) In a cutting operation using a -5 degree rake angle, the measured forces were Fc = 1330 N and Ft = 740N. When a cutting fluid was used, these forces were Fc = 1200 N and Ft = 710 N. What is the change in the friction angle resulting from the use of a cutting fluid, in degrees?
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