A turning operation is made with a tool tilted 10° from the normal to the workpeice axis of rotation and the tool has a rake angle of 20°, and a depth of cut = 1mm. The shear strength of the work material is known to be 345 MPa, the coefficient of friction is 1.2, the chip thickness is measured after the cut to be 2.5 mm, and the cutting speed is 1000 mm/sec. As a production engineer you have been asked to set a value for i) Cutting Forces ii) estimate the power dissipated in friction and iii) estimate the specific energy. Assume width of cut to be 3 mm Hint: shear force = shear strength shear area, shear area depth of cut/ sin (shear angle)

A turning operation is made with a tool tilted 10° from the normal to the workpeice axis of rotation and the tool has a rake angle of 20°, and a depth of cut = 1mm. The shear strength of the work material is known to be 345 MPa, the coefficient of friction is 1.2, the chip thickness is measured after the cut to be 2.5 mm, and the cutting speed is 1000 mm/sec. As a production engineer you have been asked to set a value for i) Cutting Forces ii) estimate the power dissipated in friction and iii) estimate the specific energy. Assume width of cut to be 3 mm Hint: shear force = shear strength shear area, shear area depth of cut/ sin (shear angle)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

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.

Question

A turning operation is made with a tool tilted 10° from the normal to the workpeice axis of
rotation and the tool has a rake angle of 20°, and a depth of cut = 1mm. The shear strength of
the work material is known to be 345 MPa, the coefficient of friction is 1.2, the chip thickness
is measured after the cut to be 2.5 mm, and the cutting speed is 1000 mm/sec. As a
production engineer you have been asked to set a value for i) Cutting Forces ii) estimate
the power dissipated in friction and iii) estimate the specific energy.
Assume width of cut to be 3 mm
shear area= depth of cut/ sin (shear angle)
Hint: shear force = shear strength * shear area,
Use effective rake angle instead of rake angle

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