HW5 - depth of cut = 0.6mm and the chip thickness ratio =...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Homework 5 (Due Wed. April 21) 1. What are the advantage and the disadvantage of traditional metal machining process? 2. What are the fundamental mechanisms of four type of chip formation in metal machining? 3. Based on the above Merchant’s circular force in the 2D cutting model, 1) Express the forces: Fs, Fn, Fc, Ft, F, N as functions of R and angles ( α , β , φ ). 2) Define the ratios of Fc/Fs, Ft/Fs, and F/Fs as functions of angles ( α , β , φ ). 4. The cutting conditions in a turning operation are: v = 2 m/s, f = 3.0 mm, and d = 0.25mm. The tool rake angle = 10 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. 5. The cutting force and thrust force in an orthogonal cutting operation are: F c = 1470 N and F t = 1589 N. The rake angle = 5, the width of the cut = 5.0 mm, the
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: depth of cut = 0.6mm, and the chip thickness ratio = 0.38. Determine (a) the shear strength of the work material and (b) the coefficient of friction in the operation. 6. An orthogonal cutting operation is performed using a rake angle of 15, t o = 0.012 in and w = 0.100 in. The chip thickness ratio is measured after the cut to be 0.55. Determine: (a) the chip thickness after the cut, (b) the shear angle, (c) the friction angle, (d) the coefficient of friction, and (e) the shear strain. 7. The orthogonal cutting operation described in previous Problem involves a work material whose shear strength is 40,000 lb/in2, cutting speed is 400ft/min, Based on your answers to the previous problem, compute: (a) the shear force, (b) the cutting force, (c) the thrust force, and (d) the friction force, (e) cutting power....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern