Threaded metric fasteners can have coarse and fine threads. A 14 mm bolt has a course pitch of 1.75 mm and a fine pitch of 1.25 mm. Determine (a) the maximum preload that can be safely achieved for co...
Threaded metric fasteners can have coarse and fine threads. A 14 mm bolt has a course pitch of 1.75 mm and a fine pitch of 1.25 mm. Determine (a) the maximum preload that can be safely achieved for coarse pitch and fine pitch threads for a 14 mm bolt. (b) the percent increase in preload of fine threads compared to course threads. Use a proof strength for both bolts = 600 MPa.
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Threaded metric fasteners can have coarse and fine threads. A 14 mm bolt has a course pitch of 1.75 mm and a fine pitch of 1.25 mm. Determine (a) the maximum preload that can be safely achieved for co...
Threaded metric fasteners are available in several systems, two of which are given in Table 31.1:...
Threaded metric fasteners are available in several systems, two of which are given in Table 31.1: coarse and fine. Fine threads are not cut as deep and, as a result, have a larger tensile stress area for the same nominal diameter. Using a proof strength of 228 MPa and a 12 mm bolt, determine the (a) maximum preload that can be used for coarse pitch and fine pitch threads and (b) percent increase in preload of fine threads compared to...
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...
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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