Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Estimate the Machining Time
A hollow workpiece of 60 mm outside diameter and 150 mm length is held on a mandrel among centers and turned all over in 4 passes. If the approach length = 20 mm, over travel = 12 mm, average feed = 0.8 mm/rev., cutting speed = 30 m/min, estimate the machining time.
Solution
We know that,
Cutting speed = π DN /1000
or, 30 = ( 60 × π N )/1000
N = 159 rpm
Now, the total (length) traveled by the tool in a single pass in given by :
L = 150 + 20 + 12
= 182 mm
Therefore, the total length traveled by the tool in its 4 passes is given by :
L1 = 182 × 4 = 728 mm
Now, the machining time (T) is given by following:
T = L1/ feed × N
= 728 / (0.8 × 1.59)
= 5.72 minutes
Navy divers are called to rescue a group of office workers trapped in a basement under floodwater in Leeds, UK. The only access to the basement is via a 1.5 x 1.5 m horizontal hatc
determine the minimum no of teeth required on pinion in order to avoid interference which is to gear with 1 a wheel to give a gear ratio of 3 to 1 solution in detail
(a) Compare 2 two-stroke cycle engines with 4 stroke cycle engines. What are the function of flywheel and Cam Shaft? (b) Derive a mathematical expression for efficiency of dual
Difference between direct and shear stress
How can I construct a tyre pumping machine.
how bike''s hydraulic shock absorbers work?
Example of change of enthalpy: Q 0.5kg/s of a fluid flows in steady state process. The properties of fluid at the entrance are measured as p 1 = 1.4bar, density = 2.5k
code
Evaluate elongation of bar of varying cross section: How you evaluate elongation of bar of varying cross section:? Sol.: Take bar made up of different lengths and which
Natur e of Distribution of Bending Stress Figure Nature of stress distribution in section of a beam It will be proved that bending stress at any layer of section o
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd