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!
Calculate Drilling Speed and Machining Time
Calculate the drilling speed if a 50 mm dia hole of 60 mm depth is to be drilled in a M.S. component. The feed rate is 0.2652 and MRR is 200 cm3/min. Also calculate the machining time.
Solution
Given MRR = 200 cm3/min
= 200000 mm3/min
D = 50 mm
l = 60 mm
f = 0.2652 mm/rev
MRR = π D2 f N/ 4 mm3 / min
N = 200000 × 4/ (π× (50)2 × 0.2652)
= 384 rpm
V = π DN/1000
= (π × 50 × 384)/1000 = 60.3 m/min
Breakthrough distance, A = D/3.3286 = 50/ 3.3286 = 15 mm
Total length of drill travel, L = l + A + 2
= 60 + 15 + 2 = 77 mm
Time for drilling hole =
L / f N = 77/ (0.2652 × 384)
= 0.7561 min
The Bronzes The coinage bronze employed for making coins in earlier days contains 95% copper, 4% Sn and 1 % Zn. The Zn acts as a deoxidizer. Such alloy is soft and ductile.
(a) The following forces (all pull) act at a point : (6) (i) 20 N North-East (ii) 25 N due North (iii) 20 N 30o East of South (iv) 15 N due East (v) 30 N 60o South o
What are the basic components of an automobile ? Explain them briefly. Show a schematic diagram showing the layout of the transmission system of a rear wheel driven automobile.
Loading Conditions Non-uniformity of loading has to be considered in the choice of foundations particularly in highly compressible soils. It is not uncommon for buildings with
Time Dilation The measurement of time involves the concept of clocks attached at each position co-ordinate of a Lorentz frame. As a consequence of Lorentz transformations, it i
Question: A 3-phase, 15 kV, 4-pole, cylindrical rotor synchronous generator is connected to infinite bus running at 50 Hz. The synchronous reactance of the machine is X s = 0.
define the strategies of power plant
Throughout this project, you'll find questions that will direct you to think about how you're creating the drawing. Although you should not submit the answers to these questions, a
Motion of this particle: A particle of mass m is resting on a smooth horizontal plane as illustrated in Figure (a). It is associated to a spring which has a constant of k in f
All shell and head joints shall be double-welded butt joints with full penetration. In cases where double welding is impractical, the root pass shall be made by the GTAW process.
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd