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
In a 15 TR ammonia refrigerator plant the condensing temperature is 25 0 C and the evaporative temperature is -10 0 C. The refrigerant ammonia is subcooled by 50C before passing th
WHO IS HOME MINISTER OF INDIA OF 2014?
Q. Corrosion Assessment for Water Disposal System? Due to the high salt contents and oxygen contamination, disposal water is highly corrosive to CS material. HCL line and in
(a ) What are the demerits and merits of sliding mesh gear box? (b) Show a four speed gear box, including reverse speed for a passenger car and illustrate how the speed ratio is
In general safety and service tips, you learnt about general service and safety tips those must be followed while working in workshop. It gives the competency statements useful for
Discuss the method of properties, manufacturing and applications of following cutting tool materials: (i) Carbides (ii) Ceramics (iii) Cubic Boron Nitride (CBN) What ar
define elastomer.explain in details?
how to count point of contraflexture
Obtain the closed loop transfer function of the system shown:
Find out ratio of strain-energy: A circular rod of diameter d and length l is fixed at one end and a torque T applied at the other. Now, if any close coiled helical spring is
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