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
no passing rule definition
Objectives: After studying this unit and subsequent practicing, you should be able to acquire the skills required for troubleshooting of a motorcycle and identify different
A 3-phase, 15-kV, 4-pole, cylindrical rotor synchronous generator is connected to a 50-Hz infinite bus. The synchronous reactance of the machine is X s = 0.6 ohms per phase and th
Management of Financial Requirements: To start an own workshop or any business you need monetary support. You need to ensure availability of the required money including working
(a) Why do we change the engine oil at periodic intervals? (b) What are the recommended instructions to change engine oil? (c) How will you measure the engine oil level?
Combustion Chamber ( or Clearance Volume ) : Combustion chamber is a space between the cylinder head and the piston top when the piston is at top dead center (TDC). The combustio
Natur e of Bending Stress If the beam is not loaded, it will not bend as shown in the figure-a. But if the beam is loaded, it will bend as shown in the figure-b, whatever may
It is desired to produce an iron-carbon alloy that has a minimum hardness of 200 HB and a minimum ductility of 35%RA. Is such an alloy possible? If so, what will be its composition
helical gear
Product Definition Data Interface (PDDI) IGES provided a very practical first solution for CAD data exchange, complete with an exchange file format. It was remarkable in the sp
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