Calculate drilling speed and machining time, Mechanical Engineering

Assignment Help:

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


Related Discussions:- Calculate drilling speed and machining time

Legal aspects of entrepreneurship development , Legal Aspect :  Few simple ...

Legal Aspect :  Few simple steps to take care of legal aspects of setting up a business are to register your unit with concerned organisation, check out the labour laws that would

Jig and fixture, design summarised of milling fixture

design summarised of milling fixture

Gripper design, what are the necessery calculation required to design a gri...

what are the necessery calculation required to design a gripper?

Refrigeration, In a steam jet refrigeration system, the ejector extracts 3....

In a steam jet refrigeration system, the ejector extracts 3.3 m3/s of saturated water vapor at a temperature of 7.2 °C from the flash chamber. The return water from the cooling coi

Circulation pumps, Are the types of pumps selected (base mounted, in-line)?...

Are the types of pumps selected (base mounted, in-line)? Locate pump on discharge side of boiler. Flexible connector used. Valving indicated, isolation valve on suction and dis

Rigid and linearly elastic material, Rigid and linearly elastic material: ...

Rigid and linearly elastic material: A rigid material is one which is having no strain regardless of the applied stress. A linear elastic material is one in which strain is

Shielding gases, SHIELDING GASES Shielding gas is directed by the to...

SHIELDING GASES Shielding gas is directed by the torch to the arc and weld pool to protect the electrode and the molten weld metal from atmospheric contamination.  Argon

Measurement of hardenability, Measurement of Hardenability: Two testi...

Measurement of Hardenability: Two testing techniques have been enhancement to measure the harden-ability of steels. The first, termed as cylinder series test, offers a single

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd