Calculate machining time and material removal rate, Mechanical Engineering

Calculate Machining Time and Material Removal Rate

A hole of 40 mm diameter and 50 mm depth is to be drilled in a mild steel component. The cutting speed can be taken as 65 m/min and the feed rate as 0.25 mm/rev. calculate the machining time and the material removal rate.

Solution

Given  V = 65 m/min

f = 0.25 mm/rev

D = 40 mm

L = 50 mm

Spindle speed,

N = (1000 × 65 )/ (π× 40)

 = 517.25 rev./min

Breakthrough distance,

A =      40/2 tan 59 = 12.02 mm

Total length of drill travel, L = 50 + 12 + 3 = 65 mm

Time for drilling the hole = 65 / (0.25 × 520) = 0.50 minutes

The material removal rate, MRR = (π× 402 × 0.25 × 520 )/4

= 163362.82 mm3/min

= 163.363 cm3/min

Posted Date: 12/24/2012 5:01:34 AM | Location : United States







Related Discussions:- Calculate machining time and material removal rate, Assignment Help, Ask Question on Calculate machining time and material removal rate, Get Answer, Expert's Help, Calculate machining time and material removal rate Discussions

Write discussion on Calculate machining time and material removal rate
Your posts are moderated
Related Questions
A UDL or uniformly distributed load is a load, which is reach over a beam in such a way that every unit length is laded to the similar extent.

Write down the expressions for the physical laws that govern each mode of heat transfer, and identify the variables involved in each relation.

Q. What is meant by dynamically induced emf and statically induced emf? On what factors do these depend? Derive eq. for these two emfs.   Sol. Dynamically induced emf:

what is Otto cycle?

Piston Area : The area of a circle of diameter equal to the cylinder bore is called the piston area and is designated by the letter A and is usually expressed in square centimetr

Explain construction and working of Belt transmission type Dynamometer?

Give a generalized definition of factor of safety. Illustrate the factors responsible for Un-certainities in design necessitating a suitable factor of safety. How is ‘factor of saf

How would you say environmental studies are multidisciplinary nature?

Determine the analytical solution for the maximum stress in the member shown. Submit screen shots that show the shape of the elements that result with a global element size of 0.15

milling machine time calcutation