Estimate the machining time, Mechanical Engineering

Assignment Help:

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


Related Discussions:- Estimate the machining time

Compute a creative design solution, It is really significant of using a Gan...

It is really significant of using a Gantt chart in order to respect the deadline of a client. Show the five main areas that must be explored for a good time management. There

Determine the displacement response time, (i) Formulate the equation of mot...

(i) Formulate the equation of motion for the system shown in Figure. List TWO (2) assumptions made in this formulation. (ii) Find the response of this system at t = 3s. The syst

Illustration of cam, Illustration of CAM A cam rotating at consisted an...

Illustration of CAM A cam rotating at consisted angular velocity operates an oscillating follower. Draw cam profile for the given data: Angular displacement of the follower

State of motion of body change with force, State of motion of body change w...

State of motion of body change with force: A body on contact with the surface is being pulled along it with the increasing force from zero. How does the state of motion of bo

Find out the motion of the system, Find out the motion of the system: ...

Find out the motion of the system: Block (A) of mass M A = 40 kg is resting on coarse table having coefficient of friction = 0.1. This is tied up with an inextensible rope (

Branches of mechanics, Branches of mechanics: Mechanics is basically d...

Branches of mechanics: Mechanics is basically divided in to two parts Static's and Dynamics, Dynamics is further divided in kinematics and kinetics Statics: It deals with

Applications of seam welding, Applications of seam welding Lap seam wel...

Applications of seam welding Lap seam welding is used for the manufacture of cans, buckets and water tanks and for welding thin walled large diameter pipes. Mash seam welding

HEAT LOSS, HEAT LOSS IN CYLINDRICAL PIPE,PHYSICS

HEAT LOSS IN CYLINDRICAL PIPE,PHYSICS

Design equipment rooms for plant, Q. Design Equipment Rooms for plant? ...

Q. Design Equipment Rooms for plant? Equipment for important safety systems and controls shall be located such that they can remain operational during the defined accidental ev

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