Illustrate theories in planning a machining sequence, Mechanical Engineering

Assignment Help:

Illustrate theories in planning a machining sequence

A component requires several machining operations to bring it to a final shape. The sequence of these operations are arranged optimally to attain maximum possible production. The following condensed example is presented in order to illustrate basic theories and reasoning followed by process engineer in planning a machining sequence. This example does not consider auxiliary and supporting operations; rather only the major process operations.

The operation sequence for the given pinion blank shown in Figure 11 is given below.

2151_Illustrate theories in planning a machining sequence.png

                         Figure 11: Pinion Blank

Facing of the surfaces 4 and 7 must be done first using two carbide tipped facing tools fixed on front slide of the turret lathe. The process may take 175 seconds per piece for full cycle of operation.

Operation 02

This operation can be done simultaneously with operation 5 by using a combination of tools like bore, drill φ17 HSS and carbide turning tool fixed in position 1 A of square turret. The operations included are

 (a)       Rough boring,

 (b)       Semi-finish turning of diameter 3, and

 (c)       Semi-finish facing of face 2.

Operation 03

The chamfers 6 and 5 must be finished using two chamfering tools fixed in position 2 of the turret.

Operation 04

Finishing of chamfer 1 may also be performed simultaneously with operation 10 by providing a chamfering tool on the rear slide.

Operation 05

Semi-finish boring of hole 8 may be done using a carbide tool fixed in boring bar at position 3 of turret.

Operation 06

Hole 8 must be reamed and surfaces 2 and 3 be finish turned by a combination of tools fixed at position 4 of turret by using HSS reamer 18K6 and carbide tipped turning tool.


Related Discussions:- Illustrate theories in planning a machining sequence

Explain gear forming, Explain Gear Forming In gear form cutting, cuttin...

Explain Gear Forming In gear form cutting, cutting edge of the cutting tool has a shape similar with the shape of the space among the gear teeth. Two machining operations, mill

Briefly explain how geothermal powerplant operate, Illustrate types of nucl...

Illustrate types of nuclear reactors with diagrams? a) Give advantages and disadvantages of nuclear power plant? b) Briefly explain how geothermal powerplant operate with fig

Determine the deflection , Obtain the equations of the elastic curve and us...

Obtain the equations of the elastic curve and use them to determine the deflection and rotation at point B in terms of E, I, F and L.

#thermodynamic, heat pump to estimate the COP acts as refrigerator experime...

heat pump to estimate the COP acts as refrigerator experiment abstract

Evaluate the inclination of the slotted bar, In a slotted and crank lever q...

In a slotted and crank lever quick return motion mechanism, the distance between the fixed centres is 240 mm and the length of the driving crank is 120 mm. Evaluate the inclination

Compare two stroke with four stroke engine, Compare Two Stroke with four st...

Compare Two Stroke with four stroke Engine: T w o Stroke Engine In two stroke engine all the four operation that is suction, compression, ignition and exhaust are compl

Determine lift coefficient, A thin spanwise symmetrical wing has an aspect ...

A thin spanwise symmetrical wing has an aspect ratio of 10 and a straight edges with  taper ratio (tip chord / root chord) of 0.8 and root chord of 1 m. This wing does not have geo

Stiffness properties in composite materials , There are five elastic proper...

There are five elastic properties needed to represent the elastic behaviour of a unidirectional laminate under in-plane loading, but only four of these are independent. The five

Relative motion, the jet transport B is flying at the velocity of 600km/h w...

the jet transport B is flying at the velocity of 600km/h when a smaller aircraft A passes underneath the transport headed in the 60 degree direction. To passengers in B, however ap

Leaf spring, weight of leaf spring in bus

weight of leaf spring in bus

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