Tata motors was established in 1945, when they started making locomotives. Company made its first commercial vehicle in 1954 in collaboration with Delimar Benz AG which ended in 1969.Tata motors has auto manufacturing and assembly plants in Jamshedpur, Pantnagar, Lucknow, Ahamdabad,sanbad,Dharwad and Pune in india as well in Argentina ,South Africa, and Thailand .Lucknow plant is divided in 3 division:1.Training division2.Assembly division3.Manufacturing division-(only crown wheel and pinion)

STOCK FLOW DIAGRAM

LOGISTIC CENTER

ASSEMBLY LINE 2

ASSEMBLY LINE 3

BIW SHOP

PAINT SHOP(CABS AND

COWLS)

VEHICAL TESTING AREA

VEHICLES ASSEMBLED AT LUCKNOW PLANT

ASSEMBLY LINE 2 ASSEMBLY LINE 3

1. AXLE: An axle is a central shaft for a rotating wheel or

gear.

(a) Dead Axle: A dead axle, also called lazy axle, is not part

of the drive train but is instead free-rotating. Many trucks

and trailers use dead axles for strictly load-bearing

purposes.

(b) Drive axle: The drive axle is a split axle with a differential

and universal joints between the two half axles

(c) Lift axle: These axles can carry more weight than a semi-

floating or non-floating axle assembly because the hubs

have two bearings riding on a fixed spindle

2. BRAKE CHAMBER: Air brake chambers are the primary

part of the air brake system

3. DRAGLINK: Provides the connection between the driver

and the steering system

BRIEF DESCRIPTION OF PARTS:

 The main testing’s done in logistic center are:

1. Differential leakage testing

2. Hub play/longitudinal play testing

3. Oil check in rear axle

TESTING PERFORMED IN LOGISTIC CENTER

• There are a couple places that it can leak. One is the

differential cover( the big melon looking thing right in

the middle of the axle) located on both axle's front

and rear. If it is leaking the bottom of it will look wet.

The second is the axle shaft seals located at the end

of the axle. This would require removal of the wheel

and hub assembly to diagnose.

DIFFERENTIAL LEAKAGE TESTING

• Hub play testing is done manually. It involves the use of a

instrument known as a dial test indicator. The trailer wheel

hub assembly connects the trailer tires to the trailer axle

and facilitates their spin. If those wheel hubs corrode or

aren't installed properly, it will throw the trailer tires out of

alignment and could lead to serious damage of your

vehicle

• For safe working of the axle the hub play should be around

40 to 120 micron. If the reading obtained is in between

this range the axle is considered to be safe for working

otherwise the axle is hold.

HUB PLAY TESTING

TRAILOR HUB

I. Some of the assembly part is covered in logistic

center itself. Trained professional are required for

this type of assembly as it is done manually.

II. Assembly part is completed by conjoining draglink

and brake chamber to the front axle

III. Rest all the assembly is done in assembly lines

ASSEMBLY PART

BODY IN WHITE

STATION 1:

DROPPING OF COWL

WORKING STATIONS OF BIW SHOP

STATION 2:

MASCOT FITMENT

STATION 3:

HEAT INSULATION

STATION 6:

ROUTING MAIN CABLES

STATION 5:

SERVICE INDICATOR

STATION 4 :

FITMENT OF T -EMBLEM

STATION 7:

FITMENT OF ENGINE HOOD

BEADING

STATION:9

FITMENT OF DOME

STATION 8:

FITMENT OF CLUTCH FLUID

CONTAINER

In Tata motors the manufacturing of crown wheel and

pinion takes place by various gear cutting process

• A crown wheel is a type of circular gear wheel with teeth that extend perpendicular to the base. These gears are often used along with a pinion to rotate a mechanical device

MANUFACTURING DIVISION

• Hobbing: is the process of generating gear teeth by means of a rotating cutter called a hob. It is a process in which both the cutting fool & work piece rotate in a constant relationship while the hob is being fed into work.

• GLEASON METHOD: The rotating cutters revolve about their axes to provide the cutting action. At the same time, they participate in the relative rolling motion between the cutters and blank to obtain the required tooth profile

GEAR CUTTING PROCESS

• Some of the things a dynamometer will tell you is

torque, hp on the ground, fuel distribution, oil pressure,

head pressure, etc., It will tell you what is going on with

the engine at that time and should tell you the general

condition of the engine. An oil analysis will reveal any

excessive wear going on in the engine. It is a good way

to check out a possible engine component failure before

the failure. It enables you to replace components before

they fail and cause potential damage to the engine. The

oil sample is usually done at the same time you do an

oil change, but you can have one done at any time.

DYNAMOMETER TESTING AREA