caparo maruti ltd. summer training report

32
2 CHAPTER-1 INTRODUCTION TO ORGANIZATION 1.1 INTRODUCTION CAPARO MARUTI . Is a premier industry setup in Bawal, Haryana dedicated for the production and designing of various sheet metal parts and components associated with automobiles. It has been a vendor MARUTI INDIA PVT.LTD. It is a multi-disciplinary and multi-dimensional organization dedicated for the production of number of components.It is one of the sister company out of group of companies. It is serving several of its clients. Large number of components ranging from simple to highly sophisticated ones, have been designed and developed by the company and their know-how’s have been passed on to the various of its clients. Over a period of time, CAPARO has acquired state-of-art expertise in designing components for different applications associated with automobile industry. Keeping pace with emerging trendsCAPARO has developed various components using state of the art technologies. It’s an ISO / TS 16949 : 2002 Certified company. It performs all of its operations under the norms as laid by the International Standardization Organization, keeping in view the well being of its employees and workers at every level.It is spread over an area total of 11406 Sq. Yards and th covering area is being 65196 Sq. Ft. . 1.2 LOCATION It is located in Bawal, the industrial city of Haryana state. Plot no. 85 to 102,sec.-7,HSIIDC Industrial Growth Centre , Bawal, Distt. Rewari (Haryana) INDIA 123501 One of the great advantages for the location is being that it is situated very near to the Gurgaon.

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Page 1: Caparo maruti ltd. summer training report

2

CHAPTER-1

INTRODUCTION TO ORGANIZATION

1.1 INTRODUCTION

CAPARO MARUTI . Is a premier industry setup in Bawal, Haryana dedicated for the

production and designing of various sheet metal parts and components associated with

automobiles. It has been a vendor MARUTI INDIA PVT.LTD. It is a multi-disciplinary and

multi-dimensional organization dedicated for the production of number of components.It is

one of the sister company out of group of companies. It is serving several of its clients. Large

number of components ranging from simple to highly sophisticated ones, have been designed

and developed by the company and their know-how’s have been passed on to the various of

its clients.

Over a period of time, CAPARO has acquired state-of-art expertise in designing components

for different applications associated with automobile industry. Keeping pace with emerging

trendsCAPARO has developed various components using state of the art technologies.

It’s an ISO / TS 16949 : 2002 Certified company. It performs all of its operations under the

norms as laid by the International Standardization Organization, keeping in view the well

being of its employees and workers at every level.It is spread over an area total of 11406 Sq.

Yards and th covering area is being 65196 Sq. Ft. .

1.2 LOCATION

It is located in Bawal, the industrial city of Haryana state.

Plot no. 85 to 102,sec.-7,HSIIDC Industrial Growth Centre , Bawal, Distt. Rewari (Haryana)

INDIA 123501

One of the great advantages for the location is being that it is situated very near to the

Gurgaon.

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1.3 An Overview of CAPARO MARUTI LTD.

Fig 1.1 CAPARO MARUTI LTD.

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1.4 PLANT STRUCTURE

i. Total Area :- 11406 Sq. Yards

ii. Covered Area: - 65196 Sq. Ft.

Power Back-Up Facility

i. Gen Set :- 500 KVA

ii. Gen Set :- 162 KVA

Plant Spare Capacity

50% Spare Capacity

1.5 ACHIEVEMENTS & AWARDS

Best vendor award from MUL (Maruti Udyog Ltd.)

Udyog Ratna Award

Maintaining ZERO DEFECT Products for GMI ; AVTEC ; M & M since Last

3 Years

Delivering Products ON TIME – EVERY TIME for all Customers.

1.6 OBJECTIVE

Aims at producing professionals endowed with technical competence and

leadership qualities.

To infuse thorough knowledge and impart industry -oriented practical training to

make the students a breed apart.

To inculcate a sense of discipline and responsibility coupled with logical thinking, so

that they are an asset for their employers.

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To instill a high level of self-confidence to make them successful in all walks of life

including entrepreneurship.

To emphasize their all round development, by ensuring participation in cultural

activities, group discussions, social get-togethers, sports, etc.

To imbibe a quality that makes them better citizens.

To create professional competence.

1.7 DEPARTMENTS

(i) Engineering Department

(ii) Production Department

(iii) Welding department

(iv) Quality section

(i) ENGINEERING DEPARTMENT

1. Engineering department deals with development of the fore coming parts of

Maruti.

2. Generally, majority of the parts are from MUL, Ggn. Parts are prepared and

there trial is taken. This department also deals with costing of sheet metal

parts, in which quotation are prepared in order to submit to the customers and

vendors.

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(ii) Production Department

In production department metal sheets are given desired shapes through stamping

process.Stamping press is used to produce the stamping operation.

What is a stamping press ?

A stamping press is a machine that houses the stamping tools (tooling) and carries them

around according to the kinematics indicated by the users (process set-up).

The knowledge of the press used for a stamping operation provides us with useful clues

regarding:

Values and distribution of restraining forces

Tool deformation caused by stamping forces

Contact and/or gap between tools and blank

However, we should recall that,at the moment when the die design is carried out, the press is

usually not yet known, so that its characteristics are rather a factor of noise than a useful

information.Therefore,it bwill be important to have a design that is robust with respect to the

press type.

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What is a stamping tool? What is process design?

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GLOSSARY:

Design surface Part as designed to fit in the car (after trimming)

Blankholder Surfaces that hold the blank before the forming

surface operation, including the restraining

Production Junction between the two former surfaces,

surface/run-offs protecting the design surface and controlling

material flow

Dieface Run-offs + blankholder

(iii) WELDING DPARTMENT

Resistance Welding is a welding process, in which work pieces are welded due to a

combination of a pressure applied to them and a localized heat generated by a high electric

current flowing through the contact area of the weld.

(a) Spot Welding (RSW)

• Spot Welding is a Resistance Welding (RW) process, in which two or more

overlapped metal sheets are joined by spot welds.

The method uses pointed copper electrodes providing passage of electric current. The

electrodes also transmitt pressure required for formation of strong weld.

Diameter of the weld spot is in the range 1/8‖ - 1/2‖ (3 - 12 mm).

Spot welding is widely used in automotive industry for joining vehicle body parts.

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Fig 1.2: Spot Welding

(b) Resistance Butt Welding

• Resistance Butt Welding is a Resistance Welding (RW) process, in which ends of

wires or rods are held under a pressure and heated by an electric current passing

through the contact area and producing a weld.

Fig 1.3: Butt Welding

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Butt welding is used for welding small parts. The process is highly productive and clean. In

contrast to Flash Welding, Butt Welding provides joining with no loss of the welded

materials.

(iv) QUALITY CONTROL SECTION

As the name suggests this section houses all sorts of tools and measuring instruments like

vernier calipers, vernier height gauge, slip gauges, surface plates, radius gauges,

inside/outside micrometers, depth gauges and hardness testing machines, torque wrench

testing machine etc. for checking the components purchased from the vendors from outside

the firm before being stored into the store lying adjacent to this section.

This section monitors whether the components supplied by the allied vendor party covers the

quality specifications of the company or not and according takes corrective action as and

when required. It also keeps a track record of the stock of components inside the store.

Being an ISO certified company; the firm is deeply concerned with managing of quality of

the purchased components which ultimately affect the quality of its final product.

The Quality Policy of the company can be quoted as:

Producing world class tractors in quality and reliability

Total customer satisfaction through services

Creating a culture among all employed toward total quality concepts

Constant up gradation of technology and human excellence

After so many accomplishments, the company is still striving hard to expand its capabilities

and setting up new establishments and manufacturing units in different parts of the country.

Some of the manufacturing units are under construction and soon will be ready to work. It

has signed MOU’s with several international firms to match up with the latest trends in the

automobile industry, the fastest growing industry of its kind in the current scenario.

Quality improving steps followed by caparo

1. 5S

2. Kaizen

3. 3R

4. 3M

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1. 5S:-

5S is the name of a workplace organization methodology that uses a list of five

Japanese words which are seiri, seiton, seiso, seiketsu and shitsuke

English meaning of 5S

I. Sorting (Seiri):

Eliminate all unnecessary tools, parts, and instructions. Go through all tools,

materials, and so forth in the plant and work area. Keep only essential items and

eliminate what is not required, prioritizing things per requirements and keeping them

in easily-accessible places. Everything else is stored or discarded.

II. Straightening or setting in order / stabilize (Seiton)

There should be a place for everything and everything should be in its place. The

place for each item should be clearly labeled or demarcated. Items should be

arranged in a manner that promotes efficient work flow, with equipment used most

often being the most easily accessible. Workers should not have to bend repetitively

to access materials. Each tool, part, supply, or piece of equipment should be kept

close to where it will be used – in other words, straightening the flow path. Seiton is

one of the features that distinguishes 5S from "standardized cleanup". This phase can

also be referred to as Simplifying[1]

.

III. Sweeping or shining or cleanliness / systematic cleaning (Seiso)

Clean the workspace and all equipment, and keep it clean, tidy and organized. At the

end of each shift, clean the work area and be sure everything is restored to its place.

This makes it easy to know what goes where and ensures that everything is where it

belongs. Spills, leaks, and other messes also then become a visual signal for

equipment or process steps that need attention. A key point is that maintaining

cleanliness should be part of the daily work – not an occasional activity initiated

when things get too messy.

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IV. Standardizing (Seiketsu)

Work practices should be consistent and standardized. All work stations for a

particular job should be identical. All employees doing the same job should be able

to work in any station with the same tools that are in the same location in every

station. Everyone should know exactly what his or her responsibilities are for

adhering to the first 3 S's.

V. Sustaining the discipline or self-discipline (Shitsuke)

Maintain and review standards. Once the previous 4 S's have been established, they

become the new way to operate. Maintain focus on this new way and do not allow a

gradual decline back to the old ways. While thinking about the new way, also be

thinking about yet better ways. When an issue arises such as a suggested

improvement, a new way of working, a new tool or a new output requirement,

review the first 4 S's and make changes as appropriate.

2. Kaizen:-

Masaaki Imai defined Kaizen as ―a means of continuing improvement in personal

life, home life, social life, and working life. At the workplace, Kaizen means

continuing improvement involving everyone—managers and workers alike. The

Kaizen business strategy involves everyone in an organization working together to

make improvements without large capital investments.‖

Mark R. Hamel has a slightly different definition: ―Kaizen is much more than an

event; it is a philosophy, mindset and, for breakthrough performance, a most critical

vehicle to achieve strategic imperatives and execute value stream/process

improvement plans.‖

The five main elements of kaizen

Teamwork

Personal discipline

Improved morale

Quality circles

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Suggestions for improvement

Kaizen is a daily process, the purpose of which goes beyond simple productivity

improvement. It is also a process that, when done correctly, humanizes the

workplace, eliminates overly hard work ("muri"), and teaches people how to perform

experiments on their work using the scientific method and how to learn to spot and

eliminate waste in business processes. In all, the process suggests a humanized

approach to workers and to increasing productivity.

3. 3R:-

Reduce, Reuse, Recycle, a hierarchy of waste management strategies to

minimize waste

4. 3M:-

i. Muda

ii. Mura

iii. Muri

"muda" meaning activity that is wasteful and doesn’t add value.

"mura", meaning "unnevenness"

"muri" meaning "overburdening".

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CHAPTER-2

MANUFACTURING OF PARTS

For the manufacturing of the parts first of all the Overview Of The plant is given.

Different operations are performed during the manufacturing of the different parts.

The operations performed during the manufacturing of different parts the following

processes are involved

(1) Press Shop

(2) Welding Shop

(3) Quality Section

2.1 Press Shop:

During the press shop firstly the sheet of Aluminum passes through the different

presses and performed different operations on it. The different presses & different

operations which are performed on the sheet are:

The different kind of presses used in the press shop is:

Type Of Press No. Of.

(1) 800 Tones 2

(2) 400 Tones 3

Table 2.1

The various operations are performed on the sheet during the press shop are

(1) Drawing

(2) Trimming

(3) Restrike

(4) Piercing/ Punching

During the drawing the sheet can be passed through the press of 800 Tones & the

specific shape of the given part provided to the sheet and during trimming the extra

part of the sheet which is not in work can be trim by the press and the extra part can

be thrown into the scrap. During the process of restriking the die can be strike on the

part again so that it can acquire the exact shape of the part & during the process of

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punching the different holes can be drawn on the part according to the shape. Press

contains different parts such as:

(1) Cushion Bed

(2) Lower Die

(3) Upper Die

The inner parts of a press which help to support the die are:

(1) Damping Unit

(2) Air Cylinder

(3) Lubrication System

The parts are shifted from one press to another by the loader & unloader.

The transfer belt is used to transfer the part from first press to another.

The different parts of press are:

(i) Cushion Bed:

Fig 2.1: Cushion Bed

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(ii) Lower Die:

Fig 2.2: Lower Die

(iii) Upper Die:

\

Fig 2.3: Upper Die

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The different internal parts of the press are:

(i) DampingUnit:

Fig 2.4: Damping Unit

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(ii) Air Cylinder:

Fig 2.6: Air Cylinder

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(iii) Lubrication System:

Fig 2.7: Lubrication System

Loader & Unloader:

Fig 2.8: Loader & Unloader

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Transfer Belt:

Fig 2.9: Transfer Belt

2.2 Welding Section :

Spot welding can be done on the parts for the joining of different small parts on the main

part. For example studs are attached to the different parts with the help of spot welding. Spot

welding mainly of two types

(i) Integrated Transformer Gun

(ii) Non-Integrated Transfer Gun

These are the two methods mainly used for the spot welding.

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Integrated transformer gun means a gun which is used for the spot welding contains the

transformer inside the gun. There is no outside transformer placed for the working of the

gun.

On the other hand Non Integrated Transformer gun can be used for the spot welding of

the parts contain a transformer side from the gun.

(i) Integrated Transformer Gun :

Fig 2.10: I.T. Gun

(ii) Non Integrated Transformer Gun :

Fig 2.11: Non I.T. Gun

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These are the two guns which are used for the welding purpose of the parts manufactured.

2.3 Quality Section:

In the quality section the part manufactured can be checked out

completely. In quality section these things can be checked out in the

part:

(i) Overlapping

(ii) Wrinkle

(iii) Deformation

(iv) Crack

(v) Dent

(vi) Material Strength

These are different facts that can be checked out in quality section which

are necessary to be checked out for the strength and accuracy of the part.

o Manufactured Parts:

Dash Waganor

Dash Versa

Wheel Housing

Chessy

Quarter Inner Lower

Frame Floor

Door Hinge

2.4 Manufacturing Process:

For the manufacturing of the above discussed parts a part is to be followed

by the different operations. Firstly, a part is to be moved from the press shop

where the drawing, trimming, restrike & piercing/punching can be & the

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shape can be provided to the sheet of the given specific die & then it can be

send to the welding section where the spot welding of the manufactured part

can be done & different studs, nut & bolt can be attached to the part

according to the specification of the part.

`

Manufacturing Process In Press Shop:

In press shop first of all a sheet of aluminum can be taken then it can be

placed in the different dies where different operations can be done on it.

DRAWING: Firstly, the process of draw can be done where the given specific

shape can be applied on the sheet by placing it on the die of that specific shape. The

die can be placed on M.B. in which cushion pins can be put according to the shape

these cushion pins pull up the die & a upper die is attached to upper M.B. with the

help of studs. For the manufacturing of part first of all power is put on and then

pressure is applied to upper die by the air cylinder situated at the top of press and

with the pressure the upper die moves towards down and hit on the lower die. When

the upper die strikes on the lower die the sheet present on the lower die attain the

shape of the die. The lower die does not move towards down because of cushion pin

which support the die. The cushion plays an important role during the manufacturing

of the parts because it support the die if any cushion is placed in a wrong way inside

the M.B. then it will damage the die so it is necessary to place the cushion pins

inside the M.B. correctly. The M.B. is placed on the cushion bed which helps to

absorb the damps which produced when the upper die strikes on the lower with a

pressure of 800 Tones. During the drawing the specific shape can be applied to the

sheet. According the part the can be loaded on the M.B. and the placed on the

cushion bed and then the process of manufacturing starts. Loader takes the sheet

from the shelf where it can be provided by the workers. The loader picks the sheet

and placed it on the die. Then the operation of draw is started and the shape of the

die can be applied on the sheet. There is a big importance of angle of stroke during

the press operations. The accuracy of the part depends upon the stroke of press,

commonly the stroke is 180*(Degree). Lubrication system also plays an important

role during the operation of press because without lubrication it can’t be easier to

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drive such kind of heavy press so it is necessary that lubricating pump should work

properly.

Fig 2.12: Drawing Operations

TRIMMING : Trimming is a operation in press shop in which after the process of drawing

the remaining part which is useless on behalf of the structure of part is to cut by this press. In

trimming the upper die contains blade on the edges of it and when it strike on the lower die

where the part with extra useless part is placed is to be trimmed. So trimming is a necessary

operation on behalf of the structure of the part. This press is of 400 Tones and strikes on the

lower die which is placed on the M.B. and supported by the cushion pins which are necessary

to hold the die during the striking operation. If any of the cushion pin put in wrong way

inside the M.B. then it will damage the die & sometimes die will breakdown due the pressure

of the press and cant be able to absorb the vibrations produced by the cushion bed and as a

result the die will damage so it is necessary to placed the cushion pins correctly according to

the drawing of the part. During trimming it is necessary to take care of angle of stroke and the

lubrication system because it is necessary for the accurate working of the press. The press

contains a air cylinder on the top of the press in these cylinder air is to be compressed and it

helps in the stroke of the press so there are so many things which can be checked during the

working of press.

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Fig 2.12: Trimming Operation

So trimming is a operation in which the remaining portion of the part which is not useful is

to be removed by the cutting operations

RESTRIKING: Restriking is a operation in which after the trimming operation the part is

taken by the unloader and put it on the transfer belt which takes it up to the another press

from where the unloader takes the part and put it on the press where the die of same kind is

already placed and the part is placed on the die and then operation of restrike done again. In

the operation of restrike the upper die is again strike on the part which is placed on the lower

die. The lower die is placed on the M.B. and the operation of restrike can be done because

during the operation of drawing some design can be missed and during the restriking

operation these designs can be made on the part so restriking operation is the important

operation on behalf of the design of the manufacturing of part because the accuracy of the

part depends upon the operation. During this operation the stroke of press can be take care so

that the complete process of the designing of part can be completed with complete accuracy

because the accuracy of the part is necessary because the complete design of the car can be

based on the accuracy of that part. So restriking operation can be done on the part after the

trimming operation so that the complete design can be made on the part. In this process again

the cushion pin plays important role on the die because the cushion pins support the die to

absorb the damps which are produced by the striking of upper die on the lower die and the die

press is of 400 Tones which is used for the restriking operation.

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The part on which the restriking operation an be done:

Fig 2.13: Restriking Operation

So restriking operation is done for the accurate design of the part by restrike the press on the

part placed at the die.

PUNCHING/PIERCING: Punching is operation in which the punch can be made on the

part for the complete accuracy of it. During the punching the punches can be made on the part

because punches can be necessary according to the construction and working of it, because

without punches a part cant be fit into the car, so the punches are necessary according to the

constructional accuracy of it. After the operation of restrike the unloader picks the part from

the press and put it on the transfer belt which transfer it up to the another press where the

punching operation can be done. The loader takes the part from the belt and put it on the die

which is placed at the M.B. the upper part of the M.B. contains a die on it with the punches so

that when it strike on the lower die the punches can be made on the part according to the

construction of the die. So the punching operation is necessary according to the construction

of the part. The press works fully automatically and the different parts of the press such as

loader- unloader, transfer belt works automatically and plays an important role for the

construction of the part during the all operations of the press. The lubricating system is also

necessary for the accurate working of the press because without the complete and accurate

lubrication it can’t be possible to drive such kind of heavier press. The punching operation is

the last operation that can be done in the press shop and the die used for the punching

operation is of 400 Tones and upper die strike on the lower die with the pressure of 400

Tones and this pressure can be maintained by the air cylinders which are placed at the top of

the press. The part which is to be punched is complete in its construction and then sends it to

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the quality check department for checking the accuracy and the defects producing during the

press shop operations. The part manufactured after the press shop operation is:

Fig 2.14: Complete Structure Of the Part

So during the Press Shop Department the four operations can be done

(i) Drawing

(ii) Trimming

(iii) Restrike

(iv) Punching/Piercing

After these four operations the part is completely ready according the construction and shape

of it. These four operations can be done on the dies of different loads the die used for the

Drawing Operation is of 800 Tones and the presses used for the remaining three operations

are of 400 Tones.

WELDING OPERATION: After the press shop operation the part is ready for adding the

different nut and bolts to be attached on it the part is sends to the welding section where the

spot welding can done on it. The Spot Welding can be done on it with two different kind of

welding:

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(i) I.T. Gun Spot Welding

(ii) Non-I.T. Gun Spot Welding

(i) I.T. Gun Spot Welding: In I.T. Gun Spot Welding the spot welding can be done

with the help of a gun which contain the transformer in it. This kind of press

called as the I.T. Gun and the spot welding can do on it more easily as compare to

the other welding operations. The gun used for the I.T. Gun Spot Welding is:

Fig 2.15: I.T. Gun

(ii) Non I.T. Gun Spot Welding: In Non I.T. Gun Spot Welding operation the gun

used for spot welding does not contain transformer in it. The transformer is placed

outside of the gun. The name of the Non I.T. Gun is Non Integrated Transformer

Gun for spot welding. The gun used for Non I.T. Gun Spot Welding is:

Fig 2.16: Non I.T. Gun

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Spot Welding can be done on the parts because it support the aerodynamic condition because

it is light in weight as comparison to the other welding techniques and its cost is less as

compare to other welding techniques.

After the welding process the part is sends to the final Quality Section where the quality of

the part and the accuracy of the part can be checked.

QUALITY SECTION: After the welding process the part is sends to the quality section

where the quality checker checks the quality and accuracy of the part because it is essential to

check the accuracy of part. The defects can be checked at that department because it is

necessary that a part should be accurate because without the accuracy it can’t be fitted into

the car. So it is necessary to checked out and solves these problems of the part the certain

defects that can be produced on the surface of the sheet during the press shop operations are:

(i) Overlap

(ii) Cracks

(iii) Wrinkle

(iv) Deformation

(v) Dent

These are the different defects that produced on the surface of the sheet during the press

operation such as drawing, trimming, restriking and punching. During these operations these

defects can produced so it is necessary to check these defects because these defects are not to

be favorable according to the structure of the part. So in quality checking section the checker

check this defects and solves these by different operations.

So this is the manufacturing process of the parts in which following three stages can be used:

(i) Press Shop Operations

(ii) Welding Shop Operations

(iii) Quality Checking Section

And after these three stages the part is ready for the supply and fitted into the car. So this is

the manufacturing process of the different parts.

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CHAPTER-3

RESULTS & DISCUSSION

3.1 RESULTS:

3.1.1 Successful Development Of The Part: In the final we getting the result of the

successful development of the part. The part can be developed according to its profile which

is provided by the company to the engineers. According to its structure a die can be used for

the manufacturing of the part. For the manufacturing of the different parts different dies can

be used which are according to the shape of the part. The die is loaded on the M.B. and M.B.

can be placed inside the press as the lower unit and a upper portion of the die can be attached

to the upper M.B. with the help of studs. When the die is loaded then the complete automatic

process of the press starts and the pressure starts creating in the cylinders which are attached

at the top portion of the press. When the pressure completes then the upper die completes its

stroke and the single- single operations can be completed on different presses. The presses

used for these different operations are of different pressures the press used for the drawing

operation is of 800 Tones and the presses used for the remaining operations are of 400 Tones

that means the upper die strikes on the lower one with that pressure. The damps produced in

the press by this strike are absorbed by the damping unit which is under the cushion bed. The

M.B. is placed on the cushion bed and the damps can be absorbed by the damping unit. After

the every operation complete the part sends to the welding shop where the nut and bolts are

attached to the part according to the constructional detail of the part with the help of the spot

welding and at last the part is checked by the quality checkers and ready for delivery. So this

is the successful development of the part.

3.1.2 Get The Chance To Gain The Knowledge: After watching the complete

phenomenon of manufacturing of part we are able to getting the knowledge about the

different press operation such as drawing, trimming, restriking and punching. The different

part of the die works in a different manner and these are automatically done so after watching

these operations we are able to get the knowledge of different press operations.

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After the different press phenomenon the different welding operations are

performed on it. The welding operation is used is the Spot Welding operation in which spot

welding can be done in different two ways:

(i) I.T. Gun

(ii) Non I.T. Gun

These are the two welding operation which are used for the spot welding so we get the

knowledge about the different spot welding techniques and machines which are used for spot

welding. By watching this complete we are able to get the knowledge of the different

processes that can be used in the factory for the manufacturing of different parts. So after

getting the complete training we get the knowledge of different processes.

3.2 DISCUSSIONS:

3.2.1 Defects Produced In Sheet: During discussion we discuss about the problem

facing during the manufacturing process of the different parts. Basically the main problem

can be faced is of different defects produced during the manufacturing phenomenon. The

different defects produced are:

(i) Wrinkle

(ii) Overlapping

(iii) Crack

(iv) Deformation

(v) Dent.

These are the main problems that are faced during the manufacturing process of part.

These defects can be discussed during the training

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Fig 3.1: Defects Produced In The Sheet

3.2.2 Problem Produced In The Presses: There are different problem that

produced during the working condition of press and these defects can be studied or

discussed during training. The different defects produced in the presses are :

(i) Lubrication Problem

(ii) Pressure Problem

These are the problems that are produced during the working condition of the press. So

these defects can be discussed or solved out during training.

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CHAPTER-4

CONCLUSION

In conclusion we are discussed to solve the problems produced during the working condition

of the press and manufacturing of the parts. To solve the defects produced on the surface of

the sheet during different press operations different processes can be used if the damage is

small and it can easily be repaired then it can be machined and repaired it but if the defect is

not be able to correct then the sheet can be thrown into the scrap. If the problems are small

and it can easily be repaired then different operations such as hammering, machining can be

used. After applying these processes the defects can be removed the surface of sheet because

without removing these defects it can’t be possible to use these parts. A defected piece can’t

be used in the manufacturing of the car so it is necessary to remove theses defects. In

conclusion we discussed the process used for the removal of the defects.

There are certain defects produced during the working of press. The different defects

produced during the press operation are lubrication problem, less pressure produced in the

cylinders. It is necessary to solve these problems because without solving these problems the

press can’t work automatically. If any operation of the press stops working then press stops

working so it is necessary to solve these problems. Sometimes the pump of lubrication stop

working and the press stops working. So this effect can be checked out and clear it so that the

press should work properly. Sometimes the cylinder cannot produce proper pressure for the

stroke of the die so it is necessary to solve this problem that the press should stroke properly.

The pump stops working and the pressure stops producing in the cylinders and due to this the

press stops working so we find out the problem and solve this so that press should work

properly.

So these are the basic conclusions that are made to solve the problems produced during the

different operations.