copy of vaibhav

8/13/2019 Copy of Vaibhav

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Menon Pistons Limited, Plant II, MIDC Kupwad

Report of In-Plant Training

IN

Menon Pistons Limited, Plant II , Kupwad

By

1.wale!ar "ai#$a% P. &.Ta!ale B$anudas B.

'.Bagwan (u$el . ).*erwade Pramod B.

+.Kulal (anay . .Pat!i (aura#$ .

Submitted in partial fulfillment for confirring

egree of Ba/$elor of Te/$nology 0Me/$ani/al

2f

($i%ai 3ni%ersity

Kol$apur

epartment of Me/$ani/al 4ngineering

T(5s (anay B$o!are 6roup of Institutes,

Mira.

'711-'71'

1


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1. COMP!" P#O$IL%

Location

Menon Pistons Limited, Plant II

&'1, MIDC, Kupwad (loc),

Sangli * +1 +1,

Ma-aras-tra, India.

Mission Core /alues0'

/ISIO!

o be t-e world2s leading pro3ider of auto component manufacturing

total engineering solutions to automobile manufacturers across t-e world.

MISSIO!

o pro3ide inno3ati3e products of world class 4ualit5 at reasonable prices.

6ualit5 Polic50

primar5 responsibilit5 at Menon Pistons Limited is to offer cost effecti3e

4ualit5 products to its customers7

owards -is 8e Commit Oursel3es0

o meet t-e Customer e9pectations of current : future needs.

o co'ordinate and ac-ie3e impro3ements and effecti3eness in areas of

4ualit5 and processes on a continual basis.

o endea3or to upgrade tec-nologies and s5stems and practices to meet

statutor5 and regulator5 re4uirements.

o ac-ie3e -ig-er goals of e9cellence b5 establis-ing ob;ecti3es and targets

at rele3ant and appropriate inter3als and monitor t-eir effecti3eness

periodicall5.


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wards Laurels0'

-e $irst Compan5 in India to de3elop #ing Carrier Pistons

(%S /endor ward from Maruti =d5og Ltd in t-e 1>>+'>?

@S-ip * to * =se7 Status b5 C=MMI!S I!DI LD since 1>>?

$aster De3elopment ward from Kirlos)ar Oil %ngines Ltd

ISO:S0 1>+> Certified b5 =/ Suddeutsc-land in


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Design and manufacturing acti3ities are continuall5 impro3ed b5 -a3ing in

'-ouse testing facilit5 for t-e 3alidation of t-e product before offering t-e product

to t-e Customer.

MPL -a3e been acti3el5 associated wit- t-eir Customers in carr5ing out

trials using t-eir test facilit5 for arri3ing at mutuall5 acceptable performance

le3els. -e e9perienced Design team of 5oung %ngineers at MPL pro3ides two

dimensional and t-ree dimensional solid modeling facilities and anal5sis utiliEing

t-e Pro'% 8ildfire*< foundation pac)age for t-e Surface modules, ad3ance

Modeling e9tension and t-e rele3ant CD and C% facilities. 8it- t-e

e9perienced team, MPL wor)s as a complete solution pro3ider to its Customers b5

underta)ing t-e product de3elopment from conceptual stage to product realiEation

wit- t-e s-ortest possible lead time. MPL stri3es -ard to pursue Customer

satisfaction t-roug- t-eir Process Control and non destructi3e 6ualit5 c-ec)s as

well as maintenance and impro3ement of t-e 6ualit5 S5stems. (5 use of rigorous

6ualit5 Standards and S5stems at 3arious stages of manufacturing wit- t-e

computeriEed On'Line *Statistical Process Control.ec-ni4ues, MPL ensures t-at

products w-ic- reac- t-e customers are defect free and -a3e been produced wit-

t-e -ig-est International 6ualitati3e Standards.

MPL -as been awarded and Certified b5 t-eir 3alued Customers for t-eir

6ualit5 related acti3ities and -a3e been recogniEed as t-e most @6ualit5 Conscious

and Consistent7 Supplier. ll Plants of MPL -a3e been certified for @ISO:S

1>+>7


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Produ/t Range8-

In 1>G?, MPL set up its Second Plant in Sangli w-ic- is around A

Kilometers from Kol-apur and manufactures around A mm featuring Single lfin and Dual lfin Bra3it5 Die Cast

Pistons. MPL manufacture t-ese Pistons on a dedicated manufacturing facilit5 wit-

special purpose C!C Mac-ines to produce comple9 OD Profiles, and

Pin bores wit- O3al (ore, trumpet bore or reliefHs as per t-e re4uirement.

-e complicated Core Profiles featuring on t-ese Pistons are generated appl5ing

FD modeling facilities using Pro'% 8ildfire'< foundation pac)age for surfacemodeling, ad3anced modeling e9tension and ool Design Pac)age for

?


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manufacturing to ac-ie3e targeted sections and effecti3e control on t-e weig-t of

t-e Piston for optimum balance of reciprocating masses. Some of t-e special

features w-ic- are pro3ided in t-e design of t-ese bigger siEe Pistons Diameters of

11A mm to 1JA mm range

wo pieces constructions of Pistons #IC=L%D PISO!S wit-

forged C-rome Mol5 Steel Crown coupled wit- luminium llo5 S)irt -eld

toget-er b5 a Piston Pin w-ere t-e guidance and sealing function are separated

from one anot-er. (ecause of t-is design, t-e s)irts is better s-ielded from -ot

Piston crown and ring one and can, t-erefore, be installed wit- smaller clearances

t-an t-e one'piece Piston, w-ic- -as a positi3e effect on 6uiet running.

'. *ea%y9Medium9Lig$t :ommer/ial "e$i/les wit$ iesel 4ngines.

$ig. Cooled Baller5 Cut Section fig. +SP %uro III Piston

In 3iew of t-e ensuing legislations and t-e )eenness of t-e Bo3ernment to

pro3ide en3ironmentall5 friendl5 ambience, t-e modern Internal Combustion

%ngines need to introduce !ew ec-nologies for compl5ing wit- t-e emission

legislations.


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-e new ec-nologies call for design of Pistons to wit-stand increased

specific power output, increased in;ection pressures, -ig- pressure turbo c-arging

wit- after coolers, to compl5 wit- stringent emission regulations w-ile satisf5ing

t-e re4uirements of low fuel and lube oil consumption.

MPL manufactures wide range of Pistons in diameter range of J?mm to 1FA

mm wit- and wit-out @Cooled Baller57 features. -e design and manufacturing

facilities a3ailable wit- MPL enables t-em to design, produce and optimiEe t-e

features suc- as, @ as cast Oil drain Poc)ets7, utot-ermic:utot-ermatic Piston

wit- @control e9pansion7, Steel struts to pro3ide lesser fitting clearances for

reduced noise le3els, Budgeon Pin (ore offset for effecti3e load balancing:noise

control, Cooled Baller5 Pistons

+. Bi-w$eeler 0& (tro!e 9 (mall 4ngine ppli/ations

$ig. /S /ictor:(o9er: $ig. Copeland Pistons

&ero &onda

wide range of Pistons for < Stro)e and + Stro)e %ngines in t-e diameter

range of +A to A mm for powering t-e Scooters, Motor C5cles and #efrigeration

ir Compressors are made from %utectic and &5pereutectic luminium llo5

w-ic- are 3er5 cost effecti3e and pro3ide 3alue for t-e mone5.

J


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-ese Pistons are offered in attracti3el5 pac)ed containers as assemblies

consisting of Pistons, Budgeon Pin. MPL produces about 1.F million pistons

annuall5 of +1mm diameter for #efrigeration ir compressor sealed units. -ese

are manufactured on special purpose mac-ines wit- close tolerance and e9tremel5

good surface finis- to pro3ide H6uiteH running of t-e compressors.

&. 6udgeon pins

$ig. Budgeon pins

-e5 mainl5 manufactured pistons, Pistons rings gudgeon pins. -e5 are

/ander for 1F companies from w-ic- ma;or are automobile companies. -e5

suppl5 pistons for elco, (a;a;, Ma-indra Ma-indra, Kirlos)ar oil %ngines

Coment Diesel %ngines, Cummins India Ltd.

8or)ing S-ifts

-ere are F s-ifts per da5. In all t-ree s-ifts production is done

continuousl5. urno3er of compan5 is about 1< to 1? corers per 5ear. Compan5 is

-a3ing ISO0 >AA S'1>+> certificate called =/.

;23NR< PR:TI:4(

G


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:$arge Material -

-e raw material re4uired for pistons casting consist of luminum

ingots, re;ected pistons cut off pro;ections, etc.

:$emi/al :omposition -

s per t-e c-emical results in c-emical composition are depends on

t-e re4uired properties of piston li)e -ardness. $or e9ample c-emical composition

of

l-B3TT2N (MPL4 LM-1+91=) is gi%en #elow8

l * G+.J Si * 11.J? $e * A.+

Cu * A.? Mn * A.1? Mg * 1.? n * A.1F i * A.A1

Pb * A.A1 Sn * A.AA


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In t-is process molten metal is broug-t collected into -olding

furnace. -is operation is done to -old t-e molten metal maintain re4uired temp

to )eep in melting condition. fter collecting molten metal in -olding furnace t-e

CL%!OL powder is spread o3er it for remo3al of slug i.e. dross, etc. from melt.

6as > :$emistry :$e/!ing -

In molten metal mi9 alrefine powder in it stir it well. -en wait for 1?

to


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Parting, ;elting > (torage of /asting -

During casting, runners risers are pro3ided along wit-

ot-er necessar5 pro;ections. -ese pro;ections re4uired to be remo3ed w-ic- is

done in parting felting operation. fter t-is pistons are stored in round buc)et

t-en transferred to furt-er operations.

*eat Treatment -

-e casting produced is -a3ing lower -ardness. 8e re4uire

-ardness up to ?A (. $or t-is purpose t-e -eat treatment is done on casting. t

first solution treatment is done at +GA to +>A NC in pit t5pe electric furnace. -en

t-ese pistons are 4uenc-ed in water to a3oid soft spots due to bubble formation

w-ile castings are rapidl5 dipped in out in water.

fter solution treatment 4uenc-ing, t-e precipitation treatment is

done on casting. $or t-is purpose t-e furnace =sed in bo9 t5pe, electricall5 -eated

furnace. -e temperature ac-ie3ed is 1GA'


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PI(T2N M:*IN4 (*2P PR:TI:4(

;oundry

-e foundr5 is t-e beginning of t-e piston. t t-e foundr5 t-e die is

prepared b5 -eating it to operating temperature for appro9imatel5 one -our. -is

process allows t-e die to readil5 accept t-e molten material w-en it is poured.

$ig. Pouring of molten metal in die

T$e die

-e dies used are ? pieces and t-ree pieces. -ese dies are made from cast

iron wit- steel inserts for t-e gudgeon pin -oles and t-e cores. -e cores dictate t-e

placement of t-e gudgeon pin and can be located to gi3e offset pins or s4uare pins.

1


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$ig. Die

1F


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T$e pro/ess

-e process starts b5 -eating t-e material to JAA degrees Celsius. -is is

well abo3e t-e melting point of t-e aluminum, but below its boiling point. -ematerial is t-en scooped up wit- a ladle from t-e crucible t-e pot t-at -olds t-e

molten material. -is is t-en poured into t-e die t-roug- t-e spur. -e material is

t-en allowed to cool before it is remo3ed from t-e die and placed into a bin of -ot

water. -is water is used to facilitate a more e3en settling of t-e -ot metal. fter

t-e castings -a3e -ad time to cool t-e5 are placed into a -eat treatment plant

o3ernig-t. -is process tempers t-e casting and ensures t-e piston will -a3e

impro3ed 4ualities. fter it is remo3ed from t-e -eat treatment t-e casting -as its

runner remo3ed. -is process ta)es little time and is full5 automated.

$ig. Cutting e9tra pro;ections

Pin Boring

t t-is stage of t-e piston manufacturing process t-e casting -as t-e gudgeon pin

-ole roug- mac-ined and t-e locating bung mac-ined. -e bung t-is process is

w-ere t-e casting is mac-ined on t-e base to allow placement of t-e casting in

ot-er mac-ines. -is is carried out on a simple lat-e.

1+


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$ig. Pin boring

Pin boring is done in con;unction wit- t-e bung turning, as one casting is

remo3ed from -a3ing t-e bung face mac-ined it is placed on t-e pin borer. -e pin

borer is onl5 a roug- mac-ining process w-ic- allows t-e reamer to enter t-e

gudgeon -ole later.

:N: Turning urning of t-e casting is carried out on C!C Computer !umeric Control

mac-iner5. -is e4uipment is t-e most accurate and fastest a3ailable for t-is

application wit- 3er5 tig-t tolerances and e9tremel5 fast spindle speeds.

-e castings are placed in t-e lat-e on a bung and -eld in place b5 a solid rod

t-roug- t-e gudgeon pin -ole. draw bolt is acti3ated in t-e c-uc) w-ic- draws

t-e rod toward t-e c-uc) and -olds t-e piston in place.

1?


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$ig. urning

-e lat-e is t-en started and t-e mac-ining c5cle begun. -is c5cle is

programmed into t-e lat-e in a basic language called B'Code t-is code is not t-e

onl5 one a3ailable. B'Code -as basic commands to tell t-e lat-e to mo3e to

certain positions , ", co'ordinates, at particular spindle speeds e.g. S


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rilling

Drilling includes all oil -oles in places suc- as t-e gudgeon pin bosses and

oil ring groo3es. Slotting is w-ere slots are placed in t-e s)irt or in t-e oil ring

groo3e.

"al%e relie%ing

-is process is done on a mill and in3ol3es setting t-e mac-ine up for t-e

process, c-oosing t-e correct cutter and completing t-e ;ob. Since t-ere are so

man5 different t5pes of 3al3e relief2s it is impossible to -a3e a specialiEed

Mac-ine set up to do one ;ob.

:ran! relie%ing

Cran) relie3ing is carried out on a specialiEed mac-ine w-ic- scallops t-e

s)irt of t-e piston to t-e re4uired s-ape and dept- b5 using two opposed cutters

Placed on a common s-aft.

6rinding

$ig. Brinding

-is process in3ol3es t-e final siEe being mac-ined on t-e piston. -e

grinder mac-ines t-e s)irt of t-e piston onl5 and in t-e ma;orit5 of cases is cam

ground. Cam grinding ensures t-e piston will grow e3enl5 in t-e bore of t-e

engine.

1J


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perfectl5 round piston will e9pand une3enl5 during use because of t-e

une3en placement of material in t-e casting gudgeon pin bosses and ribbing used

for strengt-ening.

6roo%ing -

o locate t-e piston rings on t-e piston t-ere is need to formation of

groo3es. -ese groo3es are formed in two successi3e operations as roug- groo3ing

finis- groo3ing. -is groo3ing is of 1 to + or more in number depending on

design re4uirement of piston.

is$ing ?

fig. piston after dis-ing

Dis-ing is not-ing but to pro3ide t-e ca3it5 in uppermost rigid

portion of piston, w-ic- is useful to increase t-e displacement i.e. cc. suc- dis-ing

is also done in two stages.

;orm Turning -

Suc- operation is called cam or cop5 turning. In suc- operation a

masterpiece or cam made of wear less material follower made of fiber are used

connected wit- turning tool b5 spring connections.

Reaming

-is operation is done for lubrication purpose. Suc- t5pe of drilling is

perpendicular or inclined to t-e piston a9is depending on re4uirement of piston

design. -is operation is done as per re4uirement t-at some pistons re4uire a single

-ole w-ile some re4uire a double -oles parallel one below ot-er.

1G


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fig. #eaming

-e final mac-ining process for t-e piston is t-at of reaming. -is process

in3ol3es t-e piston being placed in a bat- of oil and reamed at different siEes to

reac- t-e final siEe re4uired. Since t-e pin boring process is onl5 roug- it is

necessar5 to ream t-e pin bore a number of times to ac-ie3e t-e surface finis- and

siEe re4uired.

:ir/lipping -

Circlipping is done for well fitting of t-e pin in bore. small tool is fitted

eccentricall5 on mac-ine spindle. 8-en mac-ine spindle rotates, t-e tool comes in

contact wit- t-e piston bore groo3e is made on bore. t t-is stage t-e piston is

cleaned, fitted wit- t-e appropriate gudgeon pin, stamped wit- t-e pistonsH o3ersiEe

and an5 ot-er mar)ings, and t-en sent to dispatc-. ctuall5 in t-is operation t-e

s-ape of cam is gi3en to wor). -is s-ape is li)e tapered pro3ides o3alit5. So

t-at to a3oid ;amming of piston inside t-e c5linder during e9pansion at time of

combustion. &ence in t-is s-ape t-e O.D. is ma9. t open end perpendicular to

pin bore -ole.

1>


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$ig.Circlipping

Burnis$ing -

It is super finis-ing operation. &ere t-e rollers mounted on

spindle s-afts are act t-e tool for finis-ing bore. Kerosene is used as coolant for

t-is operation. < or F microns material is remo3ed in t-is operation.

in Plating '

During t-is operation first anodiEing is done t-en after tin plating is

done. (5 performing t-is operation we pro3ide t-in plating of tin on piston as per

our re4uirement. =suall5 t-is t5pe of plating is done for KO%L, #OCK%,

B#%%/%S pistons. $or anodiEing t-e solution contains0

8ater Q sulp-uric acid Q o9alic acid

-is o9alic acid is used to maintain t-e temperature of solution. lso plating is

done for KO%L pistons in t-is acetic acid is used is solution.

%.g. pistons are coated wit- grap-ite powder t-en -eated.

Dispatc- fter cleaning, inspection, punc-ing t-e pac)ing dispatc-ing is done send

t-e piston storage.


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:(4 (T3


25/35


(u#@ero treatment8

-e subEero treatment is carried out at 'JA NC to 'GANC. Due to subEero

treatment, t-e retained austenite get transformed to Martensite. If t-e 4uenc-ed

steel is -eld at room temp for some time before cooling less austenite I transformed

to Martensite i.e. t-e austenite gets stabiliEed. -ere fore, t-e subEero treatment

s-ould be done immediatel5 after -ardening.

PIN M:*IN4 (*2P

fter doing -eat treatment on pin a lot of gudgeon pin stored for furt-er

mac-ining in pin storage department. Menon piston produces 1GJ no. of pins of

3arious companies including &ero &onda, KO%L, Le5land +AA, and ata indica

J?, %scort sF1


26/35


Centerless grinding is t-e met-od of grinding e9terior c5lindrical, tapered

formed surface on wor) pieces t-at are not -eld rotated on centers.

-e wor) is placed upon t-e wor) rest latter, toget-er wit- t-e

regulating w-eel is feed forward, forcing t-e wor) against t-e grinding w-eel. -e

a9ial mo3ement of t-e wor) past t-e grinding w-eel is obtained b5 tilting t-e

regulating w-eel at a slig-t angle from -oriEontal. n angular ad;ustment of A to G

or 1A degree is pro3ided in t-e mac-ine for t-is purpose.

%C&!ICL SP%CI$ICIO!S $O# C%!%#%L%SS B#I!DI!B

MC&I!%...

D%SC#IPIO! MOD%L SL'J?

Brinding range diameter


27/35


d3antages of Center less Brinding0

1. s a true floating condition e9ist during t-e grinding process less metal to be

remo3ed.


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Center less grinding


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Center less grinding Frd0

$ig. Centerless grinding

s t-e O.D. I.D. c-amfering is done gudgeon pin again tends to

center less grinding Frdtime to remo3e t-e material wit-in range of 1+ to +


30/35


Suc- a powder emits greenis-'5ellow lig-t under t-e influence of

ultra3iolet lig-t gi3es a better contrast to detect a flaw, since gudgeon pins are

placed on copper rod magnetiEed in circular met-od as current pass t-roug-

copper rod for a w-ile, according to s)in effect alternati3e current .C flow from

surface of t-e component. &ence magnetic pole is formed at t-e crac) or flaw

w-ic- causes t-e magnetic powder to concentrate on t-is area t-e flaw gets

easil5 detected. 8-en flow gets magnetiEed in circular manner t-en lengt-wise

crac)s are easil5 detected.

If an5 defects are obser3ed in pin surface t-en pins get re;ected,

ot-er pin passing successfull5 send for furt-er operation i.e. lapping:super

finis-ing.

Lapping:super finis-ing0

Lapping is t-e operation of siEing finis-ing a small diameter -ole

alread5 -ardened b5 remo3ing 3er5 small amount of material b5 using a lap. It is

abrading process t-at is used to produce geometricall5 true surface, correct minor

surface imperfections, impro3e dimensional accurac5 or pro3ide a close fit

between two contact surfaces.

In lapping mac-ine t-e laps practicall5 called ad stones are placed

in se4uence total G no laps are placed out of w-ic- last F laps are for finis-ing

purpose. Laps are placed in two saddles containing + laps eac-. %3er5 lap tends

pressure on t-e pin pneumaticall5. dial placed on t-e c5linders indicated

pressure in eac- c5linder in bar.Budgeon pins are placed wit- t-e -elp of rollers.

/ibration speed of laps acceleration of rollers maintained proportional to get

desired result. During lapping operation material up to A to ?T will remo3ed.

FA


31/35


$or super finis-ing oil in;ected on t-e gudgeon pi w-en t-e5 roll on t-e

rollers i.e.&onilo'>G1 during rec5cling oil it is filtered F times. Due to t-is oil we

get -ig- 4ualit5 of surface finis- on t-e pin. -is is t-e last operation on gudgeon

pin, after t-is operation pin are c-ec)ed under 3isual detection.

/isual inspection0

During 3isual detection pins are cleaned b5 using clot- detected

t-e defects li)e crac)s or dept- cuts on t-e surface of t-e gudgeon pin, if an5

defects are not obser3ed on t-e surface of t-e pin will get re;ected. If an5 defects

are not obser3ed on pin t-en pins sends for furt-er detection in standard room to

c-ec) dimensions of t-e pin are or not.

Standard room detection0

-ese air conditioning rooms speciall5 build for c-ec)ing

dimensions 3er5 accuratel5 on -ig-l5 calibrated gauges li)e surtronics FQ, air plug

gauge optical flat etc.

In surtronic FQ mac-ine surface finis- of pin will c-ec)ed, pin was

placed on t-e / bloc) and rotated in contact wit- t-e -oriEontal member w-ose

deflection are indicated on t-e dial, since less deflection results as desired finis-ing

is ac-ie3ed.

Outer diameter will c-ec)ed wit- t-e -elp of air plug gauge. Pin

passed t-roug- t-e circular plate as t-e pressure is applied on air 3al3e air get

e9perience bac) pressure -ence t-is c-ange will obser3ed on t-e dial connected to

air plug. $latness of t-e pin will c-ec)ed wit- t-e -elp of optical flat ultra3iolet

ra5s, in t-is met-od pin 3erticall5 placed on t-e optical flat plate ultra3iolet ra5s

passed from t-e area of contact t-e appearance of t-e ultra3iolet ra5 on screen will

indicated t-e actual surface of t-e pin. Since t-e speed am flatness measuring c-art

was pro3ided for anal5Eing t-e appearing s-ape on t-e screen during c-ec)ing.

F1


32/35


OOL #OOM OOL C#I(

In t-is department or s-op, all e4uipment re4uired for production on

mac-ine is stored. -e5 issued as per re4uirement. In t-is s-op, no. of e4uipment

li)e spigot, clamp, clamp rod, clamp pin, BO'!OBO gauges, center plate, ;ig

plate, fi9ture, mandrills, locators, 3arious roug-ing finis-ing tool groo3ing

forming tool. In t-is s-op Master cam re4uired for form turning also stored.

&oriEontal Spindle, #eciprocating able0'

Brinder0

-e spindle of mac-ine is -oriEontal and table reciprocates. -is grinder

is used to grind t-e s-an) of tool wit- respect to its tip Magnetic s-uc) is used to

-old tool on t-e mac-ine.

ool Cutter Brinder0

On t-is mac-ine operation li)e s-an) radius, nose radius of tool is

gi3en to tool. ool is fi9ed on fi9ture and fed it again, t-e cone s-aped grinding

w-eel. -e angle re4uire is gi3en b5 fi9ture plate to tool we get re4uired radius.

$or c-ec)ing form of tool li)e a form tool used form turning. -e magnified s-ape

is inspected on screen re4uired s-are is obtained. -e magnification obtained up

to 1A. (5 using optical profile because dis-ing operation depends upon form tool.

F


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6=LI" CO!#OL

MPL stri3es -ard to pursue Customer satisfaction t-roug- t-eir Process Control

and non destructi3e 6ualit5 c-ec)s as well as maintenance and impro3ement of t-e

6ualit5 S5stems. (5 use of rigorous 6ualit5 Standards and S5stems at 3arious

stages of manufacturing wit- t-e computeriEed On'Line *Statistical Process

Control. ec-ni4ues, MPL ensures t-at products w-ic- reac- t-e customers are

defect free and -a3e been produced wit- t-e -ig-est International 6ualitati3e

Standards.

MPL -as been awarded and Certified b5 t-eir 3alued Customers for t-eir

6ualit5 related acti3ities and -a3e been recogniEed as t-e most @6ualit5 Conscious

and Consistent7 Supplier. ll Plants of MPL -a3e been certified for @ISO:S

1>+>7


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-e list count of instruments is A.AA1mm 1 micron, w-ic- is 1:1A t-of

L.C. of dial gauge. -e instrument dial is generall5 related wit- fi9ed scale

respecti3e readings are c-ec)ed on dial gauge reading, t-e reading of instrument

c-ec)ed. Compared wit- dial gauge reading. -e dial gauge to be c-ec)ed is

wit-in tolerance t-en it accepted ot-erwise re;ected.

#oug-ness ester Mac-ine0'

-is is full5 automatic, surface te9ture measuring mac-ine. a5lor'

&obson, Limited ma)es t-is mac-ine. On t-is mac-ine, part to be c-ec)ed i.e. pin

is mounted. -e st5le w-ic- -a3ing sensor at its end is mounted. -e lengt- is

measured is feed to mac-ine. fter some period, w-en st5lus is mo3ed o3er t-e

Surface of t-e pin t-e result is directl5 printed out wit- grap-. 8e

directl5 get 3alues suc- as #a, #MS, CLS 3alue wit- t-eir respecti3e grap- from

w-ic- we compare standard result.

Profile te9ture testing mac-ine0

On t-is instrument, we c-ec) t-e piston for o3alit5, taper, its diameter

etc. it is 3er5 sensiti3e, w-ic- respond 4uic)l5 to c-ange. It is as simple dial

indicator. -e piston -eld between st5lus pointer measurements are ta)en.

Pin O.D. comparator0

s discussed earlier, t-e pins c-ec)ed b5 t-ese instruments also

taper, o3alit5 of pin is also c-ec)ed wit- t-e -elp of t-is de3ice. -e comparator

used for t-is is pneumatic comparator. -is ring gauge is used for t-is purpose.

-e tolerance is wit-in A.AA< mm. -e least count of mac-ine is A.AA1 mm. -e

-undred inspection is done on t-is mac-ine.

CO!CL=SIO!

F+


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s @Industrial Case stud57 is introduced in t-e s5llabus, its

good mo3e as it will -elp t-e students to interact wit- industr5. So t-at students

can get actual practical )nowledge rat-er t-an t-eoretical one.

In industr5 I -a3e studied 3arious mac-ines, t-eir operations,

t-eir wor)ing. It was a nice e9perience to stud5 t-e management s)ills. lso t-e

wor)ing aspects, problems occurring in industr5 -ow t-e5 are o3ercome.

I can conclude t-at t-e 3ocational training program pro3ides

opportunit5 to learn more more t-ings w-ic- can not be studied in boo)s.

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