HMT PPT
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![Page 1: HMT PPT](https://reader035.fdocuments.net/reader035/viewer/2022062407/563db936550346aa9a9b1cd1/html5/thumbnails/1.jpg)
PROFESSIONAL TRAINING 1
AT
TRACTOR DIVISION
HINDUSTAN MACHINE TOOLS
Mithun Nehra Roll No-11001004043
B. Tech. Third Year (ME)
Department of Mechanical Engineering, DCR University of Science & Technology, Murthal
Submitted to :- Dr. R K Garg
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INTRODUCTION OF COMPANY
1. THE COMPANY WAS STARTED IN 1953 IN BANGALORE.
2. COMPANY CONVERTED INTO PUBLIC LIMITED COMPANY ON MAY 13, 1977.
3. HMT STARTED IN 1963 IN PINJORE.
4. THERE ARE TWO DIVISIONS OF HMT IN PINJORE:-
MACHINE TOOLS DIVISION
TRACTOR DIVISION
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PRODUCTS BY HMT TRACTOR
• HMT-2522
• HMT-3522
• HMT-4022
• HMT-4922
• HMT-5022
• HMT-6522
• HMT-7522
WATCHES
TOOLS
The first tractor units produced in HMT Pinjore were named `HMT-ZETRO’Initially Zetro tractors were produced in the unit with the power of 25 BHP
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HMT LAYOUTEN
TRY
GuardRoom
TrainingCentre
Boilers And
Condensers
New Heat
Treatmentsection
Tools Section
Light Machine
Shop
TractorWashingSection C
ante
en
FoundryShop
Heavy Machine Shop
TractorAssembl
y
Paint Section
Eng
ine S
hop
Old Heat
Treatment
Shop
STO
RE
New
Engin
e S
hop
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TRAINING SCHEDULE TRAINING CENTRE LIGHT MACHINE SHOP NEW ENGINE SHOP FOUNDRY TOOL ROOM ENGINE SHOP HEAT TREATMENT ENGINE ASSEMBLY AND TESTING TRACTOR ASSEMBLY AND TESTING
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TRAINING CENTRE
MILING SECTION
MIL
LIN
G
MA
CH
INES Horizontal
Milling Machine
Vertical Milling Machine
Universal Milling Machine
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TURNING SECTION
TURNING SECTION HAVE MAINLY LATHE MACHINES
Lathe Machines
Engine Lathe CNC Lathe Trainer
Wood Working
Lathe
Centre Lathe
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WHAT WE LEARNT IN TRAINING CENTRE :-
METRIC MICROMETER
VERNIER CALLIPER
Basics of machining like :- > Drilling > Boring > Cutting
Using of 1. Metric Micrometer (LC- 0.01mm) 2. Vernier Calliper (LC – 0.02mm)
Show basic models of :- 1. Engine Parts 2. Powertrain Parts 3. Braking and steering parts 4. Cross section of Full Assembled Tractor
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LIGHT MACHINE SHOP
IN THIS SECTION LIGHT PARTS OR SMALL PARTS OF TRACTORS ARE MACHINED SUCH AS :-
SPEED GEARS OF TRACTOR
SUN AND PLANET GEARS
CLUTCH SHAFT
SPLINED SHAFT
GEAR SHIFTING FORK
BEVEL PINION SHAFT
GEAR SHIFTING ROD
STEERING SHAFT
Spline Shaft Gear shifting Fork
Bevel Pinion Shaft
Gear shifting Rod
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DIFFERENT MACHINES USED IN LIGHT MACHINE SHOP ARE :-
Gleason
Gear shaping machine
Copying lathe
Cylindrical grinding machine
Broaching Machine
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SPLINE SHAFT PRODUCTION PROCEDURE :-
A shaft with longitudinal gear like ridges along its interior or exterior surface is called spline shaft. FunctionThe function of this shaft is to transmit the power from flywheel to the lay shaft Material used: Low carbon steel.
Process for Spline Shaft :-
Raw Material CNC facing turning , Hobbing
Gear hobbing against cutting
gear of 0.05 shaving allowance
HOB = 23
Gear tooth rounding , fitting
and washing
Inspection , Turning ,Bench drilling
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BEVEL PINION SHAFT PROCEDURE :-
It is used to transmit the power from gear box to differential. Material used: Low carbon steel.
Raw Material from vendor
Metal cutting > facing > centring
>turning on s-pilot machine
Gear hobbing > Washing > inspection
Work hardening > turning > grinding >
thread rolling > tempering
Shot blasting > washing > inspection
Process for bevel Pinion Shaft :-
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NEW ENGINE SHOPIN NEW ENGINE SHOP, MANUFACTURING OF THE ENGINE PARTS IS DONE. THERE ARE TWO MANUFACTURING LINES :-
CRANK CASE LINE
CYLINDER HEAD LINE
Parts machined in New Engine Shop are :- 1. Cylinder head. 2. Crank case.
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1. CYLINDER HEAD :-
Cylinder head contains the inlet valve, exhaust valve fuel injection valve. It is use to cover the cylinder and piston arrangement.
Material used - Cast Iron (CI)
Cylinder Head
Milling of front and bottom on vertical milling
machine
Milling of left and right side on
horizontal milling machine
Valve guide hole on boring machine
Drilling of fuel injection pump
>Reaming of valve guides
Washing and inspection
Process for Cylinder head Production :-
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2. CRANKCASE :-
It is the housing for the crank shaft. Material used:- Cast iron (CI).
Crankcase
Material from casting and removal of extra metal
Top face milling on vertical milling machine and
bottom on horizontal milling
machine
Drilling of guide holes > roughing
of liner bores
Drilling of oil filter holes , finishing on
boring machine
Washing and inspection
Process for Crankcase production :-
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FOUNDRY SHOPSTEPS OF FOUNDRY MECHANISATION :-
1. Sand preparation.2. Core making.3. Moulding , pouring shakeout.4. Melting.5. Cleaning.
CASTINGS IN FOUNDRY OF HMT :- Gear Box Cylinder Head Rear axle housing
Foundry
Painting & printing section
Testing lab and Fetling section
Melting and metal pouring
section
Core setting section
Sand plant System
Sand handling system
Mould making and handling
Core making and baking
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MACHINE AND FURNACE USED IN FOUNDRY :-
Shot Blasting Machine Induction Furnace
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STEPWISE PROCEDURE OF CASTING PROCESS IN FOUNDRY :-
Pattern making
Mould making
Metal pouring
Fettling process
Shot blastin
g
Cylinder Head pattern
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TOOL ROOM PARTS MANUFACTURING IN TOOL ROOM ARE :-
1. Jigs These are used to hold the jobs on machine2. Fixtures it hold as well as guide the process of machining
Jig Boring Machine
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ENGINE SHOPIN ENGINE SHOP THERE ARE TWO MANUFACTURING LINES :-
1. FOR CAM SHAFT
2. FOR CONNECTING ROD
PARTS MANUFACTURED IN ENGINE SHOP ARE :-a. Front & Rear coverb. Camshaft c. Connecting Rodd. Rocker arme. I.G. pinf. Bearing capsg. Oil panh. Tappet pini. Rear axle housing
Camshaft Connecting rod
Bearing cap Tappet pinRocker arm
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1. CAMSHAFT :-
A straight, gear-driven shaft that contains lobes used to operate the intake and exhaust valves of a reciprocating engine
Material used: - Alloy steel. Length cutting 327mm
Facing and
centring of shaft
Turning Straightening of
shaft
Bench drilling
of shaft
Key cutting
Fitting of shaft
Grinding for
smoothening
inspection
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2. CONNECTING ROD :-
The rod connects the crank shaft of a motor vehicle to the piston
Raw material Surface grinding
Chamfering & Stud holes
drilling
Surface grinding of
cap
Boring of big end & locking
slot cut
Boring of both ends on SPM
Brass bush inserted by hydraulic
press
Inspection
Process for Connecting Rod Production :-
Connecting Rod
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HEAT TREATMENTHERE THE COMPONENTS TO BE HEAT TREATED AND QUENCHED IN OIL
Heat Treatment Of CROWN WHEEL :-
Crown wheel
AnnealingHeated to 830-840 ̊̊̊̊c
Quenched in oil bath Washed
Inspection
Fettling is done for :- 1. Surface stress removal 2. Component Cleaning
Fettling is done by Shot Blasting Machine With small steel shots
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PROCESS FOR VARIOUS COMPONENTS IN SEALED QUENCHED FURNACE :-
Carburising
At 920̊̊̊c
Fro 2.5 to 5 hrs..
Diffusion
At 920̊
For 1.5 to 2 hrs..
Quenching
At 820̊
15 to 20̊ min
Tempering
at 150̊
For 1.2 to 2 hrs..
Case Depth
0̊.6 to 1.0̊ mm
Hardness Before =
60-64 hrc
After = 58-60 hrc
1. Gears
2. Shafts
Carburising
At 930̊̊̊c
Fro 5 to 7 hrs..
Diffusion
At 930̊
For 2 hrs..
Quenching
At 810̊
15 to 20̊ min
Tempering
at 150̊
For 1.5 to 2 hrs..
Case Depth
0̊.9 to 1.2 mm
Hardness Before =
60-64 hrc
After = 58-60 hrc
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3. Crown Wheel
Carburising
At 920̊̊̊c
Fro 3.5 to 5 hrs.
Diffusion
At 920̊
For 2 to 3 hrs.
Gas Cooling
At 760̊ to 820̊
For 1 to 2 hrs.
Case Depth
0̊.85 mm
4. Camshaft
Carburising
At 930̊̊̊c
Fro 8 to 12 hrs.
Diffusion
At 930̊
For 2 to 4 hrs.
Gas Cooling
At 760̊ to 820̊
For 2 hrs.
Case Depth
1.2 mm
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ENGINE ASSEMBLYIN THIS SHOP ALL THE ENGINE PARTS OBTAINED FROM THE PREVIOUS SHOPS ARE ASSEMBLED AS TO MAKE THE WHOLE ENGINE AND THEN IN THE TESTING SHOP THE ENGINES ARE TESTED FOR THEIR FITNESS AND GOODNESS FOR DIFFERENT TRACTOR PURPOSES.
ASSEMBLY PROCEDURE :-
Piston Assembly
Crankshaft Assembly
Cam shaft is fitted in crankcase
IPD shaft is fitted
Timing gear fitting
Piston Mounting
Lubrication Pump
assembly
Flywheel Assembly
Water pump fitting
Cylinder head & FIP
is fitted
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ENGINE TESTINGEngine Testing Parameters are :- Torque Produced RPM Achieved FUEL Consumption
Run Engine
Check Lubrication Of
rocker Arm
Check Rotation of Push rods
Loading Of Engine
Record Water temp. & oil pressure
Check & Record fuel time and
full load
Check and record
regulated rpm max. & min
Calculate total cycle time
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TRACTOR ASSEMBLY
STEPS IN TRACTOR ASSEMBLY :-GEAR BOX ASSEMBLYMTH (MAIN TRANSMISSION HOUSING)DISK BREAK ASSEMBLYREAR AXLE ASSEMBLYCHANNEL PLATE AND TROLLEY HOOK
MOUNTING ENGINE MOUNTING
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Gear Box Assembly :-
Gear Box Assembly
Lay Shaft
Splined Shaft
Reduction Shaft Clutch Bended
GearFront Cover
PTO Spline
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MT Housing Assembly
• Clean Housing• Mount
Differential kit & Hydraulic Pump
• Assemble Hand Brackets
• Assemble the Pump Shaft And PTO
• Assemble Top cover on gear box
Portal & Direct Axle Mounting
• Assemble differential shaft with two roller bearings
• A bull gear along spring tube
Rear Axle
• Assemble rear axle on MT Housing
• Assemble Brackets
• Assemble Lift • Fill Gear Box
housing with lubricating oil
• Assemble tailor,coupling 7 hinges
Engine Mounting
• Mount Engine on Gear box and MT Housing
Front Axle
• Assemble the front wheel hub, pivot , bush & bearings
• Assemble the front axle bracket
• Then assemble all the parts with tractor body
Steering & Brake Assembly
• Screw and nut type steering assembly is assembled
• Hydraulic Brake Assembly
• 1.Body Master Cylinder
Greasing Zone& Tyre Mounting
• Greasing is done to all parts
• After washing & painting radiator mount on tractor body
Other Parts Assembly :-
Tyre Mounting :-
• TOE in = 4mm• Front distance is constant and from back side distance is increased to 4mm
Alignment
• It provides good balancing of tractor• It prevents from wear and tear of tyres• It helps in steering system
Purpose Of Alignment
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THANK YOU