ppt for mechanical engineering.

1. Summer Training
Project Report
2014

2. SUMMER TRAINING PRESENTATION
ON
“GEAR MANUFACTURING TECHNOLOGY”
BY-
INDRESH SINGH

3. CONTENTS
 ABOUT THE COMPANY
 FACLITIES AVAILABLE IN THE COMPANY
 OUTLINE OF PROCESS AND EQUIPMENTS
 CLASSIFICATION OF GEARS

4. ABOUT THE COMPANY
“HI-TECH GEARS LTD.”
 ESTABLISHED IN 2001.
 JOINT VENTURE COMPANY OF GETRAG GEARS,USA & HITECH GEARS LTD,INDIA.
 50:50 PARTNERSHIP OF GETRAG GEARS,USA & HITECH GEARS LTD,INDIA.
 ANNUAL TURNOVER OF HITECH GROUP IS 600 CRORE.
 FOREIGN CUSTOMERS INCLUDES US,AUSTRALIA ,JAPAN,GERMANY,BRAZIL,UK.
 INDIAN CUSTOMERS ARE HERO MOTO CORP LTD.,TATA CUMMINS,AVTEC NEW
HOLLAND TRACTORS LTD.,ROBERT BOSCH.
 TOTAL SIX PLANTS OF HITECH GROUP IN INDIA & TOTAL EMPLOYEES ARE
ALMOST 3500 NOS.
 MANUFACTURES TWO & FOUR WHEELER TRANSMISSION SHAFTS & GEARS.

5. FACILITIES IN
“HITECH GEARS LTD.”,BHIWADI
FACILITIES AVAILABLE IN THE COMPANY FOR GEAR FORGING & MACHINING:-
1.HOT FORGING PRESSES – 6 NOS.
2.COLD FORGING PRESSES – 6 NOS.
3.CNC TURNING MACHINES – 102 NOS.
4.VMC MACHINES – 20 NOS.
5.GEAR HOBBING MACHINES – 30 NOS.
6.GEAR SHAVING MACHINES – 30 NOS.
7.GEAR SHAPPERS – 6 NOS.
8.BROACHING MACHINES – 915 NOS.

6. 9.BORE GRINDING MACHINES - 5 NOS.
10.SEALED QUENCH FURNACES – 16 NOS.
11.SHOT BLASTING MACHINES – 3 NOS.
12.FULLY EQUIPPED STANDARD ROOM & METALLURGICAL LAB.

7. 2. Outline of Process and equipment
HOBBING
BOP
INSPECTION
HARD TURNING/ INTERNAL
GRINDING
DISPATCH
TOOTH CHAMFERING SHAVING
BROACHINGDRILLINGPUNCHINGHEAT TREATMENT

8. 1.RAW MATERIAL
The metallic gears with cut teeth are commercially obtained in Cast
Iron, Steel and Bronze.
 CAST IRON-
 manufacturing of gears due to its good wearing properties.
 ease of producing complicated shapes by casting method.
 employed where smooth action is not important.
 STEEL-
 Used for high strength gears.
 steel gears are usually heat treated in order to combine properly
the toughness and tooth hardness.
 BRONZE-
 reduce wear of the gears which will be excessive with Cast iron or
steel.

9. The raw material for manufacturing gears in “HITECH GEARS LTD. BHIWADI”
are usually steel bars & are supplied by ‘MUKUND STEELS’ & ‘VARDHMAN STEELS’
in bhiwadi itself.

10. 2.HOT FORGING BY PRESS-
 involves the shaping of metal using continuous compressive forces slowly.
 The process starts by heating the bar to 1,200 to 1,300 °C using high-power
induction coils. It is then descaled with rollers, sheared into blanks, and
transferred through several successive forming stages, during which it is
upset, preformed, final forged.
3.COLD FORGING BY PRESS-
 Cold working of Metal at room temp.
 develop strength & hardness in a component, have a bright & clean finish &
eliminate forging scales.

11. 4.HOBBING-
 Is a machining process for making gears.
 Process Progressively cuts the teeths in the gear by using a cutting tool
known as hob.
5.TOOTH CHAMFERING-

12. 6.GEAR SHAVING-
 Is a technique for generating improved tooth shape in gears of involute
design.
 Gear shaving originated as a means for avoiding undesirable undercutting of
the root of the tooth in gears with small numbers of teeth (caused by
imperfections in the tool).
 Gear shaving may be used to improve the quality of meshing between two
gears or between a gear and a rack.

13. 7.BROACHING-
 is a machining process that uses a toothed tool, called a broach, to remove
material.
 is used when precision machining is required, especially for odd shapes.
- a broached workpiece

14. 8.DRILLING IN GEARS-
9.PUNCHING-
 is a metal forming process that uses a punch press to force a tool, called
a punch, through the workpiece to create a hole.

15. 10.HARD TURNING /INTERNAL GRINDING-

16. 11.INSPECTION-
 Fully equipped standard Room for gear parameter inspection.
 Fully equipped metallurgical lab for hardness & microstructure
inspection.
12.DISPATCH

17. 4.CLASSIFICATION OF GEARS-
1.According to the position of axes of the shaft:- The axes of the two shafts
between which the motion is to be transmitted, may be:
 Parallel
 Intersecting
 Non Intersecting and Non Parallel
2.According to the peripheral velocity of gears:-The gears according to the
peripheral velocity of Gears may be classified as:
 Low velocity
 Medium Velocity
 High Velocity

18. 3.According to the type of gearing:- According to the type of Gearing, the
gears can be classified as:-
a.External gearing
b.internal gearing
c.Rack and pinion
4.According to the position of teeth on gear surface:- The teeth on Gear
surface may be:
a.Straight
b.Inclined
c.Curved

19. THANK YOU