SUMMER TRAINING PRESENTATION ON GEAR MANUFACTURING TECHNOLOGY

Summer Training Project Report 2014

SUMMER TRAINING PRESENTATION

ON

GEAR MANUFACTURING TECHNOLOGY

BY- INDRESH SINGH

CONTENTS

ABOUT THE COMPANYFACLITIES AVAILABLE IN THE COMPANYOUTLINE OF PROCESS AND EQUIPMENTSCLASSIFICATION OF GEARS

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.

FACILITIES IN

HITECH GEARS LTD.,BHIWADIFACILITIES 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.

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.

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.

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.

2.HOT FORGING BY PRESS-involves the shaping of metal using continuous compressive forces slowly.The process starts by heating the bar to 1,200to 1,300C 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.

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-

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.

7.BROACHING-is amachiningprocess that uses a toothed tool, called abroach, to remove material.is used when precision machining is required, especially for odd shapes.

- a broached workpiece

8.DRILLING IN GEARS-9.PUNCHING-is ametal formingprocess that uses apunch pressto force a tool, called apunch, through the workpiece to create a hole.

10.HARD TURNING /INTERNAL GRINDING-

11.INSPECTION-

Fully equipped standard Room for gear parameter inspection.Fully equipped metallurgical lab for hardness & microstructure inspection.

12.DISPATCH

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:ParallelIntersectingNon 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 velocityMedium VelocityHigh Velocity

3.According to the type of gearing:- According to the type of Gearing, the gears can be classified as:-a.External gearingb.internal gearingc.Rack and pinion

4.According to the position of teeth on gear surface:- The teeth on Gear surface may be:a.Straightb.Inclinedc.Curved

THANK YOU