Modern Gear Production

Modern Gear Production

1st Edition - January 1, 1970

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  • Author: H J Watson
  • eBook ISBN: 9781483157344

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Modern Gear Production focuses on the processes and methods in gear making. The book first gives information on the history of gear making and types of gears. Topics such as the classification of gears based on the disposition of their shafts; shafts lying in the same plane with axes intersecting; and shafts lying in parallel planes but with axes inclined to one another are then discussed. The text describes gear groups, tooth forms, and gear materials. Heat treatment of steels, casehardening, nitriding, induction hardening, sulfinuzing, and flame hardening are explained. The book takes a look at blank manufacture, gear milling, and gear shaping and planning. The text further examines gear hobbing. Topics include precision of hobbing machines, worm-wheel hobbing, hob setting, control of accuracy of gears, and hobbing gears for general purposes. The different kinds of hobs, profile grinding, and shaving and lapping are also discussed. The book also focuses on other manufacturing methods, such as thread whirling, broaching gear teeth, tooth rounding, work hardening, and electrochemical machining. The text is a vital source of data for readers interested in gear making.

Table of Contents

  • Introduction


    1. Brief History of Gear Making

    2. Types of Gear

    2.1. Classification of Gears Based on The Disposition of Their Shafts

    2.1.1. Shafts Lying in Same Plane and Parallel—Spur Gears

    2.1.2. Helical Gears

    2.2. Shafts Lying in Same Plane with Axes Intersecting—Bevel Gears

    2.2.1. Straight Bevel Gears

    2.2.2. Spiral Bevel Gears

    2.2.3. Conical Bevel Gears

    2.3. Shafts Lying in Parallel Planes But with Axes Inclined to One Another

    2.3.1. Hypoid Gears

    2.3.2. Spiroid Gears

    2.3.3. Worm Gears

    2.3.4. Crossed Helical Gears

    3. Gear Groups and Tooth Forms

    3.1. Grouping of Gears

    3.1.1. Cylindrical Gears

    3.1.2. Conical Gears

    3.1.3. Double-Enveloping and Parallel Worm Gears

    3.2. Tooth Forms

    3.2.1. Cycloidal Teeth

    3.2.2. Teeth Based on Circular Arcs

    3.2.2(A). Circular Arc Pump Rotors

    3.2.2(B). Wildhaber-Novikov Gears

    3.2.2(C). Arc-Contact and Niemann Worm Gears

    3.2.3. Enveloping Gears

    3.2.3(A). Vickers-Bostock-Bramley Enveloping Gears

    3.2.3(B). Double-Enveloping Worm Gears

    3.2.4. Involute Teeth

    4. Materials

    4.1. Gear Materials

    4.1.1. Cast Iron

    4.1.2. Inoculated Irons

    4.1.3. Spheroidal Graphite Or Nodular Cast Iron

    4.1.4. Alloy Cast Irons

    4.2. Steels

    4.2.1. Carbon Steels

    4.2.2. Forged Carbon Steels

    4.2.3. Cast Carbon Steels

    4.3.1. Forged Alloy Steels

    4.3.2. Through-Hardening Alloy Steels

    4.3.3. Casehardening Alloy Steels

    4.3.4. Cast Alloy Steels

    4.4.Non-Ferrous Metals

    4.4.1. Copper Alloys

    4.4.2. Aluminum Alloys

    4.5. Plastics

    5. Heat Treatment

    5.1. Heat Treatment of Steels

    5.1.1. Normalizing

    5.2. Direct Or Through-Hardened Steels

    5.3. Casehardening

    5.3.1. Work Support During Casehardening

    5.3.2. Preventing Carbon Penetration

    5.3.3. Pack Carburizing

    5.3.4. Gas Carburizing

    5.3.5. Scale Prevention

    5.3.6. Casehardening Large Gears

    5.3.7. Salt-Bath Casehardening

    5.4. Nitriding

    5.4.1. Gas Nitriding

    5.4.2. Salt-Bath Nitriding

    5.5. Induction Hardening

    5.5.1. Power Generators

    5.5.2. Inductors

    5.5.3. Induction Hardening Machines For Large Gears

    5.5.4. Induction Hardening Machines For Small Gears

    5.6. Flame Hardening

    5.6.1. Flank Hardening

    5.6.2. Spin Hardening

    5.7. Sulfinuzing

    6. Methods of Manufacture

    6.1. Casting

    6.1.1. Investment Casting

    6.1.2. Die Casting

    6.1.3. Shell Molding

    6.1.4. Centrifugal Casting of Bronze

    6.1.5. Centrifugal Casting of Steel

    6.2. Powder Metallurgy Applied to Gear Production

    7. Blank Manufacture

    7.1. Blank Manufacture

    7.1.1. Helical and Spur Gears

    7.1.2. Solid Forgings

    7.1.3. Wheel Rims

    7.2. Welded Wheels

    7.2.1. Electron Beam Welding

    7.3. Cast Steel Wheel Blanks

    7.4.1. Turning Blanks For Cylindrical Gears

    7.4.2. Bevel Gear Blanks

    7.5.1. Worm-Wheel Blank Manufacture

    7.5.2. Cast-On Rims

    7.5.3. Small Worm-Wheel Blanks

    7.6.1. Lathes For Blank Manufacture

    7.6.2. Numerical Control

    8. Gear Milling

    8.1. Milling

    8.1.1. Circular Milling Cutters

    8.1.2. End Milling

    8.2.1. Spiral Bevel Gear Production— The Gleason Process

    8.2.2. Oerlikon Spiromatic Spiral Bevel Gear Milling Process

    8.2.3. Fiat Spiral Bevel Gear Milling Process

    8.2.4. Klingelnberg Bevel Gear Cutting Process

    8.2.5. Gleason Epicurv Method of Bevel Gear Cutting

    8.2.6. Hypoid Gear Cutting

    9. Gear Planing and Shaping

    9.1. Gear Planing

    9.1.1. The Sunderland Process

    9.1.2. The Maag Planing Process

    9.2. Straight Bevel Gear Cutting

    9.2.1. Straight Bevel Gear Planing

    9.2.2. Heidenreich and Harbeck Method

    9.2.3. Gleason Coniflex Method

    9.2.4. Gleason Revacycle Method

    9.3. Gear Shaping

    9.3.1. The Fellows Process

    9.3.2. The Sykes Process

    9.3.3. Gear Shaper Cutters

    9.4. Internal Gear Cutting

    10. Gear Hobbing

    10.1. Hobbing

    10.1.1. The Conventional Hobbing Process

    10.1.2. Creep Hobbing Machines

    10.2. Precision Hobbing Machines

    10.2.1. Precision Gear Hobbing

    10.2.2. Hobbing Precision Pinions

    10.3. Control of Accuracy of Gears

    10.4. Hobbing Gears For General Purposes

    10.5. Hob Setting

    10.6.1. High-Speed Hobbing Machines

    10.6.2. Automatic Control of Hobbing Machines

    10.7. Worm-Wheel Hobbing

    10.8. Klingelnberg Bevel Gear Hobbing

    11. Gear Hobs

    11.1. Gear Hobs

    11.1.1. Materials

    11.1.2. Design

    11.1.3. Manufacture

    11.1.4. Heat Treatment

    11.1.5. Finishing Processes

    11.2. Multiple-Start Hobs

    11.3. The Klingelnberg Roughing Hob

    11.4. Worm-Wheel Hobs

    11.4.1. Serrated Hobs

    11.4.2. Hobs For Double-Enveloping Worm Gears

    11.4.3. Fly Hobs

    11.5. Protuberance Hobs

    12. Profile Grinding

    2.1. Gear Profile Grinding

    12.1.1. The Maag Gear Grinding Process

    12.1.2. The Reishauer Method of Gear Grinding

    12.1.3. The Niles Method of Gear Grinding

    12.2. Form Grinding

    12.2.1. The Orcutt Method of Gear Grinding

    12.3. Worm Grinding

    13. Shaving and Lapping

    13.1. Gear Shaving

    13.1.1. Worm-Wheel Shaving

    13.1.2. Crossed-Axis Shaving

    13.1.3. Shaving Cutters

    13.1.4. Crossed-Axis Angle

    13.1.5. Application of Load

    13.1.6. Shaving of Larger Gears

    13.2. The Fellows Fini-Shear Process

    13.3. Lapping

    13.3.1. Lapping Bevel and Hypoid Gears

    13.3.2. The Mechanical Lapping Process

    13.3.3. Lapping Spur and Helical Gears

    13.3.4. Gears Lapped in Their Cases

    13.4. Running-In Materials

    13.5. Gear Honing

    14. Other Manufacturing Method

    14.1. Thread Whirling

    14.2. Gear Rolling

    14.2.1. Cold Rolling

    14.2.2. Hot Rolling

    14.2.3. Cold Extrusion of Gears

    14.2.4. Hot Forging of Gears

    14.3. Broaching Gear Teeth

    14.4. Tooth Rounding

    14.5. Electrochemical Machining

    14.6. Work Hardening

    14.6.1. Shot Peening

    14.6.2. Fillet Rolling

    15. Surface Finishing Processes

    15.1. Vapour Blasting

    15.2. Electrochemical and Chemical Finishing

    15.3. Gear Surface Treatments

    15.3.1. Phosphating

    15.3.2. Molybdenum Disulphide and Graphite

    15.4. Electroplating

    15.4.1. Hardfacing

    15.5. Metal Spraying

    16. Accuracy, Quality and Inspection of Gear-Making Machines

    16.1. Accuracy of Gear Generating Machines

    16.1.1. Machine Table and Bed

    16.1.2. Truth of The Column in Hobbing and Grinding Machines

    16.1.3. Master Worms

    16.1.4. Feed Screw Accuracy

    16.1.5. Hob Saddle

    16.1.6. Hob Spindle and Hob Arbor

    16.1.7. Hob Spindle Drive

    16.1.8. Table Bearings

    16.1.9. Thermal Equilibrium

    16.2. Automatic Correcting Devices

    16.2.1. Temac System of Measurement and Correction

    16.2.2. Inductosyn System of Correction

    16.2.3. The National Engineering Laboratory Portable Grating Method of Measuring Transmission Errors

    16.2.4. Seismic Method of Error Measurement

    16.3. Accuracy of Index Plates

    16.4. Foundations for Hobbing Machines

    16.4.1. Foundations for Other Gearmaking Machines

    16.5. General Comments on Gearcutting-Machine Accuracy

    17. Measurement of Gear Accuracy

    17.1. Accuracy of Gears

    17.1.1. Measurement of Gear Blanks

    17.1.2. Setting Gear Blanks and Tools in Gear-Cutting Machines

    17.2. Measurement of Pitch Errors

    17.2.1. Manually Operated Pitch-Measuring Instruments

    17.2.2. Cumulative Pitch Measurement

    17.2.3. Adjacent Pitch Measurement

    17.2.4. Base Pitch Measurement

    17.2.5. Automatic Pitch-Measuring Instruments

    17.3. Double Flank Testing Fixture

    17.4. Helix Modification and Measurement

    17.5. Profile Measurement

    17.5.1. Profile Measurement By Coordinates

    17.6. Determination of Undulations

    17.7. Phasing Errors in Double Helical Gears

    17.8. Measurement of Journal Roundness

    17.9. Inspection Methods

    17.10. Measurement of Surface Texture

    17.11. Accuracy of Meshing


    British Standard Specifications


Product details

  • No. of pages: 376
  • Language: English
  • Copyright: © Pergamon 1970
  • Published: January 1, 1970
  • Imprint: Pergamon
  • eBook ISBN: 9781483157344

About the Author

H J Watson

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