Xem 1-11 trên 11 kết quả Pitch diameter
  • GLOSSARY OF SYMBOLS bG C d d0 dR D Db D0 D1 / hk ht L mG m0 mp nw nG Dedendum of gear teeth Center distance Worm pitch diameter Outside diameter of worm Root diameter of worm Pitch diameter of gear in central plane Base circle diameter Outside diameter of gear Throat diameter of gear Length of flat on outside diameter of worm Working depth of tooth Whole depth of tooth Lead of worm Gear ratio = NGINW Module, millimeters of pitch diameter per tooth (SI use) Number of teeth in contact Rotational speed of worm, r/min Rotational speed...

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  • CHAPTER 36 WORM GEARING K. S. Edwards, Ph.D. Professor of Mechanical Engineering University of Texas at El Paso El Paso, Texas 36.1 INTRODUCTION / 36.2 36.2 KINEMATICS / 36.3 36.3 VELOCITY AND FRICTION / 36.5 36.4 FORCE ANALYSIS / 36.5 36.5 STRENGTH AND POWER RATING / 36.9 36.6 HEAT DISSIPATION / 36.12 36.7 DESIGN STANDARDS / 36.13 36.8 DOUBLE-ENVELOPING GEAR SETS /36.18 REFERENCES / 36.22 ADDITIONAL REFERENCE / 36.22 GLOSSARY OF SYMBOLS bG C d d0 dR D Db D0 D1 / hk ht L mG m0 mp nw nG Dedendum of gear teeth Center distance Worm pitch diameter Outside diameter of worm Root...

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  • W.M. Berg manufactures several styles of gears. Each gear has and serves its own particular application. Listed below are brief descriptions and application notes for the variety of available styles. Further information can be obtained from numerous gear and mechanical design handbooks, or by contacting our engineering department Gear Types Spur Gears are the most recognized style of gear. Spur Gears are used exclusively to transmit rotary motion between parallel shafts, while maintaining uniform speed and torque.

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  • CONTENTS CONTENTS Chain Drives C H A P T E R n 759 Chain Drives 1. Introduction. 2. Advantages and Disadvantages of Chain Drive over Belt or Rope Drive. 3. Terms Used in Chain Drive. 4. Relation Between Pitch and Pitch Circle Diameter. 5. Velocity Ratio of Chain Drives. 6. Length of Chain and Centre Distance. 7. Classification of Chains. 8. Hoisting and Hauling Chains. 9. Conveyor Chains. 10. Power Transmitting Chains. 11. Characteristics of Roller Chains. 12. Factor of Safety for Chain Drives. 13. Per missible Speed of Smaller Sprocket. 14. Power Transmitted by Chains. 15.

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  • NOTATION BD C CD CCD D Dp G H HP Kf Kr L MHD MUTS n N TV1 TV2 Bottom diameter, in Center distance, in chain pitches Caliper diameter, in Chain clearance diameter, in Roller outside diameter, in Gauge pin diameter, in Maximum guide groove diameter, in Maximum chain height, in Horsepower Constant for link plate fatigue Constant for roller and bushing impact Chain length

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  • NOMENCLATURE A b Cp C8 di d2 e E F fb / M n P q r s t v z Cross section Width Angular factor Service factor Diameter of driving pulley Diameter of driven pulley Center distance Modulus of elasticity Force Bending frequency Datum length of flexible connector Torque Speed Power Mass per length Radius Belt thickness Pitch Velocity Number

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  • GLOSSARY OF SYMBOLS a a a A b b c C C d D D Dmax e E / /v Vehicle deceleration, ft/s2 (m/s2) Location of shoe pivot, in (m) Lever arm for larger band force, in (m) Area, in2 (m2) Percentage of grade Width of band, shoe, or web, in (m) Lever arm for smaller band force, in (m) Center of pressure Specific heat, Btu/(lbm • 0F) [J/(kg • 0C)] Inside disk diameter, in (m) Outside disk diameter, in (m) Pitch

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  • Chain Drives 1. Introduction. 2. Advantages and Disadvantages of Chain Drive over Belt or Rope Drive. 3. Terms Used in Chain Drive. 4. Relation Between Pitch and Pitch Circle Diameter. 5. Velocity Ratio of Chain Drives. 6. Length of Chain and Centre Distance. 7. Classification of Chains. 8. Hoisting and Hauling Chains. 9. Conveyor Chains. 10. Power Transmitting Chains. 11. Characteristics of Roller Chains. 12. Factor of Safety for Chain Drives. 13. Per missible Speed of Smaller Sprocket. 14. Power Transmitted by Chains. 15. Number of Teeth on the Smaller or Driving Sprocket or Pinion. 16.

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  • CHAPTER 32 CHAIN DRIVES John L. Wright General Product Manager Diamond Chain Company Indianapolis, Indiana 32.1 TYPES, USES, AND CHARACTERISTICS / 32.2 32.2 ROLLER CHAINS: NOMENCLATURE AND DIMENSIONS / 32.4 32.3 SELECTION OF ROLLER-CHAIN DRIVES / 32.7 32.4 LUBRICATION AND WEAR/32.14 32.5 ENGINEERING STEEL CHAINS: NOMENCLATURE AND DIMENSIONS / 32.18 32.6 SELECTION OF OFFSET-SIDEBAR-CHAIN DRIVES / 32.20 32.7 SILENT CHAINS: NOMENCLATURE AND DIMENSIONS / 32.25 32.8 SELECTION OF SILENT-CHAIN DRIVES / 32.28 REFERENCES / 32.

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  • CHAPTER 31 BELT DRIVES Wolfram Funk, Prof. Dr.-lng. Fachbereich Maschinenbau Fachgebiet Maschinenelemente und Getriebetechnik Universitat der Bundeswehr Hamburg Hamburg, Germany 31.1 31.2 31.3 31.4 31.5 31.6 GENERAL/31.2 FLAT-BELT DRIVE/31.14 V-BELT DRIVE/31.19 SYNCHRONOUS-BELT DRIVE / 31.25 OTHER BELT DRIVES / 31.35 COMPARISON OF BELT DRIVES / 31.

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  • V-Belt and Rope Drives 1. Introduction. 2. Types of V-belts and Pulleys. 3. Standard Pitch Lengths of V-belts. 4. Advantages and Disadvantages of V-belt Drive over Flat Belt Drive. 5. Ratio of Driving Tensions for V-belt. 6. V-flat Drives. 7. Rope Drives. 8. Fibre Ropes. 9. Advantages of Fibre Rope Drives. 10. Sheave for Fibre Ropes. 11. Ratio of Driving Tensions for Fibre Rope. 12. Wire Ropes. 13. Advantages of Wire Ropes. 14. Construction of Wire Ropes. 15. Classification of Wire Ropes. 16. Designation of Wire Ropes. 17. Properties of Wire Ropes. 18.

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