ELEMENTS OF METRIC GEAR TECHNOLOGY
Table of Contents
| Page | ||||
| SECTION 1 | INTRODUCTION TO METRIC GEARS | 329 | ||
| 1.1 | Comparison Of Metric Gears With American Inch Gears | 329 | ||
| 1.1.1 1.1.2 1.1.3 |
Comparison
of Basic Racks Metric ISO Basic Rack Comparison of Gear Calculation Equations |
329 329 330 |
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| 1.2 | Metric Standards Worldwide | 330 | ||
| 1.2.1 1.2.2 |
ISO
Standards Foreign Metric Standards |
330 330 |
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| 1.3 | Japanese Metric Standards In This Text | 330 | ||
| 1.3.1 1.3.2 1.3.3 1.3.4 |
Application
of JIS Standards Symbols Terminology Conversion |
330 333 334 335 |
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| SECTION 2 | INTRODUCTION TO GEAR TECHNOLOGY | 335 | ||
| 2.1 2.2 2.3 2.4 2.5 2.6 2.7 |
Basic
Geometry Of Spur Gears The Law Of Gearing The Involute Curve Pitch Circles Pitch And Module Module Sizes And Standards Gear Types And Axial Arrangements |
336 336 336 337 337 337 339 |
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| 2.7.1 2.7.2 2.7.3 2.7.4 |
Parallel
Axes Gears Intersecting Axes Gears Nonparallel and Nonintersecting Axes Gears Other Special Gears |
340 340 340 341 |
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| SECTION 3 | DETAILS OF INVOLUTE GEARING | 341 | ||
| 3.1 3.2 |
Pressure
Angle Proper Meshing And Contact Ratio |
341 341 |
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| 3.2.1 | Contact Ratio | 342 | ||
| 3.3 | The Involute Function | 342 | ||
| SECTION 4 | SPUR GEAR CALCULATIONS | 342 | ||
| 4.1 4.2 4.3 4.4 4.5 4.6 4.7 |
Standard
Spur Gear The Generating Of A Spur Gear Undercutting Enlarged Pinions Profile Shifting Profile Shifted Spur Gear Rack And Spur Gear |
342 343 343 344 344 345 346 |
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| SECTION 5 | INTERNAL GEARS | 346 | ||
| 5.1 5.2 5.3 |
Internal
Gear Calculations Interference In Internal Gears Internal Gear With Small Differences In Numbers Of Teeth |
346 347 348 |
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| SECTION 6 | HELICAL GEARS | 349 | ||
| 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 |
Generation
Of The Helical Tooth Fundamentals Of Helical Teeth Equivalent Spur Gear Helical Gear Pressure Angle Importance Of Normal Plane Geometry Helical Tooth Proportions Parallel Shaft Helical Gear Meshes Helical Gear Contact Ratio Design Considerations |
349 349 350 350 350 350 350 351 351 |
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| 6.9.1 6.9.2 |
Involute
Interference Normal vs. Radial Module (Pitch) |
351 351 |
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| 6.10 | Helical Gear Calculations | 351 | ||
| 6.10.1 6.10.2 6.10.3 6.10.4 |
Normal System
Helical Gear Radial System Helical Gear Sunderland Double Helical Gear Helical Rack |
351 352 352 352 |
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| SECTION 7 | SCREW GEAR OR CROSSED HELICAL GEAR MESHES | 354 | ||
| 7.1 | Features | 354 | ||
| 7.1.1 7.1.2 7.1.3 7.1.4 |
Helix Angle
and Hands Module Center Distance Velocity Ratio |
354 354 354 354 |
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325