Hard Tooth Flank Helical Gear Description
| Hard Tooth Flank Helical Gear Basic Data | |
|---|---|
| Gear Tooth Shape | involute |
| Gear Material | 17CrNiMo6 |
| Gear Process | forging, lathing, hobbing, carburizing, external grinding, tooth grinding |
| Pressure Angle | 20° |
| Quality level | DIN 3962 Class 6 |
| Gear Type | Mn=4, Z=132, β=18° |
CAPABILITIES OF GEAR/ SPLINE
INTERNAL GEARS AND INTERNAL SPLINES |
|||
|---|---|---|---|
| MILLING | SHAPING | TOOTH GRINDING | |
| Maximum O.D. | 2500 mm | 2500 mm | 2500 mm |
| Minimum I.D. | 650 mm | 50 mm | 100 mm |
| Maximum Face Width | 500 mm | 500 mm | 500 mm |
| Maximum Diametral Pitch | D.P. 1 | D.P. 1 | DP 0.5 |
| Maximum Module | 26 mm | 26 mm | 45 mm |
| AGMA Level/ DIN Level | DIN Class 8 | DIN Class 8 | DIN Class 4 |
| Tooth Surface Finishing | Ra 3.2 | Ra 3.2 | Ra 0.6 |
| Maximum Helix Angle | ±22.5° | ±22.5° | ±45° |
EXTERNAL GEARS AND EXTERNAL SPLINES |
|||
| HOBBING | MILLING | TOOTH GRINDING | |
| Maximum O.D. | 1250 mm | 2500 mm | 2500 mm |
| Minimum O.D. | 20 mm | 200 mm | 20 mm |
| Maximum Face Width | 500 mm | 500 mm | 1480 mm |
| Maximum Diametral Pitch | D.P. 1 | D.P. 1 | DP 0.5 |
| Maximum Module | 26 mm | 26 mm | 45 mm |
| AGMA Level/ DIN Level | DIN Class 8 | DIN Class 8 | DIN Class 4 |
| Tooth Surface Finishing | Ra 3.2 | Ra 3.2 | Ra 0.6 |
| Maximum Helix Angle | ±45° | ±45° | ±45° |
According to the failure form of gear transmission. The basic requirements for the material properties of gears are that the tooth surface is complex. And the tooth center is challenging. According to the above conditions, the materials of gear designing: forged steel, cast steel, cast iron, and metallic materials. Forged steel is the most commonly material in gear design. The cast steel is frequently used for giant gears. The cast iron plant is used in situations where the operation is stable, the speed is low, and the power is insignificant.
The non-metallic gears can reduce noise, which is often working in high speed, light load, and low progress. When designing the structure of the gear. We must comprehensively consider factors such as the gear’s geometric size, blank, material, processing technology, use requirements, and economic factors. Usually, the appropriate structural form is according to the diameter of the gear, and then the structural design is basing on empirical data.
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