Involute Spline Design and Machining Guide
Covers involute spline design, parameters like module 0.5~8mm and pressure angle 30°/37.5°/45°, plus rolling, milling, grinding and broaching processes.
Involute Spline Overview#
Involute splines offer advantages such as self-centering, uniform load distribution, and high strength, and are widely used in automotive transmissions, drive shafts for construction machinery, and other applications.
Main Parameters#
| Parameter | Description | Common Values |
|---|---|---|
| Module m | Tooth profile size | 0.5~8mm |
| Number of teeth z | Number of spline teeth | 6~60 |
| Pressure angle α | Tooth profile angle | 30°/37.5°/45° |
| Tolerance class | Accuracy | 4H~7H / 4h~7h |
Machining Process Comparison#
| Process | Accuracy | Efficiency | Cost | Applicable Batch Size |
|---|---|---|---|---|
| Spline rolling | Grade 6~7 | High | Low | Large batch |
| Spline milling | Grade 5~6 | Medium | Medium | Small and medium batch |
| Spline grinding | Grade 3~4 | Low | High | High precision |
| Broaching (internal spline) | Grade 6~7 | High | Medium | Large batch |
Geyang Transmission can machine various involute spline shafts with module 0.5~8mm and maximum length 1000mm.