By using a flexible ring-gear the planetary gears achieve a backlash of < 1 minute of arc without requiring an additional backlash adjustment mechanism. Until now highly accurate gears and / or an additional adjustment mechanism were necessary to minimize backlash. Tight gear engagement for conventional planetary gears leads to torque ripple and a worsening of noise and wear characteristics. To avoid this problem the new HPG series features a flexible internally toothed ring-gear, thereby exploiting many years of Harmonic Drive experience with thin-walled components. The flexible ring-gear ensures that backlash is minimized and that all planet gears share the load equally.
Advantages:
- Backlash less than 1 minute of arc
- High moment stiffness
- High efficiency
- Repeatability better than 20 seconds of arc
- Easy motor assembly
Product Documentation |
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