Key Characteristics & Advantages
- Structure: Comprises a first-stage planetary gear and a second-stage cycloidal pinwheel drive.
- Performance: Features high reduction ratios, high shock resistance, and high torsional stiffness.
- Precision: Offers superior motion accuracy, making it ideal for the first four joints of industrial robots (up to 20kg+ payloads).
- Types: Available in E Series (solid-shaft) and C Series (hollow-shaft) configurations.
Common Applications
- Industrial Robots: Essential for articulated arms, especially in joints 1–4.
- Automation: Used in rotary tables, CNC machines, and medical testing equipment.
- Heavy Duty: Preferred over harmonic drives for heavy-load, high-rigidity requirements.
Components & Working Principle
- Input: A motor drives a central pinion (sun gear).
- Stage 1: Planetary gears mesh with the sun gear and drive crankshafts.
- Stage 2: The crankshafts induce eccentric motion in cycloidal discs, causing them to roll along an outer casing.
- Output: The cycloidal discs transmit low-speed, high-torque motion to the output flange.
The "RV" refers to the rotary vector, representing the orbiting motion of the eccentrically mounted crankshafts.
