Why are Cycloidal Gears a Good Choice?

The high-precision micro cycloidal gearbox is a new micro precision cycloidal and spur gear reducer developed and manufactured by Dongguan Weitengstan in collaboration with technicians from Germany and Taiwan after years of research and development.

Similar to the RV gearbox used in robots, this gearbox also adopts a cycloidal structure. However, the high-precision micro cycloidal gearbox only uses a single-stage reduction structure, eliminating the need for a secondary planetary reduction. This design allows for a smaller, ultra-thin, lightweight gearbox with high rigidity, overload resistance, and high torque. It has excellent reduction performance, enabling smooth operation and precise positioning.

The integrated design allows for direct connection with the motor, achieving high precision, high rigidity, and durability in electromechanical integration. It is designed for applications that require high speed ratio, high geometric precision, low loss motion, high torque capacity, and high rigidity. The compact design (minimum outer diameter ≈ 40mm, currently the world's smallest precision cycloidal gearbox) allows it to be installed in limited spaces with low inertia.

The design of the high-precision micro cycloidal gearbox is based on a new reduction principle and a newly developed radial-axial output bearing, representing a new generation of power transmission systems. The newly developed transmission technology, combined with revolutionary innovations in structure, not only reduces the difficulty of manufacturing and assembly but also enables the design of ultra-high speed ratio transmission. Therefore, it can replace RV gearboxes and harmonic gearboxes directly in applications such as robot joints, rotating worktables, and various transportation systems.

1) The basic components and characteristics of the high-precision micro cycloidal gearbox are as follows:

1. Housing: It combines high-performance and precision radial-axial output bearings built into the gearbox.

2. Flange: The input and output flanges are fixed together by a pin shaft, rotating at the reduced speed.

3. Input shaft: The high-speed component of the reduction mechanism is a flange bearing, and the eccentric rotation of the shaft is supported by the bearing to drive the cycloidal gear.

4. Cycloidal gear: Nearly 50% of the synchronous meshing cycloidal gears can transmit very large torque and ensure the performance and precision of the gearbox.

2) Advantages of the high-precision micro cycloidal gearbox:

1. Micro-sized precision cycloidal structure: By adopting a differential reduction mechanism and thin cross-roller bearings, it achieves an ultra-flat shape, contributing to the compact size of the equipment. The combination of small size and unmatched performance parameters achieves the best balance of performance, price, and size (cost-effectiveness).

2. Excellent precision (transmission loss ≤ 1 arcmin): Through the multiple engagement of precision cycloidal gears and high-precision rollers, it achieves higher transmission accuracy while maintaining a small size and large speed ratio.

3. High rigidity: By improving the engagement dispersion, it enhances the load distribution and achieves high rigidity.

4. High overload capacity: While ensuring excellent parameters for overturning stiffness and torsional stiffness, it maintains trouble-free operation with exceptionally low noise and vibration. With integrated axial-radial cross-roller bearings, the gearbox has high load capacity and overload capacity, ensuring various temperature range applications for users.

5. Easy motor installation: With a design for electromechanical integration, it can be directly connected to any brand of motor without the need for additional devices.

6. Maintenance-free: Sealed with grease, it achieves maintenance-free operation. No lubrication is required, and there are no installation direction restrictions.7. Stable performance: The manufacturing process of high-wear-resistant materials and high-precision components is certified by the ISO9000 quality system, providing assurance for the reliable operation of the gearbox.