TD140 Series High Precision Planetary Gearbox Helical Gear Reducer

Overview

TD140 Series High Precision Planetary Gearbox Helical Gear Reducer, also known as servo motor planetary gearbox and low backlash planetary gearbox, is a type of gearbox used to reduce speed and increase torque in a wide range of industrial applications. The gearbox utilizes planetary gear technology to achieve high precision and low backlash performance.

Basic Construction

The basic construction of the high precision planetary gearbox consists of the following components:

• Sun Gear: Positioned at the center of the gearbox, the sun gear is usually connected to the input shaft or fixed to the housing as a stationary component.
• Planet Gears: Positioned around the sun gear, the planet gears rotate and are supported by the planet carrier to maintain their relative positions. Each planet gear simultaneously meshes with the sun gear and the ring gear to distribute the load.
• Planet Carrier: The planet carrier is a structure with multiple planet gear shaft holes that supports the planet gears and allows them to rotate relative to the sun gear. The planet carrier can serve as an output element or be connected to another shaft to transmit or receive torque.
• Ring Gear/Annulus: The ring gear is a large diameter circular gear fixed inside the housing with teeth on both the inside and outside surfaces that mesh with the planet gears. In some applications, the ring gear can also serve as an input or output end.
• Bearings and Shaft System: Bearings support the input shaft, output shaft, and planet carrier to ensure stable rotation and smooth operation between components.
• Housing: The housing is a sturdy structure that encloses all internal components, provides stable support for the gears, protects the interior from external impurities, and may include cooling or lubrication systems.
• Shafts and Keys: The input and output shafts are connected to the sun gear or the planet carrier via keys to transmit power, ensuring accurate torque transmission and axial positioning.
• Seals: Seals prevent lubricating oil leakage and contamination from entering the gearbox to ensure internal cleanliness and good lubrication status.

Working Principle

The working principle of the high precision planetary gearbox can be summarized as follows:

1. Torque transmission and amplification: When power is transmitted from the input shaft to the sun gear, the sun gear begins to rotate, and the planet gears mesh with the sun gear and the ring gear to rotate and revolve. Due to the joint action of multiple sets of planet gears, the load of the entire system is evenly distributed, thereby significantly increasing the output torque and achieving torque amplification.
2. Speed and gear ratio control: By adjusting the tooth number ratio of the sun gear, planet gears, and ring gear, the speed relationship and gear ratio between the input and output can be precisely controlled. For example, if the number of planet gears is large or the tooth number difference between the sun gear and the ring gear is large, the gear ratio increases, the output speed decreases, and the torque increases accordingly.
3. Low backlash characteristic: High precision planetary gearboxes pay special attention to reducing or eliminating the backlash between gears, that is, the so-called "zero/low backlash." This is usually achieved through precision machining, preloading technology, and component selection to ensure extremely high motion accuracy and smoothness under any load.
4. Dynamic response and stability: Due to the even load distribution and multiple contact points, the planetary gearbox can provide good dynamic performance, including fast response, stable operation, and durability under heavy loads.

Design Considerations and Selection Criteria

When designing and selecting high precision planetary gearboxes, the following factors should be considered:

Applications

The high precision planetary gearbox is widely used in various industries, including:

• Servo motor systems: Used in industrial automation equipment for precise speed control and position positioning, such as robot joint drives, precision machine tool feed mechanisms, and semiconductor manufacturing equipment.
• Medical equipment: Used in high-end medical equipment such as CT scanners, MRI machines, and surgical robots for precise motion control and torque amplification.
• Aerospace: Used in aircraft landing gear actuation systems, flight control system actuators, and satellite attitude adjustment devices that require high reliability and precision.
• Precision instruments: Used in scientific experimental equipment, precision measuring instruments, optical tracking systems, and other applications that require extremely high transmission accuracy.
• Automotive manufacturing: Used in power steering systems for new energy vehicles, drive units for electric vehicles, and transmission systems for high-performance racing cars.
• Robotics: Used in joint drive parts of industrial robots, service robots, and special operation robots.
• Logistics automation: Used in lifting platforms, conveyor drives, and AGVs (Automated Guided Vehicles) in automatic storage systems.

About Us

We are a professional manufacturer of transmission equipment, located in Hangzhou, Zhejiang. Our products are manufactured strictly according to international quality management system standards and have passed the mandatory CCC certification in China and the CE certification in the European Union. Our products are produced in accordance with international IEC standards and have achieved an advanced level of international similar products.

Our Advantages

1. Advanced production technology and equipment
2. Strict quality control system
3. Professional R&D team and customized service
4. Complete product line and rich experience in the industry
5. Efficient logistics and delivery system
6. Competitive prices and excellent customer service

Author: Miya