TM142 Series High Precision Planetary Gearbox Helical Gear Reducer

Overview of TM142 Series High Precision Planetary Gearbox Helical Gear Reducer

TM142 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 that is widely used in high-precision applications such as robotics, medical equipment, aerospace, and precision instruments. It is designed to provide high accuracy, low backlash, and high torsional stiffness.

Basic Construction of High Precision Planetary Gearbox

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

1. Sun Gear: The sun gear is located at the center of the planetary gearbox and is typically connected to the input shaft or fixed to the housing as a stationary component.
2. Planet Gears: The planet gears rotate around the sun gear and are supported and held in their relative positions by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear and, when power is input, they collectively bear and distribute the load.
3. Planet Carrier: The planet carrier is a structure with multiple planet gear shaft holes, which carries the planet gears and allows them to rotate relative to the sun gear. The planet carrier can be used as an output element or connected to another shaft to transmit or receive torque.
4. Ring Gear/Annulus: The ring gear is a large diameter circular gear fixed inside the housing, with teeth on both its inner and outer surfaces that mesh with the planet gears. In some applications, the ring gear can also serve as the input or output end.
5. Bearings and Shaft System: The bearings in the high precision planetary gearbox support the input shaft, output shaft, and planet carrier, ensuring stable rotation and smooth operation between the components.
6. Housing and Seals: The housing is the external frame of the entire gearbox, which protects the internal components from external environmental influences and provides installation interfaces. Seals ensure that the internal lubricant does not leak while preventing dust and water from entering the gearbox.

Working Principle of High Precision Planetary Gearbox

The working principle of the high precision planetary gearbox can be explained by the following points:

1. Torque Transmission: When power is input to the sun gear, it drives the planet gears around it. Since each planet gear meshes with both the sun gear and the ring gear, they rotate around their own axis while revolving around the center of the sun gear via the planet carrier. In this way, the torque input to the sun gear is amplified and evenly distributed to the planet carrier at the output end.
2. Speed Conversion and Torque Amplification: By adjusting the gear ratio of different components, input and output speed conversion and torque amplification can be achieved. Generally, as the number of planet gears increases or the gear ratio increases, the effect of torque amplification becomes more significant, but the output speed decreases at the same time.
3. Low Backlash Design: In high-precision applications, to ensure accurate position control and minimum mechanical clearance, high-precision planetary gearboxes use preload technology to reduce or eliminate the clearance between gears, that is, the "zero/low backlash" design.
4. Load Distribution and Dynamic Response: One of the important advantages of the planetary gear mechanism is that it can evenly distribute the load among multiple planet gears, thereby improving the load-bearing capacity and stability of the entire system, and optimizing the dynamic response performance.

Design and Selection Considerations of High Precision Planetary Gearbox

When designing and selecting a high precision planetary gearbox, the following factors need to be considered:

Applications of High Precision Planetary Gearbox

The high precision planetary gearbox has a wide range of applications, including:

1. Servo Motor Systems: Used in industrial automation equipment for precise speed control and position positioning, such as robot joint drives, feed mechanisms for precision machine tools, and semiconductor manufacturing equipment.
2. Medical Equipment: Used in high-end medical equipment such as CT scanners, MRI machines, and surgical robots for precise motion control and torque amplification.
3. Aerospace: Used in aircraft landing gear retracting systems, flight control system actuators, and satellite attitude adjustment devices that require high reliability and precision.
4. Precision Instruments: Used in scientific experimental equipment, precision measuring instruments, and optical tracking systems that have extremely high requirements for transmission accuracy.
5. Automotive Manufacturing: Used in power steering systems of new energy vehicles, drive units of electric vehicles, and transmission systems of high-performance racing cars.
6. Robotics: Used in joint drive parts of industrial robots, service robots, and special operation robots.
7. Logistics Automation: Used in vertical lifters, conveyor drive units, and AGVs (Automated Guided Vehicles) in automated storage systems.

About Our Company

We are a professional manufacturer of power transmission equipment located in Ningbo, Zhejiang, China. With strict adherence to the international quality management system standard ISO90012015, our products have passed the compulsory CCC certification in China and the CE certification of the European Union. Our products are produced according to the international IEC standard and have reached the advanced level of similar products in the world.

Our Advantages

• Strict adherence to international quality management system standards.
• High-quality products that have passed compulsory certifications in China and the European Union.
• Advanced production technology and equipment, and a strong research and development team.
• A wide range of transmission products to meet the needs of different industries.
• A professional sales team to provide customers with high-quality services.

Author: Miya