TMR090 Series High Precision Planetary Gearbox Helical Gear Reducer Overview

TMR090 Series High Precision Planetary Gearbox Helical Gear Reducer is a type of gearbox that uses planetary gears to transmit torque. It is commonly used in servo motor systems and is known for its low backlash design. Its aliases are servo motor planetary gearbox and low backlash planetary gearbox.

Basic Structure of High Precision Planetary Gearbox

The High Precision Planetary Gearbox is composed of several components:

1. Sun Gear: Located at the center of the planetary gearbox, the sun gear is typically connected to the input shaft or fixed to the housing as the stationary component.
2. Planet Gears: The planet gears rotate around the sun gear and are supported and maintained in their relative positions by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear/annulus, and when power is inputted, they jointly bear and distribute the load.
3. Planet Carrier: The planet carrier is a structure with multiple planet gear shaft holes that carries the planet gears and allows them to rotate relative to the sun gear. The planet carrier can serve as an output component or be connected to another shaft to transmit or receive torque.
4. Ring Gear/Annulus: The inner ring gear is a large diameter annular gear that is fixed inside the housing, and has teeth on both its inner and outer surfaces that mesh with the planet gears. In some applications, the inner ring gear can also serve as an 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 among the components.
6. Housing and Seals: The housing is the external framework of the entire gearbox, which protects the internal components from external environmental influences and provides installation interfaces. Seals ensure that the internal lubricant will not leak and prevent dust and water from entering the gearbox.

Basic Structure of High Precision Planetary Gearbox - Detailed Explanation

• Sun Gear: The sun gear is the central gear in the planetary gearbox, which provides the input power to the gearbox. It is typically connected to the input shaft or fixed to the housing as the stationary component.
• Planet Gears: The planet gears are the gears that rotate around the sun gear and are supported by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear/annulus. When power is inputted, they jointly bear and distribute the load.
• Planet Carrier: The planet carrier is a structure with multiple planet gear shaft holes that carries the planet gears and allows them to rotate relative to the sun gear. The planet carrier can serve as an output component or be connected to another shaft to transmit or receive torque.
• Ring Gear/Annulus: The inner ring gear is a large diameter annular gear that is fixed inside the housing. It has teeth on both its inner and outer surfaces that mesh with the planet gears.
• Bearings and Shaft System: The bearings in the high precision planetary gearbox support the input shaft, output shaft, and planet carrier. This ensures stable rotation and smooth operation among the components.
• Housing and Seals: The housing is the external framework of the entire gearbox, which protects the internal components from external environmental influences and provides installation interfaces. Seals ensure that the internal lubricant will not leak and prevent dust and water from entering the gearbox.

Working Principle of High Precision Planetary Gearbox

The working principle of High Precision Planetary Gearbox includes:

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

Working Principle of High Precision Planetary Gearbox - Detailed Explanation

• Torque Transmission: When power is inputted to the sun gear, the planet gears rotate around the sun gear and revolve around the center of the sun gear with the planet carrier. In this way, the torque inputted to the sun gear is magnified and evenly distributed to the planet carrier on the output side through the planet gears.
• Speed Conversion and Torque Amplification: By adjusting the gear ratio of different components, speed conversion and torque amplification can be achieved between the input and output sides. Generally, when the number of planet gears increases or the gear ratio becomes larger, the amplification effect of torque becomes more significant, but the output speed decreases.
• Low Backlash Design: In high-precision applications, high-precision planetary gearboxes use preload technology to reduce or eliminate the clearance between gears, known as "zero/low backlash" design. This ensures accurate position control and minimal mechanical clearance.
• Load Distribution and Dynamic Response: One important advantage of the planetary gear mechanism is that it can distribute the load evenly 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

Applications of High Precision Planetary Gearbox

High Precision Planetary Gearbox is used in various applications, including:

• Servo Motor Systems: Used in industrial automation equipment for precision speed control and position positioning, such as robot joint drives, feed mechanisms in precision machine tools, semiconductor manufacturing equipment, etc.
• Medical Equipment: Used in high-end medical equipment such as CT scanners, MRI machines, surgical robots, etc., for precise motion control and torque amplification.
• Aerospace: Used in airplane landing gear systems, actuators in flight control systems, satellite attitude adjustment devices, etc., where high reliability and precision are required.
• Precision Instruments: Used in scientific experimental equipment, precision measuring instruments, optical tracking systems, etc., where high transmission accuracy is required.
• Automotive Manufacturing: Used in power steering systems of new energy vehicles, drive units of electric vehicles, transmission systems of high-performance racing cars, etc.
• Robotics: Used in the joint drive section of industrial robots, service robots, and special operation robots.
• Logistics Automation: Used in automated storage systems such as elevators, conveyor drive systems, AGVs, etc.

Applications of High Precision Planetary Gearbox - Detailed Explanation

• Servo Motor Systems: High precision planetary gearboxes are commonly used in servo motor systems for precision motion control. They are used in various industrial automation equipment, such as robot joint drives, feed mechanisms in precision machine tools, semiconductor manufacturing equipment, etc.
• Medical Equipment: High precision planetary gearboxes are used in high-end medical equipment such as CT scanners, MRI machines, surgical robots, etc., for precise motion control and torque amplification.
• Aerospace: High precision planetary gearboxes are used in airplane landing gear systems, actuators in flight control systems, satellite attitude adjustment devices, etc., where high reliability and precision are required.
• Precision Instruments: High precision planetary gearboxes are used in scientific experimental equipment, precision measuring instruments, optical tracking systems, etc., where high transmission accuracy is required.
• Automotive Manufacturing: High precision planetary gearboxes are used in power steering systems of new energy vehicles, drive units of electric vehicles, transmission systems of high-performance racing cars, etc.
• Robotics: High precision planetary gearboxes are used in the joint drive section of industrial robots, service robots, and special operation robots.
• Logistics Automation: High precision planetary gearboxes are used in automated storage systems such as elevators, conveyor drive systems, AGVs, etc.

About Our Company

We are a professional manufacturer of power transmission equipment located in Hangzhou, Zhejiang. Our company operates strictly according to the international quality management system standard ISO90012015, and our products have passed the mandatory CCC certification in China and the CE certification of the European Union. Our products are produced according to international lC standards, and have reached the advanced level of similar international products.

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• Strictly follows international quality management system standards
• Products have passed mandatory CCC certification in China and the CE certification of the European Union
• Products are produced according to international lC standards and have reached the advanced level of similar international products

Author: Miya