TM142 Series High Precision Planetary Gearbox Helical Gear Reducer Overview

TM142 Series High Precision Planetary Gearbox Helical Gear Reducer, also known as servo motor planetary gearbox and low backlash planetary gearbox, is a high-precision gearbox used for precise speed control and position positioning in industrial automation equipment. It consists of several key components, including the sun gear, planet gears, planet carrier, ring gear/annulus, bearings and shaft system, housing, shafts and keys, and seals.

High Precision Planetary Gearbox Basic Structure

The high precision planetary gearbox has a complex structure, consisting of the sun gear, planet gears, planet carrier, ring gear/annulus, bearings and shaft system, housing, shafts and keys, and seals. Each component plays a crucial role in the gearbox's operation.

1. Sun Gear

The sun gear is located at the center position of the planetary gearbox and is usually 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 relative position to each other by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear/annulus, and when power is input, they share and distribute the load.

3. Planet Carrier

The planet carrier is a structure with multiple planet gear axle holes. It supports the planet gears and allows them to rotate relative to the sun gear. The planet carrier can act as an output element or connect to another shaft to transmit or receive torque.

4. Ring Gear/Annulus

The ring gear/annulus is a large-diameter ring gear fixed inside the housing with teeth on both its inner and outer surfaces that mesh with the planet gears.

5. Bearings and Shaft System

The gearbox's bearings support the input shaft, output shaft, and planet carrier, ensuring stable rotation and smooth operation of each component.

6. Housing

The housing is a sturdy structure that encloses all internal components, providing stable support for the gears, protecting the internal components from external impurities, and may contain a cooling or lubrication system.

7. Shafts and Keys

The input and output shafts are connected to the sun gear or planet carrier through keys to transmit power and ensure accurate torque transmission and axial positioning.

8. Seals

Seals prevent oil leakage and the entry of contaminants into the gearbox, ensuring internal cleanliness and good lubrication status.

High Precision Planetary Gearbox Working Principle

The high precision planetary gearbox operates by transferring and amplifying torque through the interaction of the sun gear, planet gears, and ring gear/annulus. It achieves precise speed control and position positioning by adjusting the gear's teeth number ratio.

• 1. Torque transfer and amplification: When power is transferred from the input shaft to the sun gear, the sun gear starts to rotate, and the planet gears meshing with the sun gear and the ring gear/annulus begin to revolve around the sun gear. Due to the interaction of multiple sets of planet gears, the load is evenly distributed, significantly increasing the output torque and achieving torque amplification.
• 2. Speed and gear ratio control: Precise control of the speed relationship and gear ratio between the input and output is achieved by adjusting the number of teeth on the sun gear, planet gears, and ring gear/annulus. For example, increasing the number of planet gears or the difference in the number of teeth between the sun gear and the ring gear/annulus increases the gear ratio, reducing the output speed and increasing the torque correspondingly.
• 3. Low backlash characteristic: High-precision planetary gearbox focuses on reducing or eliminating the clearance between the gears, known as "zero/low backlash." This is typically achieved through precision processing, preloading techniques, and component selection to ensure the gearbox can maintain 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 provides excellent dynamic performance, including rapid response, stable operation, and durability under heavy loads.

High Precision Planetary Gearbox Design and Selection Considerations

When designing and selecting a high precision planetary gearbox, several factors should be taken into consideration, such as:

High Precision Planetary Gearbox Applications

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

• 1. Servo motor systems: Precision speed control and position positioning in industrial automation equipment, such as robot joint drives, precision machine tool feed mechanisms, and semiconductor manufacturing equipment.
• 2. Medical equipment: Precise motion control and torque amplification in high-end medical equipment, such as CT scanners, MRI machines, and surgical robots.
• 3. Aerospace: High-reliability and precision requirements, such as aircraft landing gear retracting systems, actuators in flight control systems, and satellite attitude adjustment devices.
• 4. Precision instruments: High-precision transmission requirements for scientific experimental equipment, precision measuring instruments, and optical tracking systems.
• 5. Automotive manufacturing: Power steering systems in new energy vehicles, drive units in electric vehicles, and transmission systems in high-performance racing cars.
• 6. Robotics: Joint drive parts in industrial robots, service robots, and special operation robots.
• 7. Logistics automation: Lifting machines, conveyor drives, and AGV (Automated Guided Vehicle) in automatic storage systems.

About Our Company

We are a professional transmission equipment manufacturer located in Hangzhou, Zhejiang. We strictly operate according to the ISO9001-2019 international quality management system standard. Our products have passed the compulsory CCC certification in China and the CE certification of the European Community. Our products are produced according to international IC standards and have reached the advanced level of similar international products.

Our Company's Advantages

• 1. Strict compliance with international quality management system standards
• 2. Advanced production technology and equipment
• 3. Professional and experienced team of engineers and designers
• 4. Comprehensive product range and customization services
• 5. Strict quality control and testing procedures
• 6. Prompt and efficient after-sales service

Author: Miya