TFR120 Series High Precision Planetary Gearbox Helical Gear Reducer

TFR120 Series High Precision Planetary Gearbox Helical Gear Reducer

Overview

TFR120 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 commonly used in applications that require high precision and accuracy. This gearbox is designed to provide high reduction ratios in a compact space, making it ideal for use in various applications. It is commonly used in industrial automation, robotics, and medical equipment.

Basic construction of High Precision Planetary Gearbox

The high precision planetary gearbox is composed of the following parts:

1. Sun Gear

The sun gear is located at the center 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, supported and maintained in relative position by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear, and they collectively bear and distribute the load when power is input.

3. Planet Carrier

The planet carrier is a structure with multiple planet gear shaft holes, which supports 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 or annulus is a large diameter ring-shaped gear fixed inside the gearbox housing. Both its inner and outer surfaces have teeth that mesh with the planet gears. In some applications, the 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 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. The seal ensures that the internal grease does not leak and prevents dust and water from entering the gearbox.

Working principle of High Precision Planetary Gearbox

The working principle of the high precision planetary gearbox is as follows:

1. Torque transmission

When power is input into the sun gear, the planet gears around it rotate. Since each planet gear meshes with both the sun gear and the ring gear, they rotate along their own axis while revolving around the center of the sun gear with the planet carrier. In this way, the torque input into the sun gear is amplified by the planet gears 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, the speed conversion between input and output as well as torque amplification can be achieved. Generally, when the number of planet gears or the gear ratio increases, the effect of torque amplification becomes more significant, but the output speed will decrease at the same time.

3. Low backlash design

In high-precision applications, in order to ensure accurate position control and minimum mechanical clearance, high-precision planetary gearboxes use preload technology to reduce or eliminate gear clearances, namely "zero/low backlash" design.

4. Load distribution and dynamic response

One important advantage of the planetary gear mechanism is that it can evenly distribute the load among multiple planet gears, thereby improving the bearing capacity and stability of the entire system, and optimizing dynamic response performance.

Design and selection considerations of High Precision Planetary Gearbox

The design and selection considerations of the high precision planetary gearbox are as follows:

Consideration	Description
Input power and speed	The power and speed of the input shaft must be within the rated range of the gearbox.
Output torque and speed	The output torque and speed must meet the requirements of the application.
Ratio and efficiency	The ratio and efficiency of the gearbox must be suitable for the application.
Mounting type and size	The mounting type and size of the gearbox must be compatible with the application.
Environmental conditions	The environmental conditions such as temperature, humidity, and vibration must be taken into account when selecting the gearbox.

Applications of High Precision Planetary Gearbox

The high precision planetary gearbox is widely used in various applications, some of which are:

1. Servo motor systems

The high precision planetary gearbox is used in conjunction with servo motors for accurate speed control and position positioning in industrial automation equipment, such as robot joint drives, precision machine tool feeding mechanisms, and semiconductor manufacturing equipment.

2. Medical equipment

The high precision planetary gearbox is used in high-end medical equipment such as CT scanners, MRI machines, surgical robots, etc. to achieve accurate motion control and torque amplification.

3. Aerospace

The high precision planetary gearbox is used in aircraft landing gear retraction systems, flight control system actuators, and satellite attitude adjustment devices that require high reliability and accuracy.

4. Precision instruments

The high precision planetary gearbox is used in scientific experimental equipment, precision measuring instruments, optical tracking systems, and other scenarios that have extremely high requirements for transmission accuracy.

5. Automotive manufacturing

The high precision planetary gearbox is used in power steering systems of new energy vehicles, drive units of electric vehicles, and transmission systems of high-performance racing cars, etc.

6. Robotics technology

The high precision planetary gearbox is used in the joint drive parts of industrial robots, service robots, and special operation robots.

7. Logistics automation

The high precision planetary gearbox is used in automatic storage systems such as elevators, conveyor belt drives, and AGVs (automatic guided vehicles).

About Us

We are a professional manufacturer of power transmission equipment located in Ningbo, Zhejiang. Our company operates strictly in accordance with the international quality management system standard ISO9001:2015. Our products have passed the China Compulsory Certification (CCC) and European Union CE certification. Our products are produced according to international IC standards and have reached the advanced level of similar international products.Our advantages are as follows:- A professional R&D team and advanced production technology.- Strict quality control and testing system to ensure product quality.- A wide range of products and customized services to meet customer needs.- Competitive pricing and on-time delivery.- Excellent after-sales service and technical support.Author: Miya