Application of PM and MIM processes to planetary gears

Application of powder metallurgy and metal injection molding processes to planetary gears

1.What is a planetary gear?

Planetary gear is a mechanical transmission device composed of an oil gear set. Because its structure and movement are similar to the movement of planets in the solar system revolving around the sun, it is called a planetary gear.

planetary gears

2.The main uses of planetary gears include:

Reduction or speed increase: The planetary gear system can achieve different reduction or speed increase ratios according to the design of the gear, which is used to adjust the output speed of the mechanical system.

Torque transmission: The planetary gear system can effectively transmit torque, allowing the mechanical system to withstand greater loads.

Gearbox: Planetary gear systems are often used in gearboxes of automobiles and other mechanical equipment to realize the shifting function of different gears.

Transmitting motion and power: Planetary gear systems can transmit power from one component to another and are used to drive the movement of various mechanical equipment.

Planetary gear application

 

Because the planetary gear is a very important transmission device, it is widely used in various mechanical systems, including spacecraft, aircraft, ships, automobiles, machinery, spacecraft and so on.

 

3.The main components of planetary gears are:

Sun gear: Located at the center of the planetary gear system, it is the main axis for transmitting power.

Planet gear: It is mounted on the planet carrier and rotates around the sun gear.

Planet Carrier: Connects the central axes of the planet wheels together so that they can rotate around the sun wheel.

Internal ring gear: Also called ring gear, it is located outside the planetary gear system and meshes with the planetary gear teeth.

Planetary gear parts Planetary gear parts

 

4.Application of PM and MIM processes to planetary gears

From the product structure, planet gear is very suitable for production using PM and MIM processes.

 

Ordinary planet gears are produced using the PM process. Compared with traditional CNC processing, product costs can be reduced by 50-80%. The product is controlled through mold and sintering, with good consistency. Stable quality.

 

For some products, the strength of the planet gear is required to increase the torque of the entire planet gear, so MIM needs to be used for production.

Comparing the planet gear produced by MIM and the planet gear produced by PM, the density is higher, the hardness is greater, and the strength is stronger.

 

 Metal injection molding VS Powder Metallurgy

 

Planetary gear accessories produced by PM process

Planetary gear accessories produced by PM process

 

Planetary gear accessories produced by PM process

 

Planetary gear accessories produced by MIM process

Planetary gear accessories produced by MIM process

Planetary gear accessories produced by MIM process

We, JH MIM, have our own MIM and PM factories, and have mass-produced planetary gear accessories for both processes. With rich production experience, if you have any questions, please contact us directly.

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