DRAG AND LIFT FORCE

 

At first glance, planetary gear systems, also known as epicyclic gear systems, appear to be quite complex. It is certainly true that it takes a skilled gear engineer to master all of the intricate aspects of designing this type of gear system. If you are an advanced gear engineer, this post isn’t for you. But if you are looking for a more basic understanding of planetary gears, you’ve come to the right place.

What Is a planetary gear Set?

A simple planetary gear set is made up of three main components:

1. The sun gear that sits in the centre (central gear).
2. Multiple planet gears.
3. The ring gear (outer gear).

The sun gear is located at the center (yellow), and transmits torque to the planet gears (blue) which are typically mounted on a moveable carrier (green). The planet gears orbit around the sun gear and mesh with an outer ring gear (pink). Planetary gear systems can vary in complexity from very simple to intricate compound systems, depending on the application.

Planetary gearboxes can be powered by either electric motors, hydraulic motors or petrol or diesel combustion engines. The simple design is a highly efficient and effective way of transferring power from a motor to an output. Approximately 97% of the energy input is delivered as an output.

Where are Planetary Gear Systems Used?

Planetary gears are often used when space and weight are an issue, but a large amount of speed reduction and torque are needed. This requirement applies to a variety of industries, including tractors and construction equipment where a large amount of torque is needed to drive the wheels. Other places you will find planetary gear sets include turbine engines, automatic transmissions, and even electric screwdrivers.

Planetary gear systems are able to produce a lot of torque because the load is shared among multiple planet gears. This arrangement also creates more contact surfaces and a larger contact area between the gears than a traditional parallel axis gear system. Because of this, in the load is more evenly distributed and therefore the gears are more resistant to damage.

Manufacturing Planetary Gears

The skills required to manufacture planetary gears are the same as those required for any other type of precision gear manufacturing. Gear Motions is a leading precision gear manufacturer specializing in supplying custom cut and ground gears. We have an extensive portfolio of gear production capabilities which includes the ability to produce all of the individual gears that make up a planetary gear system. For specific manufacturing capabilities such as minimum and maximum diameter, pitch diameter, and face width, please visit our gear production capabilities page. Please note we do not manufacture gearboxes.

Gear Motions also has extensive experience when it comes to gear engineering and design. Whether you need to design a gear system from scratch, or need assistance with a redesign, we will work with you through the entire process to ensure your gears are designed and manufactured with precision. Engineering services include reverse engineering, design for manufacturability, prototyping, and redesign.

How Do I Know What Planetary Gearbox I Need?

The choice of planetary gearbox, its size and gearing ratio should be defined by the outcome. It’s a careful balance between size, efficiency, performance and cost. Have a consultative approach to design. Start each project by developing a deep understanding of the application, the speeds, torque and function of the machine.

What are the main advantages of planetary gear motors?

• Increased repeatability: Its greater speed radial and axial load offers reliability and robustness, minimizing the misalignment of the gear. In addition, uniform transmission and low vibrations at different loads provide a perfect repeatability.

• Perfect precision:  Most rotating angular stability improves the accuracy and reliability of the movement.

• Power noise level because there is more surface contact:  Rolling is much softer and jumps are virtually nonexistent.

• Greater durability:  Due to its torsional rigidity and better rolling. To improve this feature, your bearings help reduce the losses that would occur by rubbing the shaft on the box directly. Thus, greater efficiency of the gear and a much smoother operation is achieved.

• Very good levels of efficiency:  Planetary reducers offer greater efficiency and thanks to its design and internal layout losses are minimized during their work. In fact, today, this type of drive mechanisms are those that offer greater efficiency.

• Increased torque transmission:  With more teeth in contact, the mechanism is able to transmit and withstand more torque. In addition, it does it in a more uniform manner.

• Maximum versatility:  Its mechanism is contained in a cylindrical gearbox, which can be installed in almost any space.

What regulations apply to planetary gearboxes?

Keep in mind that each manufacturer sets its own measures when presenting the operating time of your gears or the maximum torque they are able to bear. Nevertheless, we can find certain regulations governing these parameters.

– ISO 6636 for gears.

– DIN ISO 281: With all the rules that helps to make a correct calculation of the bearings.

– ISO 9409: Part II talks about the design of the output shafts of these geared motors according to different specifications.

MAJOR APPLICATIONS

 

Cases of successful implementation of planetary gear units 

Case 1

             A passive fire protection company needed a solution to facilitate the evacuation of people in buildings in case of fire. For this project a system of isolation barriers driven rollers was developed through a planetary gear . It was able to design the perfect motion of falling barriers in extreme situations and with total lack of power supply.

Case 2

              Regulation of ventilation in farms: In this project the air conditioning sector, a system that uses sensors for automatically controlled ventilation inside the farms and greenhouses was designed. CLR developed an epicyclical gear motor that adapted to the difficult tubular location  that it would be installed.

 A wide range of standard drive solutions standard in its catalog of planetary gear motors; with gears ranging from 4: 1 to 2671: 1. In addition, all models  are modular, since several motors can be mounted on the same gearbox. This feature allows customers to incorporate the ones best suited to their needs.

On the other hand, we are able to design and produce customized drive solutions for more specific applications that require a comprehensive solution from design to final production applications.

Blog by-

Rohan Arwari             11

Aryaman Gadoo         12

Ashish Mali                13

Atharva Yewale         14

Balasaheb Bagal        15