Within an epicyclic or planetary gear train, several spur gears distributed evenly around the circumference run between a gear with internal teeth and a gear with external teeth on a concentric orbit. The circulation of the spur gear takes place 
in analogy to the orbiting of the planets in the solar system. This is one way planetary gears obtained their name.
The components of a planetary gear train can be split into four main constituents.
The housing with integrated internal teeth is actually a ring gear. In the majority of cases the housing is fixed. The driving sun pinion is certainly in the center of the ring equipment, and is coaxially organized with regards to the output. The sun pinion is usually mounted on a clamping system in order to provide the mechanical link with the motor shaft. During operation, the planetary gears, which are mounted on a planetary carrier, roll between the sunlight pinion and the band gear. The planetary carrier also represents the result shaft of the gearbox.
The sole reason for the planetary gears is to transfer the required torque. The amount of teeth has no effect on the transmitting ratio of the gearbox. The number of planets can also vary. As the number of planetary gears increases, the distribution of the strain increases and therefore the torque that can be transmitted. Raising the number of tooth engagements also decreases the rolling power. Since just area of the total result has to be transmitted as rolling power, a planetary gear is incredibly efficient. The benefit of a planetary equipment compared to a single spur gear is based on this load distribution. It is therefore feasible to transmit high torques wit
h high efficiency with a compact style using planetary gears.
So long as the ring gear has a continuous size, different ratios can be realized by different the number of teeth of the sun gear and the number of teeth of the planetary gears. Small the sun gear, the higher the ratio. Technically, a meaningful ratio range for a planetary stage is usually approx. 3:1 to 10:1, because the planetary gears and the sun gear are extremely small above and below these ratios. Higher ratios can be obtained by connecting several planetary levels in series in the same ring gear. In cases like this, we talk about multi-stage gearboxes.
With planetary gearboxes the speeds and torques can be overlaid by having a ring gear that’s not fixed but is driven in any direction of rotation. Additionally it is possible to repair the drive shaft in order to pick up the torque via the ring equipment. Planetary gearboxes have become extremely important in lots of areas of mechanical engineering.
They have become particularly well established in areas where high output levels and fast speeds must be transmitted with favorable mass inertia ratio adaptation. High transmission ratios can also easily be performed with planetary gearboxes. Because of their positive properties and compact design, the gearboxes have many potential uses in commercial applications.
The benefits of planetary gearboxes:
Coaxial arrangement of input shaft and output shaft
Load distribution to many planetary gears
High efficiency due to low rolling power
Nearly unlimited transmission ratio options because of mixture of several planet stages
Suitable as planetary switching gear due to fixing this or that section of the gearbox
Chance for use as overriding gearbox
Favorable volume output
Suitability for an array of applications
Epicyclic gearbox is an automatic type gearbox in which parallel shafts and gears arrangement from manual equipment box are replaced with more compact and more reliable sun and planetary kind of gears arrangement and also the manual clutch from manual power train is certainly replaced with hydro coupled clutch or torque convertor which in turn produced the transmission automatic.
The thought of epicyclic gear box is extracted from the solar system which is known as to the perfect arrangement of objects.
The epicyclic gearbox usually comes with the P N R D S (Parking, Neutral, Reverse, Drive, Sport) modes which is obtained by fixing of sun and planetary gears according to the need of the drive.
Ever-Power Planetary Equipment Motors are an inline option providing high torque in low speeds. Our Planetary Gear Motors provide a high efficiency and provide excellent torque output when compared to other types of gear motors. They can deal with a different load with reduced backlash and are greatest for intermittent duty procedure. With endless decrease ratio choices, voltages, and sizes, Ever-Power Products has a fully tailored gear motor option for you.
A Planetary Gear Engine from Ever-Power Products features among our various types of DC motors coupled with among our uniquely designed epicyclic or planetary gearheads. A planetary gearhead consists of an interior gear (sun gear) that drives multiple outer gears (planet gears) producing torque. Multiple contact points over the planetary gear teach permits higher torque generation in comparison to one of our spur equipment motors. In turn, an Ever-Power planetary gear motor has the capacity to handle various load requirements; the more equipment stages (stacks), the bigger the load distribution and torque transmitting.
Features and Benefits
High Torque Capabilities
Sleek Inline Design
High Efficiency
Ability to Handle Large Reduction Ratios
High Power Density
Applications
Our Planetary Equipment Motors deliver exceptional torque result and efficiency in a compact, low noise style. These characteristics in addition to our value-added capabilities makes Ever-Power s gear motors a great choice for all movement control applications.
Robotics
Industrial Automation
Dental Chairs
Rotary Tables
Pool Chair Lifts
Exam Room Tables
Massage Chairs
Packaging Eqipment
Labeling Eqipment
Laser Cutting Machines
Industrial Textile Machinery
Conveying Systems
Test & Measurement Equipment
Automated Guided Automobiles (AGV)
Within an epicyclic or planetary gear train, several spur gears distributed evenly around the circumference operate between a gear with internal teeth and a gear with external teeth on a concentric orbit. The circulation of the spur gear occurs in analogy to the orbiting of the planets in the solar program. This is how planetary gears obtained their name.
The parts of a planetary gear train could be split into four main constituents.
The housing with integrated internal teeth is known as a ring gear. In nearly all cases the housing is fixed. The traveling sun pinion is definitely in the center of the ring equipment, and is coaxially organized in relation to the output. Sunlight pinion is usually mounted on a clamping system in order to provide the mechanical link with the motor shaft. During procedure, the planetary gears, which are installed on a planetary carrier, roll between the sun pinion and the ring gear. The planetary carrier also represents the output shaft of the gearbox.
The sole reason for the planetary gears is to transfer the required torque. The amount of teeth has no effect on the transmitting ratio of the gearbox. The number of planets may also vary. As the number of planetary gears improves, the distribution of the load increases and therefore the torque that can be transmitted. Increasing the number of tooth engagements also decreases the rolling power. Since just part of the total output has to be transmitted as rolling power, a planetary gear is incredibly efficient. The benefit of a planetary gear compared to a single spur gear lies in this load distribution. It is therefore feasible to transmit high torques wit
h high efficiency with a concise style using planetary gears.
Provided that the ring gear has a constant size, different ratios can be realized by varying the amount of teeth of sunlight gear and the number of tooth of the planetary gears. Small the sun equipment, the greater the ratio. Technically, a meaningful ratio range for a planetary stage is approx. 3:1 to 10:1, since the planetary gears and sunlight gear are extremely small above and below these ratios. Higher ratios can be acquired by connecting a number of planetary phases in series in the same ring gear. In cases like this, we speak of multi-stage gearboxes.
With planetary gearboxes the speeds and torques can be overlaid by having a band gear that is not fixed but is driven in any direction of rotation. It is also possible to repair the drive shaft to be able to pick up the torque via the band equipment. Planetary gearboxes have become extremely important in lots of areas of mechanical engineering.
They have grown to be particularly well established in areas where high output levels and fast speeds must be transmitted with favorable mass inertia ratio adaptation. High transmission ratios can also easily be performed with planetary gearboxes. Because of their positive properties and compact design, the gearboxes possess many potential uses in industrial applications.
The benefits of planetary gearboxes:
Coaxial arrangement of input shaft and output shaft
Load distribution to many planetary gears
High efficiency because of low rolling power
Nearly unlimited transmission ratio options due to combination of several planet stages
Appropriate as planetary switching gear because of fixing this or that portion of the gearbox
Possibility of use as overriding gearbox
Favorable volume output
On the surface, it could seem that gears are being “reduced” in quantity or size, which is partially true. Whenever a rotary machine such as an engine or electrical motor needs the result speed reduced and/or torque improved, gears are commonly used to accomplish the desired result. Gear “reduction” specifically refers to the velocity of the rotary machine; the rotational rate of the rotary machine is “decreased” by dividing it by a gear ratio higher than 1:1. A gear ratio greater than 1:1 is certainly achieved when a smaller gear (reduced size) with fewer number of the teeth meshes and drives a larger gear with greater amount of teeth.
Gear reduction gets the opposite effect on torque. The rotary machine’s output torque is improved by multiplying the torque by the gear ratio, less some efficiency losses.
While in lots of applications gear decrease reduces speed and raises torque, in additional applications gear reduction is used to improve rate and reduce torque. Generators in wind generators use gear reduction in this manner to convert a relatively slow turbine blade rate to a high speed capable of generating electricity. These applications make use of gearboxes that are assembled reverse of those in applications that reduce acceleration and increase torque.
How is gear decrease achieved? Many reducer types can handle attaining gear reduction including, but not limited by, parallel shaft, planetary and right-position worm gearboxes. In parallel shaft gearboxes (or reducers), a pinion equipment with a certain number of teeth meshes and drives a larger gear with a lot more teeth. The “decrease” or gear ratio is usually calculated by dividing the number of the teeth on the large gear by the number of teeth on the tiny gear. For example, if an electric motor drives a 13-tooth pinion equipment that meshes with a 65-tooth gear, a reduced amount of 5:1 can be achieved (65 / 13 = 5). If the electrical motor speed can be 3,450 rpm, the gearbox reduces this rate by five occasions to 690 rpm. If the engine torque is 10 lb-in, the gearbox raises this torque by a factor of five to 50 lb-in (before subtracting out gearbox effectiveness losses).
Parallel shaft gearboxes often contain multiple gear models thereby increasing the apparatus reduction. The total gear reduction (ratio) is determined by multiplying each individual equipment ratio from each equipment arranged stage. If a gearbox includes 3:1, 4:1 and 5:1 gear models, the full total ratio is 60:1 (3 x 4 x 5 = 60). Inside our example above, the 3,450 rpm electric motor would have its rate decreased to 57.5 rpm by using a 60:1 gearbox. The 10 lb-in electric motor torque would be risen to 600 lb-in (before efficiency losses).
If a pinion gear and its mating equipment have the same number of teeth, no decrease occurs and the gear ratio is 1:1. The gear is named an idler and its major function is to improve the path of rotation instead of decrease the speed or raise the torque.
Calculating the gear ratio in a planetary gear reducer is much less intuitive as it is dependent upon the amount of teeth of the sun and band gears. The planet gears become idlers and don’t affect the gear ratio. The planetary gear ratio equals the sum of the amount of teeth on the sun and ring gear divided by the number of teeth on the sun gear. For instance, a planetary established with a 12-tooth sun gear and 72-tooth ring gear includes a equipment ratio of 7:1 ([12 + 72]/12 = 7). Planetary gear sets can achieve ratios from about 3:1 to about 11:1. If more equipment reduction is necessary, additional planetary stages can be used.
The gear decrease in a right-angle worm drive would depend on the amount of threads or “starts” on the worm and the amount of teeth on the mating worm wheel. If the worm has two starts and the mating worm wheel provides 50 tooth, the resulting equipment ratio is 25:1 (50 / 2 = 25).
When a rotary machine such as an engine or electric electric motor cannot supply the desired output velocity or torque, a equipment reducer may provide a great choice. Parallel shaft, planetary, right-angle worm drives are common gearbox types for attaining gear reduction. Contact Groschopp today with all of your gear reduction questions.
