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January 13, 2020

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 takes place 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 divided into four main constituents.
The housing with integrated internal teeth is actually a ring gear. In nearly all cases the casing is fixed. The generating sun pinion is certainly in the center of the ring gear, and is coaxially arranged in relation to the output. The sun pinion is usually mounted on a clamping system to be able to offer the mechanical connection to the motor shaft. During operation, the planetary gears, which are installed on a planetary carrier, roll between your 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 mandatory torque. The number of teeth has no effect on the transmission ratio of the gearbox. The number of planets may also vary. As the number of planetary gears improves, the distribution of the strain increases and then the torque that can be transmitted. Raising the amount of tooth engagements also decreases the rolling power. Since only part of the total result has to be transmitted as rolling power, a planetary equipment is incredibly efficient. The advantage of a planetary gear compared to an individual spur gear lies in this load distribution. It is therefore feasible to transmit high torques wit
h high efficiency with a compact design using planetary gears.
Provided that the ring gear has a continuous size, different ratios could be realized by varying the amount of teeth of sunlight gear and the number of the teeth of the planetary gears. The smaller the sun equipment, the higher the ratio. Technically, a meaningful ratio range for a planetary stage is usually approx. 3:1 to 10:1, since the planetary gears and the sun gear are extremely little above and below these ratios. Higher ratios can be obtained by connecting several planetary phases in series in the same ring gear. In this instance, we talk about multi-stage gearboxes.
With planetary gearboxes the speeds and torques could be overlaid by having a band gear that’s not fixed but is driven in virtually any direction of rotation. Additionally it is possible to repair the drive shaft to be able to grab the torque via the ring equipment. Planetary gearboxes have become extremely important in many regions of mechanical engineering.
They have grown to be particularly more developed 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 achieved 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
Almost unlimited transmission ratio options due to combination of several planet stages
Suitable as planetary switching gear because of fixing this or that portion of the gearbox
Chance for use as overriding gearbox
Favorable volume output
Suitability for a wide variety of applications
Epicyclic gearbox is an automatic type gearbox in which parallel shafts and gears set up from manual gear box are replaced with more compact and more dependable sun and planetary kind of gears arrangement and also the manual clutch from manual power train is replaced with hydro coupled clutch or torque convertor which made the transmission automatic.
The thought of epicyclic gear box is extracted from the solar system which is considered 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 based on the need of the drive.
Ever-Power Planetary Gear Motors are an inline answer providing high torque in low speeds. Our Planetary Gear Motors provide a high efficiency and offer excellent torque output when compared to other types of equipment motors. They can deal with a different load with reduced backlash and are best for intermittent duty operation. With endless decrease ratio choices, voltages, and sizes, Ever-Power Products includes a fully tailored gear motor solution for you.
A Planetary Gear Electric motor from Ever-Power Items features one of our numerous kinds of DC motors in conjunction with one of our uniquely designed epicyclic or planetary gearheads. A planetary gearhead contains an internal gear (sun equipment) that drives multiple external gears (planet gears) producing torque. Multiple contact factors across the planetary gear train allows for higher torque generation compared to one of our spur gear motors. Subsequently, an Ever-Power planetary equipment motor has the capacity to handle numerous load requirements; the more gear stages (stacks), the higher the load distribution and torque transmitting.
Features and Benefits
High Torque Capabilities
Sleek Inline Design
High Efficiency
Capability to Handle Large Reduction Ratios
High Power Density
Applications
Our Planetary Equipment Motors deliver exceptional torque result and effectiveness in a concise, low noise style. These characteristics furthermore to our value-added capabilities makes Ever-Power s equipment motors a great choice for all motion 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 run between a gear with internal teeth and a gear with exterior teeth on a concentric orbit. The circulation of the spur gear occurs in analogy to the orbiting of the planets in the solar system. 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 actually a ring gear. In nearly all cases the housing is fixed. The generating sun pinion is certainly in the center of the ring equipment, and is coaxially arranged with regards to the output. Sunlight pinion is usually mounted on a clamping system to be able to provide the mechanical link with the engine shaft. During operation, the planetary gears, which are mounted on a planetary carrier, roll between your sunlight 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 mandatory torque. The amount of teeth does not have any effect on the transmitting ratio of the gearbox. The number of planets may also vary. As the amount of planetary gears increases, the distribution of the strain increases and then the torque which can be transmitted. Raising the amount of tooth engagements also decreases the rolling power. Since only area of the total output has to be transmitted as rolling power, a planetary equipment is incredibly efficient. The benefit of a planetary equipment compared to an individual spur gear is based on this load distribution. It is therefore feasible to transmit high torques wit
h high efficiency with a concise style using planetary gears.
So long as the ring gear has a constant size, different ratios can be realized by various the number of teeth of sunlight gear and the number of the teeth of the planetary gears. The smaller the sun equipment, the higher the ratio. Technically, a meaningful ratio range for a planetary stage can be approx. 3:1 to 10:1, because the planetary gears and sunlight gear are extremely small above and below these ratios. Higher ratios can be obtained by connecting several planetary phases in series in the same ring gear. In this instance, we talk about multi-stage gearboxes.
With planetary gearboxes the speeds and torques could be overlaid by having a ring gear that is not fixed but is driven in virtually any direction of rotation. Additionally it is possible to fix the drive shaft in order to pick up the torque via the ring equipment. Planetary gearboxes have grown to be extremely important in many areas of mechanical engineering.
They have become particularly well established in areas where high output levels and fast speeds should be transmitted with favorable mass inertia ratio adaptation. High transmission ratios may also easily be performed with planetary gearboxes. Because of the positive properties and compact design, the gearboxes possess many potential uses in commercial applications.
The benefits of planetary gearboxes:
Coaxial arrangement of input shaft and output shaft
Load distribution to several planetary gears
High efficiency due to low rolling power
Nearly unlimited transmission ratio options due to mixture of several planet stages
Appropriate as planetary switching gear due to fixing this or that part of the gearbox
Chance for use as overriding gearbox
Favorable volume output
On the surface, it may seem that gears are being “reduced” in quantity or size, which is partially true. Whenever a rotary machine such as an engine or electric motor needs the output speed reduced and/or torque improved, gears are commonly utilized to accomplish the desired result. Gear “reduction” particularly refers to the swiftness of the rotary machine; the rotational speed of the rotary machine can be “reduced” by dividing it by a equipment ratio higher than 1:1. A gear ratio greater than 1:1 is achieved when a smaller equipment (reduced size) with fewer number of tooth meshes and drives a larger gear with greater quantity of teeth.
Gear reduction gets the opposite influence on torque. The rotary machine’s result torque is improved by multiplying the torque by the gear ratio, less some effectiveness losses.
While in lots of applications gear decrease reduces speed and improves torque, in various other applications gear reduction is used to improve speed and reduce torque. Generators in wind turbines use gear decrease in this fashion to convert a comparatively slow turbine blade speed to a high speed capable of generating electricity. These applications use gearboxes that are assembled reverse of those in applications that decrease speed and increase torque.
How is gear decrease achieved? Many reducer types can handle attaining gear decrease including, but not limited to, parallel shaft, planetary and right-angle worm gearboxes. In parallel shaft gearboxes (or reducers), a pinion gear with a certain number of the teeth meshes and drives a more substantial gear with a lot more teeth. The “decrease” or gear ratio is usually calculated by dividing the amount of teeth on the large gear by the amount of teeth on the tiny gear. For example, if an electric motor drives a 13-tooth pinion gear that meshes with a 65-tooth equipment, a reduction of 5:1 is certainly achieved (65 / 13 = 5). If the electrical motor speed is usually 3,450 rpm, the gearbox reduces this speed by five occasions to 690 rpm. If the motor torque is 10 lb-in, the gearbox boosts this torque by a factor of five to 50 lb-in (before subtracting out gearbox effectiveness losses).
Parallel shaft gearboxes many times contain multiple gear models thereby increasing the apparatus reduction. The full total gear reduction (ratio) depends upon multiplying each individual equipment ratio from each equipment established stage. If a gearbox contains 3:1, 4:1 and 5:1 gear units, the full total ratio is 60:1 (3 x 4 x 5 = 60). Inside our example above, the 3,450 rpm electric electric motor would have its velocity reduced to 57.5 rpm by utilizing a 60:1 gearbox. The 10 lb-in electric electric motor torque would be increased to 600 lb-in (before performance losses).
If a pinion equipment and its mating gear have the same amount of teeth, no reduction occurs and the apparatus ratio is 1:1. The apparatus is named an idler and its own primary function is to change the direction of rotation rather than decrease the speed or increase the torque.
Calculating the apparatus ratio in a planetary equipment reducer is much less intuitive since it is dependent on the number of teeth of the sun and band gears. The earth gears become idlers , nor affect the gear ratio. The planetary equipment ratio equals the sum of the amount of teeth on sunlight and ring gear divided by the amount of teeth on the sun gear. For example, a planetary established with a 12-tooth sun gear and 72-tooth ring gear includes a gear ratio of 7:1 ([12 + 72]/12 = 7). Planetary gear models can achieve ratios from about 3:1 to about 11:1. If more equipment reduction is needed, additional planetary stages can be used.
The gear decrease in a right-angle worm drive is dependent 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 begins and the mating worm wheel offers 50 teeth, the resulting equipment ratio is 25:1 (50 / 2 = 25).
Whenever a rotary machine such as an engine or electric electric motor cannot provide the desired output acceleration or torque, a equipment reducer may provide a great choice. Parallel shaft, planetary, right-position worm drives are common gearbox types for attaining gear reduction. Get in touch with Groschopp today with all your gear reduction questions.