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 exterior 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 how planetary gears acquired their name.
The components 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 casing is fixed. The driving sun pinion is in the heart of the ring gear, and is coaxially organized with regards to the output. The sun pinion is usually mounted on a clamping system to be able to offer the mechanical connection to the electric motor shaft. During operation, the planetary gears, which are mounted on a planetary carrier, roll between your sunlight pinion and the ring equipment. 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 number of teeth does not have any effect on the tranny ratio of the gearbox. The amount of planets may also vary. As the amount of planetary gears boosts, the distribution of the load increases and then the torque which can be transmitted. Increasing the amount of tooth engagements also reduces the rolling power. Since only portion of the total result needs to be transmitted as rolling power, a planetary gear is incredibly efficient. The advantage of a planetary gear compared to a single spur gear is based on this load distribution. Hence, it is possible to transmit high torques wit
h high efficiency with a compact design using planetary gears.
So long as the ring gear includes a continuous size, different ratios could be realized by various the number of teeth of sunlight gear and the amount of teeth of the planetary gears. Small 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 acquired by connecting several planetary stages in series in the same band 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 fix the drive shaft to be able to pick up the torque via the ring gear. Planetary gearboxes have grown to be extremely important in many regions of mechanical engineering.
They have become particularly more developed in areas where high output levels and fast speeds should be transmitted with favorable mass inertia ratio adaptation. High transmitting ratios may also easily be performed with planetary gearboxes. Because of the positive properties and small design, the gearboxes have many potential uses in industrial applications.
The advantages of planetary gearboxes:
Coaxial arrangement of input shaft and output shaft
Load distribution to several planetary gears
High efficiency due to low rolling power
Almost 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 gear box are replaced with an increase of compact and more dependable sun and planetary type of gears arrangement and also the manual clutch from manual power teach 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 known as to the perfect arrangement of objects.
The epicyclic 
gearbox usually includes the P N R D S (Parking, Neutral, Invert, Drive, Sport) settings which is obtained by fixing of sun and planetary gears based on the need of the drive.
Ever-Power Planetary Equipment Motors are an inline answer 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 equipment motors. They can handle a varying load with reduced backlash and are best for intermittent duty operation. With endless reduction ratio options, voltages, and sizes, Ever-Power Products includes a fully tailored equipment motor solution for you.
A Planetary Gear Engine from Ever-Power Items features one of our numerous kinds of DC motors coupled with among our uniquely designed epicyclic or planetary gearheads. A planetary gearhead contains an internal gear (sun gear) that drives multiple outer gears (planet gears) producing torque. Multiple contact points across the planetary gear teach allows for higher torque generation in comparison to among our spur equipment motors. Subsequently, an Ever-Power planetary equipment motor has the ability to handle numerous load requirements; the more equipment stages (stacks), the bigger the strain 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 output and effectiveness in a concise, low noise style. These characteristics furthermore to our value-added capabilities makes Ever-Power s gear 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 Vehicles (AGV)
In 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 equipment occurs in analogy to the orbiting of the planets in the solar program. This is how planetary gears acquired their name.
The parts of a planetary gear train can be split into four main constituents.
The housing with integrated internal teeth is actually a ring gear. In nearly all cases the casing is fixed. The driving sun pinion is usually in the heart of the ring gear, and is coaxially arranged with regards to the output. Sunlight pinion is usually attached to a clamping system in order to provide the mechanical link with the engine shaft. During procedure, the planetary gears, which are installed on a planetary carrier, roll between the 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 required torque. The number of teeth has no effect on the tranny ratio of the gearbox. The amount of planets may also vary. As the number of planetary gears improves, the distribution of the strain increases and then the torque which can be transmitted. Increasing the number of tooth engagements also decreases the rolling power. Since just portion of the total output has to be transmitted as rolling power, a planetary equipment is incredibly efficient. The advantage of a planetary equipment compared to an individual spur gear lies in this load distribution. Hence, it is possible to transmit high torques wit
h high efficiency with a concise style using planetary gears.
So long as the ring gear includes a constant size, different ratios can be realized by different the number of teeth of the sun gear and the number of tooth of the planetary gears. Small the sun equipment, the higher the ratio. Technically, a meaningful ratio range for a planetary stage is certainly 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 a number of planetary levels 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’s not fixed but is driven in any direction of rotation. Additionally it is possible to repair the drive shaft in order to grab the torque via the ring equipment. Planetary gearboxes have become extremely important in many regions of mechanical engineering.
They have become particularly more developed in areas where high output levels and fast speeds should be transmitted with favorable mass inertia ratio adaptation. High transmitting ratios may also easily be achieved with planetary gearboxes. Because of the positive properties and small design, the gearboxes have many potential uses in commercial applications.
The advantages of planetary gearboxes:
Coaxial arrangement of input shaft and output shaft
Load distribution to several planetary gears
High efficiency because of low rolling power
Nearly unlimited transmission ratio options because of combination of several planet stages
Appropriate as planetary switching gear due to fixing this or that part of the gearbox
Possibility of use as overriding gearbox
Favorable volume output
On the surface, it could appear that gears are being “reduced” in quantity or size, which is partially true. When a rotary machine such as an engine or electric motor needs the result speed decreased and/or torque improved, gears are commonly utilized to accomplish the required result. Gear “reduction” specifically refers to the acceleration of the rotary machine; the rotational swiftness of the rotary machine is “decreased” by dividing it by a equipment ratio higher than 1:1. A gear ratio higher than 1:1 can be achieved whenever a smaller gear (decreased size) with fewer number of teeth meshes and drives a more substantial 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 performance losses.
While in lots of applications gear reduction reduces speed and boosts torque, in other applications gear reduction is used to increase quickness and reduce torque. Generators in wind turbines use gear decrease in this manner to convert a comparatively slow turbine blade quickness to a higher speed capable of producing electricity. These applications make use of gearboxes that are assembled opposing of these in applications that reduce speed and increase torque.
How is gear reduction achieved? Many reducer types are capable of attaining gear reduction including, but not limited to, 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 definitely calculated by dividing the number of teeth on the large equipment by the amount of teeth on the small gear. For example, if a power motor drives a 13-tooth pinion gear that meshes with a 65-tooth equipment, a reduction 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 situations to 690 rpm. If the engine torque is certainly 10 lb-in, the gearbox improves this torque by a factor of five to 50 lb-in (before subtracting out gearbox performance losses).
Parallel shaft gearboxes many times contain multiple gear pieces thereby increasing the apparatus reduction. The total gear reduction (ratio) depends upon multiplying each individual gear ratio from each gear established stage. If a gearbox contains 3:1, 4:1 and 5:1 gear units, the total ratio is 60:1 (3 x 4 x 5 = 60). In our example above, the 3,450 rpm electric electric motor would have its acceleration 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 effectiveness losses).
If a pinion gear and its mating equipment have the same amount of teeth, no reduction occurs and the gear ratio is 1:1. The gear is named an idler and its primary function is to improve the direction of rotation instead of reduce the speed or boost the torque.
Calculating the apparatus ratio in a planetary equipment reducer is less intuitive since it is dependent upon the amount of teeth of sunlight and band gears. The planet gears become idlers and do not affect the gear ratio. The planetary equipment ratio equals the sum of the amount of teeth on sunlight and ring gear divided by the number of teeth on the sun gear. For example, a planetary arranged with a 12-tooth sun gear and 72-tooth ring gear has a equipment ratio of 7:1 ([12 + 72]/12 = 7). Planetary gear sets can perform ratios from about 3:1 to about 11:1. If more equipment reduction is necessary, additional planetary stages can be used.
The gear reduction in a right-angle worm drive is dependent on the number 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 provides 50 tooth, the resulting gear ratio is 25:1 (50 / 2 = 25).
When a rotary machine such as for example an engine or electric motor cannot provide the desired output acceleration or torque, a equipment reducer may provide a good solution. 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.