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December 24, 2019

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 equipment occurs in analogy to the orbiting of the planets in the solar program. This is one way planetary gears acquired 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 casing is fixed. The generating sun pinion is in the heart of the ring equipment, and is coaxially organized with regards to the output. The sun pinion is usually attached to a clamping system in order to provide the mechanical connection to the motor shaft. During operation, the planetary gears, which are mounted 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 purpose of the planetary gears is to transfer the required torque. The amount of teeth has no effect on the transmitting ratio of the gearbox. The amount of planets can also vary. As the number of planetary gears boosts, the distribution of the load increases and therefore the torque which can be transmitted. Raising the number of tooth engagements also reduces the rolling power. Since only portion of the total output needs to be transmitted as rolling power, a planetary equipment is extremely efficient. The advantage of a planetary gear compared to a single spur gear lies in 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 constant size, different ratios can be realized by various the amount 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 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 acquired by connecting a number of planetary levels in series in the same band gear. In this case, we talk about multi-stage gearboxes.
With planetary gearboxes the speeds and torques could be overlaid by having a band gear that’s not set but is driven in virtually any direction of rotation. It is also 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 lots of regions 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 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 many planetary gears
High efficiency because of low rolling power
Nearly unlimited transmission ratio options due to combination of several planet stages
Ideal as planetary switching gear because of fixing this or that part of the gearbox
Chance for use as overriding gearbox
Favorable volume output
Suitability for an array of applications
Epicyclic gearbox can be an automatic type gearbox in which parallel shafts and gears set up from manual gear box are replaced with an increase of compact and more dependable sun and planetary kind of gears arrangement as well as the manual clutch from manual power teach is replaced with hydro coupled clutch or torque convertor which made the transmission automatic.
The idea of epicyclic gear box is taken from the solar system which is considered to an ideal arrangement of objects.
The epicyclic gearbox usually includes 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 require of the drive.
Ever-Power Planetary Equipment Motors are an inline solution providing high torque at low speeds. Our Planetary Gear Motors provide a high efficiency and offer excellent torque output when compared to other types of gear motors. They can handle a various load with reduced backlash and are greatest for intermittent duty procedure. With endless decrease ratio choices, voltages, and sizes, Ever-Power Products includes a fully tailored equipment motor solution for you.
A Planetary Gear Electric motor from Ever-Power Items features among our numerous kinds of DC motors in conjunction 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 factors across the planetary gear teach permits higher torque generation in comparison to one of our spur equipment motors. Subsequently, an Ever-Power planetary equipment motor has the capacity to handle various load requirements; the more gear stages (stacks), the bigger the load distribution and torque tranny.
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 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 Vehicles (AGV)
In 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 equipment occurs in analogy to the orbiting of the planets in the solar system. This is how planetary gears obtained their name.
The components of a planetary gear train could be divided 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 traveling sun pinion can be in the heart of the ring gear, and is coaxially arranged in relation to the output. The sun pinion is usually attached to a clamping system to be able to offer the mechanical link with the engine shaft. During procedure, the planetary gears, which are installed on a planetary carrier, roll between the sun pinion and the ring equipment. The planetary carrier also represents the output shaft of the gearbox.
The sole purpose of the planetary gears is to transfer the mandatory torque. The number 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 raises, the distribution of the load increases and therefore the torque that can be transmitted. Raising the amount of tooth engagements also reduces the rolling power. Since just portion of the total output needs 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 possible to transmit high torques wit
h high efficiency with a compact style using planetary gears.
Provided that the ring gear includes a continuous size, different ratios could be realized by various the amount of teeth of the sun gear and the amount of the teeth of the planetary gears. Small the sun gear, the higher the ratio. Technically, a meaningful ratio range for a planetary stage is definitely approx. 3:1 to 10:1, because the planetary gears and the sun gear are extremely little above and below these ratios. Higher ratios can be acquired by connecting many planetary phases in series in the same ring gear. In this instance, we speak of multi-stage gearboxes.
With planetary gearboxes the speeds and torques can be overlaid by having a ring gear that is not fixed but is driven in any direction of rotation. Additionally it is possible to fix the drive shaft in order to pick up the torque via the ring gear. Planetary gearboxes have become extremely important in lots of areas 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 may also easily be achieved with planetary gearboxes. Because of their positive properties and small design, the gearboxes possess 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 because of low rolling power
Almost unlimited transmission ratio options because of mixture of several planet stages
Appropriate as planetary switching gear due to fixing this or that section of the gearbox
Possibility of use as overriding gearbox
Favorable volume output
On the surface, it may 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 increased, gears are commonly used to accomplish the required result. Gear “reduction” particularly refers to the swiftness of the rotary machine; the rotational quickness of the rotary machine is usually “decreased” by dividing it by a equipment ratio higher than 1:1. A gear ratio higher than 1:1 is usually achieved when a smaller equipment (decreased size) with fewer quantity of the teeth meshes and drives a more substantial gear with greater number of teeth.
Gear reduction gets the opposite influence on torque. The rotary machine’s result torque is improved by multiplying the torque by the apparatus ratio, less some performance losses.
While in many applications gear reduction reduces speed and boosts torque, in other applications gear reduction is used to increase acceleration and reduce torque. Generators in wind generators use gear decrease in this fashion to convert a relatively slow turbine blade rate to a high speed capable of producing electricity. These applications make use of gearboxes that are assembled reverse of those in applications that decrease acceleration and increase torque.
How is gear decrease achieved? Many reducer types can handle attaining gear decrease including, but not limited by, parallel shaft, planetary and right-angle worm gearboxes. In parallel shaft gearboxes (or reducers), a pinion gear with a specific number of the teeth meshes and drives a larger gear with a lot more teeth. The “reduction” or equipment ratio is calculated by dividing the amount of teeth on the large equipment by the amount of teeth on the tiny gear. For instance, if a power motor drives a 13-tooth pinion gear that meshes with a 65-tooth equipment, a reduction of 5:1 is achieved (65 / 13 = 5). If the electric motor speed is usually 3,450 rpm, the gearbox reduces this acceleration by five situations to 690 rpm. If the motor torque is 10 lb-in, the gearbox increases this torque by one factor of five to 50 lb-in (before subtracting out gearbox effectiveness losses).
Parallel shaft gearboxes many times contain multiple gear sets thereby increasing the apparatus reduction. The full total gear reduction (ratio) is determined by multiplying each individual gear ratio from each equipment established stage. If a gearbox includes 3:1, 4:1 and 5:1 gear pieces, 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 quickness reduced to 57.5 rpm by utilizing a 60:1 gearbox. The 10 lb-in electric engine torque would be risen to 600 lb-in (before performance losses).
If a pinion equipment 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 own primary function is to improve the path of rotation instead of decrease the speed or raise the torque.
Calculating the apparatus ratio in a planetary equipment reducer is much less intuitive as it is dependent on the amount of teeth of the sun and ring gears. The planet 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 set with a 12-tooth sun gear and 72-tooth ring gear has a gear ratio of 7:1 ([12 + 72]/12 = 7). Planetary gear models can perform 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 number of teeth on the mating worm wheel. If the worm has two begins and the mating worm wheel has 50 teeth, the resulting equipment ratio is 25:1 (50 / 2 = 25).
Whenever a rotary machine such as for example an engine or electric motor cannot provide the desired output speed or torque, a gear reducer may provide a good solution. Parallel shaft, planetary, right-position worm drives are normal gearbox types for attaining gear reduction. Contact Groschopp today with all of your gear reduction questions.