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 takes place in analogy to the orbiting of the planets in the solar program. This is how planetary gears obtained their name.
The elements 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 traveling sun pinion is usually in the heart of the ring gear, and is coaxially organized with regards to the output. Sunlight pinion is usually mounted on a clamping system in order to offer the mechanical connection to the motor shaft. During procedure, the planetary gears, which are installed on a planetary carrier, roll between the sunlight pinion and the band 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 has no effect on the transmitting ratio of the gearbox. The number of planets may also vary. As the amount of planetary gears boosts, the distribution of the strain increases and then the torque which can be transmitted. Increasing the amount of tooth engagements also decreases the rolling power. Since just part of the total output needs to be transmitted as rolling power, a planetary equipment is extremely efficient. The benefit of a planetary gear compared to an individual spur gear is based on this load distribution. It is therefore possible to transmit high torques wit
h high efficiency with a compact style using planetary gears.
So long as the ring gear includes a constant size, different ratios could be realized by various the number of teeth of sunlight gear and the amount of tooth of the planetary gears. The smaller the sun gear, 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 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 speak of multi-stage gearboxes.
With planetary gearboxes the speeds and torques can be overlaid by having a ring gear that’s not set but is driven in virtually any direction of rotation. It is also 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 regions 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 their positive properties and small 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 several planetary gears
High efficiency because of low rolling power
Almost unlimited transmission ratio options due to combination of several planet stages
Appropriate as planetary switching gear because of fixing this or that section 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 where parallel shafts and gears arrangement from manual gear box are replaced with an increase of compact and more dependable sun and planetary kind of gears arrangement and also the manual clutch from manual power train can be 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 an ideal arrangement of objects.
The epicyclic gearbox usually comes with the P N R D S (Parking, Neutral, Reverse, Drive, Sport) settings which is obtained by fixing of sun and planetary gears according to the require of the drive.
Ever-Power Planetary Gear Motors are an inline solution providing high torque at 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 manage a different load with minimal backlash and are greatest for intermittent duty operation. With endless reduction 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 numerous kinds of DC motors coupled with among our uniquely designed epicyclic or planetary gearheads. A planetary gearhead consists of an internal gear (sun equipment) that drives multiple external gears (planet gears) producing torque. Multiple contact factors over the planetary gear teach permits higher torque generation compared to among our spur gear motors. Subsequently, an Ever-Power planetary gear motor has the capacity 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
Capability to Handle Large Reduction Ratios
High Power Density
Applications
Our Planetary Gear Motors deliver exceptional torque output and effectiveness in a concise, low noise style. These characteristics in addition to our value-added capabilities makes Ever-Power s gear motors a fantastic 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 run 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 one way planetary gears obtained their name.
The parts of a planetary gear train can be divided into four main constituents.
The housing with integrated internal teeth is actually a ring gear. In nearly all cases the housing is fixed. The traveling sun pinion can be in the heart of the ring equipment, and is coaxially arranged with regards to the output. The sun pinion is usually attached to a clamping system in order to offer the mechanical connection to the electric motor shaft. During procedure, the planetary gears, which are mounted on a planetary carrier, roll between your sunlight pinion and the band 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 may also vary. As the number of planetary gears boosts, the distribution of the strain increases and then the torque which can be transmitted. Increasing the amount of tooth engagements also decreases the rolling power. Since only portion of the total output has to be transmitted as rolling power, a planetary gear is extremely efficient. The benefit of a planetary equipment 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 compact style using planetary gears.
Provided that the ring gear includes a constant size, different ratios can be realized by different the number of teeth of sunlight gear and the amount of the teeth of the planetary gears. Small the sun equipment, 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 obtained by connecting many planetary levels in series in the same band gear. In cases like this, we speak of multi-stage gearboxes.
With planetary gearboxes the speeds and torques could be overlaid by having a ring gear that is not set but is driven in virtually any direction of rotation. It is also possible to repair the drive shaft to be able to pick up the torque via the ring equipment. Planetary gearboxes have grown to be 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 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 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
Almost unlimited transmission ratio options because of mixture of several planet stages
Appropriate as planetary switching gear because of fixing this or that section of the gearbox
Chance for 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. When a rotary machine such as an engine or electrical motor needs the result speed decreased and/or torque increased, gears are commonly utilized to accomplish the required result. Gear “reduction” specifically refers to the swiftness of the rotary machine; the rotational acceleration of the rotary machine is definitely “reduced” by dividing it by a gear ratio greater than 1:1. A gear ratio greater than 1:1 is usually achieved whenever 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 has the opposite effect on torque. The rotary machine’s output torque is improved by multiplying the torque by the apparatus ratio, less some performance losses.
While in many applications gear reduction reduces speed and increases torque, in additional applications gear reduction is used to increase rate and reduce torque. Generators in wind generators use gear decrease in this manner to convert a relatively slow turbine blade swiftness to a high speed capable of producing electricity. These applications make use of gearboxes that are assembled opposite of these in applications that reduce quickness and increase torque.
How is gear decrease achieved? Many reducer types are capable of 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 particular number of the teeth meshes and drives a larger gear with a lot more teeth. The “decrease” or gear ratio can be calculated by dividing the number of teeth on the large equipment by the amount of teeth on the tiny gear. For example, if an electric motor drives a 13-tooth pinion equipment that meshes with a 65-tooth equipment, a reduction of 5:1 can be achieved (65 / 13 = 5). If the electrical motor speed is certainly 3,450 rpm, the gearbox reduces this swiftness by five occasions to 690 rpm. If the engine torque is definitely 10 lb-in, the gearbox raises this torque by one factor of five to 50 lb-in (before subtracting out gearbox efficiency losses).
Parallel shaft gearboxes many times contain multiple gear units thereby increasing the apparatus reduction. The total gear reduction (ratio) is determined by multiplying each individual gear ratio from each equipment arranged stage. If a gearbox includes 3:1, 4:1 and 5:1 gear sets, the total ratio is 60:1 (3 x 4 x 5 = 60). Inside our example above, the 3,450 rpm electric engine would have its rate decreased to 57.5 rpm by using a 60:1 gearbox. The 10 lb-in electric engine torque would be risen to 600 lb-in (before effectiveness losses).
If a pinion gear and its mating equipment have the same number of teeth, no reduction occurs and the apparatus ratio is 1:1. The apparatus is named an idler and its own principal function is to improve the path of rotation rather than reduce the speed or increase the torque.
Calculating the apparatus ratio in a planetary gear reducer is much less intuitive as it is dependent upon the amount of teeth of sunlight and band gears. The earth gears act as idlers and don’t affect the apparatus ratio. The planetary equipment ratio equals the sum of the amount of teeth on the sun and ring gear divided by the number of teeth on sunlight gear. For instance, a planetary arranged with a 12-tooth sun gear and 72-tooth ring gear includes a gear 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 may be used.
The gear decrease in a right-angle worm drive would depend on the number 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 provides 50 tooth, the resulting gear ratio is 25:1 (50 / 2 = 25).
Whenever a rotary machine such as for example an engine or electric engine cannot provide the desired output quickness or torque, a gear reducer may provide a good solution. Parallel shaft, planetary, right-angle worm drives are normal gearbox types for achieving gear reduction. Get in touch with Groschopp today with all of your gear reduction questions.