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 how planetary gears obtained their name.
The elements of a planetary gear train can be split into four main constituents.
The housing with integrated internal teeth is known as a ring gear. In the majority of cases the housing is fixed. The driving sun pinion can be in the heart of the ring gear, and is coaxially arranged in relation to the output. Sunlight pinion is usually attached to a clamping system to be able to provide the mechanical link with the electric motor shaft. During operation, the planetary gears, which are installed on a planetary carrier, roll between the sunlight pinion and the band equipment. The planetary carrier also represents the result shaft of the gearbox.
The sole reason for the planetary gears is to transfer the mandatory torque. The number of teeth does not have any effect on the transmission ratio of the gearbox. The amount of planets can also vary. As the amount of planetary gears improves, the distribution of the strain increases and then the torque that can be transmitted. Raising the number of tooth engagements also reduces the rolling power. Since just area of the total output needs to be transmitted as rolling power, a planetary equipment is extremely efficient. The advantage 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 compact style using planetary gears.
So long as the ring gear includes a continuous size, different ratios could be realized by different the number of teeth of sunlight gear and the amount of the teeth of the planetary gears. The smaller the sun gear, the greater 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 small above and below these ratios. Higher ratios can be acquired by connecting many 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 band 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 band gear. Planetary gearboxes have become extremely important in many areas of mechanical engineering.
They have grown to be particularly more developed in areas where high output levels and fast speeds should be transmitted with favorable mass inertia ratio adaptation. High tranny ratios may also easily be performed with planetary gearboxes. Because of their positive properties and compact design, the gearboxes have 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
Appropriate as planetary switching gear due to fixing this or that part of the gearbox
Possibility of 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 equipment box are replaced with more compact and more dependable sun and planetary kind of gears arrangement and also the manual clutch from manual power teach is replaced with hydro coupled clutch or torque convertor which produced the transmission automatic.
The idea 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) settings 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 remedy providing high torque in low speeds. Our Planetary Gear Motors offer a high efficiency and provide excellent torque output in comparison with other types of gear motors. They can manage a varying load with minimal backlash and are greatest for intermittent duty procedure. With endless reduction ratio choices, voltages, and sizes, Ever-Power Products includes a fully tailored equipment motor option for you.
A Planetary Gear Motor from Ever-Power Products features one of our various types of DC motors in conjunction with among our uniquely designed epicyclic or planetary gearheads. A planetary gearhead consists of an internal gear (sun equipment) that drives multiple outer gears (planet gears) generating torque. Multiple contact points across the planetary gear teach allows for higher torque generation in comparison to one of our spur equipment motors. Subsequently, an Ever-Power planetary gear motor has the ability to handle different load requirements; the more gear stages (stacks), the higher the strain 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 output 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 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 Vehicles (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 one way 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 known as a ring gear. In the majority of cases the casing is fixed. The generating sun pinion can be in the heart of the ring gear, 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 connection to the motor shaft. During procedure, the planetary gears, which are installed on a planetary carrier, roll between your 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 number of teeth has no effect on the transmitting ratio of the gearbox. The amount of planets may also vary. As the number of planetary gears improves, the distribution of the load increases and therefore the torque which can be transmitted. Raising the number of tooth engagements also decreases the rolling power. Since just section of the total result needs 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 style using planetary gears.
Provided that the ring gear includes a continuous size, different ratios could be realized by different the number of teeth of sunlight gear and the amount of teeth of the planetary gears. Small 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 obtained 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 can be overlaid by having a band gear that’s not fixed but is driven in virtually any direction of rotation. It is also possible to repair the drive shaft to be able to grab the torque via the band equipment. 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 must 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 compact 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 many planetary gears
High efficiency because of 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 portion 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. Whenever a rotary machine such as an engine or electrical 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 quickness of the rotary machine; the rotational quickness of the rotary machine can be “reduced” by dividing it by a gear ratio greater than 1:1. A gear ratio higher than 1:1 is usually achieved when a smaller gear (decreased size) with fewer amount of the teeth 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 increased by multiplying the torque by the apparatus ratio, less some performance losses.
While in many applications gear decrease reduces speed and boosts torque, in additional applications gear decrease is used to increase velocity and reduce torque. Generators in wind turbines use gear reduction in this fashion 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 opposite of those in applications that reduce 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 particular number of teeth meshes and drives a larger gear with a greater number of teeth. The “decrease” or equipment ratio is usually calculated by dividing the amount of the teeth on the large gear by the amount of teeth on the tiny gear. For example, if a power motor drives a 13-tooth pinion gear that meshes with a 65-tooth equipment, a reduced amount of 5:1 is definitely achieved (65 / 13 = 5). If the electrical motor speed is 3,450 rpm, the gearbox reduces this speed by five instances to 690 rpm. If the engine torque is certainly 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 models thereby increasing the gear reduction. The total gear decrease (ratio) is determined by multiplying each individual equipment ratio from each gear set stage. If a gearbox consists of 3:1, 4:1 and 5:1 gear models, the 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 decreased to 57.5 rpm by using a 60:1 gearbox. The 10 lb-in electric engine torque would be increased to 600 lb-in (before effectiveness losses).
If a pinion equipment and its mating equipment have the same number of teeth, no reduction occurs and the apparatus ratio is 1:1. The gear is called an idler and its main function is to improve the direction of rotation instead of decrease the speed or raise the torque.
Calculating the apparatus ratio in a planetary gear reducer is less intuitive since it is dependent on the number 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 amount of teeth on the sun gear. For instance, a planetary set 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 may 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 offers 50 tooth, the resulting equipment 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 equipment reducer may provide a great choice. Parallel shaft, planetary, right-position worm drives are common gearbox types for achieving gear reduction. Contact Groschopp today with all of your gear reduction questions.