{"id":2073,"date":"2020-06-26T04:12:58","date_gmt":"2020-06-26T04:12:58","guid":{"rendered":"http:\/\/gear-coupling.top\/?p=2073"},"modified":"2022-11-17T06:42:53","modified_gmt":"2022-11-17T06:42:53","slug":"planetary-gear-reduction","status":"publish","type":"post","link":"https:\/\/gear-coupling.top\/pl\/application\/planetary-gear-reduction\/","title":{"rendered":"Planetary Gear Reduction"},"content":{"rendered":"

Many \u201cgears\u201d are used for automobiles, however they are also used for many additional machines. The most typical one may be the \u201ctranny\u201d that conveys the energy of engine to tires. There are broadly two functions the transmission of a car plays : one is usually to decelerate the high rotation swiftness emitted by the engine to transmit to tires; the additional is to change the reduction ratio relative to the acceleration \/ deceleration or generating speed of a car.
The rotation speed of an automobile\u2019s engine in the general state of driving amounts to 1 1,000 – 4,000 rotations each and every minute (17 – 67 per second). Because it is impossible to rotate tires with the same rotation swiftness to run, it is required to lower the rotation speed using the ratio of the amount of gear teeth. This kind of a role is called deceleration; the ratio of the rotation rate of engine and that of wheels is named the reduction ratio.
Then, why is it necessary to alter the reduction ratio relative to the acceleration \/ deceleration or driving speed ? This is because substances need a large force to start moving however they usually do not require this kind of a sizable force to keep moving once they have started to move. Automobile could be cited as a good example. An engine, nevertheless, by its nature can\u2019t so finely alter its output. For that reason, one adjusts its output by changing the reduction ratio utilizing a transmission.
The transmission of motive power through gears quite definitely resembles the principle of leverage (a lever). The ratio of the amount of the teeth of gears meshing with one another can be considered as the ratio of the space of levers\u2019 arms. That is, if the decrease ratio is large and the rotation acceleration as output is low in comparison compared to that as insight, the energy output by tranny (torque) will be large; if the rotation swiftness as output is not so lower in comparison compared to that as insight, on the other hand, the energy output by transmitting (torque) will be little. Thus, to change the decrease ratio utilizing transmitting is much comparable to the principle of moving things.
After that, how does a transmission modify the reduction ratio ? The answer is based on the mechanism called a planetary equipment mechanism.
A planetary gear mechanism is a gear system consisting of 4 components, namely, sunlight gear A, several world gears B, internal equipment C and carrier D that connects planet gears as observed in the graph below. It has a very complex framework rendering its design or production most difficult; it can realize the high decrease ratio through gears, nevertheless, it really is a mechanism suited to a reduction mechanism that requires both little size and powerful such as for example transmission for automobiles.
In a planetary gearbox, many teeth are engaged at once, which allows high speed decrease to be achieved with fairly small gears and lower inertia reflected back to the motor. Having multiple teeth talk about the load also allows planetary gears to transmit high levels of torque. The combination of compact size, large speed decrease and high torque transmitting makes planetary gearboxes a favorite choice for space-constrained applications.
But planetary gearboxes do involve some disadvantages. Their complexity in style and manufacturing can make them a more expensive solution than various other gearbox types. And precision manufacturing is really important for these gearboxes. If one planetary equipment is positioned closer to sunlight gear compared to the others, imbalances in the planetary gears can occur, resulting in premature wear and failure. Also, the compact footprint of planetary gears makes warmth dissipation more difficult, therefore applications that run at high speed or encounter continuous operation may require cooling.
When utilizing a \u201cstandard\u201d (i.electronic. inline) planetary gearbox, the motor and the driven equipment should be inline with each other, although manufacturers provide right-angle designs that integrate other gear sets (often bevel gears with helical the teeth) to provide an offset between your input and output.
Input power (max)27 kW (36 hp)
Input speed (max)2800 rpm2
Output torque (intermittent)12,880 Nm(9,500 lb-ft)
Output torque (continuous)8,135 Nm (6,000 lb-ft)
1 Actual ratio is dependent on the drive configuration.
2 Max input speed related to ratio and max result speed
3 Max radial load placed at optimum load position
4 Weight Planetary Gear Reduction<\/a> varies with configuration and ratio selected
5 Requires tapered roller planet bearings (unavailable with all ratios)
Approximate dry weight100 -181 kg (220 – 400 lb)4
Radial load (max)14,287kg (31,500 lb)3
Drive typeSpeed reducer
Hydraulic engine input SAE C or D hydraulic
Precision Planetary Reducers
This standard range of Precision Planetary Reducers are ideal for use in applications that demand powerful, precise positioning and repeatability. They were specifically developed for make use of with state-of-the-art servo engine technology, providing limited integration of the motor to the unit. Style features include mounting any servo motors, regular low backlash, high torsional stiffness, 95 to 97% efficiency and quiet running.
They can be purchased in nine sizes with decrease ratios from 3:1 to 600:1 and result torque capacities up to 16,227 lb.ft. The output could be provided with a solid shaft or ISO 9409-1 flange, for mounting to rotary or indexing tables, pinion gears, pulleys or other drive elements without the need for a coupling. For high precision applications, backlash levels right down to 1 arc-minute are available. Right-angle and input shaft versions of the reducers are also available.
Usual applications for these reducers include precision rotary axis drives, traveling gantries & columns, material handling axis drives and electronic line shafting. Industries served include Material Handling, Automation, Aerospace, Machine Tool and Robotics.
Unit Design &
Construction
Gearing: Featuring case-hardened & surface gearing with minimal wear, low backlash and low sound, making them the the majority of accurate and efficient planetaries available. Standard planetary design has three world gears, with a higher torque version using four planets also obtainable, please start to see the Reducers with Output Flange chart on the Unit Ratings tab beneath the \u201c+\u201d unit sizes.
Bearings: Optional result bearing configurations for software particular radial load, axial load and tilting minute reinforcement. Oversized tapered roller bearings are standard for the ISO Flanged Reducers.
Housing: Single piece metal housing with integral ring gear provides better concentricity and eliminate speed fluctuations. The casing can be fitted with a ventilation module to increase input speeds and lower operational temps.
Output: Available in a good shaft with optional keyway or an ISO 9409-1 flanged interface. We offer a wide variety of standard pinions to install right to the output design of your choice.
Unit Selection
These reducers are typically selected predicated on the peak cycle forces, which often happen during accelerations and decelerations. These routine forces rely on the driven load, the velocity vs. period profile for the routine, and any other external forces functioning on the axis.
For application & selection assistance, please call, fax or email us. The application information will be examined by our engineers, who’ll recommend the best solution for your application.
Ever-Power Automation\u2019s Gearbox product lines offer high precision in affordable prices! The Planetary Gearbox product offering includes both In-Line and Right-Angle configurations, built with the look goal of offering a cost-effective gearbox, without sacrificing quality. These Planetary Gearboxes are available in sizes from 40mm to 180mm, perfect for motors ranging from NEMA 17 to NEMA 42 and larger. The Spur Gearbox collection provides an efficient, cost-effective option appropriate for Ever-Power Automation\u2019s AC Induction Gear Motors. Ever-Power Automation\u2019s Gearboxes can be found in up to 30 different equipment ratios, with torque ratings up to 10,488 in-pounds (167,808 oz-in), and so are compatible with most Servo,
SureGear Planetary Gearboxes for Little Ever-Power Motors
The SureGear PGCN series is a superb gearbox value for servo, stepper, and other movement control applications requiring a NEMA size input\/output interface. It includes the best quality available for the price point.
Features
Wide range of ratios (5, 10, 25, 50, and 100:1)
Low backlash of 30 arc-min or less
20,000 hour service life
Free of maintenance; requires no additional lubrication
NEMA sizes 17, 23, and 34
Includes hardware for installation to SureStep stepper motors
Optional shaft bushings available for \"\"mounting to other motors
1-year warranty
Applications
Material handling
Pick and place
Automation
Packaging
Various other motion control applications requiring a Ever-Power input\/output
Spur gears are a type of cylindrical equipment, with shafts that are parallel and coplanar, and teeth that are directly and oriented parallel to the shafts. They\u2019re arguably the easiest and most common kind of gear – easy to manufacture and suitable for a range of applications.
One\u2019s tooth of a spur gear have got an involute profile and mesh one particular tooth simultaneously. The involute type implies that spur gears just generate radial forces (no axial forces), however the method of tooth meshing causes ruthless on the gear one’s teeth and high noise creation. For this reason, spur gears are often used for lower swiftness applications, although they could be utilized at nearly every speed.
An involute devices tooth carries a profile this is the involute of a circle, which implies that since two gears mesh, they get in touch with at a person point where the involutes satisfy. This aspect actions along the tooth areas as the gears rotate, and the kind of force ( known as the line of actions ) is definitely tangent to both base circles. Therefore, the gears stick to the essential regulation of gearing, which promises that the ratio of the gears\u2019 angular velocities must stay continuous through the entire mesh.
Spur gears could possibly be produced from metals such as for example steel or brass, or from plastics such as for example nylon or polycarbonate. Gears produced from plastic produce much less audio, but at the trouble of power and loading capability. Unlike other devices types, spur gears don\u2019t encounter high losses due to slippage, so they often times have high transmission functionality. Multiple spur gears can be employed in series ( known as a equipment teach ) to attain large reduction ratios.
There are two primary types of spur gears: external and internal. Exterior gears possess one’s teeth that are cut externally surface area of the cylinder. Two exterior gears mesh with each other and rotate in reverse directions. Internal gears, in contrast, have the teeth that are cut inside surface area of the cylinder. An external gear sits in the internal gear, and the gears rotate in the same path. Because the shafts are positioned closer together, internal gear assemblies are more compact than external equipment assemblies. Internal gears are mainly used for planetary equipment drives.
Spur gears are generally seen as best for applications that want speed decrease and torque multiplication, such as for example ball mills and crushing gear. Examples of high- velocity applications that make use of spur gears – despite their high noise levels – include consumer home appliances such as washing machines and blenders. And while noise limits the use of spur gears in passenger automobiles, they are often used in aircraft engines, trains, and even bicycles.
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Many \u201cgears\u201d are used for automobiles, however they are also used for many additional machines. The most typical one may be the \u201ctranny\u201d that conveys the energy of engine to tires. There are broadly two functions the transmission of a car plays : one is usually to decelerate the high rotation swiftness emitted by the […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2073","post","type-post","status-publish","format-standard","hentry","category-gear-coupling"],"_links":{"self":[{"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/posts\/2073","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/comments?post=2073"}],"version-history":[{"count":1,"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/posts\/2073\/revisions"}],"predecessor-version":[{"id":2074,"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/posts\/2073\/revisions\/2074"}],"wp:attachment":[{"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/media?parent=2073"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/categories?post=2073"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gear-coupling.top\/pl\/wp-json\/wp\/v2\/tags?post=2073"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}