Zhejiang Laifual Drive Co., Ltd

Harmonic Gearbox(2022年04月01日)

laifualgroup — 2022-03-31T12:35:57+0900

https://www.laifualgroup.com/products/harmonic-gearbox/
Harmonic Gearbox

Laifual Drive adopts our newest developed "LS" tooth profile, which improves strain wave reducer's comprehensive performance a lot. Compared to the original "δ" tooth profile, the load capacity of our power harmonic drive china reducers/gearboxes increases 15%; temperature rise decreases 8-10 ℃; gear's fatigue pitting contact area decreases more than 30%; a lifetime is more than 15000 hours.

Composition of Harmonic Gear Reducer
Harmonic gear reducer has three basic components：a wave generator,a flexspline and a circular spline.

01Wave Generator
Harmonic Gear Reducer is made up of a ball bearing and an elliptical cam. The wave generator is usually attached to the input end, the inner ring of the harmonic drive bearing is fixed around the cam causing the outer ring of the bearing deforms to an elliptical shape.

02Flex Spline
It is an elastic thin-walled component with gear teeth on the outer surface. Harmonic Gear Reducer is usually fitted to the output end.

03Circular Spline
It is a rigid steel ring with internal teeth. Harmonic Gear Reducer usually has two more teeth than the flex spline, and generally mounted onto a housing.

Harmonic Drive Working Principle
As a china harmonic reducer , the harmonic gear reducer is often in status as the wave generator drives, the circular spline is fixed, and the flex spline is output end.

When the harmonic wave generator is put inside of the flex spline, the flex spline is forced into an elliptical shape causing the flex spline teeth to engage with the tooth profile of the circular spline along the major axis of the ellipse, with the teeth completely disengaged across the minor axis of the ellipse.

The rotation of the wave generator makes the flex spline deform continuously, the teeth change operating state in the process of engagement and disengagement, thus the power harmonic drive transmission between wave generator and flex spline is realized.

Characteristics of Harmonic Gear Reducer
High accuracy
A good percentage of harmonic gear reducer's teeth are meshed at all times and are engaged at two zones 180 degrees apart. This means influences of tooth pitch errors and accumulated pitch errors on rotational accuracy are neutralized, which assures high positional and rotational accuracy.

High speed reduction ratio
A harmonic gear reducer has high single-stage reduction ratios also known as harmonic drive gear ratio or harmonic drive ratio of 1/30-1/500. Three basic components along same axle without complex structures can provide high reduction ratios.

High torque capacity
Each tooth subjected to a negligible amount of force yet provides a high torque capacity because of the way the teeth come into contact with each other and because a good percentage of the teeth in the flex spline is engaged at all times.

Small-sized and light weight
While being less the size of conventional gearing mechanisms and less the weight, the harmonic gear reducer provides the same levels of torque and speed reduction ratios as its conventional counterparts enabling machinery and equipment to be made smaller and lighter.

Superior efficiency and long life time
As a professional harmonic drive actuator company and strain wave gear manufacturer in China, Laifual Drive produces harmonic drive reducer with superior harmonic drive efficiency and long service time.

Quiet and minimal vibration operation
Laifual Drive's harmonic drive reducers also operate with quiet and minimal vibration.

Laifual Drive Harmonic Gearbox & Planetary Gearbox(2022年04月01日)

laifualgroup — 2022-03-31T12:35:21+0900

https://www.laifualgroup.com/products/

Laifual Drive prides itself on delivering innovative solutions for our customers in varying industry sectors, applications, and locations all over the world. Our gearbox products are aimed at providing optimal performance solutions for industry partners.

How does a Harmonic Drive Work?
The rotation movement comes from the input shaft, which can be a servo motor shaft. This is connected to an element called "harmonic wave generator", which has an elliptical shape and is surrounded by an elliptical ball bearing. When the axis rotates, the edge changes position, so it looks like a motion wave is being generated. The part is inserted into a flexible spline made of torsionally rigid but flexible material. The material absorbs this fluctuation by bending and forming an ellipse according to the rotation of the input shaft. The outer edge of this flexible spline has gear teeth suitable for transmitting high loads without any problems. In order to transmit these loads, the flexspline is installed in a circular spline, which is a circular gear with internal teeth. The outer ring is rigid, and its inner diameter is slightly larger than the main axis of the ellipse formed by the flexspline. This means that the circular spline does not assume the elliptical shape of the other two components, but simply meshes its inner teeth with the teeth on the outer flexspline, causing the flexspline to rotate.

The speed depends on the speed of the input shaft and the difference in the number of teeth between the flexspline and the circular spline. The number of teeth of the flexspline is less than that of the circular spline, so it can rotate in the opposite direction at a smaller rate than the input shaft. The reduction ratio is: (the number of flexspline teeth-the number of circular spline teeth)/the number of flexspline teeth. The difference in the number of teeth can be changed to adapt to different reduction ratios, thereby adapting to different professional needs and requirements of the harmonic gearhead.

Robot Gearbox(2022年04月01日)

laifualgroup — 2022-03-31T12:34:55+0900

https://www.laifualgroup.com/gearbox-in-robotics-automation.html

Why do robots use harmonic reducer but not ordinary reducer? Because the robot requires a small size and high precision. Only the harmonic reducer can reach high precision, small gap, large deceleration ratio, and small size. In line with the needs of small and medium-sized robot flexibility, harmonic and planetary robot gearbox are typically used on a robotic arm joint.

What is a gearbox in a robot?
Robot gearboxes are part of the joints in robot arms.The joints ensure maneuverability while the gearboxes determine the speed and direction of movement. They are the link between the motor that supplies the drive energy and a machine component that has the task of executing a planned movement.

How does a robot gearbox work?
The transmission ratio of the harmonic drive reducer is larger than the ordinary reducer. Since the number of meshing teeth is large, its carrying capacity and transmission are very high; the power range from a few watts to several tens of kilowatts, and it has no impact and noise; The harmonic reducer can achieve a space mechanism for passing motion and power such as sealing harmonic transmission deceleration devices, and drives spatial mechanisms operating in vacuum, corrosion, and other harmful media; in addition to this, harmonic transmission can also be used Implement high-speed speed motion such as hand generators, wind turbines, and convenient implementation of differential transmission.

Robot Gearbox Design
60% to 70% of the robot's rotary joints use harmonic gears. The harmonic gear transmission mechanism is composed of three main parts: rigid gear, harmonic generator and flexible gear. When working, the rigid gear is fixedly installed, each tooth is evenly distributed on the circumference, and the flexible gear with external tooth shape rotates along the internal teeth of the rigid gear. The flexible gear has two fewer teeth than the rigid gear, so the flexible gear rotates through the corresponding angle of the two teeth in the opposite direction for each revolution of the rigid gear. The harmonic generator has an elliptical profile, and the balls mounted on the harmonic generator are used to support the flexible gear, and the harmonic generator drives the flexible gear to rotate and make it plastically shaped. When rotating, only a few teeth of the elliptical end of the flexible gear mesh with the rigid gear. Only in this way, the flexible gear can freely rotate through a certain angle relative to the rigid gear.

Robot Arm Gearbox

The Characteristics of Laifual's Robot Planetary Gearboxes and Harmonic Drives in Robotics
As a professional robot planetary gearboxes manufacturer, our harmonic and planetary drive gearboxes have the advantages of lightweight, free gear gap, high torque capacity, etc. They can be widely used in industrial robots, imitation robots, semiconductor liquid crystal production device, photovoltaic equipment, optical instruments, precision machine tools and other robotic cutting-end areas.

For more information, please feel free to contact us!

Harmonic Gearbox & Planetary Gearbox in Machine Tools(2022年04月01日)

laifualgroup — 2022-03-31T12:34:20+0900

https://www.laifualgroup.com/gearbox-in-machine-tools.html

The Relationship Between Machinery Gears and Machinery Industry
As for the typical tasks of machine devices, such as milling, grinding, drilling and tuning, all of these tasks are closely related to the requirements of high precision, high rigidity and torques. Thus, as for the gearboxes in the machinery industry, their precision is extremely significant. Moreover, since different cases normally hold different needs and demands, custom machinery gearboxes are of great importance so that different machinery needs can be satisfied individually.

Machine Gearbox

The Wide Application of Laifual Machine Gears
Having different types of machine harmonic gears for sale, Laifual produces high precision harmonic reducer that has the characteristics of low-temperature rise, low starting torque, high reliability, big torque, long lifetime, big speed ratio, small size, etc., which can be widely used for precise applications in the machine tool industry.

Gearboxes, such as milling machine gearbox, plastic extruder gearbox, drill machine gearbox, mini lathe gearbox, are all available at here. Contact us now!

As one of the professional aerospace gear manufacturers in China, Laifual can offer you high-quality electric planetary reducer gearbox that suit your own needs.

Aerospace Gearboxes(2022年04月01日)

laifualgroup — 2022-03-31T12:33:55+0900

https://www.laifualgroup.com/gearbox-in-aerospace-defense.html

Harmonic gearbox's reliability and quality make it possible in the defence industry. Using special materials, our defence and aerospace gears have extremely light constructions. We also employ dry lubrication so as to meet the requirements of aerospace and defence purposes.

What are Aerospace Gearboxes？
Aerospace gearboxes are used in aircraft and engine power transmission. The main reducer, intermediate reducer and tail reducer in the helicopter transmission system are used for the power transmission of the aircraft, and the propeller engine reducer and the reducer in the turboshaft engine body are mainly used for the engine power transmission. In addition, it is used as auxiliary transmission for various types of engines and aircraft accessory transmissions.

Why Use Aero Gear for Defense and Aerospace Gearboxes?
Aviation engine and gearboxes are extremely high applications that require extremely high reliability and tightness tolerances. Whether it is the component for a passenger, a spacecraft or a space probe - all the gearboxes of flying objects have to overcome the tremendous pressure the outside has placed on them. They need to have excellent performance even in air. In addition, they also need to have high positional accuracy and repetition accuracy. Thus, using reliable and light high-performance defence and aerospace gears is then become a must.

Aerospace Gearboxes

Application of Laifual Drive Aerospace Gearboxes
The application of Laifual Drive harmonic drive gearbox in the industry of aerospace and defence industry is greatly varied. For instance, with the characteristics of lightweight, durable and dry-lubricated, our harmonic drive actuators can be widely used in satellites, so as to pioneer the orientation of the solar panels. With years of experience in aerospace, we can also provide you with innovative solutions for different kinds of national and civil aeroplanes.

As one of the professional aerospace gear manufacturers in China, Laifual can offer you high-quality electric motor planetary gearboxes that suit your own needs.

Strain Wave Gear Applications(2022年04月01日)

laifualgroup — 2022-03-31T12:33:21+0900

https://www.laifualgroup.com/applied-industries-of-gearbox/

As a professional gearbox manufacturer, Laifual Drive provides various kinds of high-quality harmonic and planetary gearboxes. With consistent quality, our products can offer a variety of harmonic drive applications in different industries.

Harmonic Drives In Robotics & Automation
Laifual Drive's high precision motion control technology and advanced products are widely used for robotics. We are proud to offer complete motion control solutions to robotic applications worldwide.

Harmonic Gearbox & Planetary Gearbox In Medical Equipment
Laifual Drive's high precision combined with a compact body makes us be the ideal solution provider to the medical industry. Reliable, cost-effective to make our future brighter.

Defense & Aerospace Gearboxes
Harmonic gearbox's reliability and quality make it possible in the defense industry. Special materials, extremely light constructions, or dry lubrication are required for aerospace and defense purposes.

Machinery Gears
Laifual has rich experience in precision motion control solutions. Our high precision harmonic reducer has the characteristics of low-temperature rise, low starting torque, high reliability, big torque, long lifetime, big speed ratio, small size, etc., which can be widely used for precise applications in the machine tool industry.

Power Transmission Gearboxes in Paper Industry
Laifual's products have high durability and precision. Our customized solutions will allow you to obtain top performance and minimize the overall machine costs.

Harmonic & Planetary Gearboxes In Packaging & Food Processing
The food & beverage sector is an industrial area that plays a major role in the world economy, as well as in that of the individual countries. The major companies that manufacture machinery in the field choose to use our gear reducers for their high performance, reliability, easy maintenance, and handling.

Harmonic Gearbox & Planetary Gearbox in Metal Machine Tools
Laifual's products have high durability and precision. Our customized solutions will allow you to obtain top performance and minimize the overall machine costs.

Analysis of the Structure and Working Principle of the Harmonic Reducer of the Core Component of the Robot(2022年04月01日)

laifualgroup — 2022-03-31T12:32:53+0900

https://www.laifualgroup.com/analysis-of-the-structure-and-working-principle-of-the-harmonic-reducer-of-the-core-component-of-the-robot.html

1.Harmonic reducer for industrial robots

Industrial robots are widely used in automobile manufacturing, electrical equipment production, food machinery processing and other industrial manufacturing. At present, the cost of global robots is mainly composed of: about 35% of the reducer, about 20% of the servo, about 15% of the control system, and the robot body The mechanical processing is only about 15%.

The precision reducer used in the robotics industry can be divided into three types: RV reducer, harmonic reducer and planetary reducer, the three of which account for approximately 40%, 40%, and 20% in the market.

The speed reduction of the reducer is realized by the simple principle that the speed is inversely proportional to the number of teeth and the transmission between the large and small gears. But to achieve a large transmission ratio, if we use cylindrical gears that we usually see, the volume of the entire gear reducer will be very large. If it is to be as small as possible, what should we do?

Harmonic reducer is to embed the gear inside.

2. Structure and harmonic drive working principle

The harmonic reducer is mainly composed of four basic components: wave generator, flexible gear, flexible bearing, and rigid gear.

Harmonic drive reducer is a gear transmission that relies on the wave generator to be assembled with flexible bearings to make the flexible gear produce controllable elastic deformation and mesh with the rigid gear to transmit movement and power.

When the wave generator continuously rotates, the deformation of the flexspline is constantly changing, so that the meshing state of the flexspline and the rigid wheel is also constantly changed, from engagement, engagement, engagement, disengagement, re-engaging. So as to realize the slow rotation of the flexible wheel relative to the rigid wheel in the opposite direction of the wave generator.

The technical difficulties of the harmonic reducer are mainly reflected in the service life and machining accuracy of the flexspline.

Working Principles of Planetary Gears(2021年12月03日)

laifualgroup — 2021-11-30T12:44:53+0900

https://www.laifualgroup.com/working-principles-of-planetary-gears.html

Laifual designs and manufactures harmonic gearbox and planetary reducer gearbox for all the industrial areas with competence, innovation, and unique professionalism. As one of the mature gearbox companies in China, Laifual exceeds customer expectations with the highest level of detailed engineering, lean manufacturing, and quality assurance available in the global marketplace.

Working Principles of Planetary Gears
Planetary gear is a kind of gear structure, in which usually one or more external gears rotate around a sun gear, just like a planet revolves around the sun, hence the name "planetary gear".

Ⅰ. The planetary gear set is a transmission mechanism of autobiography plus revolution

The structure of the planetary gear set is the same as that of the solar system. There is the sun in the middle and several large planets next to it. The planets revolve by themselves and revolve around the sun at the same time. Due to the number of gear, there will be a speed change effect, so as to achieve the purpose of speed change/deceleration.

Ⅱ. Planetary gears principles of operation

Most of the gears we know are gears with a fixed axis of rotation. For example, mechanical clocks, ordinary mechanical gearboxes, and reducers. Although all the gears above are rotating, their rotation center (coincident with the center of the circle) is often mounted on the casing through a bearing. Therefore, their rotation axis are fixed relative to the casing, so they are also called "fixed shaft gear transmission."

Compared to being fixed, there must be movement. Correspondingly, there is a less well-known type of gears called "planetary gears" whose axis of rotation is not fixed, but is mounted on a rotatable bracket. Planetary gears can not only rotate around their own rotating shafts like fixed-axis gears, but their rotating shafts also rotate with the blue bracket around the axis of other gears. The rotation around its own axis is called "rotation", and the rotation around the axis of other gears is called "revolution", just like the planets in the solar system, hence the name "planetary gear".

Just like the solar system, those gears with fixed axles that become the center of planetary gear revolution are called "sun gears", which are red. There are usually two meshing points on a planetary gear or on two mutually fixed planetary gears, which are in relationship with the two sun gears respectively. The axis of the gray internal gear coincides with the axis of the red external gear, which is also the sun gear.

The principle of gear transmission with a fixed axis is very simple. In a pair of gears that mesh with each other, one gear is used as the driving wheel, and power is transmitted from it, and the other gear is used as a driven wheel, and the power is output from it. Some gears are only used as a transfer station, which means one side meshes with the driving wheel and the other side meshes with the driven wheel, and the power passes through it.

What Are the Characteristics of Harmonic Drive of Harmonic Reducer?(2021年12月02日)

laifualgroup — 2021-11-30T12:44:06+0900

https://www.laifualgroup.com/what-are-the-characteristics-of-harmonic-drive-of-harmonic-reducer.html

What Are the Characteristics of Harmonic Drive of Harmonic Reducer?
If we have started to learn about harmonic gear drives, we will know that it is a power transmission device. It is called power harmonic drive because the flexible part will be deformed by force during its operation and there will be harmonics. When understanding the relevant information of the harmonic gear drive, we must understand what the characteristics of the harmonic gear drive are.

In fact, harmonic gear drives have many characteristics. As we all know, the harmonic gear transmission can be used as a power source, but if we study carefully, we will find that the harmonic gear transmission can be used as a speed increasing device or a reduction device. The energy provided can accomplish many tasks, so they can play a role in many situations.

1. The transmission ratio of the harmonic gear transmission device is very large
Although the harmonic gear transmission has such a high harmonic drive ratio, its volume is usually relatively small, and the number of parts constituting it is relatively small, making the harmonic gear transmission possible. With convenient installation, simple maintenance, and small volume of the harmonic drive, it has high work efficiency, basically between 92% to 96%.

2. The carrying capacity of the harmonic gear drive is very high
Because the inner flexible wheel and the steel wheel are meshed together by multiple teeth, this makes the wear surface of the gear more uniform during the working process, and there will be no damage. The gap between the two gears can also be adjusted. When the torsional rigidity of the flexible wheel is large, high-precision matching can be achieved between the two gears driven by the harmonic gear. In the process of harmonic gear transmission, the power transmission between the sealed space and the external environment can be realized.

It is precisely because the harmonic gear drive has so many characteristics, it can have such a wide range of applications. People should learn more details about it.

Harmonic Drives In Robotics & Automation(2021年12月22日)

laifualgroup — 2021-11-30T12:43:39+0900

https://www.laifualgroup.com/gearbox-in-robotics-automation.html

Harmonic Gearbox & Planetary Robot Gearbox in Industrial Robots
Why do robots use harmonic reducer but not ordinary reducer? Because the robot requires a small size and high precision. Only the harmonic reducer can reach high precision, small gap, large deceleration ratio, and small size. In line with the needs of small and medium-sized robot flexibility, harmonic robot and robot planetary gearbox are typically used on a robotic arm joint.

The Advantages of Robot Planetary Gearboxes and Harmonic Drives in Robotics
The transmission ratio of the harmonic drive reducer is larger than the ordinary reducer. Since the number of meshing teeth is large, its carrying capacity and transmission are very high; the power range from a few watts to several tens of kilowatts, and it has no impact and noise; The harmonic reducer can achieve a space mechanism for passing motion and power such as sealing harmonic transmission deceleration devices, and drives spatial mechanisms operating in vacuum, corrosion, and other harmful media; in addition to this, harmonic drive robot arm can also be used Implement high-speed speed motion such as hand generators, wind turbines, and convenient implementation of differential transmission.

For more information, please feel free to contact us!

Machinery Gears(2021年12月15日)

laifualgroup — 2021-11-30T12:43:12+0900

https://www.laifualgroup.com/gearbox-in-machine-tools.html

Harmonic Gearbox & Planetary Gearbox in Machine Tools
Laifual also has rich experience in precision motion control solutions.

The Wide Application of Laifual Machine Gears
Having different types of machine gears for sale, Laifual produces high precision harmonic reducer that has the characteristics of low-temperature rise, low starting torque, high reliability, big torque, long lifetime, big speed ratio, small size, etc., which can be widely used for precise applications in the machine tool industry.

Gearboxes, such as milling machine gearbox, plastic extruder gearbox, drill machine gearbox, mini lathe gearbox, are all available at here. Contact us now!

Defense & Aerospace Gearboxes(2021年12月08日)

laifualgroup — 2021-11-30T12:42:44+0900

https://www.laifualgroup.com/gearbox-in-aerospace-defense.html

Harmonic Gearbox & Planetary Gearbox in Aerospace & Defense
Harmonic gearbox's reliability and quality make it possible in the defence industry. Using special materials, our defence and aerospace gears have extremely light constructions. We also employ dry lubrication so as to meet the requirements of aerospace and defence purposes.

Why the Defense and Aerospace Gearboxes Need Specially Designed Defense and Aerospace gears?
Aviation engine and gearboxes are extremely high applications that require extremely high reliability and tightness tolerances. Whether it is the component for a passenger, a spacecraft or a space probe - all the gearboxes of flying objects have to overcome the tremendous pressure the outside has placed on them. They need to have excellent performance even in air. In addition, they also need to have high positional accuracy and repetition accuracy. Thus, using reliable and light high-performance defence and aerospace gears is then become a must.

The Broad Application Spectrum of Laifual Aero Gears
The application of Laifual gearboxes in the industry of aerospace and defence industry is greatly varied. For instance, with the characteristics of lightweight, durable and dry-lubricated, our harmonic drive actuators can be widely used in satellites, so as to pioneer the orientation of the solar panels. With years of experience in aerospace, we can also provide you with innovative solutions for different kinds of national and civil aeroplanes.

As one of the professional aerospace gear manufacturers in China, Laifual can offer you high-quality electric motor planetary gearboxes that suit your own needs.

Characteristics of the Planetary Gear Drive(2021年12月01日)

laifualgroup — 2021-11-30T12:42:04+0900

https://www.laifualgroup.com/characteristics-of-the-planetary-gear-drive.html

Ⅰ. Harmonic drive VS Planetary gear drive

When their parts materials and mechanical properties, manufacturing accuracy, working conditions, etc. are the same, the planetary gear drive has a series of outstanding advantages, so it is often used as the planetary reducer/planetary gear reducer, speed increasing gear, differential speed and reversing mechanisms and for other special purposes.

Ⅱ. The main features of the planetary gear drive

(1) The planetary reducer is small in size, light in weight, compact in structure, large in transmission power, and high in load capacity; These features are determined by internal factors such as the structure of the planetary gear drive.

A. The planetary reducer adopts the principle of power splitting. Several identical planetary gears are evenly distributed around the center wheel to share the load, so that the load on each gear is smaller, and the corresponding gear modulus can be smaller. In the case of uniform load, with the increase of the planetary gear, its external size decreases.

B. The planetary reducer makes full use of the high bearing capacity of the internal gearing and the space volume of the internal gear (or ring gear), thereby reducing the radial and axial dimensions, and making the structure very compact and the bearing capacity high.

C. The planetary reducer is a coaxial drive device. Each center wheel forms a coaxial drive, and the input shaft and the output shaft are coaxial, so that the size of the drive device in the length direction is greatly reduced.

(2) The planetary reducer has a large drive ratio; As long as the type of planetary drive and the gear allocation plan are appropriately selected, a few gears can be used to obtain a large drive ratio. In a planetary mechanism that is not used as a power drive but mainly used to transmit motion, its drive ratio can reach several thousand. In addition, because the planetary gear drive can rotate its three basic components, it can realize the synthesis and decomposition of motion, as well as complex motion such as step or stepless variable speed drive.

A planetary reducer/planetary gear reducer can obtain a large drive ratio, but it must be noted that its drive efficiency will become lower.

(3) The planetary reducer has a high drive efficiency; Because the planetary gear drive adopts a symmetrical split drive structure, even if it has several evenly distributed planetary gears, the reaction forces acting on the center wheel and the rotating arm bearings are balanced with each other, which is conducive to improving drive efficiency. When the drive type is selected properly and the structure layout is reasonable, its efficiency can reach 0.97 to 0.99.

(4)The planetary reducer has stable motion, strong resistance to shock and vibration; Due to the use of several identical planetary wheels, which are evenly distributed around the center wheel, the inertial forces of the planetary wheels and the rotating arm can be balanced with each other. Besides the number of teeth involved in the meshing can be increased, so the planetary reducer/planetary gear reducer boasts smooth drive motion, strong resistance to shock and vibration, and more reliable work.

How to Avoid Wear Leakage and Other Faults of the Harmonic Gearbox(2021年09月29日)

laifualgroup — 2021-09-28T18:44:44+0900

https://www.laifualgroup.com/products/harmonic-gearbox/

Harmonic gearboxes are not very unfamiliar to most people. Harmonic gearboxes play a role in matching the speed and transmitting torque between the prime mover and the working machine or actuator. It is a relatively precise machine. However, due to the harsh working environment of the harmonic gearbox, failures such as wear and leakage may occur. So how should we avoid these failures? The following four tips for harmonic gearbox maintenance are recommended.

1. During work, when the temperature of the harmonic gearbox oil temperature rises above 80°C or the oil pool temperature exceeds 100°C and abnormal noise is found, stop using it. Check the cause and remove the fault and replace the lubricant.

2. When changing the oil, wait for the harmonic gearbox to cool down and there is no risk of combustion, but it should still be kept warm because the viscosity of the oil increases after it is completely cooled and it is difficult to drain the oil. Note: Cut off the power supply of the drive to prevent accidental power on.

3. After the harmonic gearbox has been in operation for 200 to 300 hours, the oil should be changed for the first time, and the oil quality should be checked regularly in the future use, and the oil mixed with impurities or deteriorated should be replaced in time. Under normal circumstances, the harmonic gearboxes that work continuously for a long time should be replaced with new oil after 5000 hours of operation or once a year, and the harmonic gearboxes that have been out of service for a long time should also be replaced with new oil before re-operation. Harmonic gearbox should be filled with the same oil as the original brand, and should not be mixed with oils of different brands. Oils with the same brand but different viscosity are allowed to be mixed.

4. Users should obey the rules and regulations for reasonable use and maintenance. The operation of the harmonic gearbox and the problems found during the inspection should be carefully recorded. The above regulations should be strictly implemented.

Zhejiang laifual drive Co., Ltd. is a national custom gear manufacturer, we provide harmonic gearbox, harmonic gearbox and etc. Want to know more? Please contact us.

Magic Structure and Function of Harmonic Gearbox(2021年09月28日)

laifualgroup — 2021-09-28T18:44:19+0900

https://www.laifualgroup.com/products/harmonic-gearbox/

Speaking of harmonic gearboxes, some people may not know much about them. It doesn't matter. Although this new type of mechanism is not widely used in the market at present, it is believed that it will be widely used in all walks of life in the near future. Harmonic gearbox completes transmission function by virtue of elastic deformation movement. Different from the traditional mechanical transmission, this kind of transmission uses the rigid member mechanism. A flexible component inside makes it possible to successfully complete the mechanical transmission and solves many problems that are not encountered in the design.

1. The Origin of Harmonic Gearbox

In fact, harmonic gearbox appeared in the middle of last century. At that time, it was used in aerospace field. The aviation field needs some mechanical transmissions with large transmission ratio, small size, light weight, high transmission precision and small return difference. Therefore, someone invented the harmonic gearbox. It consists of three basic components: rigid wheel, flexible wheel and wave generator. In the flexible gear, the moving deformation wave appears with the help of the wave generator, which meshes with the rigid gear teeth and finally realizes the transmission.

2. Advantages of Harmonic Gearbox

The advantages of harmonic gearbox are remarkable. It has a wide range of transmission ratio, a large number of meshing teeth, and small and uniform tooth surface wear, so the whole harmonic gear has high transmission precision, high motion precision, high transmission efficiency and great bearing capacity. It has the unique performance of large speed ratio and small volume. At the same time, the transmission is stable with no impact and small noise. If necessary, you can freely adjust the gap between the teeth sides. It can also transmit motion or power to a closed space.

However, the components of harmonic gearbox, flexible wheel and wave generator, are difficult to manufacture, so they are very expensive. Moreover, the required transmission ratio should not be low and the number of teeth should not be small, otherwise fatigue damage will easily occur. At the same time, there is no intermediate speed because it does not have the structure of intermediate shaft. You should pay attention when using it.

Therefore, we should choose harmonic gearboxes with high speed, reasonable structural parameters, low heat generation and large transmission bearing capacity, thus prolonging the service life of the machine and ensuring the safety of operators.

Zhejiang Laifual Drive Co., Ltd. is a national custom gear manufacturer, we provide planetary gear, harmonic gearbox and etc. Want to know more? Please contact us.

How to Solve the Noise Problem of Harmonic Gearbox(2021年09月28日)

laifualgroup — 2021-09-28T18:43:54+0900

https://www.laifualgroup.com/products/harmonic-gearbox/

First of all, we all know that there will be noise in the gearbox and relevant qualified decibels. Noise is mainly caused by friction, vibration and collision of transmission gears. How do we effectively reduce noise? What problems should we pay attention to in the process of using? This paper introduces the contents of noise maintenance of harmonic gearbox.

1. Timely lubrication and proper use of oil products for the harmonic gearbox
Unreasonable lubrication and wrong use of grease will cause immeasurable damage to harmonic gearbox. When the speed is high, the friction of gear tooth surface will produce a lot of heat energy. If the lubrication is improper, it will lead to the damage of gear teeth, affect the accuracy and increase the noise. Appropriate clearance (clearance between non-working surfaces of meshing gear teeth to compensate for thermal deformation and store grease) is required in the design. Proper use and selection of lubricating grease can ensure the safe and effective operation of the system, delay the deterioration trend and stabilize the noise level.

2. Correct usage of the harmonic gearbox
Proper use of harmonic gearbox can avoid the damage of components and ensure stable noise level. Harmonic gearbox noise will increase with the increase of load, so it should be used in normal load range.

3. Regular maintenance of the harmonic gearbox
You should change oil, replace worn parts, loose fasteners and remove internal sundries regularly. The harmonic gearbox cleaning and maintenance machine can realize the functions of cleaning harmonic gearbox, quickly filtering waste oil and filling new oil by using the original oil supply and discharge system of harmonic gearbox and the filtered old oil. Hardware facilities are not changed and cleaning agents are not added in the operation process, thus ensuring the safe operation of the harmonic gearbox and prolonging the service life. You should also adjust the clearance of each component to the standard value and verify the geometric accuracy.

Zhejiang Laifual Drive Co., Ltd. is a national custom gear manufacturer, we provide planetary reducer gearbox, harmonic gearbox and etc. Want to know more? Please contact us.

What Is Harmonic Gear Transmission?(2021年09月28日)

laifualgroup — 2021-09-28T18:43:26+0900

https://www.laifualgroup.com/products/harmonic-gearbox/

Many people may have heard of harmonic gearbox, but they haven't seen it, or even know nothing about it. What is harmonic gearbox? What is its harmonic gear transmission? What are its advantages and characteristics?

1. What is harmonic gear transmission?

From the interpretation of definition, simply speaking, it is a new type of mechanism that relies on elastic deformation to realize transmission. It uses a flexible construction to realize mechanical transmission and obtain a series of special functions which are difficult to achieve by other transmissions.

2. Advantages of harmonic gear transmission

First, the appearance is an aspect that people pay more attention to now. Although the harmonic gearbox is a high-tech product, its structure is not as complicated as everyone imagined, but rather very simple. Compared with some other common products, its parts are much fewer and less trivial. Because of its simple structure, it is light in weight, which is convenient to carry and easy to move.

Secondly, the harmonic gearbox moves smoothly when working, which is a great advantage. After all, if the equipment can't work smoothly, there will be great errors. Generally, sudden changes will not occur. Its noise is relatively small. It will not produce any impact, so the service life of the equipment will be relatively long.

Third, the transmission speed and the transmission efficiency are relatively high. Harmonic gearboxes are widely used. The function is not only to slow down, but also to increase speed sometimes. The effect is very good, greatly reducing the trouble.

Fourth, it has strong carrying capacity. Although it is relatively small in size, few in parts and simple in structure, its bearing capacity is really super strong, completely surpassing other transmission equipment.

These are all about the harmonic gearbox and harmonic transmission. Above, we introduced what harmonic gear transmission is and its advantages and characteristics. In fact, with the continuous development and change of social science and technology, the transmission has been continuously improved and perfected. There will always be better equipment to help the industry develop better.

Zhejiang Laifual Drive Co., Ltd. is a national gear reducer manufacturers, we provide servo planetary gearbox, harmonic gearbox and etc. Want to know more? Please contact us.

How to Choose Planetary Gearbox(2021年09月28日)

laifualgroup — 2021-09-28T18:42:59+0900

https://www.laifualgroup.com/products/planetary-gearbox/

Many users may not be so unfamiliar with planetary gearboxes, because at present, many enterprises need to use them when processing and producing. Before usage, we should make clear the specific principle and structure of planetary gearboxes. With the increasing market demand, there are many kinds of planetary gearboxes on the market at present. For some inexperienced people, they don't know how to choose.

Therefore, it is necessary to clarify the selection skills of planetary gearboxes in order to ensure the selection of a suitable planetary gearbox. Only by mastering specific skills can we ensure the overall effect.

1. How to Choose the Planetary Gearbox

When choosing a planetary gearbox, you should consider the operating parameters, including the peripheral speed of planetary gearbox tooth transmission, the speed of input shaft, the corresponding working environment and forward and reverse operation.

In addition, the specific reduction ratio should be determined. You should be clear about the specific calculation formula, because only when the calculation formula is correct, can you ensure the correctness of the calculation result when you carry out the calculation. Of course, you should also fully consider whether the motor is overloaded. If the motor is overloaded, you should choose the planetary gearbox with larger load capacity. After that, you should consider the return clearance. Usually, the smaller the clearance, the higher the accuracy and the higher the cost. For the majority of users, when selecting planetary gearboxes, the accuracy requirements should be met and the average service life should also be considered. In the whole installation process, you should improve reliability and reduce errors.

2. Characteristics of Planetary Gearbox

Compared with other precision reducers, planetary gearbox has the characteristics of high rigidity, high precision and high transmission efficiency. When equipment failure occurs, the maintenance is more convenient. When it is installed on a stepping motor, it can not only reduce the rotating speed, but also increase the torque and configure inertia. At the same time, you should analyze the specific structure. In case of equipment failure, you should specify the specific solutions. Usually, the corresponding solutions will be different for different faults. Therefore, when choosing a planetary gearbox, you should consider comprehensively.
Zhejiang Laifual Drive Co., Ltd. is a national reduction gearbox suppliers, we provide strain wave gearbox, harmonic gearbox and etc. Want to know more? Please contact us.

Installation and Maintenance of Planetary Gearbox(2021年09月28日)

laifualgroup — 2021-09-28T18:42:24+0900

https://www.laifualgroup.com/products/lfb-concentric-shaft-planetary-gearbox/

In the gearbox family, planetary gearboxes are widely used in the drive systems of servo, stepping and DC brushless motors (drive motors) because of their small size, high transmission efficiency (85~90%), wide speed reduction range (1:3~100) and high precision (small backlash). On the premise of ensuring precise transmission, it can reduce the rotating speed, increase the torque and reduce the ratio of inertia between load and driving motor. However, there are often failures due to improper installation in actual use. The broken shaft of planetary gearbox and driving motor is one of the main fault types. The analysis of broken shaft mechanism is helpful for customers to know how to install planetary gearbox correctly and give full play to the role of planetary gearbox.

1. Correct Installation of Planetary Gearbox

Correct installation, use and maintenance of planetary gearbox are important to ensure the normal operation of mechanical equipment. Therefore, when installing the planetary gearbox, it must be carefully assembled in strict accordance with the following installation sequence.

Step 1: Before installation, confirm whether the motor and gearbox are in good condition, and strictly check whether the sizes of all parts connected with the drive motor and gearbox match. It refers to the positioning of driving motor flange, the positioning of lug boss and shaft diameter and gearbox flange, the size and fit tolerance between groove and aperture. Wipe the dirt and burrs on the surface.

Step 2: Unscrew the screw plug on the process hole on the side of the gearbox flange, turn the input end of the gearbox to align the socket head cap with the process hole, and insert the socket head cap tool to tighten the socket head cap.

Step 3: Hold the drive motor by hand, make the keyway on its planetary gear shaft perpendicular to the holding screw at the input end hole of the reducer, and insert the drive motor shaft into the input end hole of the gearbox. When inserting, the concentricity must be consistent and the flanges on both sides should be parallel. If the concentricity is inconsistent or the flanges on both sides are not parallel, you should find out the reason. In addition, during installation, it is strictly prohibited to use hammering, which can prevent the axial force or radial force of hammering from damaging both bearings, and can judge whether the two fit properly through the assembly hand feeling. The method to judge the matching concentricity and flange parallelism is that the flanges of the two are basically close to each other and the gaps are consistent after the two are inserted into each other.

Step 4: In order to ensure the uniform receiving force of the flange connection, you should first screw the fastening screw of the driving motor arbitrarily, but do not tighten it. Then gradually tighten the four fastening screws at diagonal positions. Finally, tighten the screw at the input end hole of the gearbox. Be sure to tighten the fastening screw of the driving motor before tightening the screw at the input hole of the gearbox.

Note: The correct installation between gearbox and mechanical equipment is similar to the correct installation between gearbox and driving motor. The key is to ensure the consistency of concentricity between the output shaft of gearbox and the input shaft of the driven part.

2. The Main Failures of Planetary Gearbox in the Long-Term Operation

(1) The bearing chamber of the planetary gear box is worn, including the wear of the housing bearing box, the bearing chamber of the inner hole of the box body and the bearing chamber of the gearbox.

(2) The diameter of the gear shaft of the planetary gear box is worn. The main wear parts are the shaft head, keyway, etc.

(3) The shaft bearing of the transmission shaft in the planetary gearbox is worn.

(4)The joint surface of planetary gearbox is leaking.

Zhejiang Laifual Drive Co., Ltd. is a national custom gearbox manufacturers, we provide harmonic drive gearbox, harmonic gearbox and etc. Want to know more? Please contact us.

Detailed Information about Harmonic Gearbox(2021年09月28日)

laifualgroup — 2021-09-28T18:41:48+0900

https://www.laifualgroup.com/products/harmonic-gearbox/

The ultimate function of gearbox and frequency converter on transmission equipment is to reduce the speed. However, gearbox is actually a power transmission mechanism, which does not generate power itself. Its function is to reduce the rotation number of motor to the desired rotation number by using different gear sizes and speed converters, obtaining a mechanism with larger torque.

1. The Application of Harmonic Gearbox

Among the mechanisms used to transmit power and motion, harmonic gearbox is widely used. It can be found in almost all kinds of mechanical transmission systems, such as ships, automobiles, locomotives, heavy-duty machines and tools for construction. The principle of bicycle is similar to that of gearbox. From the processing tools and automatic production equipment used in the machinery industry to the common household appliances, clocks and watches in daily life, its application can be found from the transmission of large power to the transmission of small load and accurate angle. In industrial applications, the gearbox has the functions of reducing speed and increasing torque. Therefore, it is widely used in speed and torque conversion equipment. For example, the elevator we take every day uses the worm gear reducer.

2. The Role of Harmonic Gearbox

(1) It can reduce speed while increasing output torque. Torque output ratio is motor output multiplied by reduction ratio. It should be noted that torque output should not exceed the rated torque of reducer.

(2) It can reduce the inertia of the load while decelerating. The reduction of inertia is the square of the reduction ratio.

3. The Classification of Harmonic Gearbox

Harmonic gearbox is a relatively precise machine. The purpose of using it is to reduce the speed and increase the torque. There are many kinds and different models with different uses. According to the transmission type, they can be divided into gear reducers, worm reducers and planetary gear reducers. According to the different transmission stages, they can be divided into single-stage and multi-stage reducers. According to the gear shapes, they can be divided into cylindrical gear reducers, conical gear reducers and conical-cylindrical gear reducers. According to the arrangement of transmission, they can be divided into expansion type, shunt type and coaxial type reducers.

4. The Working Principle of Harmonic Gearbox

Harmonic gearbox is generally used for transmission equipment with low speed and high torque. It achieves the purpose of speed reduction by inputting the power of motor, internal combustion engine or other high-speed operation into the gear with fewer teeth on the input shaft of speed reducer, and then engaging the gear with fewer teeth with the big gear on the output shaft. Ordinary speed reducers also have several pairs of gears with the same principle to achieve the ideal speed reduction effect. The ratio of the teeth number of large and small gears is the transmission ratio.

Zhejiang Laifual Drive Co., Ltd. is a national reduction gears suppliers, we provide harmonic reduction gear, harmonic gearbox and etc. Want to know more? Please contact us.

The Fundamental Difference between RV Gearbox and Harmonic Gearbox(2021年09月28日)

laifualgroup — 2021-09-28T18:40:53+0900

https://www.laifualgroup.com/products/

According to the mechanical structure, industrial robots can be divided into SCARA robots, Cartesian coordinate robots, articulated robots, parallel robots and others. The global industrial robot market is dominated by articulated robots. The robot consists of a controller, a servo motor and a gearbox. The cost of the gearbox, servo and controller account for 30% ~ 50%, 20% ~ 30%, and 10% ~ 20% of the robot cost respectively. The robot gearboxes mainly include RV gearboxes and harmonic gearboxes. What is the difference between them? How do we distinguish them during use?

1. RV Gearbox for Robots
The RV gearbox is suitable for heavy-duty robots. It is generally applied to the three joints of the leg, waist and elbow of a heavy-duty robot. Compared with harmonic gearbox, the key of RV gearbox lies in processing technology and assembly technology. RV gearbox is with higher fatigue strength, stiffness and service life. It is unlike harmonic gearbox whose motion accuracy will decrease significantly with the increase of service time. Its disadvantages are heavy weight and large size.

2. Harmonic Drives in Robotics
Robot harmonic drive is used for several shafts at the ends of small robots or large robots. Compared with RV gearbox, harmonic gearbox is characterized by small size, light weight, large bearing capacity, high motion precision and large single-stage transmission ratio.

At present, the harmonic gearbox industry in China is developing rapidly. Zhejiang Laifual Drive Co., Ltd. is a professional manufacturer and supplier of gearbox products. We can provide different types of gear boxes with reliable quality.

It can be known from the above that RV gearbox is mainly used in several front joints of heavy-duty robots. Harmonic gearbox is mainly used for the end shafts of light and small industrial robots.

Zhejiang Laifual Drive Co., Ltd. is a national gearbox producers, we provide harmonic drive gear, harmonic gearbox and etc. Want to know more? Please contact us.