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Needless to mention the importance of servo motors, they mainly include the input and output devices of the entire robot.

Your surgical robotic arm must be stable and must reach the speed you want to achieve the best results.

And it depends on the ability of the servo motor assembled on your robot.

Generally speaking, servo motors are better done abroad, and the best ones are of course Japanese, especially Japanese Denso.

The robots they produce are specially supplied to companies like Toyota and Honda.

And many of them are specially supplied to Mitsubishi's military industry departments.

Mitsubishi servo motors and Dawei Heavy Industry's servo motors are actually of no difference in quality, because both of these machine tools are very strong.

Many of Japan's military equipment are produced by these two factories, such as their warships, submarines, and minds...

However, the requirements for servo motors used on surgical robots are still very different from those used on ordinary industrial machine tools.

The servo motors used on industrial machine tools have different requirements and surgical robots, so the settings are naturally different.

Because industrial machine tools often require high-speed cutting, they require very high power to servo motors and also very powerful to reduce the speed.

But the servo motor required by the surgical robot is completely different. The speed of the surgical robot driving the robot's arm does not require too fast.

The only requirement is stability and precision, so this requires efforts to control software and vibration filtering and defibrillation systems.

Therefore, the requirements for servo motors are not particularly strong, as long as the power output is stable, the life span is long, and there is no clutter.

To be honest, even with such low requirements, servo motors produced by domestic manufacturers are not reassuring.

Because in terms of output smoothness, we are still far from foreign products.

In fact, we don’t understand the design concept, but when it comes to the gap, it’s still a big difference between the most basic materials.

The stators used inside the servo motor are all made of special rare earth materials, which ensures the stability, life, and accuracy of their motor output.

Therefore, the power output of other people's servo motors will be stable and will not be stuck or the power output will be suddenly interrupted.

And our domestic servo motors... are really hard to describe. Anyone who has been to a front-line factory or field inspection will know what the situation is.

I can't complain too much here, because too much talk can easily lead to the risk of 404.

Therefore, for surgical robots, what they need is not the top-level servo motor. As long as it is an ordinary-level servo motor, it is enough to ensure that the power output is free of jamming and stable.

For example, the most awesome Da Vinci surgical robot produced in the United States on the market, there are more than 30 servo motors installed all over the body.

And their motors use Swiss Maxson motors.

It is not a high-end product, but it is also a trustworthy brand, so it makes Huang Haibin convenient.

If he gets a motor from Maxson, it is much simpler than a motor from Japan Denso or a Bosch German.

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After all, those two companies have always been very wary of us...

After all, the international attitude towards us is quite special now, especially in Western countries. In many sensitive areas, there will be many restrictions on our technology output.

Equipment like servo motors are more sensitive equipment.

Because if this kind of equipment is used on machine tools, it will definitely make many people think a lot.

However, if you import such a relatively ordinary servo motor, it is obvious that it is of civilian level, and those who hold magnifying glasses will not be able to say anything.

Next, let’s talk about the robot’s robot’s robot’s robot’s robot’s robot’s robot’s robot’s robot’s robot’s robot’s robot’s robot’s robot’s robot’s robotic arm.

In the past, traditional industrial robots used ball screw bearings when controlling robotic arms.

The four-cylinder bearing controls the forward, backward and forward and backward accuracy of the robot arm, and also has ball screw bearings to control it.

So it can be said that rolling lead screw bearings are the soul of an industrial machine tool.

It is also the precision of industrial machine tools.

Ball screw bearings have always been a pain point and weakness in our country.

Take industrial robots as an example. When machining parts, the accuracy of the parts must be controlled within a few wires at zero points, and all the ball screw bearings are used.

Because it is precisely because he controls the advance depth, angle, and strength of the robot arm that determines the machining accuracy of the workpiece.

This greatly improves the requirements for the rolling screw bearings that control the robotic arm.

Although we can make bearings of giant electric windmills, we really can't do this kind of small bearing.

Speaking of this bearing, the gap between us and foreign countries is completely different.

The first is processing accuracy.

You can see many videos of German bearings on the Internet. People's bearings can be used as long as they are assembled without adding lubricating oil.

And as long as you give him some strength, he can even keep turning for about a minute.

What does this mean? This shows that people have high processing accuracy and the energy loss of the bearings during rotation is very small. On the other hand, they have high polishing level.

The surface of the workpiece is extremely smooth, so even if there is no lubricating oil, the rotation resistance of the workpiece is particularly small.

Then you can try changing to domestic bearings.

Even if the specifications and sizes are all bearings of the same shape. With the same force, the bearings can rotate for one minute, but it would be great if our bearings can last for half a minute.

The first thing that reflects is the difference in processing accuracy. Even if we only have a few wires that are visible to the naked eye than others, the actual working effect of the workpiece will be much worse.

The second is the material.

The balls used by others are all balls made of special alloy steel. They can work in high temperature and high pressure environments for a long time and will not deform.

You are looking at our balls, which are also known as special alloy steel, but they are placed in the same working conditions.

German balls can be used for ten years and will not break as long as they are regularly maintained and do not need to be replaced.

But our domestic balls are basically scrapped in half a year, either deforming or cracking, and even more ruthlessly, they will simply break directly.

It is not an exaggeration to say this. Anyone who has visited various factories on the front line knows that this is definitely not exaggeration.

And if we are in high-end bearings, we can be said to have been blocked abroad.

It is quite expensive to introduce high-end bearings from Germany or Japan.

The most hateful thing is that even if you are rich, they may not necessarily sell it to you.

Fortunately, in terms of surgical robots, the designers from the United States cleverly avoided this problem.

In fact, this is mainly related to the characteristics of surgical robots.

Speaking of surgical robots, it may be hard for us to imagine that this thing is actually a device derived from industrial robots.

The so-called industrial robots are actually machine tools.

Before the 1950s, the machine tools in the factory were all first-generation products, namely products with single performance, such as lathes, milling machines, grinding machines, etc.

Later, in the late 1950s, the Americans assembled these machine tools with different performances together, and the first generation of industrial machine tools that combine five functions: car, pin, boring, milling, and grinding.

Later, it was because of the *********, so in the 1980s and 1990s, the Germans and Japanese carried forward this modern industrial machine tool and achieved the ultimate goal.

At that time, this five-axis linkage machine tool had a beautiful name called the modern machining center.

In fact, this is the first generation of industrial robots, but the appearance is not very similar to the type of robot with a head and a robot in our cognition.

But he has all the functions that a robot should have.

For example, the fixtures and processing tools in the processing unit are actually the robotic arms we recognize.

And their CNC panel is their brain.

After this first generation of machine tools, large European and American companies have developed assembly-line robots.

This assembly line robot is mainly used in the automobile industry, mainly to welding the white body of the car.

And this generation of robots is more similar to the robots we recognize.

Although they also have no head, they have a try-in robot arm. They can fix the body while flipping the body back and forth according to the angle set by the program.

Another robot arm, with a hand-held welding gun, can continuously drill into the inside of the car body at various angles and complete welding on the car.

The control of these two generations of industrial robots is inseparable from ball screw bearings.

It can even be said that their machining accuracy during work is controlled by servo motors and four-cylinder bearings.

Speaking of this surgical robot, although it is also derived from an industrial robot, the original designer was in trouble whether to use rolling rental four-cylinder bearings.

Because the working conditions of surgical robots are very different from those of industrial robots.

If you install ball screw bearings on such a robot, the cost is too high, and the volume of the equipment will be greatly increased.

This goes against the designer's original intention, and ball screw bearings have very high requirements for the working environment.

This is inconsistent with the design concept of surgical robots...
Chapter completed!