1463 Once the Legend Has Become a Reality

The latest website: In fact, the term flexible processing has existed in the machining industry for a long time.

But it only exists as a legend, because no company has ever been able to truly realize it.

As for the reason, it is very simple, because it is too difficult.

In fact, a long time ago, machining companies discovered that when using machine tools to process workpieces.

Benches, fixtures, and even the ground where the machine tool is placed will transmit another reaction force to the machine tool when the machine tool is working.

This will affect the accuracy of machine tool processing.

So people thought of many ways to solve this problem at that time.

For example, the special metal used to make the machine tool stand and fixture, the machine tool factory will put them in the natural environment outside, and use natural methods to eliminate the internal stress of these metal materials.

This process is like the age of great navigation. It is a reason why the British put the tall trees that made the keel of the big ship in the natural environment to dry in the shade.

Because it has only experienced the wind, sun, rain and rain in nature, and the tempering of various extreme natural environments in countless cold days.

Only in this way can the stress between the cells inside the trunk be eliminated, so that the trunk can reach the best and most suitable state for making keels.

The same is true for the metals used to make benches and fixtures, which are used by machine tool processing companies.

However, this process was so long that machine tool companies had to use various modern methods to deal with these special metals.

For example, they will use electromagnetic degaussing, or when forging these metals, they will use special heat treatment methods to maximize the elimination of stress inside the metal.

This process is like the age of great voyages, in order for the Dutch to manufacture merchant ships at a faster speed.

They adopted a method different from that of the British, and they made many large drying furnaces.

The wood used as the keel is put into the drying furnace to be baked, which greatly speeds up the rapid drying of the keel and eliminates the internal stress.

It's just that the keel and merchant ships manufactured by this method,

Generally not so strong and durable as the merchant ships built by the British.

While modern machine tool factories are trying to use various methods to eliminate the internal stress of metals and shorten the production time of these benches and fixture metal materials.

Someone came up with an idea, that is, why not let the fixture and the workpiece move back and forth during machining, so as to achieve the purpose of slowing down the impact force of the machining tool head on the workpiece when implementing hard links?

Because most of the machine tools are fixed when they are working, so that they can resist the impact of the fast-rotating cutter head on the workpiece.

Even if the internal stress of your gantry and tool is eliminated cleanly, the ground will exert a reaction force on your machine tool.

So no matter how you adjust it, there is no way to eliminate this reaction force except for increasing the processing cost.

So what if the workpiece and fixture can be moved during processing, so as to achieve the purpose of buffering the impact force of the cutter head?

The benefits of this flexible processing are many.

First of all, the requirements for the metal used in fixtures and stands are greatly reduced, and even the requirements for special metal specifications used in the mechanical arm holding the tool will be greatly reduced.

Because in the original machining, the hard link mode is adopted, that is, one side clamps the workpiece and fixes it, and the other side uses the tool to continuously move and mill on the workpiece.

This hard link mode has very high requirements on the machine tool gantry, fixtures and tool-holding robotic arms.

Not only must it be extraordinarily hard, but also have extraordinary toughness to ensure that the reaction force can be resolved during long-term processing without causing deformation.

In addition, because of the hard link mode used, the requirements for servo motors and ball screw bearings are also very high.

The servo motor needs to amplify the torque and increase the speed of the cutter head, so that it can turn and mill on the hard metal billet.

In this way, the servo motor not only consumes a lot of power, but also has very high requirements for the internal electromagnetic components, and must have very good durability.

In addition, the same is true for the ball screw bearing. It is necessary to ensure that the cutter head can be fed accurately, so the precision requirements for the cutter head to advance and retreat are very precise.

When the cutter head rotates at high speed to process on the workpiece, the roller screw bearing will also bear a very large reaction force, so the requirements for the smoothness of the inside of the bearing and the balls are very high.

Therefore, in this hard link processing mode, the requirements for various parts are very high, and many key parts need to use parts made of special alloys.

These parts are not only expensive in raw material cost, but also very cumbersome in processing technology, so the cost is high.

It can be said that at least 50% of the cost of a machine tool is consumed on these hardware devices.

However, with the flexible processing scheme, there are no such scruples at all.

Because flexible machining has its own concept of buffer force, the metal specification requirements for jigs, gantry, and even the mechanical arm holding the cutter head are not as high as hard machining machine tools.

Because they don't have to withstand high action and reaction forces, not even the motor and ball screw bearings.

In the past, for hard machining machine tools, the motor may have to make the cutter head rotate at a speed of more than 100,000 revolutions per minute to complete the machining on some special metal workpieces.

In terms of flexible processing, because the fixture and the mechanical arm holding the cutter head share the general action force and reaction force, so that the cutter head speed does not need to be too high to complete processing on hard workpieces.

In this way, the requirements on the servo motor will not be so high.

For controlling the depth and precision of the cutter head, the ball screw bearing will also have little reaction force, so the requirements for the specifications of the metal material do not need to be too high.

Moreover, the use of flexible processing also greatly reduces the environmental requirements for extra bed processing.

For example, in the past, hard machining machine tools had very high requirements on the processing environment, especially the floor of the workshop.

Not only should sand be filled under the workshop to achieve the purpose of buffering the force during processing, but also a large number of buffer layers should be laid when laying the ground.

And this buffer layer, because of the large amount of rubber used, is very expensive.

And if flexible processing can be realized, then the requirements for the ground of the new machine tool will not be so high, and production can even be carried out on ordinary cement ground.

In this way, if real line-of-sight flexible processing is possible, the cost of machine tool manufacturers and companies using machine tools will be greatly reduced.

At that time, some machine tool factories also tried this flexible processing proposal.

But soon several major machine tool factories gave up, because it was too difficult to do so.

Even the cost will be higher than the cost they spend to eliminate the metal stress, to fill the ground of the machine tool workshop, and the cost of the buffer layer.

Because the first thing you have to solve is to mount the hydraulic shock absorber on the clamp base.

The second is to adjust the control system of the processing software.

It is necessary to strictly control the retraction of the fixture and the workpiece during processing, and at the same time, it is necessary to strictly control the feed of the tool.

To put it bluntly, when the fixture clamps the workpiece and buffers backwards, your cutter head must keep up, and ensure that it is in close contact with the processed workpiece, and cannot leave too far away.

Because once the contact is disconnected, when you want to reconnect it later, there will inevitably be errors, and the difficulty of reconnecting will be great.

Moreover, the most perfect solution is to process a finished workpiece in one go, and the most taboo is to stop and go.

Because it is very troublesome and cumbersome to reset the operating system on one side every time it is shut down and then re-docked.

There are even many processing companies who would rather scrap the workpiece than reconnect and restart processing after the processing stops.

Therefore, this flexible processing has very high requirements for the cooperation between the fixture and the tool during processing.

And this is mainly a test of the machine tool control software system, in terms of the computer software programming technology at that time.

It is simply impossible to complete such an industrial control system.

So even those who are very engaged in processing know the benefits of flexible processing.

But when it comes to people who really realize this kind of processing technology, there are not many people.

Because the cost is too high, this is a new way that is completely different from the previous traditional machine tool processing concept.

With the current level of technology, it seems unrealistic to many people to achieve such a breakthrough.

And now, in the factory of Xinghuo Technology, Huang Haibin stared dumbfounded at the 'machine tool' in front of him, he was completely shocked!

This Nima, isn't it the legendary flexible processing! ?

This is completely different from the mainstream technology currently used in the field of CNC machine tools dominated by the United States, Japan and Germany!

That is to say, we have completely blazed a new path and embarked on a machining path that is completely different from theirs!

Thinking of this, Huang Haibin couldn't help but burst into tears!

At this moment, he really wanted to say, our high technology has stood up!

As a decades-long veteran of the scientific research industry, he is well aware of the shortcomings in my country's technical field.

It can be said that our country has called for technological transformation and upgrading for ten years, but there are two main reasons why it has not been upgraded.

It is in two fields that we have been stuck by foreign countries.

One is the material, and the other is precision processing!

Although 3D printing technology has been very popular in recent years, it is impossible for this kind of additive manufacturing to completely replace the subtractive manufacturing represented by machine tools within a hundred years.

And he never thought before that we could catch up in the field of subtractive manufacturing...

Because in this field, we are too far behind.

Even those who really know the inside story of the industry will feel hopeless.

The technical barriers built by the United States, Japan and Germany in this field are simply too high.