Three more sent for support! There will be a shift in the evening, let's give more effort!

The bed of the machine tool refers to the frame and base of the machine tool, such as the bed, column, workbench, beam, bedside box, slide plate, shell, and other components.

They are mainly forged and welded, assembled together, to play a supporting role for the machine tool.

Danshi inevitably faces an internal stress problem when these assemblies and components are cast, welded, and later machined.

Internal stress means that when the object is deformed due to an external force, the corresponding internal stress will be generated from the inside to resist this external force and want to maintain the original shape of the object.

For example, if a steel plate is placed in a flat piece, it will remain unchanged, and if a danshi is cut and thinned, it will warp and keep the original shape.

And this kind of internal stress often becomes a great inducement to affect the machining accuracy of machine tools.

Most of today's machine tools pay attention to numerical control, high-precision machine tools, and the precision is getting higher and higher, especially as the industrial machine tool CNC machine tools, often the requirements for precision, will reach the point of 0.00 microns.

This is only a machine tool that meets the needs of Huayang Power for automotive workpieces, and if it rises to a machine tool that can be used to process electronic integrated precision components, its precision is required to reach the point of nanometers.

Of course, such a means,Only the Americans or the Japanese,And the Germans can master,At present, as far as the machine tool manufacturing industry of the Celestial Empire is concerned,To be able to keep up with the pace of shijie,It's very good。

As a machine tool research institute under Huayang Seiko, it was established from a poor and white place, although they are relatively high, there are some high-precision five-axis linkage CNC machine tools from Japan that Jin Xiaoqiang got from Japan, Danshi wants to compare with those shijie-level machine tool manufacturing predators, they still have a long way to go.

Not to mention the comparison with the world's large-scale high-precision machine tool manufacturers, even compared with the two manufacturers of Nanyang Machine Tool and Dalian Machine Tool in the Celestial Empire, Huayang Seiko's Machine Tool Research Institute is just a child who has just begun to start.

Don't look at Nanyang machine tool and Dalian machine tool, although the machine tool made is stupid and simple, compared with the international machine tool There is a considerable gap, Danshi people are also immersed in the machine tool industry for decades of enterprises, with a very solid foundation, and system theory.

Our Huayang Seiko Machine Tool Research Institute, compared with others, is just a child, although the talent and equipment, as well as the research atmosphere compared to them, are considered to be stronger than them, Danshi to talk about the real foundation, than others are far worse.

Zhang Hainan as a scientific researcher who has been engaged in the research of the machine tool industry for nearly 20 years, is very clear about this point, so although Jin Xiaoqiang gave him very favorable conditions, to him and his research and development method, to create the best scientific research conditions, Danshi still does not plan to use the way to train his employees, he uses the most stupid, Danshi is indeed the most solid way to train his team.

They began to manufacture machine tools, not directly from the Mazak machine tool that Jin Xiaoqiang gave them, but from the simplest machine tool bed design and manufacturing.

And when he first formulated this development plan, his group of young and vigorous students majoring in mechanical automation from major universities across the country still did not understand.

Some people even went to Jin Xiaoqiang to reflect the situation, saying that they could not understand Zhang Hainan's development plan.

After all, in everyone's opinion, there are more than 200 people, gathered together, disassembled and assembled Mazak's machine tools, and then reassembled, surveyed and mapped, operated machine tools, and recorded data, and this kind of work Yijing has been doing for almost two years. …,

About the design principle of Mazak's machine tool, how to install, how to reset, how to work, and even the CNC model and electronic control system of this machine tool, everyone has cracked it clearly, with such a foundation, why go back to the most basic, the most untechnical design of the machine tool bed?

However, when Jin Xiaoqiang faced these students who came to him to react to the problem, he just said a word, went back to study, followed the pace of Engineer Zhang, don't be convinced, and waited for the bed of the machine tool to speak.

In this way, the students reluctantly returned to the airport research institute and continued to work with Zhang Hainan on the design of the machine tool bed.

Zhang Hainan's approach to how to convince these students is also very simple, since they are willing to do it, then directly according to the size of the Japanese machine tool parts, as well as the installation ideas, the installation process, completely 100% copy of a machine tool, and then let them use this assembly machine tool to compare with the two Mazak machine tools for finishing.

I don't know if I don't know, I was shocked when I got it, it turned out that this seems to be a simple machine tool bed design, and there is so much knowledge.

The machine tool bed is assembled by hundreds of thousands of steel parts, including cast parts, welded parts, these parts in the process of public security processing, each itself has a certain internal stress, and then when these parts are combined together by assembly and welding methods, they may not be seen in the short term.

However, after a long time, or when the impact of various external forces and vibrations to be faced during machining, the internal stress of these assemblies will come to a collective explosion.

All kinds of internal stresses conflict together, it will have a fatal impact on the stability of the machine tool, and the precision required for finishing, there is the problem of noise, the noise of the machine tool made by the Japanese is almost inaudible, but the noise of the machine tool made by them is not to mention, and Nanyang Machine Tool Factory, as well as those machine tools produced by Dalian Machine Tool Factory.

After such a simple experiment, these students were convinced, it turned out that the manufacture of the machine tool bed is not simple, and it is not simple to complete.

Looking back and thinking about it, it is no wonder that when dismantling the machine tools of the Japanese, Mr. Zhang was so nervous, and even let them even let them carry out very accurate surveying and mapping of the screws screwed by the Japanese on the machine tools.

Why do people use so much force to screw and why they screw so many times, they are all knowledgeable, and the purpose of this is to solve the conflict of internal stress of the machine tool bed, so that the machine tool can reach a perfect balance state when finishing!

After understanding this truth, these students are no longer as frizzy as at the beginning, everyone agreed with Mr. Zhang's machine tool research and development plan, to do it solidly, starting from the first step of the machine tool bed.

However, when Zhende began to study, everyone found out that just how to solve the internal stress conflict between the parts of the machine tool bed, let everyone scratch the brain.

Most of the bed parts of these machine tools are steel castings and machined parts, which are more or less pure in a certain internal stress.

If you use these parts to assemble a car or something, it may not have such high requirements, but if these parts are required to assemble an industrial machine that can process more precision parts, the internal stress of these parts must attract their attention.

In the sixties and seventies, CNC machine tools began to develop, and the processing technology took off rapidly, people faced how to remove the internal stress of steel is not too good way, the best way is to open air aging. …,

Let these parts go through the harshest test of nature, through the sun, rain, cold, heat, day and night changes, seasonal changes and so on, so that the internal stress of these parts is naturally released.

This principle is the same as the principle of taking the wood of the shipbuilding outside to be displayed in the open air when the ancient shipbuilding was shipbuilding.

However, this is a long cycle, and it also takes up space, wasting time and money, and then people also used some other methods, such as buying these steel parts to the ground for half a year, immersing them in seawater, etc., but Danshi's means of doing this are not as good as natural aging.

In the end, it was the Germans who were the first to make a breakthrough in heat treatment, using thermal aging, that is, artificial aging, to eliminate the internal stress of this material.

Later, someone invented the method of audio vibration to eliminate the internal stress, and these methods have achieved good results in eliminating the internal stress of these parts, greatly improving the processing speed of the bed frame, and now yijing has become the mainstream machine tool frame processing method.

After getting those students and unifying everyone's research and development concepts, Zhang Hainan began to take these students to begin to explore the methods and processes of processing machine tool beds step by step.

With such technology, Germany, Japan, and the United States must be strictly blockaded by the Celestial Empire, so at present, even Nanyang Machinery Factory and Dalian Machinery Factory are such a nationally famous large-scale machine tool processing enterprises.

There are not many ways to solve the internal stress of the workpiece, and many of them are still using the method of open display to release the internal stress.

This is still the advanced machine tool they process, will use such parts that have released internal stress as a bed frame, if you are faced with those small enterprises, or orders with low profits, they will not pay attention to you at all, and directly give you the parts that have not been released, or the parts that have not been released completely will be released to you to make machine tools.

It is conceivable that the machine tool that comes out of this way can have good quality, and then there is a ghost!

#c