Intelligent Industrial Empire

"There is a good saying in the movie "Little Soldier Zhang Ga":'Don't watch you tumultuously now, be careful of the list in the future!'" Yun Fei, who had figured out everything, was full of enthusiasm.

Since then, Yunfei has stayed in the technical department and the production workshop every day. Every day, the elders guarding the technical department change drawings, and constantly discuss the rationality of various designs with Sun Lin.Yunfei has no design experience in CNC machine tools, but he has seen many CNC machine tools from Germany, Switzerland, Japan, and the United States. Basically, as long as the CNC machine tools are exported to the Chinese market, Yunfei has not used it before. Have seen.

Sun Lin has studied CNC machine tools for a lifetime. Although he has not seen the most advanced CNC machine tools abroad, he has heard of some theories used in advanced CNC machine tools. The only shortcoming is that he does not know how these theories should be. How to become reality on CNC machine tools.

For example, Sun Lin wanted to use the rack-and-pinion transmission method used by foreign heavy-duty CNC machine tools on the CNC machine tools of Jiuyi Heavy Industry, but Yunfei severely despised it.

Just kidding, the use of rack and pinion is just to ensure the rigidity of the machine tool during heavy-load processing, and the transmission accuracy is not as high as that of a ball screw.Especially the transmission speed, there is no way to compare with the transmission of the ball screw pair.Let’s not talk about whether Sun Lin can make a high-precision rack and pinion under the existing conditions. If a rack and pinion transmission is used on a small CNC machine tool, the positioning accuracy of the machine tool can be guaranteed to three wires. The moving speed is low. It is estimated that such a CNC machine tool has just been developed and will be killed by customers.

"What customers are pursuing when buying CNC machine tools is the magic horse? Machining accuracy is our machine tool manufacturer's first pursuit element. Customers are not only pursuing the machining accuracy of the machine tool, but they are also pursuing the machining efficiency of the machine tool! Rigidity reduces the cutting efficiency of machine tools! Many customers, especially our largest customer base of machine tools, are not state-owned factories, but those private enterprises and private bosses that are gradually increasing! They buy CNC machine tools mainly for earning Money." Yun Fei said to a group of Chinese and Soviet designers headed by Sun Lin and Savavsky who were discussing whether to reduce the rigidity of the machine tool.

He didn't expect that Sun Lin would actually apply the plan of using rack and pinion transmission that he killed to the surface of their 6132 CNC lathe.

"Now we must launch our products as soon as possible, otherwise we will wait until the market is divided up by other machine tool companies. Even if our products are better than others, there will not be much market."

"We must take the market as our guide. What the market needs and what kind of machine tools the customer needs, we must launch what kind of products. After our first batch of CNC lathes are marketed and recognized by customers, we will then follow the market Circumstances, customers need to develop new products. There is only one here. No matter what your ideas, rack and pinion transmission is absolutely not allowed on lathes with a turning diameter of less than 600. Denying the design plan, I will never let him pass Yes!" Yun Fei is now, but Sun Lin is not his employee.

It’s almost a month. The design of the new CNC lathe hasn’t come out yet. The design of the CNC milling machine is coming to an end. Perhaps it’s because of this that they have the pain of being idle here, they need to drive the gear rack. The design scheme uses the upper surface of a small CNC lathe.

When Sun Lin heard Yun Fei's strong tone, his face smiled instead.

Yun Fei said this, that is, as long as the first batch of 6132 small CNC machine tools designed by Jiuyi Heavy Industry have a firm foothold in the market, it is necessary to start researching heavy lathes with a turning diameter of more than one meter.

What are the advantages of small CNC machine tools?

Heavy-duty CNC machine tools are the most important key equipment in China, an increasingly industrialized country.No matter what you do, you can't extend the guide rail of a small lathe with a turning diameter of only 300 to 400 millimeters to eight meters or even ten meters, right?Even if it is added to that extent, it is impossible to produce heavy parts whose weight is counted in tons.

Rails that are not wide can not stabilize the structure at all after lengthening.

In industrial production, the production of heavy parts is the key.

The spindles of some large-scale machine tools, even dozens of tons or hundreds of tons, are simply impossible for small machine tools to drive.Not only is the design of the bed structure based on domestic production conditions, the material is also a key issue.

Now the main shaft of the CNC milling machine of Jiuyi Heavy Industry has been caught by the problem of materials.

China can now produce 42CrMnSi in small batches, but there are too many impurities in it, and it is not compared with foreign ones.

Although the quality of the imported 42CrMnSi is guaranteed, the price is incredibly high. The price per ton is tens of thousands!Yun Fei first proposed to use such materials as the main production material, but Sun Lin and several people strongly opposed it.

In the Chinese Academy of Sciences, Sun Lin and others have used this material for many experiments, but they have never succeeded.

The domestic ones are not good because of material problems, and the foreign ones are unable to meet the design requirements because of the domestic heat treatment process, which causes the machined spindle to easily experience metal fatigue under long-term high-speed rotation...

Now Jiuyi Heavy Industry has become a research workshop.

In the smelting workshop, the development of 42CrMnSi according to the ratio given by Yunfei has now begun. Similarly, the heat treatment section of the smelting workshop is constantly improving the flow of various heat treatment processes and constantly testing various heat treatment temperatures.

There is no big problem in the machining workshop. After all, many of the workshops are experienced old workers, and many of them have very good skills.Just like when Yun Fei first came to Qingfeng Machinery as a master, the performance of the car slender rod that shocked the whole factory's turners was not in the eyes of these masters who came out of the mountain. Something!

Yun Fei worked at Jiuyi Heavy Industry, but now he has never dared to show his hands in the workshop. Otherwise, his young boss would not be able to come to the stage because of the shameless workers.However, in theory, Yun Fei is quite right. He often bluffs those masters who think that they are the best in the world, 8th and 9th grade masters. If Yunfei said theories, these workers would not be able to experiment. If the design accuracy requirements on the drawings are met, or the production efficiency cannot be improved, these workers will definitely sneer at Yun Fei's idle boss who ran into the production workshop to guide him.

Every time the workers felt that it was impossible to achieve, Yun Fei casually said that he could solve many processing problems that caused these masters to have a headache.The masters don’t know the existence of Du Niang, let alone that in this world, in a certain place, there are all kinds of people who are busy at work all day long. They specially designed some precision and super precision parts for others to help. solve.

Otherwise, discuss the processing technology of various atypical and complex parts. Everyone thinks that the processing technology they arrange is the most reasonable, the most effective, and the most effective guarantee of the processing accuracy!In this way, it will be cheaper than a beginner like Yun Fei who only knows some fur.

Yun Fei's learning on Du Niang, especially those professional websites on mechanics, far exceeded what he learned in school.Because many of the things that big show off are their secrets in reality.If it weren't for the east wind to overwhelm the west wind, it would be impossible for some unrelated Xiaobai to know.Especially the setting of various parameters, those are the conclusions of numerous experiments conducted by many factories.

"Xiaoyun, the spindle sample of the testing machine has been made now, but how do we do the dynamic balance?" Sun Lin saw that the spindle of the CNC milling machine with countless steps and precision reached four levels before his eyes. Very embarrassed.

Now the processing has been completed, but Jiuyi Heavy Industry has no key equipment for dynamic balancing at all.

In the whole of China, it is estimated that there is no professional equipment for dynamic balancing of high-speed rotating spindles.

The first CNC milling machine designed by Jiuyi Heavy Industry is now short of this spindle for dynamic balance.

"Use the soil method, install rotors on both sides, and continuously measure the speed of the main shaft up to 5,000 revolutions. After stopping, remove the excess margin..." For this, Yun Fei can only use the soil method.

Even in his time, the entire city of Chengdu, capable of making relatively large shaft-type dynamic balancing equipment, would not add up to more than one slap.

If it is a heavy-duty rotating spindle that weighs hundreds of kilograms or even a ton, it needs to be balanced even more.

"Old Zhao, you and Guderian will have to do the assembly this time. If the design accuracy can be achieved this time, our 6132 and 6140 can be finalized..." In all the parts When placed in the dust-free assembly workshop, Yunfei said to Zhao Bingbiao, who was about to start the most basic mechanical assembly.

Although the previous prototype did not become the final product of Jiuyi Heavy Industry, it is not because the assembled machine tool did not reach the design accuracy, but the design from many places was not very reasonable.

Yun Fei has seen countless machine tools, even the most rubbish CNC machine tools of that era will definitely be relatively high-end CNC machine tools.Therefore, he does not want the machine tools produced by his company to be on the same level as those on the market.

To do it, you must do the best you can achieve.

If it weren't for the changing market situation, Jiuyi Heavy Industry is facing the danger of breaking the capital chain. Otherwise, Yunfei will definitely not let these CNC machine tools, which are still defective in his eyes, enter the market.