Thinking of these personal issues, Li Yao couldn't help scratching the messy hair on his head.
He devoted himself to work on the subject of invention, and did not take care of the family enough, which caused his ex-wife to divorce him.But deep down, he still didn't want to be separated from his wife and son.
"It's all money to blame. If I was as rich as I am now, Xiaoyi would not divorce me." Li Yao sighed deeply, feeling that it was too late to meet Xu Zhenming.
"Xu Dong, shall we go to the group company headquarters or Mingxin Manufacturing Company?" At this moment, Er Liu, who was driving, turned around and asked Xu Zhenming for instructions.
With fluid bearing technology, Xu Zhenming is considering how to improve the accuracy of Yiming Group's products.So he was also in a daze, and was awakened by Er Liu's question."Let's go to the CNC machine tool factory first." He waved to Er Liu.
Not long after, Xu Zhenming led Li Yao to the test workshop of the CNC machine tool factory.
There are three semi-finished five-axis linkage CNC machine tools in the workshop, all of which are heavy-duty gantry-type five-axis linkage boring and milling machine tools.There is also a working heavy five-axis machining center.
These four heavy-duty machining centers are all manufactured for the Longbow Group.Once verified, these four big guys will be sent to the secret unit of the Longbow Group to provide processing services for important parts of defense equipment.
"Um? Can our group company do this kind of large-scale CNC equipment?" Li Yao, also a mechanical expert, was shocked by the scene in front of him."Five-axis linkage! Heavy-duty gantry-type machining center! My dear, Old Shao didn't lie to me!" He muttered to himself and walked toward the heavy equipment that was working.
This equipment is processing an irregular turbofan blade, the curve is very complicated, it can not be manufactured with conventional equipment.The material of this turbofan blade is also very special, and the chips from the cutting must be recycled to the Longbow Group.
"Gong Li, I am going to change the main transmission mechanism of this equipment to fluid bearings. What medium do you think is the best?" At this time, Xu Zhenming pointed to the five-axis linkage heavy-duty CNC machine tool and asked Li Yao.
He told Li Yao that the five-axis linkage heavy-duty machining center is undergoing product demonstration and testing, and it is estimated that the demonstration will be completed in mid-August.At that time, Yiming Group will officially release five-axis CNC machine tools to the world.
"But I am still not satisfied with the accuracy of this machine tool. I hope that the next generation of products can reach an accuracy of 0.001-0.003 mm." Xu Zhenming shook his head helplessly.
The precision of ball screws, domestic precision bearings, and other machined parts produced by Yiming Group Company has not reached the perfect state. As a result, the precision of this heavy machining center can only reach 0.003-0.005 mm.It can barely be regarded as a high-precision five-axis linkage CNC machine tool, and there is still a gap with foreigners' products.
But even so, it was the first time that Li Yao heard of such high-precision CNC machine tools made in China.
"Wow, I didn't choose the wrong thing. Our group company can make such a high-precision CNC machine tool, and the prospects are limitless. If I match the fluid bearing with it, it can be considered a big contribution." Li Yao said to himself I look forward to the future.
He couldn't wait to ask to see the drawings of the transmission mechanism of this heavy machining center so that he could design the fluid bearing medium according to the drawings.
Upon hearing this, the project leader Hong Aiguo laughed a few times and looked at Xu Zhenming.The full set of drawings and assembly processes of this five-axis CNC machine tool are all highly confidential information, and ordinary people have no right to consult.
Xu Zhenming nodded at this time, "Old Hong, arrange for someone to bring the drawings, and we will study it on the spot."
"Yes!" Hong Aiguo was surprised when he heard the words. He looked at Li Yao standing beside him from the corner of his eyes, "Where is this man sacred? Why does Xu Dong have such a fancy to him?" Although he thought so, he Or arrange for his team members to follow Xu Zhenming's instructions.
After a while, a technician carried a stack of blueprints.These drawings are the drawings of the main transmission mechanism of the heavy-duty 5-axis CNC machine tool.
The more precise the equipment, the more complicated the drawing of the transmission mechanism.
The drawing of the transmission mechanism of this gantry heavy-duty CNC machine tool is the same, consisting of hundreds of drawings.After everyone looked at it for more than an hour, Li Yaocai solemnly reported to Xu Zhenming: "Xu Dong, for the sake of safety, I think this kind of transmission mechanism should use air bearings."
He told Xu Zhenming that among the fluid bearing technologies he researched, the air bearing technology is the most mature and most sure to be applied to heavy-duty machine tools."If it is a light-duty high-precision machining center, I am confident to use No. 4 oil bearings." Seeing Xu Zhenming's brows frowned slightly, Li Yao added.
Li Yao thought Xu Zhenming was not satisfied with his proposal, so he added that.
But Xu Zhenming didn't think so. "Air bearings? Americans and islanders seem to use this kind of transmission mechanism. But it is still a bit worse than the German product. But for now, it can only be done like this. "
At this point, Xu Zhenming agreed to Li Yao's proposal.He assigned Li Yao the task on the spot. After he returned, he had to replace the processing equipment and manufacturing process immediately, and make the matching air bearings as soon as possible and send it to the headquarters of Yiming Group.
"Director Hong, you can directly communicate with Mr. Li and discuss and modify the design of this heavy-duty five-axis linkage CNC machine tool." Xu Zhenming decided to immediately manufacture a new five-axis linkage CNC machine tool, whether for personal use or external sales. No problem.
Nowadays, five-axis linkage CNC machine tools are in demand in China, Pakistan Railways, the Middle East and other countries. Don’t worry about it. As said, the heavy CNC machine tools that are being tested and demonstrated are now being tested and demonstrated by Yiming Group. The price of Longbow Group is more than 60 million yuan.If it is based on market prices, Xu Zhenming shouts that 80 million yuan can be sold.
Not to mention other countries, Pakistan Railway will take it away.
For example, some countries in the Middle East will also rush to ask for goods.
Therefore, this is called the emperor's daughter not worry about marrying.Xu Zhenming is quite proud that Yiming Group's products can do this.
"Xu Dong, do we have to modify the design of the three semi-finished heavy five-axis CNC machine tools?" At this time, Hong Aiguo pointed to the other three machine tools and asked Xu Zhenming.From the bottom of his heart, he is still reluctant to modify the design of this semi-finished product.The workload is extremely large, and the most error-prone.
In other words, the design of this kind of high-precision CNC machine tool is not simple, it needs to do data model design and theoretical verification.If you want to modify a key component, you must redo the data model demonstration.The bearings in the transmission system are very important. If you want to modify it, it is equivalent to redesigning a heavy-duty CNC machine tool.
Xu Zhenming also knows the difficulty."Let's do this for the four machines in this batch. If it is redesigned, time does not allow." He hesitated, and decided on the spot to determine the next research and development project plan of the Hong Aiguo team.
After a while, Xu Zhenming remembered another good idea, "Director Hong, take me to see the basic platform system of the lithography machine. Let's talk while walking."
Ever since, Xu Zhenming and Li Yao walked to another test workshop under the leadership of Hong Aiguo.
On the way, he told Hong Aiguo, "Your team members should bring in computer professionals. Let the computer professionals write a machine tool structure design software, which can generate data models through the software."
This good idea is what Xu Zhenming just remembered, a method that many machine tool companies in the world have already used.
Use the software method to establish the machine tool data model, prove it in the computer software, and then start to manufacture the machine tool, the speed is fast, and the research and development cost is much lower.Foreign countries use this method to design machine tools, but there is no research in this area in our country. The gap can be imagined.
"Well... Xu Dong's method is better. We can also substitute the test database into the data model algorithm." Hong Aiguo obviously understood Xu Zhenming, and laughed excitedly.
Not long after, they came to a constant temperature and dust-free test workshop.
There is a platform similar to a horizontal machining center in this workshop.There are two small platforms with two installation positions on the platform. The processing surface is very smooth, and it is not an exaggeration to describe it as a mirror.
This platform mechanism is the basic platform system of the lithography machine, and two stations will be installed on it.One station is used for photolithography of silicon wafers, and one station is used for inspection of wafers.
This method of processing is called a duplex lithography machine, and there is currently no such equipment in the world.If this KrF lithography machine of Yiming Group can be successfully developed, it will be the world's first dual-station lithography machine.
This is exciting to think about, but it is very difficult to realize!
The alignment accuracy of the basic platform of the lithography machine is extremely high, requiring 0.003-0.01 microns. How many companies in the world can do it?
Therefore, do not underestimate this lithography basic platform system, which is not very large. Every spare part is processed and the precision requirements are very high.
Xu Zhenming called Li Yao to let him participate in the improvement of the main transmission mechanism and apply the air bearing to the platform of the lithography machine.
"Is our group company doing such sophisticated equipment?" After hearing Xu Zhenming's introduction, Li Yao was completely shocked.He heard Xu Zhenming said to make a lithography machine, but he did not know that the precision requirements of the lithography machine would be so high.
What is the concept of repeat positioning accuracy of 0.003-0.01 microns?It can be seen with the naked eye that there is a deviation, and the error can only be measured by the laser positioning system.
However, the domestic sight of this kind of precision ranging instrument does not seem to exist, only Yiming Group has made several sets of imported components and used them.Even if there are no key units like Longbow Group, they can only order from Yiming Group.
Therefore, Li Yao has never heard of this kind of high-precision measuring instrument.He looked at Xu Zhenming suspiciously, and said in his heart: "Can our group company make this kind of precision equipment?"
Xu Zhenming seemed to be able to understand Li Yao's inner thoughts.
"Li Yao, you don’t have to worry about other issues. Just provide me with the air bearing. The base platform of the lithography machine requires a very high amount of vibration. We have adopted a hydraulic oil system to absorb vibration, following the principle of fluid bearing. very similar."
Xu Zhenming waved to Li Yao, telling him not to focus on other places.
He told Li Yao not to underestimate such platform institutions.Through the buffer mechanism of hydraulic oil and air chamber, the amount of vibration during platform movement has been reduced to a minimum.
After listening to this introduction, Li Yao gave Xu Zhenming a good note: "Xu Dong, according to the principles of fluid mechanics, I recommend that the shock absorption system of this equipment use pure hydraulic oil. Air and hydraulic pressure should not be mixed. Suitable, the thermal expansion system is different, which will affect the accuracy."
He is quite expert in this area of technology. When inventing the fluid bearing, he had done experiments on various fluid media.
Hearing this, Hong Aiguo suddenly became energetic.
"Mr. Li, can you give us a copy of your fluid medium test database? If so, we will avoid many detours." He smiled and looked at Li Yao. Although he knew his request was a bit excessive, he still proposed it. An unreasonable request.
These fluid medium test data are Li Yao's hard work for more than ten or two decades, and support data for fluid bearing patent technology.Under normal circumstances, how can Li Yao analyze data with others?
Therefore, after Hong Aiguo made this request, he felt a little embarrassed and turned his attention to Xu Zhenming.He hoped that Xu Zhenming could help him speak and get Li Yao's data.
But how can Xu Zhenming say such a request?This is the same as Gui Changshu asking him for the foundry process technology. Will Xu Zhenming agree?
Therefore, Xu Zhenming could only smile and took out his mobile phone to call Hu Mingzhen.He wanted Hu Mingzhen, the designer of this lithography machine, to listen to Li Yao's opinions and modify the principle of the transmission mechanism and shock absorption system of this lithography machine.
At this time, Li Yao made an unexpected decision that made Xu Zhenming.
"Okay, Director Hong, I will send you a fax after I go back and send you the test data of the fluid medium." He smiled lightly and had no idea of keeping technical secrets.
Xu Zhenming's move by Li Yao moved Xu Zhenming, "I did not read the wrong person. It is completely correct to give this nerd engineer more shares."
Thinking of this, Xu Zhenming immediately dialed Hu Mingzhen’s mobile phone number and asked Hu Mingzhen to come to the CNC machine tool factory’s test workshop to discuss technical issues.
Soon after, Hu Mingzhen hurried over with a few team members.
All of them are happy, as if something happy happened to them.Xu Zhenming could see it too, because Li Yao was present, he didn't ask much.
"Mr. Hu, this is Li Yao, an expert in fluid mechanics. The fluid bearing technology he invented should be a world-class technology." Xu Zhenming introduced Li Yao to Hu Mingzhen and asked Hu Mingzhen to join the technical discussion team. .
In a word, because the light source system of the lithography machine will be delayed, the basic system of this KrF lithography machine can be redesigned, or the transmission mechanism and the shock absorption system can be modified.
After hearing this introduction, Hu Mingzhen suddenly laughed with joy, "Mr. Li, you are welcome to teach us the knowledge of fluid mechanics."
After saying these kind words, he stopped being polite and opened the drawings of the basic system of the lithography machine, and asked Li Yao to review the drawings and discuss technical issues together.
Thinking of these personal issues, Li Yao couldn't help scratching the messy hair on his head.
He devoted himself to work on the subject of invention, and did not take care of the family enough, which caused his ex-wife to divorce him.But deep down, he still didn't want to be separated from his wife and son.
"It's all money to blame. If I was as rich as I am now, Xiaoyi would not divorce me." Li Yao sighed deeply, feeling that it was too late to meet Xu Zhenming.
"Xu Dong, shall we go to the group company headquarters or Mingxin Manufacturing Company?" At this moment, Er Liu, who was driving, turned around and asked Xu Zhenming for instructions.
With fluid bearing technology, Xu Zhenming is considering how to improve the accuracy of Yiming Group's products.So he was also in a daze, and was awakened by Er Liu's question."Let's go to the CNC machine tool factory first." He waved to Er Liu.
Not long after, Xu Zhenming led Li Yao to the test workshop of the CNC machine tool factory.
There are three semi-finished five-axis linkage CNC machine tools in the workshop, all of which are heavy-duty gantry-type five-axis linkage boring and milling machine tools.There is also a working heavy five-axis machining center.
These four heavy-duty machining centers are all manufactured for the Longbow Group.Once verified, these four big guys will be sent to the secret unit of the Longbow Group to provide processing services for important parts of defense equipment.
"Um? Can our group company do this kind of large-scale CNC equipment?" Li Yao, also a mechanical expert, was shocked by the scene in front of him."Five-axis linkage! Heavy-duty gantry-type machining center! My dear, Old Shao didn't lie to me!" He muttered to himself and walked toward the heavy equipment that was working.
This equipment is processing an irregular turbofan blade, the curve is very complicated, it can not be manufactured with conventional equipment.The material of this turbofan blade is also very special, and the chips from the cutting must be recycled to the Longbow Group.
"Gong Li, I am going to change the main transmission mechanism of this equipment to fluid bearings. What medium do you think is the best?" At this time, Xu Zhenming pointed to the five-axis linkage heavy-duty CNC machine tool and asked Li Yao.
He told Li Yao that the five-axis linkage heavy-duty machining center is undergoing product demonstration and testing, and it is estimated that the demonstration will be completed in mid-August.At that time, Yiming Group will officially release five-axis CNC machine tools to the world.
"But I am still not satisfied with the accuracy of this machine tool. I hope that the next generation of products can reach an accuracy of 0.001-0.003 mm." Xu Zhenming shook his head helplessly.
The precision of ball screws, domestic precision bearings, and other machined parts produced by Yiming Group Company has not reached the perfect state. As a result, the precision of this heavy machining center can only reach 0.003-0.005 mm.It can barely be regarded as a high-precision five-axis linkage CNC machine tool, and there is still a gap with foreigners' products.
But even so, it was the first time that Li Yao heard of such high-precision CNC machine tools made in China.
"Wow, I didn't choose the wrong thing. Our group company can make such a high-precision CNC machine tool, and the prospects are limitless. If I match the fluid bearing with it, it can be considered a big contribution." Li Yao said to himself I look forward to the future.
He couldn't wait to ask to see the drawings of the transmission mechanism of this heavy machining center so that he could design the fluid bearing medium according to the drawings.
Upon hearing this, the project leader Hong Aiguo laughed a few times and looked at Xu Zhenming.The full set of drawings and assembly processes of this five-axis CNC machine tool are all highly confidential information, and ordinary people have no right to consult.
Xu Zhenming nodded at this time, "Old Hong, arrange for someone to bring the drawings, and we will study it on the spot."
"Yes!" Hong Aiguo was surprised when he heard the words. He looked at Li Yao standing beside him from the corner of his eyes, "Where is this man sacred? Why does Xu Dong have such a fancy to him?" Although he thought so, he Or arrange for his team members to follow Xu Zhenming's instructions.
After a while, a technician carried a stack of blueprints.These drawings are the drawings of the main transmission mechanism of the heavy-duty 5-axis CNC machine tool.
The more precise the equipment, the more complicated the drawing of the transmission mechanism.
The drawing of the transmission mechanism of this gantry heavy-duty CNC machine tool is the same, consisting of hundreds of drawings.After everyone looked at it for more than an hour, Li Yaocai solemnly reported to Xu Zhenming: "Xu Dong, for the sake of safety, I think this kind of transmission mechanism should use air bearings."
He told Xu Zhenming that among the fluid bearing technologies he researched, the air bearing technology is the most mature and most sure to be applied to heavy-duty machine tools."If it is a light-duty high-precision machining center, I am confident to use No. 4 oil bearings." Seeing Xu Zhenming's brows frowned slightly, Li Yao added.
Li Yao thought Xu Zhenming was not satisfied with his proposal, so he added that.
But Xu Zhenming didn't think so. "Air bearings? Americans and islanders seem to use this kind of transmission mechanism. But it is still a bit worse than the German product. But for now, it can only be done like this. "
At this point, Xu Zhenming agreed to Li Yao's proposal.He assigned Li Yao the task on the spot. After he returned, he had to replace the processing equipment and manufacturing process immediately, and make the matching air bearings as soon as possible and send it to the headquarters of Yiming Group.
"Director Hong, you can directly communicate with Mr. Li and discuss and modify the design of this heavy-duty five-axis linkage CNC machine tool." Xu Zhenming decided to immediately manufacture a new five-axis linkage CNC machine tool, whether for personal use or external sales. No problem.
Nowadays, five-axis linkage CNC machine tools are in demand in China, Pakistan Railways, the Middle East and other countries. Don’t worry about it. As said, the heavy CNC machine tools that are being tested and demonstrated are now being tested and demonstrated by Yiming Group. The price of Longbow Group is more than 60 million yuan.If it is based on market prices, Xu Zhenming shouts that 80 million yuan can be sold.
Not to mention other countries, Pakistan Railway will take it away.
For example, some countries in the Middle East will also rush to ask for goods.
Therefore, this is called the emperor's daughter not worry about marrying.Xu Zhenming is quite proud that Yiming Group's products can do this.
"Xu Dong, do we have to modify the design of the three semi-finished heavy five-axis CNC machine tools?" At this time, Hong Aiguo pointed to the other three machine tools and asked Xu Zhenming.From the bottom of his heart, he is still reluctant to modify the design of this semi-finished product.The workload is extremely large, and the most error-prone.
In other words, the design of this kind of high-precision CNC machine tool is not simple, it needs to do data model design and theoretical verification.If you want to modify a key component, you must redo the data model demonstration.The bearings in the transmission system are very important. If you want to modify it, it is equivalent to redesigning a heavy-duty CNC machine tool.
Xu Zhenming also knows the difficulty."Let's do this for the four machines in this batch. If it is redesigned, time does not allow." He hesitated, and decided on the spot to determine the next research and development project plan of the Hong Aiguo team.
After a while, Xu Zhenming remembered another good idea, "Director Hong, take me to see the basic platform system of the lithography machine. Let's talk while walking."
Ever since, Xu Zhenming and Li Yao walked to another test workshop under the leadership of Hong Aiguo.
On the way, he told Hong Aiguo, "Your team members should bring in computer professionals. Let the computer professionals write a machine tool structure design software, which can generate data models through the software."
This good idea is what Xu Zhenming just remembered, a method that many machine tool companies in the world have already used.
Use the software method to establish the machine tool data model, prove it in the computer software, and then start to manufacture the machine tool, the speed is fast, and the research and development cost is much lower.Foreign countries use this method to design machine tools, but there is no research in this area in our country. The gap can be imagined.
"Well... Xu Dong's method is better. We can also substitute the test database into the data model algorithm." Hong Aiguo obviously understood Xu Zhenming, and laughed excitedly.
Not long after, they came to a constant temperature and dust-free test workshop.
There is a platform similar to a horizontal machining center in this workshop.There are two small platforms with two installation positions on the platform. The processing surface is very smooth, and it is not an exaggeration to describe it as a mirror.
This platform mechanism is the basic platform system of the lithography machine, and two stations will be installed on it.One station is used for photolithography of silicon wafers, and one station is used for inspection of wafers.
This method of processing is called a duplex lithography machine, and there is currently no such equipment in the world.If this KrF lithography machine of Yiming Group can be successfully developed, it will be the world's first dual-station lithography machine.
This is exciting to think about, but it is very difficult to realize!
The alignment accuracy of the basic platform of the lithography machine is extremely high, requiring 0.003-0.01 microns. How many companies in the world can do it?
Therefore, do not underestimate this lithography basic platform system, which is not very large. Every spare part is processed and the precision requirements are very high.
Xu Zhenming called Li Yao to let him participate in the improvement of the main transmission mechanism and apply the air bearing to the platform of the lithography machine.
"Is our group company doing such sophisticated equipment?" After hearing Xu Zhenming's introduction, Li Yao was completely shocked.He heard Xu Zhenming said to make a lithography machine, but he did not know that the precision requirements of the lithography machine would be so high.
What is the concept of repeat positioning accuracy of 0.003-0.01 microns?It can be seen with the naked eye that there is a deviation, and the error can only be measured by the laser positioning system.
However, the domestic sight of this kind of precision ranging instrument does not seem to exist, only Yiming Group has made several sets of imported components and used them.Even if there are no key units like Longbow Group, they can only order from Yiming Group.
Therefore, Li Yao has never heard of this kind of high-precision measuring instrument.He looked at Xu Zhenming suspiciously, and said in his heart: "Can our group company make this kind of precision equipment?"
Xu Zhenming seemed to be able to understand Li Yao's inner thoughts.
"Li Yao, you don’t have to worry about other issues. Just provide me with the air bearing. The base platform of the lithography machine requires a very high amount of vibration. We have adopted a hydraulic oil system to absorb vibration, following the principle of fluid bearing. very similar."
Xu Zhenming waved to Li Yao, telling him not to focus on other places.
He told Li Yao not to underestimate such platform institutions.Through the buffer mechanism of hydraulic oil and air chamber, the amount of vibration during platform movement has been reduced to a minimum.
After listening to this introduction, Li Yao gave Xu Zhenming a good note: "Xu Dong, according to the principles of fluid mechanics, I recommend that the shock absorption system of this equipment use pure hydraulic oil. Air and hydraulic pressure should not be mixed. Suitable, the thermal expansion system is different, which will affect the accuracy."
He is quite expert in this area of technology. When inventing the fluid bearing, he had done experiments on various fluid media.
Hearing this, Hong Aiguo suddenly became energetic.
"Mr. Li, can you give us a copy of your fluid medium test database? If so, we will avoid many detours." He smiled and looked at Li Yao. Although he knew his request was a bit excessive, he still proposed it. An unreasonable request.
These fluid medium test data are Li Yao's hard work for more than ten or two decades, and support data for fluid bearing patent technology.Under normal circumstances, how can Li Yao analyze data with others?
Therefore, after Hong Aiguo made this request, he felt a little embarrassed and turned his attention to Xu Zhenming.He hoped that Xu Zhenming could help him speak and get Li Yao's data.
But how can Xu Zhenming say such a request?This is the same as Gui Changshu asking him for the foundry process technology. Will Xu Zhenming agree?
Therefore, Xu Zhenming could only smile and took out his mobile phone to call Hu Mingzhen.He wanted Hu Mingzhen, the designer of this lithography machine, to listen to Li Yao's opinions and modify the principle of the transmission mechanism and shock absorption system of this lithography machine.
At this time, Li Yao made an unexpected decision that made Xu Zhenming.
"Okay, Director Hong, I will send you a fax after I go back and send you the test data of the fluid medium." He smiled lightly and had no idea of keeping technical secrets.
Xu Zhenming's move by Li Yao moved Xu Zhenming, "I did not read the wrong person. It is completely correct to give this nerd engineer more shares."
Thinking of this, Xu Zhenming immediately dialed Hu Mingzhen’s mobile phone number and asked Hu Mingzhen to come to the CNC machine tool factory’s test workshop to discuss technical issues.
Soon after, Hu Mingzhen hurried over with a few team members.
All of them are happy, as if something happy happened to them.Xu Zhenming could see it too, because Li Yao was present, he didn't ask much.
"Mr. Hu, this is Li Yao, an expert in fluid mechanics. The fluid bearing technology he invented should be a world-class technology." Xu Zhenming introduced Li Yao to Hu Mingzhen and asked Hu Mingzhen to join the technical discussion team. .
In a word, because the light source system of the lithography machine will be delayed, the basic system of this KrF lithography machine can be redesigned, or the transmission mechanism and the shock absorption system can be modified.
After hearing this introduction, Hu Mingzhen suddenly laughed with joy, "Mr. Li, you are welcome to teach us the knowledge of fluid mechanics."
After saying these kind words, he stopped being polite and opened the drawings of the basic system of the lithography machine, and asked Li Yao to review the drawings and discuss technical issues together.
