The name of the factory has not been changed yet, but next to this brand, a large and shiny brand has been added, with the characters Mingzhou Shipbuilding Industry Group written on it. This brand-new brand looks so dazzling that it makes people laugh.
The brand of the water pump factory nearby looked dim.
The water pump factory is still undergoing technical rectification, so there is no one in the factory, but there are a lot of people surrounding the technical department.
Everyone is waiting to see a big rectangular parallelepiped thing installed on a precision base.
This thing is about the same size as a wardrobe. It also has two doors on the front. It is made of transparent material. You can see the vertical columns and horizontal clamps and other devices inside. Next to the door, it says the name of Haihe No. 1 Machine Tool Factory.
Next to the words are the words five-axis linkage CNC machining center, and next to them, there is a line of small words: Teaching Experiment Prototype.
Next to this thing, there are many cables, some of which are connected to the input three-phase power, and some of which are connected to a computer nearby.
Factory director Zhang Guangrong and deputy director Wang Jinbao were in the innermost part of the crowd, watching several technicians debugging the machines. They came from Haihe No. 1 Machine Tool Factory, and the words "No. 1 Machine Tool Factory" were printed on the back of their work clothes.
.
"This thing requires a computer to operate. We have only heard of it before, but we have seen it this time." There was a lot of discussion among the crowd.
"Of course. Can a CNC machine tool be used without a computer? This thing is amazing. You can put the blank in and process the impeller directly without changing the fixture. The accuracy is very high."
"Really? So magical?"
"Then we don't know how to operate it!"
"Yes, that's right, we don't know how to operate it, how can we use it in the future?"
"Experts from other manufacturers have written a program for us, so there is no need to touch it. From now on, we only need to press a few buttons to turn on and off the machine. Do you still want to write a program? In the next life!"
Everyone was waiting in the discussion. One hour, two hours... five hours passed. Finally, the person operating the keyboard finally stopped his fingers. He had finished typing the last line of code. This was because of them.
I have already received the design drawings of the parts, and I have been designing the program all the way. Now I just type them in. If I start from scratch, it will take ten days and a half.
"Okay, it's almost done. Let's put a piece of blank in and try it!"
"Luo Gong, are you ready?" Zhang Guangrong was overjoyed.
"Luo Gong, do you want to eat something first?"
"No, let's take a look at the processing effect first." Luo Wenzhong, a senior engineer at Haihe First Machine Tool Factory, said. He pushed up his glasses. After several hours of programming, he was still exhausted.
But now, he is also looking forward to seeing the final result.
"Quick, put the blank in! Forget it, I'll do it myself." Wang Jinbao shouted. He has been driving machine tools in the factory for decades, and now he is in the most excited mood.
A shiny blank was put in and clamped firmly on the clamp. Then, the hatch was closed and the machine started.
Through the transparent hatch, you can see a magical scene inside: the workpiece is moving, and the turning tool is also moving, just like the turning tool flying on the workpiece, and the iron filings being turned out are connected into a line, bending.
Fold it into a beautiful shape.
"Our Haihe No. 1 Machinery Factory is very capable. It can already produce five-axis machining centers. With this machine, we can process the impellers of water jet propellers. Now, this kind of part is all we need!" Zhang Guangrong said very much.
excited.
"Yes, we can develop the equipment embargoed in Batumi, it's so powerful!" Wang Jinbao also said: "The Toshiba crisis in the 1980s was because Toshiba sold this high-precision processing equipment to old
Maozi, let Lao Maozi process an advanced propeller."
Luo Wenzhong smiled and pushed up his glasses: "Our country is also aware of its shortcomings in this area. As the largest machine tool factory in the country, of course our factory must overcome these technical difficulties. Since the 1980s, we have been in
We have developed our own five-axis linkage machining center.”
In the 1980s, the motherland and the West still had friendly relations, so seven or eight five-axis machining centers were obtained from the West.
Of course, these are for civilian purposes, and they even have to accept the supervision of manufacturers and are not allowed to be used for military purposes. Later, something happened, relations with the West were interrupted, and the supervisors of these machine tools also left.
How to deal with these machines has become a big trouble. The whole set is from abroad. Even if a screw is broken, it has to be imported from abroad. The supervisors of the Western machine tool factories also want to let their machine tools and equipment go away.
paralysis.
Some people suggested that these machine tools should be sealed with nitrogen to avoid damage. However, the No. 1 Machinery Factory took advantage of this opportunity to map and imitate Western CNC machine tools!
They wrote a petition for war, and their leaders went to the capital to express their determination. After many petitions, their superiors finally made up their minds and handed one of them over to them.
Two years later, they overcame various difficulties and copied a prototype. At this time, Huating No. 2 Water Pump Factory came to buy it! So they were very excited and sent the first prototype over.
Then, elite soldiers and generals were sent here to install and debug.
When foreigners sell machines, they are not taught how to write programs. If they want to produce parts, they have to ask foreigners to do it, which costs extra money. They are different, providing full door-to-door service.
If it is an advanced model, it is already very convenient to input the CAD design drawing of the part directly, and the machine can automatically program and then process the parts, but this is not possible now. The machine they copied was imported from abroad in the 1980s.
, the imported machine is from the 1970s, and if you want to process a part, you have to write the code manually one by one.
At this time, looking at the scene of internal processing of the machine, Luo Wenzhong also felt very proud. This is the first domestically produced five-axis machining center. Although it is still an experimental prototype and there are still many shortcomings, as long as there is a factory
After using it, they will continue to follow up and improve, and eventually they will reach world-class levels.
"It will take several hours to process. Should we go get something to eat first?" Zhang Guangrong asked Luo Wenzhong.
Luo Wenzhong nodded, and just as he was about to leave with his technicians, suddenly, a crisp sound appeared from the machine, and then, there was a thud.
Luo Wenzhong's expression changed, he quickly stepped forward and turned off the switch.
The clamp inside rotates slowly and finally stops. When it stops completely, open the transparent door and you can see that there is gradually an impeller-like workpiece inside, and one of the blades has been broken!
Everyone's faces looked ugly.
"It may be that the blank is defective, or there may be an error in the programming. We need to try again." Luo Wenzhong carefully checked the inside of the machining center. The broken blade flew out at high speed and hit the hard protective cover. No serious damage occurred.
ACCIDENT.
Now, we can only try again!
The blank was put in again, and everyone moved away from each other to avoid danger. Wang Jinbao personally stood on the side of the cabinet. In case of another accident, he would quickly shut down the machine.
Snapped!
The crisp sound came again.
Luo Wenzhong's face turned pale, there was a bug in the program!
The food, which had already cooled down, was brought to the machine tool processing workshop. A few people took a few random bites and continued to study the program.
One day, two days, three days, three whole days passed, and they could not find where the problem was with the program.
On the fourth day, when everyone was looking for the reason with red eyes, a voice sounded outside.
"Firstly, you are not afraid of hardship, and secondly, you are not afraid of tiredness. Your spirit deserves encouragement."
"Mr. Qin?"
"Mr. Qin is here!"
Everyone moved out of the way and allowed Qin Tao to come in. Qin Tao looked at the tortured technicians in front of the console and said, "This is the consequence of using other people's systems! We must have our own
CNC machine tool control system, otherwise it will be controlled by others."
"What do you mean?" Luo Wenzhong asked strangely. After a few days, Luo Wenzhong's head began to swell and hurt so much that he almost lost the ability to think.
"Have you found the problem with writing your own programs?" Qin Tao asked.
Luo Wenzhong shook his head: "No. We have checked repeatedly and there should be no problem. However, during the processing, accidents will occur and the processed parts will be completely scrapped."
"Have you ever thought that it's not your problem but the control system of the CNC machine tool?"
CNC machine tools use computers to control the movement of machine tools, which requires both hardware and software.
Haihe No. 1 Machine Tool General Factory is engaged in hardware. They studied hard and copied it carefully to create this prototype. However, the control system inside could not be developed by themselves, so they directly copied the control system of the imitation machine.
The system has been transplanted.
The domestically developed CNC machine tool control system was developed by the Shenyang Institute of Computing Technology. The first complete system, Blue Sky One, would not appear until 1992. Of course, this system is still very primitive.
The significance is to break the foreign technology monopoly and solve the problem of domestic CNC machine tools from scratch.
After that, they continued to work hard, and it was not until 1997 that the Lantian-3210 control system developed became truly practical.
Using the Blue Sky No. 1 system, Haihe's machine tool factory developed the XH715GY five-axis linkage high-end impeller machining center with all independent intellectual property rights. The time was also in 1992. However, before that, they already had imitation products, but
It is a control system transplanted from the imitation object. (The Hero of East China is not a satellite, it actually already exists. Of course, the quality is...)
If you use a counterfeit foreign control system, there will be problems.
"You mean, foreigners have tricked us?" Luo Wenzhong finally came to his senses.
"Since it's not our fault, it must be the fault of the control system." Qin Tao said: "Although foreigners sold us the CNC machine tools, they still kept a hand. We have to spend money on any parts we want to process.
Pay them a high price to write the program, so that they can also prevent us from using these CNC machine tools to produce special parts. Their control system has special settings. When our program reaches the 800th line, it will
Control the turning tool to move in the opposite direction."
"What?" Everyone present was shocked. Are foreigners too bad?
When they wrote the program themselves, they knew about this reserved problem, so when they wrote the program, they wrote it backwards. They didn't know it, and this caused problems!
"Only the 800th row?"
"There are also lines 1,600 and 2,400. As long as it is an integral multiple of eight hundred, this will happen once."
"Mr. Qin, how did you know?" Luo Wenzhong was extremely surprised. During processing, it was indeed the code execution error on the 800th line, but they didn't know where the error was. Now, after Qin Tao said this, they understood
, but also more confused.
They are probably the best people in the machine tool industry. They have specialized skills. Qin Tao knows shipbuilding, but he doesn’t necessarily know machine tools, and he knows so much.
How did Qin Tao know? Of course it was from his previous life experience. Although he was a shipbuilding engineer, he also had a wide range of interests. When he saw an old CNC machine tool that had been dusty for a long time in the diesel engine factory affiliated to the shipyard,
He became interested, and then he heard the angry memories of machine tool engineers.
At first, they wanted to use this imported CNC machine tool to process parts, but the program they wrote did not work. The machine tool was idle for twenty years, and domestic CNC machine tools were also used. Later, some people began to wonder about the problem with this CNC machine tool.
, and finally found out that the control program was tampered with!
So now, Qin Tao received a report from the water pump factory saying that there was a problem with the purchased CNC machine tool, and he thought that this might be the reason.
Now, of course he won't say it.
"Lao Maozi found it there." Qin Tao directly put the excuse on Lao Maozi: "I went there to investigate, Lao Maozi said it."
Anyway, Lao Maozi also has a five-axis linkage CNC milling machine, which is used to process propellers. The volume is many times that of this. Although the West has exported several five-axis linkage CNC equipment to China, it is still very vigilant and only exports such small ones.
It is okay to process a waterjet propeller impeller, but it is simply impossible to process propellers for warships and submarines with a diameter of several meters.
"Let's try it." Luo Wenzhong said: "Change the corresponding line of code and let the turning tool move in reverse."
"Reverse action, what if there is danger?" a technician said.
"What danger are we afraid of now? Let's treat a dead horse as a living horse doctor." Luo Wenzhong said: "We must take this risk."
The CNC machine tool started to run again, and everyone held their breath. Several failures made them afraid of hearing something abnormal inside. Time passed little by little, but it was still very stable inside.
The eight hundredth line of code has been executed!
It was still running inside, with the turning tool flying back and forth on the workpiece, like dancing. Finally, the program execution came to the end.
With excitement, Wang Jinbao walked over and opened the transparent door. Inside, the shining metallic impeller was so beautiful!
"Success, success!" Everyone cheered.
"Don't get too happy yet. Let's test it and see if the accuracy is up to standard." Qin Tao poured cold water on everyone.