Here again, some senior management processing technology issues were discussed, and even the processing of small parts such as gun hoops was not very important, and several people had a discussion.

If we want to discuss the processing aspect, we can't leave the machining technology of the three zones.

This is related to the entire gun body self-tightening process.

The hoop is a very simple gadget, but it is related to the strength of the barrel itself and the service life of the barrel, and even has a great impact on the accuracy.

The outside is a bit like an egg oval, and the inside, this is a standard circle, the tolerance of this hole is designed on no more than 0.012 mm, the shape is different from the current use of the domestic hoop, the main is the position of the small end of the non-standard oval, this is not the processing of a ring, and then cut, connected to the old hoop processing as simple. The two parts of the gun hoop, that is, a ring, are machined with grooves on one side and bosses on the other, and the bosses are connected with the grooves on the other side.

In other words, it is necessary to make the outlet like a hinge, with a hole in the middle, and connect it by a pin. As a result, the requirements for machining accuracy and processing equipment have increased all of a sudden.

If it's just ordinary hoop machining, this is not a problem.

This kind of cannon hoop using 30CrMnSiA material has a relatively high hardness, and for this era, the processing is also a difficult material.

When the two parts are finally assembled, they must be like one part, and there are very high requirements for concentricity, roundness, parallelism and other geometric tolerances.

Ordinary machine tool processing. Basically, it is difficult to achieve, which requires a kind of equipment that is not very sufficient - CNC machining center!

This question. By now, there is no way to avoid it.

Xie Heping saw that this head was big. Yu Jianguo also frowned.

The two CNC milling machines in the third zone do not have the function of automatic tool return. If you want to process, you can only process one part at a time and then stop processing, either to change the tool and processing program, or to change the part.

Changing tools and machining procedures takes a long time to debug the machine, and the machining efficiency will be so slow that it will be overwhelming. As for the replacement parts, this has a very big impact on the machining.

It's just a small part that's not very critical. This new tank gun has a lot of parts on it. The requirements for machining accuracy are very high, at least for the current three-zone processing capacity.

"Director Liu, can't we reduce the processing accuracy requirements? Or is it another design that is easy to process? Yu Jianguo looked at this part, Rao is a master like him, and he also has a headache.

It's not that they can't produce it, but in the state of manual production, according to the machining accuracy required above, in the end, it will consume a lot of man-hours. It will even scrap a lot to have a small number of finished products......

"There is no way, if this cannon wants to increase its power, especially the smoothbore gun, if it wants to increase the chamber pressure. This hoop is that there must not be any deviation. This is also a completely new design, if you change to a different design. We don't know if we can meet our design requirements......" Before Liu Yijiu could speak, Chen Yang told him with a serious face.

This thing. It must be processed, and it must be strictly in accordance with the design requirements above. Otherwise, it will not be effective at all.

Liu Yijiu also knows that the processing of these parts is the most common for the new generation of military equipment. If they can't solve the processing problem, they want to increase the power of the equipment, which is basically nonsense.

"The Soviet Union solved such a processing problem by using special aircraft production and building a production line, but this is not advisable for us at all, even if all domestic tank guns are replaced with this, and even the production of naval guns are handed over to us, the construction cost of a special aircraft production line will also make the processing cost of these small parts a figure that we cannot accept. And the United States and Western countries, they solve these problems, that is, CNC machine tools......" Liu Yijiu said helplessly.

Special machine production and CNC machine tool production are two solutions to solve the problem of high-precision production parts.

There is no need to compare which is better or worse.

If they are proficient in a large number of CNC machine tools, the cost of some of their cutting-edge weapons and equipment will be reduced by at least 30 percent! In order to ensure the accuracy of single-piece production, it can be used to slowly let those skilled and experienced old skilled workers slowly process with files and other tools.

Once it is produced in small batches, it will require more people and more time, and such time cannot be delayed in the development of equipment.

To establish a production line, if the design is modified, then the special machine production line must basically be changed very much, and the design product is replaced, and the entire production line will be scrapped.

"However, the CNC milling machine in our base has no way to complete the processing at one time...... "As a chief technical engineer in machining, I must be very familiar with various processing technologies. Yu Jianguo clearly knows the processing capacity of CNC machine tools in the base.

For those low-volume production parts that can rely on tooling to ensure machining accuracy, tooling can be designed.

The thing in front of you is a standard shape when the final assembly is completed, but in the processing process, it is an out-and-out special-shaped part.

It is likely that the design will be modified during the test due to various strength issues, as well as other issues found.

"Then transform the CNC machine!" Wang Shunyi, who didn't know when he arrived here, suddenly spoke. "Many of our current parts cannot meet our design requirements because of machining accuracy, and at the same time, in these aspects, we will have more high-precision parts to be machined in the future......"

Transform your CNC machine!

Liu Yijiu sighed helplessly.

Since the beginning of the Chinese New Year, Yu Jianguo has been asking them to start preparing for this work, but now Yu Jianguo has not talked about this.

This shows that they are not making much progress in this area.

"We also know, but in this regard, the workload is too huge, although Cao Zhijiang and their personnel have increased a lot, but this aspect not only requires hardware facilities, but also needs a lot of supporting software systems, and these systems have to be set ......up," Yu Jianguo said about the difficulties they are currently encountering.

Wang Shunyi didn't say anything, but set his eyes on Liu Yijiu.

At the beginning, when Liu Yijiu first arrived at the base, no one operated the CNC machine tools in the base, and the people who went abroad for training in this area did not come back. Now they have returned, but they have been intercepted by other units, because they are only a combat base, and naturally they cannot rob people with other units.

Of course, this was at a time when the Ninth Courtyard did not have the right to operate independently.

Liu Yijiu is very familiar with CNC machine tools, from the first time he used CNC machine tools, and trained the first batch of CNC operators in the base, and then to last year Cao Zhijiang made a small computer, he took the initiative to transform these CNC machine tools, so that the function of CNC machine tools is more powerful, the idea of higher processing accuracy.

The base also attaches great importance to this aspect.

With the development of new equipment projects, many parts have higher and higher requirements for precision.

In particular, the machining accuracy of the rocket engine and even the fins used to control the stability of the flight attitude has been greatly improved.

These things they make are all high-precision and cutting-edge, and they can't just make a quick board and then randomly weld it to the shell of the missile, and this is not those foreign guerrillas, as long as they can fly out, can explode, and have accuracy or not, it is not a problem.

They need accurate hits, super high lethality!

Liu Yijiu had no choice but to say that he would find a way to deal with this matter first.

Improving processing capacity is the most urgent thing at present.

"Before the CNC machine tool is not transformed, we still take the method of manual processing and try to get out the parts that meet the design requirements. The progress of research cannot be stopped...... "Wang Shunyi said.

For them, at this time, no matter how high the cost is, it is acceptable.

It is said that the United States has agreed to a technical agreement with Liu Yijiu. In other words, they now have a huge amount of funds of one billion. The odds in the back, don't even need to care, if you have money, you naturally don't care about wasting this, as long as you can make their design successful as soon as possible, and prove that it is very powerful, and then get it to the tank test site to test, once the various technical properties meet the design requirements, or the power is recognized by the big guys above, their project is considered a success.

"Yes, the progress of research cannot be stopped...... "Liu Yijiu also agrees with this." This year's college students are about to graduate, let Director Zheng urge, we need people, we need a lot of people! ”

Liu Yijiu is going crazy now, there is no one in their hands.

There is no one, and he has to do everything himself.

This incident simply killed him, after eating at noon, he didn't even have a rest, so he could only rush to the third district in a hurry, and called Cao Zhijiang over.

Cao Zhijiang didn't see Liu Yijiu for a long time, but this time he was shocked to see him, this guy is actually skinny now, his two eyes are deeply sunken, and there is no flesh on his face, let alone any blood.

"How long has it been since you had a good rest?" Liu Yijiu was speechless.

If Cao Da comes up with any problems, he will have to come to the computer side in the future.

If nothing else, just to make it easier for himself, he also had to ask about this matter. (To be continued......)