Super military empire

Here again, I discussed the processing technology of some senior executives. Even the processing of small parts such as gun hoops, which is not very important, have been discussed with a few people.

If you want to discuss the processing aspect, naturally you can't leave the three-zone mechanical processing technology.

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

The gun hoop is a 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 ellipse of an egg, while inside, this is a standard circle. The tolerance of this hole is designed to be no more than 0.012 mm. The shape is different from the current domestic gun hoop, mainly the non-standard elliptical small end. Position, this is not as simple as processing a ring and then cutting it apart to process the connected old gun hoop.The two parts of the gun hoop, that is, a ring has a groove on one side and a boss on the other side, and the boss is connected with the groove on the other side.

That is to say, it is necessary to process the outlet like a hinge, with a hole in the middle, and connect it with a pin.As a result, the requirements for processing accuracy and processing equipment are immediately increased.

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

This kind of gun hoop that uses 30crmnsia material has a relatively large hardness. For this era, processing is also the kind of material that is difficult to process.

When the two parts are finally assembled, they must be like one part. They have very high requirements on the shape and position tolerances such as coaxiality, roundness, parallelism, etc.

Ordinary machine tool processing is basically difficult to achieve, which requires a kind of equipment that is not very sufficient in the base-CNC machining center!

This problem, until now, there is no way to avoid it.

When Xie Heping saw this big head, Yu Jianguo also frowned.

The two CNC milling machines in three zones do not have the function of automatic tool return.If you want to process, you can only stop processing after one process is processed for one part, either by changing the tool and processing program, or changing the part.

Tool change and processing procedures require a relatively long time for machine tool debugging, and the processing efficiency will be too slow to make people crash.As for changing parts, this has a very big impact on processing.

This is just a small part that is not very critical.On this new tank gun, many parts have very high requirements for processing accuracy, at least for the current three-zone processing capacity.

"Director Liu, can't we reduce the machining accuracy requirements? Or change to another design that is easy to process?" Yu Jianguo looked at this part, and it was a headache for a master like him.

They are not impossible to produce, but in the state of manual production, according to the processing accuracy required by this, in the end, this will make them consume a lot of man-hours, and even scrap a lot to have a small amount of finished products...

"There is no way. If this gun wants to increase the power, especially the smoothbore gun, if it wants to increase the bore pressure, this gun hoop must not have any out of tolerance. This is also a brand new design. If you change to another design, we don’t know. Whether it can meet our design requirements..." Before Liu Yijiu spoke, Chen Yang told him with a serious face.

This thing must be processed, and it must be strictly in accordance with the design requirements above, otherwise, the effect will not be achieved 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 used special planes to solve such processing problems and built a production line, but for us, this is simply not advisable, even if it is to replace all domestic tank guns with this type, even naval gun hoops. Leave it to us. The construction cost of a special machine production line will also make the processing cost of these small parts of us an unacceptable figure. And the United States and Western countries, they solve these problems with CNC machine tools..." Liu Yijiu was helpless To say.

Special machine production and CNC machine tool production are two solutions for high-precision production of parts.

There is no need to compare which is better.

If you are proficient with 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%!In order to ensure the accuracy, single-piece production can be used manually to slowly let those skilled and experienced old technical workers slowly use files and other tools to process.

Once small batches are produced, more people and more time will be needed for equipment development, and such time cannot be delayed.

Establish a production line, and if the design is modified, then this special machine production line must basically undergo very major changes. If the designed product is changed, the entire production line is abolished.

"However, the CNC milling machine in our base has no way to complete one processing..." As a technical chief engineer in mechanical processing, he must be very familiar with various processing techniques.Yu Jianguo clearly knows the processing capabilities of CNC machine tools in the base.

For those small batch production parts that can rely on tooling to ensure machining accuracy, tooling can be designed.

And the thing in front of us, when the final assembly is completed, is a standard shape, but in the process of processing, this is an out-and-out shaped part.

It is very likely that the design will be modified due to various strength problems and other problems found in the test.

"Then transform the CNC machine tool!" Wang Shunyi, who didn't know when he got here, said suddenly."Many of our current parts are unable to meet our design requirements due to machining accuracy problems. At the same time, in these aspects, we will have more high-precision parts to be processed in the future..."

Transform the CNC machine!

Liu Yijiu sighed helplessly.

Yu Jianguo and the others have been preparing for this work since the beginning of the New Year, but now Yu Jianguo has not taken this as an example.

This shows that they have not made much progress in this regard.

"We also know that, but in this regard, the workload is too large. Although Cao Zhijiang and his staff have increased a lot, this aspect not only requires hardware facilities, but also requires a lot of supporting software systems, and these systems have to be implemented. Setting..." Yu Jianguo explained the difficulties they are currently facing.

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

When Liu Yijiu first arrived at the base, there was no one to operate the CNC machine tools in the base, and the people who went abroad for training in this area did not return.Now that they have returned, they have been intercepted by other units, because they are only a combat preparation base, so naturally they can't compete with other units to snatch people.

Of course, this happened when the Ninth Court did not have the right to operate independently.

Liu Yijiu knows well about CNC machine tools. From the time he was the first to use CNC machine tools and trained the first batch of CNC operators in the base, then last year Cao Zhijiang made a small computer, and he took the initiative to propose a transformation. These CNC machine tools give the idea of ​​making CNC machine tools more powerful and processing precision.

The base also attaches great importance to this aspect.

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

Especially for rocket engines, and even the fins used to control the flight attitude and stability, the machining accuracy has been improved a lot.

These things they make are all high-precision and cutting-edge. They can’t just fasten the board and weld it to the shell of the missile. This is not the foreign guerrillas, as long as they can fly out, explode, and precision. There is no problem.

They need accurate hit rate and super lethality!

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

Improving processing capacity is currently the most urgent thing.

"Before the CNC machine tools are transformed, let's take manual processing and try to get the parts that meet the design requirements. The research progress cannot be stopped..." Wang Shunyi said.

For them, at this moment, 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, their Ninth Hospital now has a huge funding of one billion.You don’t even need to care about the fractions in the back. If you have money, you don’t care about wasting this point. As long as you can make their design successful as soon as possible, and prove to be very powerful, you can get it on the tank proving ground. Experiments, once the various technical performance meets the design requirements, or the power is approved by the big guys above, their project is considered a success.

"Yes, the research progress cannot be stopped..." Liu Yijiu also recognized this."This year's college students are about to graduate. Let Director Zheng urge you. We need people and a lot of people!"

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

No one, he has to do everything himself.

This incident was simply killing him. After eating at noon, he had no rest, so he hurried to the third district and called Cao Zhijiang over.

Cao Zhijiang hadn't seen Liu Yijiu for a long time. Seeing him this time gave him a shock. This guy is now skinny, with two eyes deeply recessed, and there is no meat on his face. Not even a little bloody.

"How long have you not had a good rest?" Liu Yijiu was speechless.

If Cao Da came up with any problems, he would have to come to the computer in the future.

For nothing else, just to make it easier for himself, he also has to deal with this matter.