"You guys, I hope this incident will teach you a lesson. There are many aspects to be taken into account in the design of weapons. What would you think if you were a soldier and the weight of the design itself was much lighter, allowing you to carry more things that could save your life on the battlefield, but because of the self-righteousness of the designer, you could not carry more, and even had to carry an extra kilogram when you escaped? After Liu Yijiu came down, he called Yang Shan and a few people to the cafeteria, ordered a few small stir-fries, opened a bottle of Lao Baigan, and explained to them while drinking.

"Master, we remember, you told us at the beginning that the design of weapons must take into account the use of soldiers, even if many of them are just our considerations, in fact, they may not happen, as long as it happens once, it is also a fatal flaw for weapons......" Qin Huaibao was calm.

Liu Yijiu did warn them at the beginning, and every day when designing, while teaching them all kinds of knowledge about design, he also warned them of some things that need to be paid attention to in weapon design. Among them, the design modification is the more important place.

"I know that you are angry in your hearts, this should have been my responsibility, you feel that it has nothing to do with you, but you have also been criticized by the internal circular, and you have also been fined half a year's bonus, if I used to think so. You won't realize the problem until something really happens later. This is a thing, whether you admit it or not. Weapons, unlike other mechanical designs, are meant for killing, not production. Liu Yijiu knew that although these people had no opinions on the surface, they definitely couldn't figure it out in their hearts.

Jia Ling didn't expect that she would be taught such a vivid lesson just after she went to work.

Even, she felt that Liu Yijiu was a little pretentious, the director of the base and the director of the third district had no opinion on this small accident, and he had to ask for punishment himself, and even the deputy director in charge of technology at the base and Yang Shan were punished.

No matter what she thinks of Liu Yijiu, at least, this incident has left a deep lesson in her heart.

Liu Yijiu also knows that it is useless to say anything now.

It is only after they have experienced a little more that they become aware of these problems.

For the next few days, Liu Yijiu stayed outside, not only because of a problem with the important parts of the 12.7mm sniper rifle, but also because the personnel did not arrive and could not start work. Even the preparation could not be done. He also knew what technology was in China in this era, and the base had also checked the technical information on infrared control, but found that the latest ones were all in the 70s.

298 or the National Institute of Optoelectronics cannot remain stagnant in this regard.

Only when the people over there arrived, everyone discussed the plan together.

Liang Qiang has been providing technical assistance on the aerospace side, hoping to see their chips as soon as possible, but if Cao Zhijiang doesn't come, if he wants to complete the work of the entire computer system, Liu Yijiu can't do it. Every day, I am staring at the progress of the re-feeding casing, for fear that there will be any more problems.

"Master Yu, I see that we have an EDM there, why don't we use it? If you use EDM for roughing, followed by metal cutting and finishing, wouldn't the amount of deformation be much less? Although Liu Yijiu has no opinion on the processing technology that Yu Jianguo and they re-arranged, this efficiency is too slow. Moreover, the rod milling cutter is used to mill little by little, and the cutting stress generated by the machining process makes the shape of the casing deformed very largely.

"You said those CNC machine tools that just arrived last year? None of us here can use that thing well! Besides, they have always been artificial, and ordinary milling machines have higher milling efficiency and more reliable quality......" Yu Jianguo's words made Liu Yijiu stunned.

No wonder these devices are placed in the workshop and then covered with plastic sheeting!

If he hadn't been in the workshop every day for the past few days, he really didn't know that there would be these equipment here.

These equipment, even in their time, were not completely eliminated, which shows how powerful the processing capacity is.

These craftsmen and managers don't even take these things seriously!

"The process is changed and the gun magazine is processed by electrical machining, so that the amount of deformation will be much smaller." Liu Yijiu immediately asked the gun magazine in the processing process to stop first.

Hearing Liu Yijiu's words, Yu Jianguo was a little embarrassed.

"These electrical processing equipment and CNC equipment are not the photoelectric tracking processing used by other units in our country, but need to be programmed with Morse code, and the personnel we sent to Switzerland to study have not yet returned......"

"It's not complicated, I'll make this." Liu Yijiu pursed his lips.

Tape perforation programming is much easier to control than other CNC machines. Liu Yijiu has some research on these early equipment left in the base. In their time, these things were toys to pass their time.

"Would you use this?" When he heard Liu Yijiu say that he would use those CNC machine tools covered with plastic sheets, Xie Heping was a little surprised.

"When I first came to the base, Su Mingyi still used this to embarrass me. But in the end, things changed......" Liu Yijiu nodded.

"Then you can try it." Xie Heping also has a lot of headaches about this matter. The operators of these equipment need to wait until the first batch of domestic operators are trained by the people who are sent out to learn, and they will not be transferred to their side, and I don't know how long they will have to wait.

The price of these equipment is not cheap, if it can be processed, it is still a good thing. After all, this thing can be programmed to process a lot......

Liu Yijiu did not start the machine as soon as he came up, but first conducted a study according to the German manual provided by the other party, which not only has operation and maintenance methods, but also various types of transformation methods and how to program various codes read by the paper tape perforator.

For people who are not familiar with binary code, it is a headache to get this.

While Liu Yijiu studied the instructions, he asked people to process the copper electrode as a mold according to his design drawing.

"The most frustrating thing about this stuff is that it takes a long paper tape to program. Swiss machine tools, the standard ISO code used, a total of eight digits, the eighth digit is the check code, mainly for spouses...... The letters, numbers or symbols given in the program are all pierced out of the hole according to the regulations (that is, the information hole), and the middle line is a synchronous hole, which is mainly used to synchronize the machine tool with the control system...... "Liu Yijiu after the programming was completed, while telling a few young and skilled workers selected by the machining workshop.

After the programmed paper tape is installed in the reading device, the power switch is turned on and the relatively large numerical control device that comes out separately is activated.

"Before the program can be run, we first need to do a test run to verify that the program we have written is not wrong. The best thing is to use easy-to-process materials for trial processing, but in order to ensure that there is no error in our discharge gap and avoid scrapping, so here we use the same material, and the external dimensions are left larger, and you are all experts in the correction, so I won't say much about this...... "Liu Yijiu clamped a piece of manganese steel with an external size one millimeter larger than the ordinary gun magazine on the vise on the machine tool workbench, and began to use the principle of photoelectric induction to read the code information on the paper tape.

When the paper tape on the CNC device was quickly rolled, the spark machine, which was originally motionless, also began to move.

The spark machine, unlike other CNC machine tools, is relatively simple in the processing process, and only needs to keep moving the Z-axis equipped with the electrode. This movement is not fast, but very slow.

When the EDM machine is EDM, the tool electrode and the workpiece are connected to the two poles of the pulse power supply respectively, and the working fluid is charged into the discharge gap. When the gap between the two electrodes reaches a certain distance, the pulse voltage applied on the two electrodes breaks down the working fluid, produces spark discharge, instantaneously concentrates a large amount of heat energy in the micro channel of discharge, the temperature can be as high as 10000C or more, and the pressure also changes sharply, so that the local trace metal material on the working surface is immediately melted and vaporized, and splashed into the working liquid explosively, rapidly condensed, forming solid metal particles, which are taken away by the working liquid.

Repeat this process to get the desired cavity.

"Xiao Liu, I didn't expect you to be really an all-rounder. If you had known, you should have been asked to train our technicians. With these things, it will be much easier to process in the future......" When they saw the five neatly arranged receivers in front of them, almost everyone was speechless in surprise.

They didn't expect that these idle equipment would have such a strong processing capacity.

"Director Xie, I have already taught them the basic part of the things, and I have also translated the instructions into Chinese, and the rest is to let them practice more." In this regard, don't be afraid of waste, technology, you need to do more to be able to accumulate...... "Liu Yijiu doesn't want to trouble, the matter at hand now, so he really doesn't have too much energy to train these skilled workers to learn the equipment operation technology that is about to fall behind.

After the launch of Intel's 8085 chip next year, paper tape punching CNC machines will soon be completely replaced by computer-controlled modern computers.

Those things are prohibited items for the Republic, but after the reform and opening up of the Republic next year, these devices will gradually come in......

If it weren't for the fact that these products they designed needed these simple CNC machine tools with relatively weak processing capacity, Liu Yijiu would never have done it himself.

The only advantage of these things is that under the same program control, when the tool is not worn and the machine is not malfunctioning, the processed parts are basically the same!