industrial overlord

Chapter 271
"It's still not as good as people's skills."

Ma Jie took a part that had just been turned from the lathe, and after measuring it, he sighed helplessly.

"Ma Gong, is the accuracy still not up to par?" Mechanic Yang Wenyong asked annoyedly as he stood beside Ma Jie.

"It still hasn't reached its original technical standard." Ma Jie said, seeing Yang Wenyong's disappointed expression, he quickly comforted him: "However, this is already very good, much better than the precision of domestic lathes."

"But this is not a domestic lathe." Yang Wenyong said, "I only replaced two shafts, and both shafts are exactly the same as the original shafts, but why can't the accuracy be achieved?"

Ma Jie patted Yang Wenyong on the shoulder and said, "Wenyong, this is the difference in technical level. Not to mention that we have replaced the domestic shaft, it is the original machine tool. If we disassemble it and put it back together, the accuracy will drop by one level."

"What's the reason?" Yang Wenyong's stubbornness rose again, and he insisted on Ma Jie explaining it clearly.

They were in the maintenance workshop of the machine tool company, which was full of used machine tools that had just been shipped from Germany.A group of workers are sorting out these junk goods. Some machine tools can be repaired by replacing parts, while others can only be disassembled, and the usable parts can be removed as spare parts for other machine tools.

Yang Wenyong was in charge of the restoration of an old lathe. At first glance, the old lathe looked rusty, but after inspection, it was found that the damage was not serious.There was a short circuit in its electrical part, and a control circuit board was burned out, and in the mechanical part, two shafts were worn to varying degrees.

The failure of the electrical part is not difficult. Wei Jingwen's Electronics Research Institute is specialized in repairing this kind of failure. An electronic engineer came and replaced a few components, and the circuit board was repaired.The two damaged shafts are a troublesome matter, and this part of the repair is done by Yang Wenyong.

After several years of hard work, Yang Wenyong is now a well-ranked technician in the machine tool company. He can afford turning, milling, planing and grinding. Now his main focus is the assembly of machine tools.Lin Zhenhua said that machine tool companies cannot only produce machine tool accessories forever, and sooner or later they will develop into complete machine tools.

After receiving the task, Yang Wenyong dismantled the lathe into eight pieces, removed the two damaged shafts, and then asked the technical department to help produce the drawings. Yang Wenyong processed two new shafts himself.The axis precision requirements on German machine tools are very high, but the current equipment conditions of the machine tool company are also very good, with dozens of high-precision machine tools imported from abroad.The shaft processed by Yang Wenyong is almost the same as the original shaft.

Afterwards, Yang Wenyong spent a few more days derusting all the rusted places on the machine tool, and replaced some severely corroded parts with domestic parts.After all the work was completed, Yang Wenyong reassembled the machine tool according to its original appearance, and happily used it to process a part that required high precision.

However, the difference in quality appeared in this way. Yang Wenyong thought that his repair work was impeccable, but after Ma Jie measured the parts he processed, he told him with great regret: the repaired machine tool has the same machining accuracy as this lathe. Compared with the original level, there is a difference of one level.

"How could this be?" Yang Wenyong was depressed.

Ma Jie patted Yang Wenyong on the shoulder and said: "Wen Yong, you can't accept it. The precision of German equipment ranks first in the world. This is closely related to their processing level and the quality of workers. After all, our country has no This kind of industrial tradition is called technology inferior to human beings."

"I don't believe it." Yang Wenyong shook his head and said, "Ma Gong, didn't you say that there are also young workers in German factories, who are about my age, why can't I assemble the precision that they can assemble? "

"This..." Ma Jie really didn't know how to explain it to Yang Wenyong.

"Wen Yong, let me give you an analogy." The old fitter He Shihua came over and said to Yang Wenyong: "Look, the turning tool is installed on the screw, the screw is installed on the bearing, and the bearing is fixed on the workbench. If the work There is a deviation of one wire when the table is installed. The bearing is offset by one wire on the workbench, and another wire is offset when the screw is installed. In this way, it is a large deviation. The deviation of one wire, in the assembly Time is allowed, but if you add up one by one, the accuracy will not meet other people's standards."

"So, how did the Germans assemble it?" Yang Wenyong asked.

He Shihua said: "It's the same when they assemble. But they understand the structure of the entire machine tool and know how to adjust the deviation. If the workbench is biased, then when they install the bearings, they will consciously deflect in the other direction, so that The two sides correct each other, and the final cumulative deviation will be very small."

Yang Wenyong said: "Why can't we do this?"

He Shihua said: "Of course we can do the same. However, people's experience is accumulated after installing thousands of machine tools, and then passed down from generation to generation to form today's experience. We have not installed so many times, so It’s not as good as they understand. For example, if I’m installing a bicycle, I can see where it’s wrong at a glance. But when it comes to installing a machine tool, I don’t know anything about it.”

"I understand." Yang Wenyong nodded and said.

"Okay, Wen Yong, this lathe is ready for use." Ma Jie said, "Don't be discouraged. Although its accuracy does not meet the original design requirements, it is still very good. The brand new price of this lathe is one It cost more than 7000 US dollars, and we only spent less than 500 US dollars, and we made a lot of money."

"Well, I see." Yang Wenyong replied.However, in his heart, he was not as optimistic as Ma Jie. He was still thinking, why others can do it, but he can't?He Shihua said that people have assembled thousands or tens of thousands of times to form the experience, the big deal is that they have to assemble thousands or tens of thousands of times, isn't it okay?
At the other end of the workshop, Lao Dao and Wei Jingwen were disassembling a circuit board.This batch of circuit boards was also junk bought by Qiao Hai in Germany, stuffed in a container and sent to Xunyang.When Lao Dao and Wei Jingwen saw these circuit boards, they couldn't move. Although they were all old boards, most of the components on them were still in good condition. These components were hard to buy in China.

"This is a KM502 chip, which integrates 2000 transistors. It can perform functions such as filtering, frequency division, and amplification on one chip. The market price is US$300." Lao Dao introduced it to Wei Jingwen like a treasure.

"Why, do you want this too?" Wei Jingwen stared at Lao Dao with wide eyes.In the past few days, whenever there are some good components, Lao Dao always picks them first, which makes Wei Jingwen very dissatisfied.He also complained about this to Lin Zhenhua, but Lin Zhenhua didn't support him, he just said that Lao Dao belonged to the investor and let him take what he wanted.

Regarding Lao Dao, Wei Jingwen's attitude is also very contradictory. Lao Dao is very familiar with integrated circuits, and his knowledge in this area is of great help to Wei Jingwen.Wei Jingwen is an old-fashioned college student majoring in electronics. His foundation is good enough, but he doesn't know enough about the integrated circuit chips that have appeared in recent years.There are many chips, if Lao Dao didn't explain them to Wei Jingwen, Wei Jingwen wouldn't even know what they were used for.Lao Dao could not only tell the models and functions of these chips, but even draw a simple wiring diagram, which saved Wei Jingwen from many detours.

As for the allocation of components, in fairness, Lao Dao doesn't have much appetite. He only needs some very special chips and other special components, and most of the rest are left to Wei Jingwen.

"This KM502 can be used in navigation equipment, it is very useful for us..." Lao Dao explained apologetically.

Wei Jingwen asked: "Old Dao, what do you guys do? Why do I feel that the things you want are all out of the way. It seems that you are involved in flying in the sky and swimming in the sea. There will be no Which company does such a complicated business?"

Lao Dao chuckled and said, "I don't know what I do. My clients ask me for these things, so I have to take them away. As for what they did after they took them away, I don't know."

As Lao Dao spoke, he stretched out his electric soldering iron and ran towards each pin of the chip.Although he looks as fat as a bear, his hands and feet are very nimble. Wei Jingwen admits that his ability to disassemble chips is far inferior to that of Lao Dao.

"Okay, on this board, I only want this chip." Lao Dao removed the chip, put it in an anti-static bag, and said to Wei Jingwen: "Mr. Wei, don't be dissatisfied. Look, this There are 5 high-power tubes on the board, and these two electrolytic capacitors are also very valuable, and they belong to you. As for the others, they are worthless and can be thrown away.”

Wei Jingwen put the board aside carefully, and said to Lao Dao: "I'm not as picky as you. I want these tubes and electrolysis, and I want other resistors, capacitors, etc. Even if it is an ordinary The quality of the German products is also very good, so I am reluctant to throw them away.”

Lao Dao was surprised: "Mr. Wei, you are not going to tell me that you have to remove every component on these boards, are you?"

"Why not?" Wei Jingwen asked back.

"Uh... there are only a few people in your Institute of Electronics, and you have to disassemble all these boards. When are you going to do it?" Lao Dao really worried about Wei Jingwen.

Wei Jingwen smiled and said: "Old Dao, it seems that there are things you don't know. Our manager Lin has already arranged it. Look at the workshop over there. It is our old circuit board recycling workshop. Manager Lin said , The dismantling of old circuit boards must take the road of industrialization, and we need to build a dismantling production line."

(End of this chapter)