"Mr. Scott, please come here."

In a research institute referred to by a numerical codename, Song Dingxiang accompanied a delegation of the American Carter Company led by Vice President Scott and was visiting the laboratory one by one. In Scott's view, the Chinese seem to take their visit very seriously, not only opening the doors of all laboratories for them to visit at will, but also engineers in white coats waiting in each laboratory, ready to answer their inquiries.

Scott was polite enough to his host's courtesy, smiling everywhere he went, and occasionally asking an innocuous question or two. But his attachés, on the other hand, were very interested in what the Chinese had accomplished, because it would determine how Carter would work with the Chinese in the future. As they walked, the group watched everything with the sharp eyes of the falcon, and whispered in a low voice:

"Kevin, have you noticed, the Chinese seem to be studying the moldless casting process, and the research of this process only started the year before last, how could the Chinese follow up so quickly?"

"That's not the most surprising thing for me, Roy, in that lab just now, guess what I saw, they were doing electron beam processing. Although the engineer was secretive about not revealing it, I think they must have made a breakthrough in this area. ”

"This is probably the most high-tech laboratory in China, and it's hard for me to imagine that they can master higher technology than this."

"No, you don't know the Chinese too well, they will never show you the most advanced things, they always reveal the previous generation of technology after they have better technology."

Song Dingxiang turned a deaf ear to the muttering of the Americans around him, and the things shown to the Americans in front of him were temporarily transferred from various scientific research institutions and enterprises, which is equivalent to a display of the most cutting-edge machining technology in China, and its purpose is to pave the way for the final drama. Now that they had walked to the door of a large laboratory, Song Dingxiang calmed down slightly, pushed open the door, and said to Scott and the others in a calm tone:

"Allow me to introduce me. This is our multi-axis high-speed machining center laboratory, we know that Caterpillar's technology in this area is the world's leading, we very much hope to be able to get the guidance of our colleagues in Caterpillar, and also hope that we can carry out some in-depth cooperation in this field in the future. ”

"Multi-axis high-speed machining?" The Americans were all slightly stunned, and the expressions on their faces stiffened a little. They know that the Chinese have been trying to get this technology, but the more this happens, the more the United States will naturally strengthen the embargo against China. This kind of processing equipment can be used for the processing of key components in some cutting-edge products for national defense, and it can be said that it can directly form combat effectiveness. Scott and others have always believed that the Chinese are at best just starting in this field, but listening to Song Dingxiang's tone, it seems that they have made some obvious progress in this area, and they can actually talk about asking Carter to guide.

Everyone walked into the laboratory with a suspicious mentality, and the chief engineer Hu Jin greeted him and began to introduce everyone on behalf of Song Dingxiang: "Everyone, please see, this is our linear motor test bench, and the feed rate we are currently testing is 50 meters per minute, and the future goal is 70 meters per minute." Here is the high-speed tooling system test, we refer to the HQK system, WM system and N65 system, and propose our own set of tooling system, using the combined structure of tapered sleeve disc spring, which can compensate for radial clearance through axial displacement・・・・・・"

Perhaps because of the visits, only the engineers who introduced the situation were left in the lab, and the others avoided them, so the visitors to Carter could not see the details of the experiment. However, they can see from the various devices on the table that the Chinese are indeed engaged in these things. ..., after asking for permission, the American named Kevin removed a milling cutter from the cutter system. He carefully examined the handle of the knife and found that the wear on the handle was very noticeable, apparently the result of numerous experiments.

"Mr. Scott, I heard that you are an expert in the practice of tool-passing strategies, and we are now doing research on the tool-passing strategy under high-speed cutting conditions, are you interested in seeing the phased results of our research?" Huzin asked Scott.

Scott smirked: "Of course I'm interested, I think what my Chinese counterparts have made must be very interesting." ”

Hu Jin took out a book of experimental materials from the bookshelf, handed it to Scott, and said, "Look, this is the result of our simulations in the past few months, I think, compared to Carter's technology, it must be very naïve, right?" ”

"Where, where, I have always admired the wisdom of the Chinese." Scott said politely as he took the information. He opened the information, glanced at it roughly, and couldn't help but be secretly shocked in his heart: Isn't this the circumcision method of the Carter Company as an unannounced secret? How did the Chinese also master it?

"Well, Mr. Scott, what do you think is wrong with our approach to the strategy of moving the knife?" Hu Jin asked with an attitude of humbly seeking advice.

The pass strategy is a key technology in high-speed machining, and how to simplify the travel path of the tool, reduce the turning points, and keep the path as smooth as possible is an important factor in determining the cutting efficiency. For example, for high-speed cutting of large and complex surfaces, if the curvature of the surface changes greatly, the direction of the pass should be the direction of the maximum radius of curvature. Conversely, if the curvature of the surface changes slightly, the path with the longest average length of a single path should be selected.

These principles are simple to say, but to be implemented, it involves a large number of calculations and experiments, on the basis of operations and experiments, you can refine some specific models, which belongs to the knowledge formed by enterprises. In the information that Hu Jin gave to Scott, it can be clearly seen that the Chinese have mastered a considerable part of the knife strategy, especially the strategy of the ring cutting method, which is somewhat similar to a core technology of Carter's company.

Scott knew that to achieve this strategy of the ring cutting method, it must involve the mutual cooperation of multiple axes, and the Chinese were able to do the simulation of the ring cutting method, indicating that they had a deeper grasp of the technology of multi-axis linkage. This discovery shocked Scott.

"Mr. Hu, did you develop these strategies yourself?" Scott asked very impolitely, of course he could have said more tactfully, but in a hurry, he couldn't take care of it.

Hu Jin's face was clearly a little embarrassed, and he said: "Of course, of course, I made it up by us, and I don't know if it's right, we still want to hear your opinions." ”

Hu Jin's contrived actions were naturally designed for him by Lin Zhenhua, the director behind the scenes, and such an expression can make Americans confused, not knowing whether the Chinese have mastered these technologies themselves or indirectly obtained them through what channels.

This set of knife strategies was originally obtained by Yang Wenjun and Chen Ying from Miryang Company, and the CEO of Miryang Company had also worked in Carter Company in the past, and he had some technical affinity, so it was normal for Scott to look familiar.

If he asks a few more words, he should be able to find that the Chinese still only know a little about this set of technology, and lack sufficient experimental data to support it. Hu Jin pretended to have this expression, just to deal with Scott's questioning, I already looked embarrassed, if you continue to ask, can I refuse to answer? "It's not easy for you to do this without any outside help. Scott calmed down and began to conclude, "However, there is a relatively large directional problem in your current research, and if you go in this direction, you may not get the results you want." ”

"This ・・・・・・" Song Dingxiang seemed to be a little anxious, "Mr. Scott, are you sure that there is a problem with our direction?" If there is a problem, we have to adjust. By the way, could you stay in China for a few more days and give us some guidance? ”

Hu Jin showed some skeptical looks and said: "Mr. Scott, the technology in the world is not exactly the same, maybe we are not the same as Carter, you can't say that we are not right to do this, right?" ”

This is the difference between an official who is concerned with the goal being accomplished, while an engineer is more concerned with whether his work is recognized. Scott felt that he had figured out the thoughts of the Chinese, he smiled reservedly, and said: "What Mr. Hu said, maybe there is some truth, I think, Mr. Song can continue to trust Mr. Hu, maybe the direction he chooses now can indeed make something interesting." ”

"It's not a question of who to trust." Song Dingxiang took Scottra aside, lowered his voice and said to him, "Mr. Scott, you know, we are not a pure scientific research institution, and we are not interested in academic issues. For us, the key is to get the equipment we need on time and on the right texture. Mr. Scott, do you really think there's something wrong with the direction they are doing? ”

"Mr. Song, this is just my family's words." Scott said.

"We have a lot of faith in the Carter Company." "If Mr. Scott can produce solid evidence, we can get our engineers to change the current direction." However, this may require some guidance from Mr. Scott. ”

Scott waved his hand and said, "Mr. Song, if you just need some machining centers, we at Carter can provide them to you from the perspective of cooperation." However, we can't do technical guidance, after all, each company has its own technical secrets. "Min