Cheng Changlin is a graduate of mechanical engineering, has been engaged in technical work in the Red Star Gear Factory for more than 10 years, although his mechanical technology has been somewhat unable to keep up with the changes of the times, but still has a good attainment, all the machine tools and equipment in the factory are well understood, and the technology is also very thorough.

In the last factory-wide technical transformation competition, although the machine tool he helped Tian Feng to operate was unfortunately defeated by Duan Yun's modification plan, it was indeed faster than Duan Yun's lathe in terms of processing speed.

Hearing that Duan Yun was going to convert the milling machine into a gear hobbing machine, the first reaction in Cheng Changlin's mind was: absolutely impossible!

You know, the milling machine and the gear hobbing machine are completely two different equipment, there may be parts that can be shared, but the processing principle is very different, if you really want to modify, it will be very difficult, almost to change the entire machine design and layout!

"Yes. Duan Yun nodded, and then said: "Most of the workpieces have been processed, today I and a few masters of the maintenance team in the first workshop have been busy for a day, the mechanical workpieces have been basically modified, tomorrow, we will start to add motors and control circuits." ”

"You haven't told me about this, have you?" Cheng Changlin frowned and said, "In case the equipment in the factory is damaged......

"I told Qingyan ......," Duan Yun said.

"Ah, Duan Yun told me about modifying the milling machine, but I didn't expect him to ...... so soon"

Duan Yun did tell Cheng Qingyan about this before, but Cheng Qingyan didn't take it to heart at that time, because in her opinion, such a big modification would take a long time to design and prepare, but what she didn't know was that Duan Yun already had a design plan before he entered the technical department.

"In addition, when I returned to the factory the day before yesterday, the factory director talked to me, and I also told him about the modification of the gear hobbing machine, and he said that he would fully support me. Duan Yun added.

"Eh, that's it......" Cheng Changlin heard this, and his face softened.

Qin Gang's recent change of attitude towards Duan Yun, Cheng Changlin can see it, now that the factory is in a meeting, Qin Gang always has to praise Duan Yun a few words, and also encourages the young workers of the whole factory to learn from Duan Yun.

Qin Gang's 180-degree change in attitude towards Duan Yun made Cheng Changlin feel a little incredible, he started with technology, and he was far less sensitive to political matters than Qin Gang and Zhao Dongsheng, so he never thought of the trick.

But in any case, since the factory director has already expressed his support for Duan Yun's modification, then Cheng Changlin has nothing to say, after all, Qin Gang is the number one in the factory, and he has the right to let Duan Yun do this.

"I'm going to install the circuit tomorrow, and in about two or three days, I'll be able to test it. Duan Yun said.

"So fast!?" Cheng Changlin said with some surprise.

In fact, Cheng Changlin didn't want to talk to Duan Yun, but when it came to technical aspects, he talked more.

In his opinion, even if there is no problem with the technical solution, it is unbelievable that Duan Yun completed the modification of the gear hobbing machine in such a short time.

"If you can get some guidance from Uncle Cheng in this modification......," Duan Yun said to Cheng Changlin in a sincere tone.

"Forget it. Cheng Changlin interrupted Duan Yun's words and said disdainfully: "I don't have as much ability as you!"

"Lao Cheng, it's a good thing that people want to carry out technical transformation in the factory, you can also help him, usually Xiaoduan picks up our daughter every day, and it is very hard to say that you are also his leader, and it is also good for you to help him. Yang Xiufang, who was on the side, persuaded her husband.

"Don't interject as a layman!" Cheng Changlin's face flashed with a touch of displeasure, and said: "The milling machine is converted into a gear hobbing machine? What are you kidding! That's not a type of machine at all! How to change it? The previous automatic modification of the lathe was at least based on the same processing principle, but the working principle of the milling machine and the gear hobbing machine are different! There are also some technical things that I said you don't understand, if you want me to say, don't do this kind of technical transformation that sounds unreliable! Wasting artificial materials and ruining machines are all the assets of the state, and someone will be responsible for the accident! How can I follow to do such a stupid thing if I do such a dangerous thing as soon as my mind is hot!"

Cheng Changlin obviously thought that it was impossible for Duan Yun to really modify the gear hobbing machine.

In his opinion, Duan Yun was completely carried away by the success of the previous lathe technical transformation, and he was bent on making a bigger trick to get the attention and promotion of the factory, and he was utilitarian, but he didn't consider the consequences at all.

In fact, Cheng Changlin was right, Duan Yun's technical transformation did have a strong utilitarian sense this time, and he really wanted to rely on this project to get promoted, but what Cheng Changlin didn't expect was that Duan Yun's modification plan was completely mature and feasible, and it was borrowed from a technical article in China in the late nineties.

"Dad, Duan Yun is not easy for him, not to mention that he is your subordinate, if you ask to help him, in case this modification is successful......" Cheng Qingyan on the side also persuaded.

"I'm also doing this for his good! As soon as he was promoted to become a technician, he should accumulate experience in his work in a down-to-earth manner, read more books, and practice more! What people who engage in technology are most afraid of is to rush for quick success and quick profit! Thinking about flying before his wings are hard, this style will make him suffer a big loss sooner or later!" Cheng Changlin glanced at Duan Yun, and then said: " If the milling machine really wants to be changed to a gear hobbing machine, it is impossible to change a few parts to get it, it is necessary to repeatedly carry out functional tests for a long time, and now he told me that the modification can be completed in two or three days, which is a big joke!"

"Lao Cheng, what you said is too ......" Yang Xiufang's willow eyebrows frowned slightly, obviously feeling that her husband's words were a little inappropriate.

"Uncle Cheng is right, it is indeed difficult to convert the milling machine into a gear hobbing machine with CNC function, and it took a lot of time when I designed the technical transformation plan before......" Duan Yun behaved very calmly, and didn't seem to care about Cheng Changlin's attitude towards him.

"What are you talking about? Do you still want to convert it into a CNC gear hobbing machine!?" Cheng Changlin asked in surprise when he heard this.

"In fact, it is not a real CNC gear hobbing machine, but it has some CNC functions, and I can further ......improve this machine if there are conditions in the later stage," Duan Yun Zhengse said.

"Do you know what a CNC gear hobbing machine is? We don't have a few of those things in the country! Just because you are a little technician still want to make it, you don't know how thick the sky is!" Cheng Changlin was almost stunned by Duan Yun's 'arrogance', and after a while, he patted the table and said to Duan Yun: "I will put the words here for you today, if you can really make this kind of gear hobbing machine with CNC function, I will give you the position of the chief engineer in the future!"