Duan Yun really likes this kind of sidecar motorcycle, and when he saw someone riding on the street when he was a child, he was also full of envy.

Before the 80s, this kind of three-wheeled sidecar motorcycle was only equipped with military and police units, and only genuine military communications troops and police stations could use it.

It was not until the early eighties that the state liberalized the civilian sale of such sidecar motorcycles, but the number was very small, and even in large cities like this, it was basically not seen.

After the sidecar motorcycle was opened to civilian use, some military and police units could only be used as scrap metal to dispose of the eliminated nephews but had the opportunity to 'exert their residual heat', and many second-hand nephews became the cars of many wealthy people at that time by depreciation and sale.

But in general, this kind of sidecar motorcycle is more fuel-intensive and relatively troublesome to maintain, so by the mid-nineties, it gradually disappeared from the street.

The reason why Duan Yun bought two cars in one go this time was that in addition to liking the domineering shape of this motorcycle, the most important thing was that he wanted to buy them to come in handy.

Nowadays, Duan Yun has a lot of antenna sales outlets in the surrounding industrial and mining plants, and it takes more than an hour to ride a bicycle from the farthest meat factory and the 3528 chemical plant, and it takes at least three hours to go back and forth plus door-to-door maintenance, which is a big test for the physical strength of the young workers.

In addition, if there is more business to install in the future, the installation of more than a dozen or even more antennas a day, how to bring so many antennas over is a big problem, an antenna weighs a few pounds in time, and more than a dozen or twenty will reach hundreds of pounds, and it is indeed very hard to ride so far with so many things.

And with the sidecar motorcycle, things will become a lot easier, save trouble and effort, although it is said that some fuel is expensive, but the time saved to earn money is enough to fill the consumption of fuel money, so this business is cost-effective no matter how you calculate.

Duan Yun's only concern was that he didn't know the degree of depreciation of this second-hand nephew yet, but with Duan Yun's mechanical attainments, he could completely repair and transform it by himself.

However, at present, Duan Yun doesn't know if these bell bottoms can help him get this kind of second-hand nephew, and he will not have news until the weekend.

......

On the night shift at night, Duan Yun did not go directly to the dispatch room to sleep as usual, but continued to study the plan of modifying the gear hobbing machine with a milling machine in the workshop.

Zhao Dongsheng had already reminded him in a conversation with him a few days ago that if he wants to take a higher position in the factory in the future, he must have important technological transformation technology.

In fact, there is no need for Zhao Dongsheng to say, Duan Yun also knows this, so he has begun to study the technology of modifying gear hobbing machines with milling machines a long time ago.

If this technical transformation can be successful, it will undoubtedly be a very important thing for the Red Star Gear Factory, which can not only greatly improve the processing efficiency of the gear, but also improve the machining accuracy of the gear, so that the factory currently produces six or seven agricultural gear products, and leap to the processing accuracy of the fifth grade of automobile engine gear, which is definitely an epoch-making progress for the Red Star Gear Factory.

Although in the previous life, Duan Yun had seen the precedent of modifying the gear hobbing machine with a milling machine in China in the nineties, and also roughly understood the modification ideas in this regard, but in fact, because there are many differences between the milling machine and the gear hobbing machine in the structure, this kind of technical transformation is still very difficult, compared with the automatic modification of the lathe, the difficulty is more than one step higher.

In fact, Duan Yun can now make a simple copycat version of the gear hobbing machine.

The principle of this so-called cottage simple version of the modified gear hobbing machine is actually to use the X-axis of the milling machine itself to drive the universal indexing head to rotate automatically, so that the work of the rotating indexing head that should be completed by the operator is automatically completed by the machine, so that the operation of the entire milling gear is fully mechanized, and the efficiency is naturally improved.

However, although this simple modification can improve the efficiency of processing gears, in fact, the efficiency of the improvement is very limited, and the machining accuracy cannot be improved.

Duan Yun's milling machine modification gear hobbing machine, not only to greatly improve the processing efficiency of gears, but also to improve the machining accuracy of gears, in addition to the ability to process complex gears, only such modification technology, can be called a truly successful technical transformation, and only such a modification program, in order to become Duan Yun's future hands of the 'king bomb' hole card, is his future in the factory based on the biggest capital for promotion!

Duan Yun set a very big goal for this technical transformation, and correspondingly, the difficulty of completing this technical transformation is also very high, so far, Duan Yun has not completely completed this technical transformation plan, but fortunately, he now has enough time to study it slowly, and he can make this technical transformation plan very detailed and perfect.

Since Duan Yun is not a specialized technician, he can't get the drawings of the equipment, so he can only measure the size of the workpiece of the equipment by himself, and then record and draw it by hand.

"Busy?" Just as Duan Yun was recording the data of the workpiece that had just been measured, a voice came from behind him.

"It turned out to be squad leader Huang. After Duan Yun turned his head and saw that it was Huang Haitao, he asked with a smile, "Is there something wrong?"

"Go to the door and say. Huang Haitao pointed to the door of the workshop.

Then, Duan Yun put away the pen and notebook, got up and followed Huang Haitao to the door of the workshop.

"What the hell is going on?" asked after leaving the workshop, Duan Yun took out a cigarette and handed it to Huang Haitao.

"I heard something about you today...... Huang Haitao lit a cigarette, took a puff and said: "Yesterday morning, the factory meeting was held, and the secretary proposed to transfer you to the technical department ......"

"Uh. Duan Yun was stunned when he heard this, although he had long known that the secretary would help him solve the things that the workers did, but he was still a little excited.

"It's a pity that this matter was vetoed by Director Qin and Chief Engineer Cheng, saying that although you have a little skill, your education level is too low, and you haven't even gone to high school, so you are not qualified to enter the technical ......department," Huang Haitao sighed and said.

"Hmm. Duan Yun frowned when he heard this, but he was quickly relieved.

In fact, he had long expected such a result, although he had successfully completed the technical transformation program twice before, whether it was the contribution to the factory or the technical level, it was obvious to all, but his education has always been a hard injury, especially in the system of state-owned enterprises, as long as the factory director Qin Gang insists on taking the academic card, then the other leaders of the factory have nothing to say, after all, state-owned enterprises have a lot of rules and regulations in promoting cadres, and they are also very strict。