Chapter 180

Technological process is not only related to product quality, but also related to product processing efficiency.

Especially for the processing of some complex products, the process flow is particularly important. What kind of process is arranged in the front and what kind of process is arranged in the back must be strictly and reasonably designed.

The process engineer of complex high-precision and cutting-edge products must have rich processing experience in the workshop and rich theoretical experience. With rich theoretical experience and no practical operation experience, you can't be competent for the position of an excellent process engineer.

In Yunfei's world, Yunfei once heard a story, that is, a real thing happened to the space system where the plant is almost built, but the relocation has not yet started. In the late 1990s, when those old engineers and technicians were about to retire, in order to improve their scientific research ability and processing ability, the aerospace system set up a number of top doctoral students from key universities in the national network.

Those top-notch people are the real pride of heaven. One or two are incomparable. Speaking of the new technology in foreign countries, although they have not seen it with their own eyes, they also understand it very thoroughly. In particular, they believe that they, who have learned from books, are fully competent for the technical work of product design and process design.

As soon as several old engineers in charge of technology have just retired, those doctors who think they are far more powerful than those old engineers who graduated from technical school or high school have strongly changed the technology that has been used for decades and implemented it in the whole factory.

Of course, the implementation of the new process can only be implemented with the consent of the factory leaders. The graduate students took out the theoretical knowledge they had learned all their life, took turns and fooled the leaders.

In theory, there will be no problems with the products and production processes designed by college students. In particular, their newly designed processes can improve the efficiency by 15% compared with the previous production processes, and the quality control is easier. However, in many companies, the implementation of new processes does not require the approval of leaders, because process engineers represent the highest technical level of a factory.

But I didn't expect that when most of the products were processed to the final process, everyone was stupid. The new process that has no problem in theory is found by those workers in the final finishing. They can't do what can be realized in theory.

For once, cloud's non current neighbors lost hundreds of millions of yuan! Moreover, the intangible loss is far more than that. At that time, the products were military products exported to foreign countries. According to the original delivery date, when the other party had to accept the products, it was found that many products were still in rough state!

In this way, the largest enterprise in the economic development zone at that time began to decline. Finally, in the early 20th century, many affected factories went bankrupt, leaving only a few military production workshops, which slowly recovered when Yunfei left.

"Why should the process arrangement be on the finishing of the grinder and work on your lathe process?" Yun Fei asked the 40 year old lathe worker with a gloomy face.

Originally in the inspection room, I saw that the lathe worker quarreled with the manager of the quality department transferred back from the Pearl River Delta by the boss. It was originally the young female inspectors left by factory 9327. They knew that these old workers were masters and were dissatisfied. They beat their new boss at that time. It made a big deal. Under the eyes of the leader of the finished product inspection team, She went to the workshop director of the finishing workshop to save the field.

"Director Fang, please hurry up. Chen Shigang quarreled with manager Cheng just in case they got into a fight..." the young female inspector quickly walked towards the finished product inspection room and turned around to urge Fang Qiang, who was also promoted from the master of the workshop.

"Why on earth did they quarrel?" Although Fang Qiang, the workshop director, is very popular among the workers, he does not have much prestige. Originally, the vast majority of skilled workers in 9327 machining workshop stayed. Although he is first-class in technology and rich in experience, this is only one of the most skilled and experienced technicians in the whole workshop.

The rest of the people will not be convinced that he has become the workshop director.

Especially those guys at his level.

"Mr. Chen turned the finish machining that should have been processed by the grinder directly to the size." The young inspector walked forward quickly and explained to Fang Qiang behind him.

The office of the workshop director is not a small distance from the inspection room. You know, the whole workshop is hundreds of meters long. The office of the workshop director and the finished product inspection room are just at both ends of the workshop.

Hearing the young man's words, Fang Qiang understood what happened.

He has worked in the workshop for decades and has a thorough understanding of the workers with good skills. Especially now, the bonus of the whole Jiuyi heavy industry is constant based on output.

Although the lathe process has a large processing volume and many working hours, the grinding process has less allowance and high working hours for lathe processing. Especially in batch processing, these processes of step-by-step processing can achieve the machining accuracy of the grinder as long as the car is aligned and directly turned in the past. Even if the surface roughness cannot be compared with the grinder, it can meet the requirements as long as it is polished with sandpaper.

Fang Qiang quickened his pace. Just outside the laboratory, he heard Yunfei's cold voice.

"Come on, who arranged it for you? Who arranged the turning process of the dry grinder? " Yunfei saw the forty year old lathe worker in front of him, glancing his head aside defiantly. The anger that had been suppressed in his heart was on the edge of revenge.

The reason why Yunfei is so angry that workers do not process according to the process requirements is not that he does not believe in the workers' technology, but that he does the final precision machining process on the lathe, which is too much to test the technology and experience of the workers operating the lathe.

For the large pallet in the Z direction (longitudinal) on the lathe, turning a small grid is one millimeter; In the X direction (transverse) middle support plate, rotate one grid, and the tool tip moves 5 wires (0.05mm. For small lathes, such as 6132 machine tool, rotate a small grid, and the tool tip moves 0.02mm). In diameter processing, it is 0.1mm, because the workpiece on the lathe rotates, the tool moves 1mm, and two millimeters will be cut off from the diameter of the part.

The grinder is different. The grinder belongs to precision processing equipment. The grade of machine tool alone is one grade higher than that of ordinary processing lathe. For the scale on the grinder, for each small grid, the feed is only 0.001 mm, that is, only one μ。

If workers want to process the precision dimension with less than a trace of tolerance range on the lathe, they must divide a grid into ten equal points or even one hundred equal points based on their own experience for the final finishing feed. As long as there is a slight deviation, the dimension of the parts will be out of tolerance. This problem does not exist in grinding machines. How many times μ The error range is within the processing range of the equipment itself. As long as the measurement is accurate, how much difference is there and how many grids are directly entered, there will be no problem at all.

The biggest problem of grinding machine processing is that the grinding wheel wear causes the processing size to be too large. At that time, it can be guaranteed by making up the bad error.

"Fang Qiang, how did you become the workshop director? I asked you to be the workshop director and manage the site of the whole factory. That's how you are? " Seeing Fang Qiang coming in, Yunfei's pent up anger finally broke out.

It's a lie to say that the workshop director doesn't know the working procedure of the lathe worker's dry grinder.

"..." Fang Qiang was so depressed that he couldn't even say a word about the strong young boss.

"Did you, the workshop director, arrange it for him, or did their team leader arrange it for him? At the weekly production meeting, the production department emphasizes that the process flow must be strictly followed. Is that how your precision machining workshop implements the process flow? A spindle plus materials and labor costs hundreds of dollars. It is scrapped in the last process. What's the use of your workshop director? " Yun Fei didn't pay much attention to the lathe worker who caused this incident, but was angry with their leader directly.

A workshop director is related to the production of the whole production workshop. Now it is the best embodiment.

"Chen Dongsheng, didn't I tell you to strictly follow the process route?" Fang Qiang can only endure Yun Fei's anger. Shortly after the factory was started, there were several quality accidents in his precision machining workshop. Otherwise, the young quality manager who didn't step on the site would not stay in their precision machining workshop every day.

"I've done so much in front of me, haven't there been any problems? A horse stumbles and a man misses. Who can guarantee that he will never make mistakes in his work? I'll pay attention next time. As for? " When Chen Dongsheng heard Fang Qiang's question, he was very unhappy.

He is no worse than Fang Qiang in technology. In the end, he is only the monitor of the lathe class, and Fang Qiang, who is not a few years older than himself, has become the workshop director. Not only does he not work, but his salary is more than half higher than himself.

"That's what you did before?" When Yunfei heard Chen Dongsheng's words, he almost squeezed them out with his teeth.

Hearing Yunfei's words and looking at Yunfei's expression, Fang Qiang quickly winked at Chen Dongsheng and told him not to talk nonsense.

"Yes, anyway, the grinder can't finish. What's the matter with me?" Chen Dongsheng ignored Fang Qiang's eyes and said to Yun Fei with his head raised.

Yun Fei, a young man, has only made some money by taking shit luck. In front of his teacher, he is just a paper tiger. Anyway, these workers are only workers of factory 9327, not those of Yunfei 91 heavy industry. Yun Fei, the boss, doesn't even have the right to deal with himself.

"You mean you helped me, you scrapped the product, and I have to thank you, don't you?" Yun Fei smiled. He was angry.