"Dongfeng Missile faced many problems when processing many parts, especially the processing accuracy of core parts. Later, our country held a national technician competition, and veteran technicians from several northeastern military factories came out on top. Then the state gathers these people together!"
"Of course, the competition back then was not limited to equipment, but also included welding, casting, and sheet metal forming... Several old mechanics from our school had participated in that competition!"
"Later, with the gradual iteration of imported equipment and changes in some factories, these skilled workers gradually spread to all parts of the country! You kid is definitely not simple, you can actually find one!"
Talking about that period of history, Li Dongzhen knew all his family treasures. Ji Donglai apologized and became curious about Li Dongzhen's identity at the same time, especially when the other party was so straight.
"Dang Dang!"
"Damn it, Ji Donglai, you have found a treasure. Let me tell you, this old technician is worth at least a villa, the kind in the core area of Hangzhou!"
When Li Dongzhen was shocked, the old mechanic finished grinding his tools, just when the other party thought that the old mechanic would start working.
The other party directly opened the gear box of the machine tool, asked the worker to give him the wrench, and then started to replace the gear. Apart from anything else, most lathes in the country cannot do this skill alone.
Today's lathes are already very popular in being able to process parts. They can really freely match gearboxes according to the requirements of the parts. This is very rare in the country, or it can be said to be almost non-existent.
Why is the lathe the boss in lathe pliers washing and planing?
Because old car workers can not only drive, but also repair and even assemble cars. qδ
After using the lathe for a period of time, you can remove the gears and replace them. Freely assigning the reduction ratio is something that even many new engineers cannot do, let alone a small lathe.
"Tch, why is your villa so valuable? I won't exchange for the eight villas. Let me tell you. The house I bought in the community over there is just for them to live in. They are provided with good wine and food every day! To tell you the truth, even my relatives Dad and I have never served you like this!"
It was also the first time that Ji Donglai saw the old technician freely assembling a lathe. Ji Donglai soon calmed down, and the respect on his face was gone, replaced by calmness.
Li Dongzhen looked at Ji Donglai, with a rare look of shock in his eyes.
It was the first time that Li Dongzhen had met a young man who valued technology so much before he graduated, and he was just a freshman. He could tell that the teacher sent him definitely had something, and he could really understand it.
"Swish!"
After the gear replacement was completed, the old technician wiped his hands, then began to wipe the guide rails of the machine tool, and dripped a little oil on the screw.
"Buzz..."
When I started the lathe again, the sound of the machine was different. The speed of the machine was obviously different from the original one. The old mechanic knocked the chuck, and after the alignment was completed, he began to clamp the workpiece.
After cleaning up this side, I rubbed the turning tool on the sandpaper again. After everything was done, the other party started driving again.
"Buzz..."
"Tsk, tsk, he is definitely an expert! I have some drawings from Donglai. You can process them for me. It's not difficult! For the joints, I'll take them back and match them to other sizes!"
Watching the old mechanic start to slowly push the tool holder forward, Li Dongzhen nodded, took out his notebook, and drew a sketch on it, which was a concave circle.
The surface roughness is 0.4, the dimensional accuracy is three decimal places, and the material is 42CrMo.
"Three thousand and five per piece, friendly price!"
"make a deal!"
They were all experts, and there was no bargaining at all about exchanging parts. Li Dongzhen took the money, and Ji Donglai asked Cui Mingyan to come down and enter the account. Then he went upstairs to draw a picture and place an order. When Ji Donglai came down again, the old technician held the The concave circle has been off the plane.
"Master, do you need to dig a hole in the center of the circle? After all, it's not easy to get there!"
Holding the concave circle in his hand, Li Dongzhen looked carefully. Although he could not see the processing deviation of the ball center, based on his experience, Li Dongzhen was still worried.
"No, I'll practice
It has been decades, and I have been practicing the center position alone for two years! Ball knives have point contact, now they are called R knives! This knife is made of tungsten steel, and the wear is not that serious. Normally, there is one knife per joint. You are using it on the balancer, right? "
The old mechanic lit a cigarette, waved his hands and went to work on other machine tools.
"How do you know?"
Hearing what the old technician said, Li Dongzhen's eyes were filled with shock. Thinking back to the four ball heads under the balancer, it seemed that the drawings were confidential.
"No need to be surprised, center drilling is the second level standard I set, because the machine tool you are introducing now is defective and can only be processed to that extent! There is my signature on the drawing. If nothing else, you can go back and find box No. 1. There are first-level blueprints in there, I guess you can’t process them yet!”
"You must have been young when we built the 620 old bed. Now basically not many people are willing to use that bed to do fine work because it requires higher skills from workers!"
"But no matter how precise the CNC machine tool is, no matter how precise the CNC system is, it is only a partial replacement of the human brain. Back then, Dalian Machine Tool, BJ Machine Tool, Shenyang Machine Tool, including Anyang Machine Tool, all came to me to test the machine! It's just a pity that I wasted my time. In terms of prison time and time, they still haven’t caught up with the foreigner’s system!”
"To put it bluntly, CNC machine tools draw dots and connect lines. The denser the points, the better the things you make. If you don't believe me, you can look closely at the things processed by CNC machine tools. They all have textures. They must be polished and ground later. Otherwise, it will be harder to use than ordinary machine tools. It’s still hard work, alas, I won’t tell you the history, it’s all in the past..."
While talking, the master picked up the enamel jar, opened the lid, shook the tea leaves inside and took a few sips. The image of the great man on it was still clearly visible, with only slight discoloration on the surface, but no paint was lost.
The words "Worker's Glory" appear in an arc around the image. He puffs on the black cigarette in his hand. The old man's face is full of longing and memories of that era.
"I really didn't expect that I could see our older generation of masters here. Let's go out for a drink..."
"Forget it, we only drink with a few old buddies now, and no one else drinks! You can drink with our boss, you are old and nagging about age. The next shift is for another of our colleagues, excuse me!"
Shaking the teapot in his hand at Li Dongzhen, and then saying hello to Ji Donglai, the master turned around and left gracefully, without any sloppiness.
Ji Donglai hurriedly waved to the other party without any intention of stopping him.
Ji Donglai is used to not working overtime, not working early, working on time, not procrastinating at all when doing work, and not doing anything that shouldn't be done.
