Siheyuan: Starting from a fitter

Chapter 15 God-level scraping
After returning home, I took out two steamed buns from the secret place. I heated them up as usual and ate them with pickles. I drank a large vat of warm water. I was thinking about the machine tools today and didn’t bother to drink water. I went home. I only feel thirsty when I eat.

Take out the file bag, because it is an ordinary document without a seal, otherwise it would not be so easy to get, let alone take it home, bypass the buckle, take out all the information, part of it is the maintenance record, the record is detailed: workshop number , repairer, repair time, what is the fault, who is the repairer, process, result, inspection signature, confirmation signature.

I heard from the master that there were almost no records in the factory in the past, and maintenance was very haphazard. Things like missing screws and missing sealing strips occurred frequently. Various tricks were used with average results.Later, when the big brother of the Soviet Union supported technology, he also brought these requirements. Although he resisted in his heart, once the order was issued, all were implemented.The benefits have gradually emerged. Things have been done more standardizedly. There are fewer sloppy operations during maintenance. There is also a basis for judging the wrangling of all parties. Now leaders at all levels are willing to strictly implement it.

After briefly reading the maintenance records, I understood the various failures of this machine tool in recent years. Most of them were the replacement of worn parts, but there was nothing that could be done about the guide rails. It was recommended many times to purchase new guide rails. The 30-year-old items have arrived. Where to buy.

Just as he was about to read the structural drawings hand-painted by the technician, he heard a knock on the door.

When she opened the door, she saw Widow Qin.

"Guocheng, I've eaten." Seeing the information on the table, "Hey! I'm studying." Widow Qin turned around and came into the room familiarly. people.

"Sister Qin, it's so late, what can you do?" Li Guocheng reminded Widow Qin that it was too late and she should pay attention to the impact.

"I just finished serving a whole family. I came here to see if there is anyone I can help with." After saying that, she raised her eyebrows very naturally. She said that although Widow Qin is in her 30s, she has great talent. People, charm, and charm are revealed inadvertently, which is really hard for gentlemen to deal with.

As a soul from later generations, loving cleanliness is a personal habit, and it is very difficult to accept the sloppiness of the original owner.

"Thank you, Sister Qin. My family is very poor and we don't have much to pack, so I just picked it up with my help."

"Okay, Guocheng, your newly painted house is really bright. Tomorrow our house will be tidied up like yours." Widow Qin chuckled and turned into the bedroom.

"This bedroom is so tidy, I didn't expect you, a grown man, to be very good at cleaning it up," Widow Qin complained and praised.

Li Guocheng didn't dare to follow him. There were no bookcases and the whole room was very transparent. It wouldn't be rude not to follow.Li Guocheng deliberately stood near the window in the living room. Under the light from behind, it was very easy to see Li Guocheng's actions clearly from the outside. He had to guard against the melons and plums in the fields.

Widow Qin turned around and came out, each time as naturally as if she had been tempered a lot, and the rippling made people dizzy.But to Li Guocheng, these were all small tricks and he dismissed them.

"You are not the youngest, and you don't have anyone to love you. How about I introduce you to someone? My cousin is about the same age as you. She should have good looks and a good body. She has inherited from our old Qin family and is good at having children." Widow Qin Helpless, the boy from the Li family's house is too clean, so the same method used to deal with Silly Zhu is ineffective here.If one plan fails, another plan will be made. Introducing the target will be beneficial to oneself regardless of whether it succeeds or not. This is how the friendship is deepened through mutual help.

Li Guocheng knew that Widow Qin was probably talking about Qin Jingru. After watching the TV series, she was indeed beautiful, but her eye sockets were shallow. She did not inherit the shrewdness of the old Qin family, and she was so naive that she was easily ruined by Xu Damao. If not for Widow Qin's shrewdness, she would not have married Qin Jingru. ,

"Sister Qin, my family is poor and white, what do I get married with, and I am still an apprentice, and I don't have the capital to find a wife. It is enough to support myself now, but I don't dare to bully others." Li Guocheng politely refused. The Qin family and the sisters are not themselves. The dishes, one is shrewd, the other is screwy, any one of them is enough to make people drink a pot.Coupled with the silly Zhu who is eyeing him like a tiger, he will never even think about living a good life in the future.

"You're still being polite to me, so it's settled, I'll bring you here in the next year." Seeing that there was nothing to argue about, without waiting for rejection, he turned and left.

"Hey, Sister Qin..." Seeing Widow Qin leaving quickly, Li Guocheng had no choice but to give up calling.

Widow Qin thought as she walked, the heat is not enough, she needs to be warmed up slowly, she must take out an iron rod and grind it into a needle, no matter what, a good relationship with a young, single and lonely guy can help her family to some extent .I don't know what came to mind,
After sending Widow Qin away, she turned to studying the information.

The drawings are not detailed enough, there are no general assembly drawings, only surveying drawings of some parts. It seems that the factory still does not pay enough attention to the old machine tools and does not take the time to complete the surveying and mapping.Of course, I also understand that this model is only a few sporadic units, it is too old and is not the main model of the factory.

After reading all the information, reorganize, classify and construct it in your mind, extract what you need, observe carefully, and slowly have ideas for the next step of work in your mind.

After a night of silence, I went to work the next day, completed my daily tasks, and once again went into the utility room.

According to the structural diagram in my mind and compared with the real thing, I dismantled the running parts one by one, and simultaneously corrected the structural assembly diagram in my mind. After an hour, the longitudinal guide rail was completely exposed. Use a silk cotton ball to wipe off the oil stains on it. The potholes and scratches visible to the naked eye remember the traces of time.

I groped the surface with my hands, feeling the pits and scratches everywhere, and used my mind to construct the floor plan of the guide rail inch by inch. It didn't take long to realize that the whole thing needed to be scraped by 3 millimeters.

He took out a large file from the tool box and cut it down to about 2 millimeters. In this way, Li Guocheng "roughly and violently" scratched the guide rail.If others saw it, they would think he was crazy. On the guide rails with strict precision requirements, he used a large file directly without drawing lines or measuring with a level. He just forced it on.

Generally, fitters above level 5 need to carefully survey and map, and then use a small file to file a little bit, and use various tools to measure from time to time. I am afraid that I will not pay attention to filing too much and ruin the guide rail. I can’t be too careful.

Li Guocheng put his heart and soul into it, and after about half an hour, he finally finished the rough machining.

Take out the scraper and start scraping.

Scraping refers to the bench work of using a scraper to scrape off trace amounts of metal on the surface of the processed workpiece to improve the surface shape accuracy and improve the contact between mating surfaces.Scraping is an important method for final finishing of various profiles (such as machine tool guide rail surfaces, connecting surfaces, bearing bushes, mating spherical surfaces, etc.) in mechanical licensing and repair.The real function of scraping is to improve the matching accuracy between matching parts and improve the oil storage conditions. During the scraping movement, the grinding and extrusion between the workpieces will increase the hardness of the workpiece surface to a certain extent. The small pits left on the surface of the workpiece after scraping will It can store oil, so that the mating workpiece has sufficient lubrication during reciprocating motion, and will not cause overheating and roughening.

At this time, Li Guocheng was even more focused. For the first time in half a year, he was sweating profusely. First, he was too focused, second, his mind power was consumed quickly, and third, he needed to maintain a posture when scraping, control the intensity well, and keep the same level of each action. The scratches should also be consistent. If you don't pay attention, you won't be able to see obvious scratches, because they are too coherent and create an illusion.

More than 2 hours later, I finally completed the last cut. I stood up and straightened my back, and moved my neck. It made a creaking sound. The same posture had been in the same position for too long. The input of brain power was a bit too much for even Li Guocheng's well-trained body.

Pick up the water glass, bang bang bang, dry it up, have a good amount of water, and give yourself a big thumbs up.

As I was admiring my works, I suddenly heard a rough shout: "Is there anyone there? I'm about to turn on the lights and close the door."

When Li Guocheng walked out of the utility room, he saw two people from the security department.

"We patrolled your workshop and saw lights. We thought everyone had forgotten to turn off the lights after get off work, so we came in to see if everything was okay, comrade."

"It's okay, I worked overtime late, I was too involved, I forgot the time, I packed up and left right away," Li Guocheng said apologetically.

Li Guocheng turned around and entered the utility room, and two team members from the security department followed in tacitly.

Looking at the parts and processing tools on the ground, the two looked at each other and said, "Hurry up, and remember to turn off the lights, electricity, and doors when you leave," the team member with the flashlight said, and then they turned around and left.

"Okay, it'll be ready soon. Sorry for bothering you two," Li Guocheng said politely. Watching the two of them leave, he immediately started to pack up, put away the tools, and put the parts away when they were disassembled. Turn off the lights and power in one set. , close the door' and leave the factory quickly.

After returning home, the same buns, the same recipe, after eating, wash up, and then go to sleep.

On the second day of the freshness test, the taste did not change at all and was still as fragrant.

Eating the same meal every day, the older generation of northerners should understand that southerners may not be able to bear it, and are more used to eating differently every day.

This is an era of scarce resources. The only winter vegetables are winter-stored Chinese cabbage, plus the cheapest pickle dumplings, which is delicious.I am thankful to God if I can have enough to eat. I would like to thank the Party and the new society from the bottom of my heart.

Li Guocheng has been eating meat buns for the past few days. One is cooked food, and the smell is not strong when heated. The other is that he leaves early and returns late every day. Everyone is not at the same point. Otherwise, if you try it, some uncles may hold an all-hands meeting to criticize you. , teach you how to live your life.Everyone will think that you can't live a good life if you only eat your food.

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(End of this chapter)