The heavy workshop of the first machine tool factory in Beijing is forging.

The six eighth-level technicians in the factory were all temporarily transferred by Director Shi Wenbo.

There are less than 5,000 people in the first factory in Beijing, and there are six eighth-level technicians, which makes Yang Weiping sigh deeply, no wonder the first factory in Beijing can make CNC machine tools, and the universal milling machine produced can also be exported to earn foreign exchange.

The eighth-level technician, this is definitely a rare talent of the national treasure, and he is a top technician who can manufacture aviation parts by hand!

After five consecutive days and five nights of continuous fighting, under the guidance of Yang Weiping, the chief engineer Lin Jianguang led the seven members of the technical innovation team to finally draw the design drawings.

In the past five days, everyone has eaten and lived at the technical leather site, and each person sleeps for less than three hours a day.

In the freezing cold, for the safety of every drawing, Yang Weiping even refused Shi Wenbo and Zhang Weimin's suggestion to prepare a few fires for everyone to keep warm.

F-4522 5-axis milling machine.

Servo motors, bearings, rolling balls, knives, dual-frequency laser interferometers and other accessories can be bought from Germany and Switzerland in the name of Worthen in the name of Mercedes' transformation of the Type 59 tank.

But the servo system, including the seven-degree numerical control system and program, had to be done by himself.

In addition, there are some Jingjing components, especially the guide rails and the spindle transmission system, which have to be machined by hand by these eight-pole technicians.

After the establishment of diplomatic relations between China and the United States on January 24 last year, the Batumi organization lifted 47 items in the list of embargoes against China, including 1 item in the "US Security List"1a.

After Chief No. 1 visited the United States, another 26 items were lifted.

In addition to the complete sets of machine tools and super machine tools, parts such as servos, bearings, balls, measuring instruments and other parts are no longer as blocked as before. A little bit of contact between Germany and Switzerland can get it all.

The F-4522 five-axis linkage milling machine can meet his design requirements, and he does not need to risk smuggling back complete sets of Jingmi machine tools and super Jingmi machine tools from abroad. Instead, it is possible to manufacture several seven-degree five-axis simultaneous turning and milling machining centers in small batches. It became the first generation of industrial machine tools of Huaxia Jingmi machine tools.

Jingyi Factory originally had rich experience in manufacturing three-degree five-axis linkage CNC gantry milling machines, and many of the equipment and materials for rough machining were ready-made.

F-4522 can pass the test at one time, and the high-density processing of each major component must meet the standard. Therefore, Yang Weiping did not let everyone do it immediately. Instead, two double-coordinate jingmi lathes were improved first.

The six eighth-level technicians were specially transferred for the improvement of these two Jingmi lathes.

When choosing the bed material for these two two-coordinate high-density CNC lathes, Director Yang Da made everyone thunder down.

He offered to use marble as the bed material.

At that time, there were two eighth-level old technicians in Yixu and Yizhuang who said that he was "playing the piano" and "pulling calves", which scared Director Shi and Secretary Zhang a lot. I am afraid that Director Yang will not be happy.

Of course, Director Yang will not care. Switzerland, Germany, the United States, and RI have long begun to study how to apply marble to the manufacturing industry. The domestic manufacturing industry is backward. The news is closed, and it will be a big fuss about it.

High-quality marble, which is an igneous rock formed after the lava has cooled. The term of deposit is as long as hundreds of millions of years. After hundreds of millions of years of sedimentation, its internal stress has been completely released, and it has a high degree of stability. Moreover, the compressive strength of marble is 250 to 260 megapascals, the elastic modulus is 130 to 150 GPA, and the hardness of Xiao style is hs65 to hs72, which is 2 to 3 times that of cast iron.

The coefficient of linear expansion of marble is minus 6 to the power of 4.61x10 per degree Celsius, which is only one-third to one-quarter of that of ordinary metals, and the coefficient of thermal conductivity and thermal expansion is very small. The internal damping coefficient is 15 times larger than that of steel, and the vibration absorption energy is excellent, which can effectively reduce the vibration caused by the operation of the motor.

Other than that. Marble has a small coefficient of friction and a smooth surface without stagnation, which is very suitable as a guide rail for machine tools. Marble is resistant to acids and alkalis. It will not rust, and the wear-resistant xing is also very good, which is ten times that of commonly used iron castings. There is no need for oil seals, no need to apply anti-rust grease, and general acid and alkali solutions will not cause damage to it.

What's more, marble is used in Jingmi machine tools, not afraid of damage, even if it is scratched or touched, it will not produce burrs, will not be deformed, almost does not affect the movement of Jing, and it is very convenient to repair.

Most importantly, it is easy to process and has a high yield rate. It does not need to be like metal parts, it needs to go through sanding, forging, heat treatment, as long as grinding and polishing, it can get more than the processing degree of metal parts, and the construction period is much shorter than ordinary metal parts.

The most important thing is that marble is cheaper, and the processing degree is twice that of metal parts, but the price is only half of that of metal parts, and it can be processed immediately and used immediately.

Six eighth-level technicians, seven members of the technical innovation team, plus chief engineer Lin Jianguang, and factory director Shi Wenbo, after listening to Yang Weiping say so many characteristics of marble, everyone was like puppets, all of them were dumbfounded.

They never thought that the marble, which looks ordinary, has so many excellent features, as if it exists as a special machine tool bed and guide rail components.

Meng Shouzheng, as one of Yang Weiping's personal bodyguards, saw that everyone was thundered by Director Yang, and raised a weakness in a very small voice, the marble was very brittle.

As a result, before Yang Weiping could explain, the eighth-level old technician surnamed Zhuang who first said that Director Yang was playing the piano indiscriminately rushed to solve Meng Shouzheng's doubts.

Because, this is a high-density CNC lathe, not an ordinary lathe.

Ordinary machine tools, the blank is processed into semi-finished products, and the tool cuts the blank, which will produce a great impact force, and marble is not resistant to impact, so it cannot be used as an ordinary machine tool.

The machine tool only needs to be processed for the initial processing, or even the parts processed by the machine, further fine processing, the cutting degree reaches the micron level, the impact force is minimal, and the marble parts will hardly cause damage. It is a natural Jingmi machine tool material!

For Director Yang's creative thinking, Lin Jianguang is now impressed by it.

The six eighth-level technicians who have never recognized cowardice in mechanical processing are also convinced by Director Yang. The old concept of looking down on young people has long been forgotten. In their words, from now on, what does Director Yang want them to do. They don't say more than half a word.

After solving the material of the machine bed, the next thing has to be simpler.

Of course, this is only a solid first step in the long march.

With the bed structure drawings designed by Yang Weiping himself, the marble was purchased. It takes at least three days to carry out rough processing and jing processing.

The F-4522 gantry milling machine took five days to determine the two marble bed bi-coordinate and dual-axis linkage CNC lathes. It also took two days. Two completely different types of advanced Jingmi machine tools, so that the senior engineers and senior technicians of the first machine tool factory in Beijing are full of longing for the brilliant prospects of the first machine tool factory in Beijing.

A week passed in a flash, and when Yang Weiping thought about going back to find spare parts for Worthen imported machine tools, he suddenly realized that he had left Karenia at home alone, and he didn't care about it for a whole week.

When he rushed back to his house in Room 302, Building 9, the family compound of the Military Science and Technology Commission, he saw Zhang Dashan, Sun Donghai, and Zheng Zhi playing cards in the living room with Karenia. That's when I put my heart at ease.

It seems that the top is not at ease with Karenia, and deliberately arranged for people from the Jing guard platoon in the compound to monitor her nearby.

"I'm back!" Karenia stood up and took a pair of newly bought cotton slippers from the shoe cabinet to help Yang Weiping change them. Like a gentle wife waiting for her husband.

"Why do you smell of engine oil?" Karenia asked as she helped Yang Weiping take off his leather shoes and put on his slippers, looking up at him.

"I'll tell you later. Hurry up and help me boil a few buckets of hot water, I need to take a shower. Yang Weiping raised his hand and rubbed his sore neck, and said very tiredly.

"Chief, let's take our leave. Zhang Dashan, who was dressed in a Type 65 PLA uniform, came to Yang Weiping and saluted.

Yang Weiping raised his hand to return a military salute, then stretched out his hand and patted Zhang Dashan's arm, and said with a smile: "I'm bothering you these days, I'll invite my brothers to drink another day." ”

"Xie Lu, Xie Chang!" Zhang Dashan replied happily.

Sun Donghai and Zheng Zhi saluted Yang Weiping together, and then hurried away with Zhang Dashan.

Yang Weiping casually closed the door and walked around the room.

The furnishings have not been touched, except that the double and single beds in the two bedrooms have been replaced with new bedding.

The heating was turned on and the kitchen stove was replaced with a new gas stove and gas canister. Oil, salt, sauce and vinegar are readily available, and there are a few handfuls of fresh green onions and Chinese cabbage in the vegetable basket.

Yang Weiping didn't let Meng Shouzheng and Guo Shangyi follow, but let them stay in the car downstairs. There are some things that these two people can't know for the time being.

"I'm designing a high-density five-axis linkage CNC milling machine specifically designed to process the screw thrusters of submarines. Yang Weiping didn't intend to hide this from Karenia, sat on the sofa, rested his head on the back of the sofa, closed his eyes lightly, and said very tiredly: "When this heavy gantry milling machine is manufactured, your Typhoon-class nuclear submarine will become safer when sneaking in the sea." ”

"Boss, do you mean that I can make another great achievement?" Karenia knelt on the sofa on her knees, and helped Yang Weiping press her head quite professionally.

"As I said, you satisfied me, and I will make you even more satisfied. Yang Weiping closed his eyes and said softly: "Don't press it now, go and help me boil a bucket of water, I haven't taken a bath for a week, and I'm uncomfortable." ”

"Then I'll press it for you when you're in the bath. Karenia said happily and ran into the kitchen as fast as she could.

After a while, she boiled water and came out of the kitchen, dragged a large bathtub more than a meter in diameter and half a person high from the smaller bedroom, and placed it in the living room.

Hearing this, Yang Weiping opened his eyes and looked at it, and asked in a daze, "Where did you get such a big bath bucket?"

"When you were in Nairobi, you had a habit of showering every day. Karenia said triumphantly: "I found that there is no hot water supply in your house at all, so I found the deputy battalion commander named Zhang Dashan and asked him to help me get this." ”

"Hehe, it's very thoughtful, not bad. Yang Weiping nodded and smiled: "It seems that I brought you back this time, and I didn't bring the wrong person." ”

"Boss, as long as you let me serve you, I can serve you like the emperors of ancient China. Karenia smiled and sat down next to Yang Weiping, next to him closely, her hands clenched into pink fists, knocking lightly on his thighs, and she didn't feel that the strong "manly smell" he exuded had any effect on her.

"Let's talk about it. Yang Weiping closed his eyes lightly and said softly comfortably.

Soon, Karenia began to fill the large tub with half a bucket of hot water.

Peeking at her in and out of the kitchen, busy and happy, humming softly the famous Soviet song "Night on the outskirts of Moscow", Yang Weiping shook his head dumbly and smiled.

Karenia took off her top and wore a tight red towel that outlined the curves of her upper body to be extremely charming. She rolled up her sleeves, showing her white jade arms, and while testing the temperature of the water with her hands, she smiled and said, "Boss, take off your clothes and pants! The water is ready, and the water temperature is guaranteed to satisfy you." ”

"Go and stay in the room, close the door, and when I'm done washing, I'll tell you to come out again." Yang Weiping raised his chin towards the master bedroom.

"Boss, don't you want me to help you rub your back? I know that you must be very tired now, don't worry, I promise I won't seduce you. Karenia pursed her pink lips, her blue eyes full of grievances.

"Okay, I'll trust you once. Yang Weiping smiled and nodded, unbuttoning his shirt as he spoke.

In a few moments, all that was left of him was a pair of briefs, and Karenia had turned her back to stop staring at him.

After thinking about it, Yang Weiping still didn't take off his underwear, walked to the big bathtub barefoot, reached out and tested the water temperature, it was really suitable. Then step into the tub with your feet raised, sit down with your knees hunched, and soak most of your body in the hot water.

"It's comfortable! it's so comfortable!" Yang Weiping put his head on the edge of the bathtub, closed his eyes, and couldn't help muttering to himself.

Karenia took two newly bought dry towels, moved a chair, sat down next to the bath bucket on the side of Yang Weiping's head, gently held up Yang Weiping's head, used a towel to pad the edge of the hard bucket, and then let Yang Weiping lean on his neck, put another towel on the edge of the bucket, and skillfully pressed his head sometimes lightly, sometimes rubbed, and sometimes knocked with moderate strength.

After Yang Weiping's whole body relaxed, Karenia began to help him rub his temples on both sides.