If you use ordinary machine tools to produce parts with complex structures, you need to process one surface first. After the processing is completed, change the fixture and then produce another surface. In this way, during the process of changing the fixture, processing errors will occur.
The advantage of multi-axis linkage is that as long as the blank is fixed, it will not move. The processing is completed in one go, so the accuracy will naturally be higher.
However, if the equipment is not powerful...
"The maximum diameter of the impeller, error in millimeters!"
"Thickness of impeller, error in millimeters!"
"Error of impeller center axis, millimeters!"
Wang Jinbao held a 50-degree vernier caliper in his hand, measuring various data. As he shouted, everyone's hearts went cold.
how so?
Even if they used ordinary machine tools for processing, there would not be such a big error!
Luo Wenzhong was even more surprised: "How could this happen? We have completely debugged it! During debugging, we processed an aluminum ingot, and the processing error was below millimeters!"
Before they process the impeller, they first have to debug the machine. After debugging, they use the built-in program to process an aluminum product, which fully meets the requirements. Now, who would have thought that the error in processing the impeller would be so big!
What's the problem?
"There is no problem with aluminum products, but when processing impellers of special alloys, errors will increase. The biggest problem is that the linkage double pendulum milling head of our five-axis linkage CNC machining center is not rigid enough."
Not rigid enough?
These people who work on machine tools are confused.
"The rigidity is not enough, so during processing, the turning tool does not exert enough force, and the processing cannot reach the predetermined accuracy. At the same time, after several processing, the bearing inside the linkage double pendulum milling head will leak oil. You can disassemble it.
Let’s take a look.” Qin Tao said.
"Oil leakage? Did Lao Maozi say that too?"
Qin Tao nodded grandly: "That's right."
No one knows whether Lao Maozi copied Toshiba's machine tools. Qin Tao can definitely blame Lao Maozi.
"Take it apart and take a look!" Luo Wenzhong made up his mind.
"Gong Luo, if we take it apart and there is no problem, we have to re-debug it. We debugged it for a whole day before we achieved the design goal." A technician said.
"Now that the accuracy cannot be achieved, we have to take it apart and study it. Moreover, I believe in Mr. Qin's analysis." Luo Wenzhong said.
Half an hour later, everyone looked at the oil-leaking bearing inside the tall linkage double-oscillation milling head, and everyone was so impressed by Qin Tao's analysis.
"Mr. Qin, how should we solve this problem?" Luo Wenzhong was already asking Qin Tao for help.
"Using imported bearings, we can probably process about fifty sets, and then replace them with new ones." Qin Tao said: "Your machine tool factory must also continue to study and improve, and take the path of forward research and development."
The domestic ones are like this. Currently they can only solve the problem of availability. The accuracy cannot be completely controlled and the lifespan is also very short. However, Qin Tao has no other choice.
It is possible for him to spend huge sums of money to import them from abroad, but the machines must be supervised by foreign manufacturers and cannot produce military parts. The product here, the water jet propeller, was originally intended to be used on the 022 missile boat, so,
He would never tolerate being under the control of others.
No matter how bad the domestic ones are, even if only two of ten impellers are qualified, he still has to use them. This will also promote the continuous improvement of the machine tool factory, and finally produce equipment with longer life and higher precision!
In the military industry, we can only develop engines, waterjet thrusters, electronic equipment, radars, fire control systems, satellite communication systems, etc. All the chips inside are domestically developed and do not need to reach the
Civilian grade, as long as it can be used.
Luo Wenzhong nodded: "We will work hard."
On the 28th of the twelfth lunar month, Qin Tao returned to Mingzhou Shipyard, and he brought back two waterjet propellers produced by Huating No. 2 Water Pump Factory.
"Everyone, this is a water-jet propeller produced by us. The price is only one-third of that imported from abroad." Qin Tao placed two water-jet propellers at the door of a warehouse dedicated to missile boat parts and asked several people
The military representative said.
Meng Fansheng opened his big mouth: "You produced it yourself? So fast?"
"Yes." Qin Tao said: "We have promised before that we will solve the problem of water jet thrusters ourselves. After the MTU diesel engine is domestically produced, all the parts on our missile boats will be produced by ourselves.
, to avoid being controlled by others.”
So far, they are still using imported water jet propellers, imported in the name of civilian use. The exporter Rolls-Royce is well aware of this, so this kind of water jet propeller may be used at any time.
They cut off the supply, making it impossible to continue building our own missile boats.
If you want to solve the foreign embargo risk, you have to do it yourself. Mingzhou Shipbuilding Industry Group did not wait or apply for funds from relevant naval departments, but solved the problem by itself. This made several military representatives very emotional.
.
"These water jet thrusters have not been tested. If they are installed on our missile boats, there may be quality problems." Guo Wei frowned and said, he is in charge of this part, and he must be responsible. If something goes wrong,
He wants to eat peanuts.
"So, I only brought back two water jet propellers." Qin Tao said: "We first installed a missile boat for experiment, paired with two imported water jet propellers, and waited until the navy tested thousands of water jet propellers.
Haili, there is no problem with the performance. We will change the equipment in large quantities. Representative Guo, please report it to your superiors. I believe your superiors will approve it."
Guo Wei nodded. If he only changed two units, the missile boat would not be completely trapped, so he could still give it a try.
After trying it, decide whether to use it in large quantities.
Zhao Ling looked at Qin Tao from the side with a smile on her face.
"If these waterjet thrusters can achieve the same performance as imported products, then Qin Gong has made a contribution to our navy." Zhao Ling said: "Qin Gong, when do you plan to go to the navy to report?"
"Well, it's the second day of the Lunar New Year." Qin Tao said, "I will book a train ticket in advance for the night of the Lunar New Year. In this way, I can go to the capital during the day the next day and report to the leader."
Guo Wei frowned. On the second day of the Lunar New Year, the leaders were not at work. However, just as he was about to say something, Meng Fansheng stopped him: "Let's go and see first which missile boat is equipped with this
Two self-produced water jet thrusters are most suitable."
Seeing the two people leaving, Zhao Ling boldly reached out and took Qin Tao's hand.
"Brother Tao, how many train tickets did you buy?"
"Of course it's two beds, and it's a sleeper berth."
"Two? Are you so confident? What if I decide to leave on New Year's Eve?"
"Then I will go with you."
"Well, I'll go find you tonight?"
"No." Zhao Ling was very determined.
After Cong Ju's husband came over, Zhao Ling moved out of the original dormitory and reunited Cong Ju's family. Zhao Ling lived in the newly tidied room next door.
Zhao Ling lived alone, which simply gave Qin Tao a chance. However, Zhao Ling also knew that in this era, living together without getting married would be very bad if someone found out.
Even if the relationship between the two is semi-public at this time, that won't work.
Therefore, Qin Tao has to endure it a little longer.
………
"I want to have a home, a place that doesn't need to be gorgeous. When I am tired, I will think of it..."
In the conference room of the shipyard, a 17-inch color TV was placed at the highest position, and countless pairs of eyes watched the beautiful female star singing inside.
Today is New Year's Eve, and the TV is showing the Spring Festival Gala.
With the reform of the shipyard, the wages paid to the workers are also constantly increasing, plus year-end bonuses. Therefore, almost all the old shipyard employees have TV in their homes. However, there are still some people who don't like it.
Those on TV, such as Cong Ju’s family, the military representatives, the Marine Corps soldiers protecting this place, and some new workers in the shipyard.
Therefore, in order to enrich the New Year life of these people, Qin Tao specially bought the largest color TV set and placed it in the conference room to show everyone the Spring Festival party.
People in the room were all watching TV with great interest. When he saw this, Qin Tao suddenly said with emotion: "I want to have a family."
Zhao Ling on the side looked at Qin Tao with meaningful eyes, as if she had guessed what Qin Tao was thinking, but she still guessed wrong.
Qin Tao looked at Qin Baoshan aside: "Old man, I have another idea."
"explain."
"There are more and more employees in our factory, and the problem of housing will gradually become more prominent. I have decided that after the Chinese New Year, we will build a few residential buildings next to our family homes. It doesn't need to be many, they will all be built to sixty
Just two bedrooms and one living room with more square meters will be enough.”
"What?"
The eyes of the workers present all turned away from the TV and looked at Qin Tao. At this moment, the temptation of the Spring Festival Gala was obviously not as great as Qin Tao's words.
Divide the house!
This is a characteristic of the times that is misunderstood by later generations. In later generations, so many people cannot afford to buy a house, so they will recall the good times in the past and envy them for being able to get a house.
This is just like envying the world of Datong in ancient times. Because you can't get it, you think it's beautiful. In fact, the era of housing distribution is even more cruel.
Just look at a simple data. When the country was first established, the per capita housing area in cities and towns nationwide was 4.5 square meters. By 1978, the per capita housing area had dropped to 3.6 square meters. Are you still envious?
Complain that you can’t buy a half-square-meter house with one month’s salary, and then envy that you haven’t caught up with the welfare housing allocation?
If I save a year’s salary and buy 3.6 square meters, it’s still no problem, right?
In the era of welfare housing distribution, it was also common for a family of seven or eight to live in a tube building of 20 to 30 square meters, and what was even more cruel than this was waiting.
Some people stay until they retire, well, they finally get a house.
Where has the house gone?
Of course it’s not covered enough!
When a factory was first established, it had 800 employees and built 500 houses, which were barely enough to live in. As a result, ten years later, it had 2,000 employees and built 200 new houses. In this way, the new workers had enough room to live in.
?
If it's not enough, just wait.
What should I do if I can't wait? Spending money on gifts, using power for personal gain, and getting beaten to death for a house are all too common.
Therefore, things like dividing houses must be viewed dialectically.
In the Northern Kimchi Country, houses have always been divided into separate houses. Who is willing to settle in the Northern Kimchi Country?
In response to various problems arising from housing allocation, the country began to reform in the 1980s. Urban residents could buy or build their own housing. This kicked off the housing reform.
The housing problem in Mingzhou Shipyard is not big. After all, there are many elderly people. Those who have moved from other places have already had houses in the family homes of the shipyard. However, starting from the past year or two, under the leadership of Qin Tao,
Next, the scale of the shipyard is getting bigger and bigger, and there are more and more people. Even those people are recruited from nearby villages, and they hope to settle down in the shipyard.
In addition, Qin Tao wants to recruit college students, recruit talents, etc., and the housing problem has reached a point where it must be solved.
However, Qin Baoshan did not immediately nod in agreement, but instead frowned. He was a scheming man, and of course he knew the huge crisis contained in it. If he didn't do it right, it would cause huge conflicts.
People are selfish, and there are not many people with high moral standards like Qin Baoshan. If a house is built, no matter whether you have no house or have a house, who doesn't want to buy a new house to live in?
The characteristics of the era of welfare housing allocation are that the houses you live in are different at different levels, and they are promoted one level at a time. Therefore, after waiting for a long time of more than ten years or even decades, even if you are allocated a house, it is definitely not a new house. Early on
I don’t know how many people lived there.
The shipyard that seems to be united now may have a lot of conflicts and disputes due to the division of houses!
Qin Baoshan frowned and said hesitantly: "It seems that our shipyard doesn't have the budget for this yet, right?"
Qin Tao nodded, he still admired his father very much. Sure enough, Jiang was still hot, but he had already thought of these problems.
Dividing houses? It doesn't exist. He has no intention of doing so.
"So, we plan to raise funds to build a house."
Raising funds?
Everyone was stunned again.
"Those who don't have a house now, if they want to get a house newly built by us, they need to raise funds. Everyone will jointly contribute money to build a house and live together."
Those who are qualified, capable, and shameless will all think that they are qualified to be allocated a house, and they will all come out to stir up trouble. In this way, because of the allocation of houses, there will be a lot of trouble in the factory. Qin Tao's solution is also very simple.
Yes, you want a house? Then pay for it!
Why are people rushing to share rooms? It’s not because they don’t spend money! You can get eggs for free at the supermarket. Look at those old men and women who queue up early in the morning.
Once the house is built, it is impossible to ask employees for money. So now, before building a house, you have to pay the money first and set the rules first.
"Raising funds to build a house?" Qin Baoshan was thinking about Qin Tao's words.
"That's right, according to the current cost price, a 60-square-meter house costs about ten thousand to twenty thousand yuan. The factory provides part of it, and the majority is paid by the employees. Let's consider it ten thousand yuan!"