Chapter 205

Computers in this era still belong to those tall things. Just in terms of price, an apple 2 computer is enough to buy a Siheyuan in the capital.

It is destined to be the minority of the minority. Ordinary people can't control it. Who has touched the computer?

Everyone took it with care, put it next to the CNC machine tool for Sandra, opened the box, and Sandra skillfully connected the data cables, and then turned on the computer.

"Di." there was a soft sound inside. Slowly, after waiting for a few minutes, the beating characters on the screen passed and a color picture appeared.

Apple 2 is cross era. It has an 8-bit processor and a frequency of 1MHz, which is of course insignificant compared with later generations. However, it has realized many firsts, such as its graphical interface, such as its built-in programming language.

"Now, I'm going to work," said Sandra, and began to drive away the people who helped her carry the machine.

Sandra watched the crowd leave, pulled over the telephone line, inserted the crystal head into the computer, and then her fingers jumped quickly on the keyboard.

She didn't operate the CNC machine tool at all. She was just operating the computer at hand. At this time, her mood gradually became impatient.

There is no sign of successful connection on the screen. What's going on?

Come on, come on, she looked at the screen, hope slowly turned into disappointment.

"Ha ha." Qin Guan listened to Xiang Jing's report in his office and immediately laughed: "this ocean horse is really whimsical. He wants to surf the Internet!"

"What is surfing the Internet?" He Ri Bala asked, "we're in the workshop. Don't we have any nets?"

It's normal that people in this age don't understand what is network. Even in the western world, network is still a new thing.

Although TCP / IP protocol has not appeared yet, the research on the Internet began in the 1950s. It was initially studied as a military network and gradually transferred to civilian use.

In China, dial-up Internet access began in the 1990s, and now, in western developed countries, it must have begun to try this way to surf the Internet.

Sandra, a foreign expert in loading, thought she was awesome. She asked for a computer, not necessarily on a machine tool. First of all, she wanted to connect to the Internet.

In China, there is not even a network operator. This telephone line can only take analog signals, but also want to use the telephone line to surf the Internet?

You think it's a phone line? Unless you're the best hacker of our time.

The phone doesn't work, and the Internet doesn't have a way. Do you want to contact the outside world in this place where birds don't shit?

Have you heard of the snow town of later generations?

It's isolated from the world. If you want to go out, you have to take a bus and reverse. There is thick snow around. One can't run away. Therefore, when you get there, you can't go if you don't want to be slaughtered. Do you want to go? You have to go. It's frozen to death. You can't find it until the snow melts the next year.

Today's Grassland city is almost the same.

The weather is getting colder and colder. There is snow everywhere. It's not easy to go. Stay here obediently!

Computers are also bought at a high price. If you don't start work again, you will have to deduct your salary. Everyone is waiting!

Time passed little by little. When Xiang Jing returned to observe again, Sandra had officially started work.

This machine tool has never been seen before, but Sandra is not too worried. The principle of the machine tool is the same. Now, she clamps the workpiece for the machine tool, enters the program, and then starts the machine.

"Hum," the motor below turns and drives the workpiece to rotate. Driven by the linear motor, the turning tool begins to move towards the workpiece, and then a trace of iron filings rotate out.

At this time, Sandra had put on her work clothes and hat, stuffed all her hair in, tightened her cuffs, and her hands looked very professional with gloves.

Machining is very dangerous. If you don't pay attention to the safe operation procedures, your life will even be in danger. Sandra gave up the idea of contacting the music country and finally started work. At this time, she is quite capable, as if she had changed a person.

The three turning tools act together. Soon, the production of the workpiece inside has been completed. Stop the lathe and remove the workpiece. Sandra picked up the caliper and began to measure carefully.

The surface is very smooth. I'm afraid it can be used even without entering the grinder. Looking at the numbers on the caliper, Sandra suddenly opened her mouth.

No way. How?

When you get on the machine, the size should be slightly larger, so that you can enter the grinder for deep processing. Now, the size of the workpiece is only 0.002 mm different from the size you set!

This CNC machine tool, under its own operation, has higher machining accuracy than its own in the music country! In China, our own machining accuracy is 0.005 mm, which is enough to meet the needs of the oil pump, while the other party's machining accuracy is so powerful?

Is this CNC machine really made in China?

No way, it's absolutely impossible!

Try the grinder again!

The surface of the plunger has been quite smooth. After setting the program of the grinder, sparks splashed inside. A few minutes later, Sandra took out the workpiece inside.

Then she measured it with a caliper. Her surprise was beyond description.

The error is zero and there is no error.

Of course, according to the theory, the error always exists, which can only be reduced as much as possible, but can not be eliminated.

The main reason is that the caliper on hand can only measure 0.002, but now after the processing of the grinder, the accuracy of the oil pump plunger has been less than 0.002 mm. Therefore, there is no error when you measure with the caliper.

What does this machining precision mean?

It means that the plunger of the oil pump will be in closer contact with the side wall, and the oil leakage will be less. In other words, the pressure of the pump oil can be continuously increased. The higher the pressure, the better the diesel atomization, and the higher the efficiency of the engine!

If only we could introduce a set of such CNC machine tools!

Now, the technology of Mercedes Benz ng80 heavy truck in Hans is advanced, and the om402 power system used above is extremely powerful. If you can have such equipment, you can create a power system comparable to Mercedes Benz heavy truck.

Thinking of this, Sandra's face has shown joy. Unexpectedly, there can be such a surprise here!

Of course, only one component can't be detected. Next, make new parts to see if this accuracy can be maintained!