Siheyuan starts from a better life

Chapter 445, Trial Machine Tool

"Master Niu, this Xuantong blue and white porcelain is a good thing." After they went out, Jiang Yan asked Master Niu while playing with a blue and white porcelain tea bowl in his hand.

"Okay, let me tell you the origin of Xuantong blue and white porcelain." Mr. Niu drank a glass of wine and started talking. Only then did Jiang Yan know the origin of Xuantong blue and white porcelain.

It turns out that in the second year of Xuantong, the Qing government ordered the Jingdezhen Royal Kiln Factory to fire a batch of porcelain for the imperial palace, mainly white-glazed bisque porcelain, including a small number of blue and white porcelain.Xuantong blue and white is basically an extension of Guangxu blue and white. Although the workmanship has been improved, there has never been a fundamental breakthrough in technology.

"Then according to what you said, this Xuantong blue and white porcelain is still a good thing." Jiang Yan asked.

"Good things, the longer they are kept, the higher their value becomes." Mr. Niu nodded.

What Jiang Yan didn't know was that Emperor Xuantong only reigned for three years, which was a short period of time.Blue and white porcelain is often made in imitation of antiques, and the quality is also very high. It can be traced back to the Kangxi blue and white porcelain.Due to the progress of the times, large-scale mechanized production was adopted for porcelain making at this time, so Xuantong porcelain has the characteristics of modern porcelain, so it is also a rare good thing in later generations.

After drinking this meal until the moon was over the treetops, a few people came out of the tavern and wandered back to their homes on their bicycles.

She originally wanted to take the porcelain she bought with her, but when Xu Huizhen saw that these people were all imbued with this virtue, she refused to let them take them away, and even asked Cai Quanwu to follow Jiang Yan behind.

After relaxing for a while, he went home and took a hot bath in the space. Jiang Yan lay down on the bed and fell asleep. It was a sleepless night, so refreshing.

Early the next morning, Jiang Yan still got up early and had a boxing session. After washing, he sat there and had breakfast.After breakfast, Jiang Yan went directly to the research institute.

Jiang Yan started to get busy in the research institute. There were important things to do today.

In the experimental workshop, Jiang Yan looked at the group of experts and students around him and said, "Comrades, next we have to make a CNC system. This CNC system is the core component of this machine tool. Without it, the CNC machine tool cannot be completed." Jiang Yan's voice was so loud that it was almost a roar. There was no other way. The workshop was big, there were many people, and there was no loudspeaker, so this was the only way.

"Mr. Jiang, how do you make a CNC system?" A classmate raised his hand and asked.

"I have found an old teletype machine. We can remove the typing components and transform it into a CNC program execution mechanism." Jiang Yan loudly answered the question raised by the student just now.

Originally, the core of this CNC machine tool was a computer numerical control device.It uses system control software and system hardware to rationally organize and manage the input, data processing, interpolation and output information of the CNC system, control execution components, and enable CNC machine tools to automatically process according to the operator's requirements.

However, the microcomputer has not yet been born, and the computer is still huge, so it is not practical, but Jiang Yan naturally has his own way.

The first CNC machine tool in history was a new idea that Parsons obtained while using an IBM accounting computer.He asked an employee named Frank Stuland to use a computer to calculate 200 points along the edge of the contour, and then asked the machinist to drill holes at each of the 200 sets of coordinate points. When overlapping, the profile of the template is roughly determined and no additional machining is required.All the machinist needs to do is to move the processing platform to the required coordinate point, drill a hole, then move to the next coordinate point, drill another hole, and then repeat the above actions until all coordinate holes are drilled. .

The technology still relied on humans to operate the machines, but Parsons now envisioned the next step in the automation process—motor-driven machines digitally instructed through punched cards.

Jiang Yan had been worried about how to control this CNC machine tool before. When Jiang Yan saw the technicians in the research institute repairing typewriters, he discovered that the electro-threading program in the teletype machine seemed to be able to be modified. into the command mechanism of CNC program.

The working principle of a mechanical typewriter is to convert character selection, typing arm and type hammer movement into printing of characters through key operation.Each time a key is pressed, the corresponding character is selected and printed on the paper.Mechanical typewriters were designed to be simple and reliable, but their operation was relatively slow and required a certain amount of strength and skill.

It mainly consists of keyboard, character rod, character wheel, printing plate, ink cartridge, spring, transmission mechanism, etc.

There is no way, now that there is no computer, we can only use this old method.

This old-fashioned mechanical typewriter was something Jiang Yan asked Wang Honghai to find.

However, it is not difficult for Jiang Yan to make such a typewriter. Now that the situation is urgent, he can only modify one. He will definitely make it himself later. Otherwise, after mass production, how many typewriters can he dismantle? !
"Go get that typewriter." Jiang Yan ordered the technician next to him
After several technicians heard this, they immediately went over to open the box. Inside was an old teletypewriter. The silver body was covered with dust and wear.

"This typewriter is quite old, but it is professionally made and suitable for us to modify and use."

So everyone couldn't wait to gather around and start disassembling the typewriter.Soon, the sophisticated character wheel and keystroke mechanism were exposed.

"Mr. Jiang, how can these parts be modified?" A student raised his hand and asked.

"We need to change the character wheel into a switchable CNC program wheel. Each wheel is engraved with program instructions, and then the motor drives the wheel to rotate. The instructions are read and executed according to the program sequence, and the CNC operation can be completed." Jiang Yan explained patiently.

"So this is the principle!" Everyone suddenly realized.

"However, this runner can only create one program. If you want to change it, you must replace the runner." Jiang Yan spoke again and said.

In Jiang Yan's plan, this wheel is a memory, specially used to store data of CNC machine tools and used to control CNC machine tools.

"Okay, everyone, don't be anxious. Come closer and see what I'm doing." Jiang Yan said with a smile, "First remove the character wheel."

Two technicians carefully removed the character wheel from the mechanism.

Jiang Yan took the character wheel, took out a magnifying glass and a knife, and began to modify it carefully.

He used the blade of a knife to carefully erase the original character marks one by one, and then re-engraved symbols representing various CNC instructions.

After more than an hour of careful modification, a brand new CNC program wheel was born.

"Okay, the program wheel is finished. We can now install it on the machine tool for testing." Jiang Yan raised the wheel piece high with both hands, his face filled with the joy of success.

Next, everyone focused on the typewriter, carefully installing and debugging it.

"Attention everyone, I will conduct the first CNC program test next." Jiang Yan plugged in the power and then punched a simple CNC command hole on a piece of paper.

He inserted the paper into the machine and everyone waited with bated breath.Jiang Yan took a deep breath and slowly pressed the start button.

With just a "click" sound, the CNC program wheel began to rotate slowly, and the character wheel accurately triggered the corresponding keystroke lever in sequence, making a regular "click" sound.

"Success!" Jiang Yan shouted excitedly.

"marvelous!"

"Long live!"

Everyone also cheered.

“With this CNC execution system, our CNC machine tools are not far from success!”

Jiang Yan nodded, with a happy smile on his face.

The first successful test of the CNC system gave everyone great encouragement.

(End of this chapter)