0p0 Page 428
Page 428
Tang Hua also laughed and said: "The grinding machine is the same as the lathe just now. China can already produce most of the parts. For example, the structure, motor, controller, and abrasive tools of this grinding machine are all made in China. This grinding wheel is only enough for grinding. For steel, if you want to grind harder cemented carbide, you have to switch to special grinding wheels imported from the Soviet Union. However, the special grinding wheel Fushun is already preparing for imitation production, and it is expected to be localized in 1956.”
"This is the drilling machine workshop, and the 2A592 radial arm drilling machine is being produced. The characteristic of the drilling machine is that the workpiece is fixed, and the tool, that is, the drill bit, rotates to process holes on the workpiece. The drilling machine is a universal machine tool with a wide range of uses. , the parts can be drilled, reamed, reamed, countersink and tapped. When the drilling machine is equipped with technological equipment, it can also be bored. The high-precision ultra-long rod drilling machine is also used to make gun barrels The key equipment. Starting today, we can not only produce guns by ourselves, but also the machines that produce guns.”
"This is the milling machine workshop. Now a 6H82 universal milling machine has been assembled. The milling machine has the most elaborate and complex structure among these types of machine tools, but it is also the most versatile. It can process planes, grooves, toothed parts, and spirals on the milling machine. Shaped surface and various curved surfaces. In addition, it can also be used to process and cut off the surface and inner hole of the rotating body."
……
After introducing the 6H82 universal milling machine, Tang Hua led the chairman and the delegation to a relatively empty wall of the milling machine workshop.
"The commissioning of Shenyang No. [-] Machine Tool Factory last month ended the history of China's inability to mass-produce electric machine tools. The reconstruction and expansion of Shenyang No. [-] machine was completed so quickly, thanks to the help of the Soviet comrades. With the help of the Soviet Union, we established a modern The machine tool industry has given China's industrialization a solid foundation in the machinery industry. With this solid foundation, of course we must continue to move forward, develop and make breakthroughs. The latest breakthrough..."
Tang Hua scratched his head, pretending to be thoughtful, "I finished it last week."
Deng Zifei laughed.
The chairman and Li Fuchun smiled. It wasn't the first time Tang Hua played such a naughty act.
Tang Hua also smiled, and pressed the remote control in his hand. This wall is actually not a wall but a huge rolling door.The motor turns, and the shutter door slowly rolls up.
A universal milling machine similar to the milling machine just now appeared in front of everyone.It looks a bit like 6H82, but the working area is covered by a glass dome.Also the main differentiating features are a small monitor and a small case on the side.
"This is the first CNC machine tool, or computer-controlled machine tool, that we've assembled."
The computer is already on.Tang Hua, the chairman and others walked into the cubicle of the workshop.
"We only need to operate the computer, and the computer will automatically issue a series of commands to operate the machine tool, so that this CNC milling machine can complete very complex and precise machining work."
Everyone looked at this somewhat different milling machine.
"That is to say, as long as we press the control button, this machine tool can complete several actions?" Deng Zifei asked.
Tang Hua: "Not only that, but the milling cutter controlled by the computer can perform quite complicated and precise movements. For example, drawing a standard circle, ellipse, parabola, hyperbola, or performing three-dimensional movements, these movements are considered the most It is also difficult for skilled workers to complete."
Tang Hua motioned everyone to look at the code on the monitor, "Here is the command that the computer will issue to the machine tool. The meaning of the first line is to make the milling cutter perform such an action." Tang Hua scratched in the air, "The second The meaning of the line is to make the milling cutter move like this... We have written about 400 lines, as long as this key is pressed, the computer will start from the first line and perform more than 400 actions in sequence."
Tang Hua signaled members of the industrial computer development team to push up a trolley, on which was a cylindrical aluminum ingot with a diameter of 20 centimeters and a height of 30 centimeters, and a painting.
Tang Hua picked up the painting, which was a portrait of Lenin.The members of the team uncovered the glass cover of the CNC milling machine, lifted the aluminum ingot into it and fixed it, and then covered the glass cover.
"Chairman, you only need to press this button on the computer, and in 10 minutes, the aluminum ingot will be processed into a shiny sculpture of Lenin."
Chairman:? (points to his nose)
Tang Hua nodded continuously.
The chairman took two steps forward and came to the console.In fact, the chairman had used the keyboard before, according to where Tang Hua pointed, he tapped the carriage return lightly with his index finger.
The milling machine roared.Fortunately, it is covered with a thick sound-proof glass cover, and there is a shock-proof table under the machine tool, and the soft aluminum ingots are processed, so the noise is not too loud.
The milling cutter suddenly moved. As a three-axis semi-NC milling machine, it moved quickly and accurately. This was the calibration position, and then the milling cutter moved towards the aluminum ingot.
The metal debris inside the milling machine was flying, and the milling cutter quickly drew a closed curve on the aluminum ingot, followed by the second and third...
When the first closed curve is drawn, the water spray hole inside the milling machine starts to spray water towards the aluminum ingot.
"When the milling machine is processing metal, the frictional heat is very strong, so it is necessary to spray water to cool down while processing." Tang Hua said to the chairman.
The chairman looked at the computer screen next to him for a while, where the code was scrolling line by line.It is a pity that the memory and computing power of the current control computer are not enough to support the dynamic picture of the [-]D model, otherwise a small window should be displayed simultaneously to display the processing progress of the workpiece.
After a while, the chairman looked at the milling machine again, and the aluminum ingots inside were being processed while rotating.
The workers in the milling machine workshop were also present. Because of the need for confidentiality, these workers did not know that there was a CNC milling machine in this corner. Now they are also witnessing the machining process of the CNC milling machine for the first time.
Under everyone's eyes, the CNC milling machine is like a well-thought-out painter or sculptor, completing his works of art leisurely.
……
"Now it's finished, let's let the machine spray water on the sculpture for a while, it's probably still hot."
The soundproof glass cover was opened, and a stream of water vapor mixed with the faint smell of burning metal came out and rushed into everyone's nostrils.
The portrait of Lenin was taken out.
"This sculpture still weighs four to five kilograms. Chairman, would you like to pick it up?"
The Chairman nodded and held up the aluminum Lenin statue to watch carefully.
Tang Hua turned back: "Director Wu, do you think the chairman's skill is equivalent to what level of workers in the factory?"
Director Wu: ...
Deng Zifei, Li Fuchun: ...
Chairman: "Do other countries have CNC machine tools like this?"
Tang Hua: "In 1952, that is, the year before last, the Americans used their own vacuum tube computer as the operating device to manufacture the first CNC machine tool. To be honest, the computers we produced in 1950 were much more advanced than his, but at that time Our country can't produce machine tools by itself, so let the Americans take the lead. However, the CNC machine tool in the United States can only manipulate the tool to draw two curves, while our computer can execute 1024 commands at a time. The CNC machine tool in the United States can only It can move within the plane range, while ours is three-dimensional, which means that the machine tools in the United States can only draw on paper, while ours can make sculptures.”
Deng Zifei: "That is to say, our CNC machine tool is not the first in the world, but it is currently the most advanced in the world."
Tang Hua nodded.
……
112B Factory - Shenyang Tactical Missile Production Complex.
"Chairman, CNC machine tools will be used in the national defense industry and high-precision civilian machinery industry. Factory 112B will definitely use CNC machine tools. Because it and Shen Yiji are both in Shenyang, and they are the most important defense industry factories, so it It will be the first factory to use CNC machining centers."
The next day, when inspecting the 112B factory, the chairman still couldn't forget the magical scene yesterday, and the most frequently asked question was about the CNC machine tool.
The chairman found that what Tang Hua said just now mentioned a new term. "CNC machining center?"
"The CNC machining center is a high-efficiency automation system suitable for processing complex parts composed of a variety of CNC systems. It includes more than one CNC machine tool, and a CNC machine tool can automatically change to different tools."
"Machine tools are the product of the second industrial revolution, and this computer is the third industrial revolution." The chairman looked at the factory in front of him, "CNC machine tools are the fusion of the third and second industrial revolutions. This is also our current situation. Supplementary lessons for the second industrial revolution and pioneering for the third industrial revolution should be carried out at the same time.”
Tang Hua: "That's right. The third industrial revolution is the biggest driving force. We have to run faster to catch up with those who started earlier than us."
112B的四条生产线都还在运行，分别生产鹰击-1舰对舰型、空对舰型反舰导弹、红旗-1防空导弹和红旗-2防空导弹。红旗-1/2防空导弹因为地空型和舰空型的区别不太大，因此合在一条生产线上制造。
Some of these missiles are supplied to our army for daily training and combat readiness ammunition storage, and some are supplied to the Soviet Union.
After informing the Soviet side that the Hongqi-1/2 and Eagle-1 were only transitional products and would be updated in a year or two, the Soviet side stopped building a special production line in the country and imported the whole bomb directly from China.
If you count carefully, most of the missiles coming out of the four production lines are supplied to the Soviet Union.About 1% of the Eagle Strike-70 was given to the Soviet Union, and 1% of the Red Flag-2/60 was given to the Soviet Union.
No way, the size of the Soviet Navy and Army is too large...
Deng Zifei: "Will future wars be guided by missiles?"