"That's right, if you want to make these parts, you need CNC machine tools, and our country made a CNC machine tool in five or eight years, and at that time it was on the same starting line as the island countries and the United States.

Sixty years when I went to the island country to investigate, their similar precision precision machine tool varieties are not as good as our country, at that time they did not have gear grinders, thread grinders, high-precision cylindrical grinders, etc., only in high-precision coordinate boring machines and high-precision measuring devices (Mitsui Seiki) than us, but they have a lot of enterprises in the entire machine tool industry, such as Hitachi, Chibei, Toshiba, Makino, Toyota, Mazak and other enterprises The manufacturing process and management are stronger than ours, and their finishing and assembly have been produced in a constant temperature purification plant to ensure quality.

At that time, there were two very famous enterprises in the machine tool industry in our country, one was the Shanghai Machine Tool Factory, and the other was the Kunming Machine Tool Factory, which was mainly due to the fact that they had a group of technical personnel and skilled workers with good technical attainments before the liberation, which played an extremely important role after the liberation.

The former undertakes the R&D and manufacturing of gear grinding, gear shaping knife grinding, thread grinding, high-precision cylindrical grinding, etc.; the latter mainly focuses on the production of coordinate boring, engraving machine, engraving ruler, circular grating, long grating, synchronous sensor measuring device; High-precision lead screw auxiliary mother machine, etc., has laid a solid foundation for the development of functional components of precision machine tools, but with the drastic changes in the situation of the country, the industry is no longer valued by the state, and the technical workers have also abandoned their own technology, the most important thing is that this inheritance is gone, can not keep up with the international trend, a flash is thirty years, and then look at people abroad, it is simply earth-shaking, I heard that the car of the island country is used in the rotary engine, this engine in my study is still only in the legend, but now people are using, you say, how our country compares with themThere's no comparison!"

In Liu Lang's eyes, Xiong Huaizhi is a serious old man who does not smile, and few people can feel his joys, sorrows, and sorrows, but now, his angry expression is helpless and unwilling.

Yes! Listen to Xiong Huaizhi said, the country's manufacturing industry at the beginning of the founding of the People's Republic of China is still very powerful, many aspects are not worse than foreign countries, some are beyond each other, but for various reasons, and then from the sixties, the country's manufacturing industry has stagnated, those skilled workers are criticized and criticized, the decentralization is decentralized, the entire training system has completely collapsed, and those developed countries abroad are developing rapidly, all kinds of advanced equipment are manufactured, one eliminates the other, and the gap between the two sides has become extremely huge in just over 20 years。

In fact, after twenty or thirty years, the country's attention to the manufacturing industry is not very high, the most typical example is the lack of attention to skilled workers, you must know that although the manufacture of precision instrument parts relies more on instruments to complete, but it contains the experience of several generations or even more than ten generations of skilled workers, it is they who continue to explore in the work in order to smelt better materials to build advanced equipment, for example, the country in Northern Europe that manufactures watches, each watch is artificially made, can buy tens of thousands or even hundreds of thousands of millions, this is not a gimmick, those watchmakers are generations of craftsmen, their skills are incomparableIn their hands, the watch has become a work of art, and this is what the craftsmen are capable of.

"Professor Xiong, you are right, our country has lagged behind too much in the past twenty or thirty years, but I also believe that as long as our country pays attention to it, the country's manufacturing level will be improved. ”

Liu Lang comforted the other party.

If many people were like you, I believe it would be very fast, but if you look at our country now, if nothing else, the entire engineering program only recruits twenty or thirty students every year, so what can such a few students do? If you go abroad and look at the number of engineers in their universities, at least dozens or hundreds of times that of us, the difference is too much, too much. ”

Xiong Huaizhi sighed.

"Well, by the way, Professor Xiong, what did you just say about the rotary engine? Why haven't I read it in a book?"

Liu Lang changed the topic and asked.

In the textbook, the engines are piston engines, the fuel is gasoline, diesel, the ship is generally heavy oil, the aircraft is aviation gasoline, and according to the arrangement of the cylinders, single-row, double-row and three-row.

The cylinders of the single-row engine are arranged in a row, which is generally arranged vertically, for example, the Hongqi car is an in-line type, and the double-row engine arranges the cylinders into two rows, and the angle between the two columns is called the V-shaped engine.

The engines were all piston in nature, and he had never heard of any other rotary engines.

"Of course you haven't heard of it, this rotary engine wasn't built until the sixties, and our textbooks were all compiled in the fifties, and they were still in use for almost forty years, so they have long been outdated.

This kind of rotary engine is amazing, its piston engine is different in that the cocoon chamber is divided into three parts, these three spaces are continuously completed in the completion of air intake, compression, work, exhaust, rotor rotation to do three work, that is to say, the single rotor engine is equivalent to a 3-cylinder piston engine, and the twin rotor is equivalent to a 6-cylinder piston engine, so its power output is very continuous, and the twin rotor engine is much smaller than the 6-cylinder piston engine in volume and weight. And because the rotor rotates all the way in one direction instead of reciprocating up and down like a piston, it has much less vibration and noise.

In addition, structurally speaking, it does not require timing chains, camshafts, rocker arms, valves, valve springs, etc., the structure is simple, the weight is lighter, and of course it also reduces vibration and noise. ”

Xiong Huaizhi said the advantages of the rotary engine like a few treasures.

"Come, you see, this is the drawing of the rotary engine, which was mailed to me by a foreign friend two years ago, and it took a lot of effort at that time, and even a machine department came forward. ”

Xiong Huaizhi took out a roll of drawings from a small iron box of his own, and unfolded it.

"It's really peculiar!"

Liu Lang was also amazed after seeing the drawings, the drawings of this engine are very simple, much more concise than the piston type, don't look small, but the output power is stronger than the piston engine of the same volume.

"Professor, since you have the drawings, and they're very simple, why don't you make one?"

Liu Lang asked.