What is the difference between heavy machinery and light machinery?

What is the difference between heavy machinery and light machinery?

According to the classification of my country and European continental countries, mechanical equipment is basically divided into production machinery computer), instrumentation. Among them, the first three categories are related to the classification of heavy machinery and light machinery. In fact, the difference between light and heavy machinery lies in the weight of the mechanical equipment itself. However, because the basic material of mechanical equipment is steel, and the energy source is electrical, which is relatively homogeneous, the heavier the general mechanical equipment, the larger its volume, the larger the size of the object processed by the equipment, and the greater the output power. . Therefore, those mechanical equipment with large volume, high output power, and large processing objects are classified as heavy machinery, and those with small volume, low output power, and small processing objects are called light machinery. In fact, the dichotomy between heavy machinery and light machinery is basically meaningless. Heavy machinery includes means of production (construction machinery, metallurgical machinery, etc.), and means of subsistence (large passenger ships, passenger trains, etc.), and light machinery is the same. Half of machine tools are light machinery, and all household motor vehicles are light machinery. So there is no question of one being more fundamental or more important than the other. Heavy machinery is not necessarily all operated by powerful large enterprises. There are also many small and medium-sized enterprises (less than 500 employees). 90% (the statistical data is exactly 90%) are enterprises with less than 500 employees, but in the field of heavy machinery, there are also large enterprises with tens of thousands of people like Caterpillar and MAN; not all light machinery manufacturers are small and medium-sized enterprises. For example, Volkswagen, General Motors, Toyota, FAW, Dongfeng, and other auto giants all produce light machinery (family cars), so there is no problem that one is more the backbone of the national economy than the other. Heavy machinery does not necessarily represent high technology and high productivity, and light machinery does not necessarily mean irrelevant. For example, heavy machinery such as large aircraft, high-speed rail, and space shuttles do condense high technology, but now forging machine tools are no matter how big they are. Heavy, without automation, is an outdated thing; while the CNC machine tools produced by DMG, Julang, and Haas, 90% of them are light machinery, and Tesla electric vehicles are undoubtedly light machinery, but these equipments condense the most cutting-edge technology . All in all, mechanical equipment has no name at all, and they are all artificially divided and classified. The difference between them is really like becoming a great writer when you just know how to write your own name. It is almost meaningless to distinguish this group of concepts, and the problems in the field of mechanics still need to be discussed in detail one by one. Generalizations that are too abstract are empty talk.