The development of CNC lathe
Since the late 1950s to make in the world a CNC lathe, CNC machine manufacturing is entered in the 1960s, China will make the first generation of nc machine tools, but then China entered the, everybody knows what. As we'll see in the 1980s, the level of nc machine tools for 20 years, is still hope, but actually bent, state-run factories to 1990s, we'll go to see the world level, 30 years gap. We walked in the seclusion of the Soviet union, what is the way that the Soviet union, for example, for example, will produce a shaft, the Soviet union is a special way of production line, with more special machine tool, the benefit is easy, but the quantity of the axis once parameters changed, this line is discarded, production personnel is doing nothing. In 1960-1980, state-run factories in decades, a production never. In the 1980s, when make commodity economy, the factory can quickly adapt to the market, the business is difficult to 1990s of bankruptcy, a large number of laid-off workers. Ah, this is the laid-off workers.
Modern production has mass production, but mostly small batch, whether that piece of equipment, as long as you are used to control, quickly. Professional tool path has been exhausted, westerners is very clever, path and the soviets, "", Toshiba is Japanese Toshiba sold Soviet several sets of 5-axis CNC milling machine, let the Soviet union in advance of the submarine propeller manufacturing, a class, let us hear a voice sub sonar, so the United States to punish Toshiba. Thus, the Soviet union was also seen the machine manufacturing also left behind, they say, we will be more backward.
Although, the United States to make the world's first nc machine tools, but the development of nc machine tools, or to Germany. Germany is in the world, mechanical CNC machine is make mechatronics, Germany has no mechanical, electronic systems, Germany is the electronic system industry was strong, so in the 1960s and 1970s, Germany will get the machine of processes.
But Japanese strengths are fake, from the 1970s, Japan imported from German technology and a massive counterfeit, after digestion, Japan in the early 1990s, beyond the Germany, as the world's top producer of nc machine tools, until now. They made in machine tools, some level also walk in the world, such as in front of composite (machine tools of multiple functions), is the world's first. The core of CNC machine, CNC system in Japan in the system are the world first, it is main with the hair. The first generation of the system with stepper motor, and now we can build, second substitution ac servo motor. Now is the core of the nc system with ac servo motor control system software, the logic of ac servo motor is our country hasn't who can manufacture, this is an optical, mechanical, electronic Mosaic. Logic control software is controlled machine tool of the axis movement, and the shaft is driven by servomotor, general system can also control three axis, senior system can control the dickin, can control the five axis, 5 axis above is fine. Our country also has 5 axis system by show ", but "the ingredients, haven't practical. Our factory with five axis and five axis machine imported 100% above.
The machine is a symbol of national manufacturing level, its core is the numerical control system. We currently don't say the system is made of domestic, the quality of nc machine tools, precision ball screw, bearings are imported, main is to buy Japanese, we sell the ball screw, bearing in precision, life has problems. Current domestic big machine tool factory, CNC system, each manufacturer 100% outsourcing usually buy it, mitsubishi Japan accounted for more than 80% of the system, and also have the Germany Siemens system, but less. Germany Siemens system with less? Why? Earlier, Germany system can not suitable for our power grid stability, we, Siemens system of electronic servo module easily burnt out. Japan is different, the system will burn them not bad. Recently, a lot of Siemens system improvement or slightly higher price. The germans are not Chinese, so they value system of the Chinese have recently, not like Japan, have the old Chinese version.
Just domestic advanced numerically-controlled machine tool, the profit of the subject is taken by foreigners, we just made a hard cash.
Why the United States not to become CNC machine manufacturing power? And they set the time of industrial policy, coupled with the relevant Labour, buy the expensive than manufacturing. Machine, effective belongs to slow investment returns, the industry, but also need the accumulation. Not too conforms to the United States. But later that old beauty tool, belong to strategic materials, without it, your aircraft and artillery, tanks, ship manufacturing problem, so they have to develop policies and foster some machine tool factory, provided some units can buy domestically-manufactured equipment, is too expensive for us to buy, it is some numerically-controlled machine tool industry. American machine in the world no competition.
Europe's machine, outside of Germany, Switzerland is also very good, high precision machine tool, to Switzerland, but the price is quite good. General user can use. Italy, Britain, France, we seldom buy of second-class their tools. Ha ha, Spain to let us buy their machine, loans to us. The man said that, rarely, buy to borrow money always.
Nc machine tools in Asia outside Japan and South Korea, in Taiwan's manufacturing capability, but also stronger than us. They are in the 1990s technology development from Japan. South Korea should better, it has its own manufacturing, has been commercialized nc
