In real work, most CNC machine tools have their own automatic locking function in the system when they leave the factory, and the situation is: because most of the CNC machine tools are more expensive, less than hundreds of thousands, more than hundreds of thousands, or even millions, in many cases we don't have so much money when we buy machine tools, so what to do?
So there is a mortgage, the down payment is paid, the machine tool can be pulled home, within the agreed time, the buyer repays on time after the seller will send an unlock password to unlock, if the repayment is not completed on time, the machine tool will be automatically locked within the set time (of course, the machine tool will not be suddenly locked during the work process, but after a part is processed, or the next day, the machine tool system will be locked and unable to work).
But the article brought to you today is not just an installment lock, everyone read the following article carefully, to see if you have encountered such a situation in the machinery manufacturing industry for many years?
Why lock up the machine?
In the Chinese market, most of the machine tools with automatic locking equipment are Japanese equipment, while the restrictions on machine tools made in Germany are much more relaxed.
According to public information, in the era of the United States and the Soviet Union competing for hegemony, the Western camp led by the United States in order to prevent high-tech equipment from flowing into the socialist camp for military purposes, as early as 1949, the United States established the "Multilateral Export Control Coordination Committee" (COCOM), that is, the Paris Coordination Committee (referred to as Batumi), to carry out a technological blockade against China, the former Soviet Union and other countries. Japan** followed the United States in joining the Batumi Organization and has made China a priority for its technology export controls.
For more than 60 years, although the international environment and situation have been constantly changing, Japan's strict technology export review and control policy against China has continued to this day.
Only the white countries (26) can export without restrictions, Russia, India, and China are all within the scope of the restrictions, and Japanese companies exporting machinery to these countries need to be reviewed by the Ministry of Trade and Industry, and the main concern is that it will be applied to military processing. Therefore, we see that the five-axis linkage high-precision CNC machine tools exported by Mazak, Mori Seiki and the DMG led by it will have an automatic locking device.
So, how does this auto-lock feature work?
There are two popular sayings in the industry: some people say that the GPS positioning module is installed, and some people say that the gyroscope or level is installed, and the device senses that the machine tool shakes more than a certain angle, and the system will be locked and the password is required.
However, after thinking about it carefully and consulting several engineer friends who installed and debugged, they all agreed that the first statement was problematic.
The machine tool is installed indoors, and the high-precision equipment may even be alone, and the poor GPS signal has become commonplace, and if the GPS signal is not available during installation, it is simply a nightmare for the manufacturer. Generally, it must be stably positioned in a place with a good outdoor signal, and indoor auxiliary positioning needs to be carried out through a mobile communication base station, so machine tool manufacturers will not use the positioning method of trustless communication. It is very simple to verify whether this is the case, buy a signal jammer to block the base station communication, the machine tool will definitely not be locked, and the manufacturer will not be stupid enough to rely on this kind of thing.
Therefore, the installation of gyroscope or electronic level is the real reason why the machine tool can realize the automatic locking function, and it is not excluded that a very small number of machine tool manufacturers with technical strength have joined the GPS communication module, but after all, it is not the mainstream.
The last question, the automatic locking module set up to prevent mechanical movement, what is its practical significance? Is it really possible to prevent manufacturers from changing production uses?
It is commonly said that in order to prevent the Chinese side from purchasing high-end equipment for the processing of first-class parts under the guise of private enterprises, the Japanese side has installed an automatic locking device to prevent the machine tool from being moved to the arsenal. This reason is far-fetched to think about, the machine tool does not move, but the workpiece can be moved, and it cannot play the effect of technical secrecy at all. I have seen some high-end machine tools imported from Japan before, and the warning signs on the back are pasted in Japanese, saying that they are prohibited from being used in the processing of military products.
In fact, the symbolic significance of such a function as automatic locking is far greater than the practical meaning today, and it belongs to the product of the Cold War era. The Soviet Union has long since collapsed, and its socialist camp that dominated socialism has long since ceased to exist. Today, with the advent of the new century and the acceleration of the process of world economic integration, everyone has made a fortune together living in the same global village. Some high-end equipment in Germany has been exported to China, and Japanese companies feel that slowing down this restriction is conducive to exports, and do not want to have this additional cost burden, but the leadership attitude in the department is more neurotic, so this restriction has been like chicken ribs until now.
However, in some machine tool companies in the United States, such as Haas (Haas) brand processing machines, all the company's CNC is paid in installments. Before leaving the factory, the machine is preset to expire and shut down, if the next bill has been paid, you can call ** to customer service to get a code to enter the machine tool. If the next bill is not paid, GPS can locate the machine and automatically lock the machine.
Netizen said: @大魔法挊:
First, the Japanese machine tool, Mazak, MORI, should be installed with a gyroscope or level, I talked to the engineer of installation and commissioning, the device senses more than a certain angle, it will lock the system, need a password to unlock. Including the high-end seven-axis five-linkage turning and milling compound has no GPS, not to mention the subject's low-tech three-axis vertical addition. This is why the purchase of Japanese machine tools, the relocation needs to submit the corresponding relocation procedures to the Japanese machine tool company, and the Japanese machine tool company reports to the Japanese Ministry of Economy, Trade and Industry. If GPS is really installed, the Ministry of Economy, Trade and Industry will not need to spend so much effort on strict scrutiny when exporting.
Second, GPS is only a receiving module, there is no communication function, if you need to communicate, you must use telecommunication network or mobile communication. - Note: Thanks to Ren Yi's comments on children's shoes, he believes that GPS can not need communication functions, as long as there is a built-in chip to determine the location. I think it makes sense, and it should be technically possible. However, the machine tool is installed indoors, and the high-precision equipment may even be alone, and the poor GPS signal has become commonplace, and if the GPS signal is not available during installation, it is a nightmare for the manufacturer. Generally, it must be in a place with a good outdoor signal to be stably positioned, indoor auxiliary positioning needs to be carried out through mobile communication base stations, I personally think that manufacturers will not use the positioning method of no trust communication, the need to verify is very simple, buy a signal jammer can shield the base station communication, the machine tool will definitely not be locked, and the manufacturer will not be stupid enough to rely on this kind of thing. (GPS is not very familiar, please advise).
If it is really a high-tech thing to a certain extent, foreigners will definitely not be allowed to sell it.
Third, most of the GPS is a ...... blown out by salesIt's all about sales skills, which makes you feel how good the manufacturer is ......I've heard Harding, Mazak, Mori, and DMG blow ......In addition, the level and gyroscope are not impossible to crack. The best way is for us to work hard to build a machine tool with better precision and more stability than that of Japan and Germany as soon as possible.