Retrofitting and utilizing old machine tools

At present, there is still a big gap between the overall level of China's enterprise machinery manufacturing and developed countries. Due to the fact that most CNC machine tools and CNC systems in China are dependent on imports, especially for large-scale equipment, enterprises cannot withstand huge purchase fees and are subject to foreign control. In addition, the maintenance power of CNC machinery and equipment is weak, and the cost of imported spare parts is low. High, the equipment is in good condition, most of the imported machine tool numerical control system has collapsed, and some even have not been used after import, it has been used for various reasons and so on. Therefore, at present, the proportion of CNC machine tools in China's enterprises is extremely low, less than 5%. Most of the enterprises use traditional old-fashioned machine tools, which is difficult to meet the production needs and production efficiency of high-tech products. In order to save costs and further exert the efficacy and potential value of old-fashioned traditional machine tools, it is inevitable to transform and utilize a large number of traditional old-fashioned machine tools.

The total number of machine tools in China is more than 3.8 million units, and the total number of CNC machine tools is only 113,400. In the past 10 years, the annual output of CNC machine tools in China is about 0.6-0.8 million units. The annual output of machine tools is 6%, and the annual output value is CNC. The rate of conversion was 12% and the latter two were 31.6% and 75.4% respectively. And the economical CNC machine tools in CNC machine tools account for more than 80%, and there are not many advanced machine tools such as automatic machine tools. More than 60% of China's machine tools have been in service for more than 10 years; less than 20% of automatic/semi-automatic machines are available for machines under 10 years, and there are only a handful of automated production lines such as FMC/FMS, while 60% are automatic and semi-automatic machines in the US and Japan. the above. It can be seen that most of the manufacturing and processing equipment of most of our manufacturing industries and enterprises are traditional machine tools, and more than half of them are old machine tools with a service age of 10 years or longer. Even CNC machine tools, most of which are economical CNC machine tools, are outdated in production equipment and technology. The products processed with this equipment generally have poor quality, low variety, low grade, high cost and long delivery period, so they lack competitiveness in the international and domestic markets, directly affecting a company's products, markets, benefits, and influence. The survival and development of enterprises. Therefore, the transformation and utilization of old machine tools is particularly important.

According to experts' prediction, in the next few years, China's CNC machine tool demand will rise in a straight line. On the one hand, these needs are met by purchasing new equipment. On the other hand, if we make full use of our existing stock assets, replacing and reducing the purchase of new equipment with updated equipment can achieve a multiplier effect.

In addition, compared with the purchase of new machine tools, the use of old machine tools can generally save 60% to 80% of the cost, and the transformation cost is low. Especially for large and special machines, it is especially obvious. Generally, large-scale machine tools are rebuilt, only 1/3 of the cost of new machine tools is purchased, and the delivery time is short. Even in some special cases, such as high-speed spindles, automatic tool changers, and automatic pallet changer manufacturing and installation, it is too laborious and costly. The cost of retrofitting is often increased by 2 to 3 times, which saves investment compared with the purchase of new machine tools. About 50%. The modified machine tool has the same precision and rigidity, and the operator can quickly adapt to the operation and put into full-load production. Because of the adoption of the embedded system, the software upgrade is also very convenient.

In summary, through the current economic and technological situation in China, the transformation and utilization of old-fashioned machine tools has become an urgent matter. So how to change, change those, how to save the most money. It’s even more difficult to put it in front of us, and now it’s just one or more old-fashioned devices on hand. But any problem will have a viable solution, because people's brains are flexible, creativity is great, and when we get one or more old-fashioned devices, the first step we should do is to retrofit old equipment. The feasibility of the project is assessed. This assessment can be an evaluation of the existing machine tool or an evaluation of the machine tool to be purchased, in order to determine whether the machine tool has the value of retrofitting and utilization.

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