After the pursuit of high-speed machining and high-speed cutting, CNC machining industry has entered the track of pursuing high-efficiency machining. High efficiency machining does not emphasize the fastest cutting speed or the highest machining quality, but emphasizes the improvement of metal removal rate per unit time, so as to improve the machining efficiency, machining performance and processing efficiency of NC machining. This is the optimization of the whole manufacturing process, so as to achieve a higher output input ratio. Although in recent years, the overall level of China cnc machining industry has improved, but in terms of efficient processing, there is still a large gap between developed countries, mainly in the following aspects.
Lack of independent innovation ability
Compared with the R & D and innovation ability of developed countries, the production of high-efficiency CNC machining equipment in China is still in a low stage, mainly imitation. Moreover, this kind of imitation is only the imitation of the appearance of the equipment, which lacks the internal core functions and advantages. The lack of independent innovation ability leads to the lack of original design ideas, exquisite manufacturing technology and assembly technology. In most cases, it is not really high-performance processing equipment.
High end equipment relies too much on imports
Due to the lack of independent innovation and stable production and operation of high-end and efficient processing equipment, this kind of equipment in China mainly depends on imports. In addition, some developed countries promote each other by sharing knowledge and technology, but impose strict technology blockade on developing countries. As a result, China has to rely on its own strength to develop in the case of low research starting point and late development start time. This is also one of the reasons why the equipment is excessively dependent on imports at this stage.
The level of key functional components is not high
The key components of high efficiency machining equipment, such as lead screw, guide rail, spindle, grating ruler, gear rack, worm gear and worm, also play a key role in the processing. Therefore, it is an important basis to measure whether the high-efficiency processing equipment is really efficient. At present, although these key components can be produced in China, they can not meet the requirements in terms of function, because their core technology is still mastered by developed countries. If it is still maintained in this state, it will be a great constraint for the efficient processing equipment manufacturers in China.
Backward processing and assembly technology
If I get the drawings of foreign advanced equipment in hand, can I produce the equipment with the same quality and function? I’m afraid the answer is No. Because of the gap between processing technology and assembly process, it is difficult for us to meet the requirements of the drawings. Therefore, at this stage, in the production of efficient processing equipment in China’s machinery manufacturing enterprises, it is not only the design problem, but also the processing technology and assembly process. This has these aspects to get all-round progress, in order to really have our high-end equipment independent production capacity.
Lack of basic research
Domestic manufacturing enterprises generally do not pay attention to the reserve of basic research strength, and the R & D strength is insufficient, so it is difficult to provide valuable research results. Long term reference and imitation lead to the further disconnection between its basic theory and practical application, which seriously fails to keep up with the international development trend. There are still many problems in domestic enterprises, such as insufficient attention to professional talents, imperfect talent training mechanism, lack of sustainable development talent competition mechanism, etc., which makes it difficult for those talents with one skill to give full play to their advantages, resulting in brain drain or related technology failure.