Analysis of heavy machine tool gaps at home and abroad from manufacturing industry

After years of technological transformation and product development and training in China's heavy-duty machine tool industry, both the production capacity and the product technology level have made great progress, but there are still many shortcomings compared with foreign products. The biggest difference is the technical level and operating speed of the core operating components, product accuracy retention, machine reliability, and the overall level and quality of the machine tool manufacturing process.

1. The reliability of CNC machine tools is a key indicator of the quality of high-end heavy-duty machine tools. At present, the average trouble-free working time of domestic CNC heavy-duty machine tools is no more than 300 hours, while the imported high-grade heavy-duty machine tools have an average trouble-free working time of more than 2000 hours (800 hours international standard), and the precision is highly maintained. The Trouble-Free Working Time (MTBF) is defined as "the ability of a product to perform a specified function under specified conditions and within a specified time period." Emphasize the practical effects of the product on-site use or operation. Therefore, the trouble-free working time of CNC machine tools must objectively reflect the real situation of the fault interval of the product in the production process, which is the product quality attribute that the majority of machine tool users really care about. Obviously, the reliability level of domestic CNC heavy-duty machine tools is significantly lower than that of foreign countries, which seriously affects the competitiveness and market share of domestic CNC heavy-duty machine tools.

2. The geometric accuracy and working precision of domestic CNC machine tools can reach higher than the design standard during the trial production, but the high-precision requirements of the platform cannot be achieved in the batch products. Foreign companies can achieve high-precision production of CNC machine tools through advanced manufacturing process control. Domestic CNC machine tools still have a distance from samples (exhibits) to goods.

3. China's heavy-duty machine tool manufacturing enterprises still lack the ability of independent innovation and basic theoretical research. Applying the latest technology and its newly developed technology to new products in a modular form is also a trend in China's heavy-duty machine tools.

Special attention should be paid to the development of new products: First, in-depth study of the characteristics and requirements of the product technology of the user industry, and the development of high-level processing equipment in combination with the characteristics of the process. The second is to pay attention to the research work of basic theory, strengthen the experimental research of key components, and strengthen the operation test and after-sales tracking service for new products and the first set of complete machines. The third is to strengthen the rectification and improvement of new products, and reduce the time from exhibits to commodities and industrialization.

4. World famous manufacturers of heavy-duty machine tools: WALDRICH-COBURG, SCHIESS, INNSE, PAMA, France-Ferre-Rine Manufacturers such as FOREST-LINE) and SORALUCE have their own well-known products, which have formed world-renowned brands and intangible assets. But they are not all products are produced, what products are well-known, but focus on doing their own special products, relying on quality, relying on credibility, relying on technology to occupy the world.

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