The NC process of large turbine runner blades was successfully developed.

Information and dynamic simplicity is the direction of manufacturing development. The inventor of the programmable logic controller, Molly et al., has just published the general direction of the future development of the manufacturing industry. Before the widespread use of personal computers, programmable logic controllers were a key component in the manufacturing process. They replaced a large number of traditional switches and relays, enabling people to control the production line at the video terminal to adapt to changing needs. Although the development of modern computer software has gradually withdrawn from the market, Molly believes that the essence of his invention is to show people the "simplicity" of design.

Today, factory processing plants are increasingly using computers and other new technologies, but simplifying the manufacturing and use process is still the main direction of various technological improvements.

The author of the book believes that technology development and management personnel should focus on these issues when developing products in the future: first consider the three “ten” rules, that is, when developing any new product, this product must be better than the existing product. 10 times, 10 times cheaper than existing products, or 10 times faster. Secondly, there must be a 7-year payback period, that is, for many technical projects, it takes 7 years from the proposal of principle to a major return. Time, so technology development and management personnel must think about problems in this time frame and arrange the timetable for research and development. Third, we must consider five major factors, to make its manufacturing success, in its work plan, it must be carefully Consider the five major factors of management, marketing, production, capital and technology.

High-precision high-speed prototyping technology using 3D solid model CAD/CAM In the development of new products, each stage needs to evaluate the design prototype. The scope of assessment ranges from product appearance to final functionality. Each evaluation uses a prototype part made by a skilled craftsman who is different from the actual material used.

These parts do not have sufficient precision and physical properties, so the final mold must be used to obtain a satisfactory evaluation. Since the mold needs to be modified, it is difficult to shorten the development cycle. The high-speed, high-precision machining center and 3D solid model CAE/CAM system were used to develop the rapid processing technology of aluminum mold manufacturing and prototype machining. Precision prototype parts made from actual materials can be applied to various short-term evaluations of less modified molds to achieve parallel engineering.

Manufacturing is the largest engine of the US economy The National Manufacturers Association of the United States published a report on the status quo of US manufacturing on January 12, which shows that manufacturing is the number one driving force for US economic growth in the 1990s.

The report said that the achievements of the US manufacturing industry in the 1990s were far greater than in the 1980s.

From 1992 to 1997, 29% of the real GDP growth in the United States came from manufacturing, making manufacturing the sector that contributed the most to US economic growth. In the same period, the service industry contributed 19% to economic growth, 16% and 13% in retail and wholesale industries, 13% in finance, insurance and real estate, and 3.1% in transportation and economy. The average annual growth rate of up to 5 manufacturing is also the main force driving technological progress in the United States. Statistics show that 57% of all research and development investment in the United States comes from manufacturing, with 38% of investment from transportation equipment, electronics and chemistry. Due to the development and adoption of new technologies, the labor productivity of the manufacturing industry itself Improve.

Since 1983, the labor productivity of the manufacturing industry has increased by 3.4% annually. After the 1990s, the labor productivity growth rate of the manufacturing industry has further accelerated. From 1996 to 1999, it exceeded 47%. The increase in labor productivity has further boosted the US economy. The overall growth.

The contribution of manufacturing to US economic growth is also reflected in exports.

From 1992 to 1998, 24% of US economic growth was attributed to the growth of exports.

Among the total exports of the United States, manufacturing exports accounted for 62%. In 1985, only about 7% of the US-produced manufactured goods were exported abroad, and the current ratio is close to 15%. The multiplier effect of the US manufacturing industry, that is, the production activities of intermediate products and services brought about by the manufacturing process, is also significantly larger than other sectors. The final sales per dollar of manufacturing can bring in the production of intermediate products and services of $ 1.19, while the service sector can only bring 77 cents. In addition, sales of manufactured goods for $1 million can support jobs in 10 manufacturing sectors and jobs in 6 other sectors, while labor-intensive services can support 17 services per $1 million in sales. Posts, but only two jobs can be created in departments other than the service industry.

The NC process of large turbine runner blades has been successfully developed. The technicians of Dongfang Electric Machinery Co., Ltd. successfully developed a complete set of large-scale blade CNC machining technology in the main “Basic Research on Key Technologies of the Three Gorges Hydroelectric Generating Sets”. .

"It is one of the key technologies in the power generation equipment manufacturing industry in the world today. The five-coordinate linkage CNC machining technology developed by Dongfang Electric Machinery Co., Ltd." includes the five-coordinate linkage CNC machining of large blades. Data preprocessing system, computer three-dimensional modeling, five-coordinate linkage CNC machining process, five-axis linkage machining technology for five-coordinate linkage CNC machining, cutting simulation for five-coordinate linkage CNC machining, machine tool simulation for five-coordinate linkage CNC machining, post-processing The main key technologies, etc. From the perspective of research and development and technical level, they have already taken the lead in the country and reached the international advanced level.

The promotion and application of this technology has important significance for the manufacture of the Three Gorges unit, the promotion of technological advancement in the turbine industry, and the improvement of the competitiveness of China's hydropower equipment manufacturing industry in the international market. It has broad prospects for promotion.

The new vertical cutting center Taiwan Longfeng Precision Machinery Co., Ltd. recently launched the vertical cutting center model VMC-158.

The body of this kind of cutting center uses high-grade cast iron that has been stress-treated, and the fine-grained industry is built for the purpose of building and Hezhan 3%w.

(Finish)

1. Easy operation and labor saving.One man operation,in and out with an entire carriage,easy and quick.