China has been using FTL since the late 1990s. At present, more than a dozen FTLs have been put into use in the automotive industry, especially Shanghai General Motors Co., Ltd. is a world-class level. The greater significance of using FTL is that it breaks the traditional economic scale of automobile production. China's automotive industry has invested in several of the main technical indicators of high-speed machining centers in FTL. The main structural features of the high-speed machining center: high-speed machining center requires high feed speed, high acceleration, high spindle speed, and is used for high-precision car parts processing. High precision and high rigidity are the most important features. The high-speed machining center produced by the European Community has a standard positioning accuracy of 8 spells m and a repeatability of 4 spells m (VDI standard). Research by the Department of Mechanical Engineering at Achen University in Germany shows that under the same volume conditions, the quality of polymer concrete is only 1/3 of that of cast iron. This is more suitable for the requirements of high speed and high acceleration. Experiments by Japan's MAZAK show that when the spindle speed is increased from 22ooor/min to 25000/min (the corresponding speed-up time is increased from 1.5 to 3.3), the cutting efficiency is improved by nearly 40 writes. Cutting efficiency has increased by only 8%, but machine tool costs have increased significantly. Therefore, increasing the speed has become a major contradiction. The column and the base adopt a gantry frame structure. The key components of the high-speed machining center: the high-speed machining center's rapid feed mechanism, currently using high-speed ball screw or linear motor. Compared with high-speed ball screws, linear motors have great potential for development. Example of processing mold parts High-speed milling and high-speed machining centers for mold industry require a maximum spindle speed of 20000r/min or more. At present, most of the industrial use of aluminum alloy parts of 20000r/min-40000r/min uses high-speed milling and high-speed machining centers to improve cutting efficiency and ensure consistent surface roughness. It has reached 40,000r/small in foreign countries, has great rigidity potential, simple structure, low cost, and features of shaft-linked surface processing. It has great potential for processing molds and belongs to the next generation of mold technology equipment. The key component of this type of high-speed machining center is the electric spindle. Spindle Power (kw) American Boem Company uses high-speed machining of integral aluminum alloy parts instead of traditional assembly processes. Received the dual effect of shortening the manufacturing cycle and improving the performance of the aircraft. When manufacturing the F/A-18E/F aircraft, the length of the aircraft is increased by 25% and the number of parts is reduced by 42% compared with the old model. And improve fuel efficiency, easier to repair. The main structural features of high-speed machining centers characterized by high spindle speeds are as described above. These high-speed machining centers mainly require high speeds and do not necessarily require three highs. Therefore, the electric spindle can be selectively selected by a common machining center. The advantage is that the price is low, and it can also be used as a common machining center (the electric spindle is a replaceable part at this time). Suitable for situations where mold processing requirements are not too high. However, in the processing of advanced molds, it is best to use a specially designed high-speed machining center, which is of course higher in price. They generally have high precision, fast feed rate and acceleration, so the main structural features of the machine are similar to high-speed machining centers. (Finish) Flat die homemade Wood Pellet Machine is an ideal pelletizing machine mainly used for small-scale wood pellets production for home heating. It can press 6-8mm diameter biomass fuel pellet, The raw material that can be used for making pellets as follows: Coarse fiber like wood sawdust, agricultural stalk and other biomass for burning. Pellet Mill Machine,Flat Die Wood Pellet Machine,Flat Die Wood Pellet Mill,Pellet Press Machine Shandong Kingoro Machinery Co., Ltd , https://www.kingoromachine.com
Practical analysis of high-speed manufacturing stations in China