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当前位置:网站美女AV > 英语毕业论文 > 英语翻译论文 > 中等压力润滑泵的设计外文翻译

中等压力润滑泵的设计外文翻译

    作者:新论文网    [ 2013-10-30 14:08:42 ]

 【字体: (右键暂停)    

Summary of automatic cutting machine

With the development of auto industry, the life of the production everywhere the automation equipment of different types. In today's industry, sheet metal pipe cutting is finished the most important step in the process of. Is the important process to guarantee the quality of the finished product. Cutting the use of advanced modern technology, not only can ensure the quality of products, improve labor productivity, but also makes the cost of manufacturing enterprise product decreased greatly, shorten the production cycle of the product. With the extensive application of new products, new technology, new technology. Comprehensive books, network etc., foreign materials, mainly by the following aspects:

A, PLC development trend

At present, foreign PLC manufacturers continue to launch new products. The initial launch of Siemens S5 series, and then launched S7 series; Mitsubishi F series began, FX series, is now the A series (A1, A2, A2X). The big trend is more and more powerful, more integrated, network function is more and more strong. Especially the network, because the network is a big trend.

Now all kinds of PLC in the development of their own network, generally from the structure has two kinds, one kind of made a communication output on the PLC module, can be directly connected with the computer to realize point to point communication (RS232 connection); another is through multipoint connection (RS485), which is suitable for multilayer PLC. In this regard, Siemens products representative, has its own PROFIBUS network protocol standards, has now been most countries in the world to accept, has almost become an international standard, widely used. At present, the network is a development trend. Control center network generally has two computers, connected by cable and the PLC stations, each station is put in the vicinity of the controlled equipment, from the device to the cable between PLC stations is very short, from the PLC station to control center needs only one cable, so the cost is greatly reduced.

The latest developments in two, PLC

One is the development of PLC network technology, there are two trends, on one hand, PLC network system is no longer the closed systems, but quickly to the open system development, each big brand PLC in addition to PLC network system to form their own, complete equipment control tasks, but also with the host the computer network management system, to achieve information exchange, to become a part of the whole management information system. On the other hand, fieldbus technology is widely used, PLC and other intelligent devices installed in the field, such as the intelligent instrument, intelligent sensor, intelligent electromagnetic valve, actuator, through a transmission medium (such as twisted pair, coaxial cable, optical cable) connected, and in accordance with the same the communication protocol of mutual transmission of information, thereby forming a field industrial control network, the network compared with the PLC remote network simplex, configuration is more flexible, expansion is more convenient, lower cost, better ratio of performance to price, but also more open significance.

Two is a PLC to the development of high performance and compact. The PLC function is more and more abundant, but the volume is smaller and smaller. Such as Mitsubishi FX-ON series PLC, the smallest model, the volume is only 60 * 90 * 70mm, the equivalent of a relay, but has the high speed counter, slope, alternating output and 16 of four computing ability, also has the adjustable potentiometer time setting function. PLC is no longer the early that switch logic products, but with the analog processing ability is more and more strong, as well as other past only on a computer with advanced processing capabilities, such as floating point arithmetic, PID control, temperature control, precise positioning, stepper drive, reports and statistics. In this sense, PLC system and DCS (distributed control system) the difference is smaller. PLC can also form a process control system.

Three, foreign development status of cutting machine

Foreign manufacturing cutting machine or have a cutting machine technology: Xiboliesi (SIPOREX) company, and Loucks (DUROX) company, Yitong (YTONG), Ji Daima (STEMA) Company Ltd., Minami L (HEBEL) company, Dawes Teng (DORSTENER) company, we (Vv3EHRHAHN) company, the company, Nepal (UNIPOL) hotten (HETEN), etc.. By cutting the attitude can be divided into two categories: 1, to maintain the level of state casting hardening for cutting. 2, the bad body turned 90. Side cut up. The former is slporex (SLPOREX) technology, and Loucks (DUROX) technology, Minami L (HEBEL) technology, the Nepal (UNIPOL) technology, Ji Daima (STEMA) technique, we first generation (WEHRHAHN) technology; the latter is Yitong (YTONG) technology, complete imitation YTONG Dawes Teng (DORSTENER) technology and YTONG technology are simplified and change hotten (HETEN) technology. In addition, there will be combined with the Chinese ground inversion technology and YTONG technology into the headman (WF.HRHAHN) the second generation technology of [1].

Four, the domestic development situation of cutting machine

In today's industry, sheet metal cutting is finished the most important step in the process of. Is the important process to guarantee the quality of the finished product. Cutting the use of advanced modern technology, not only can ensure the quality of products, improve labor productivity, but also makes the cost of manufacturing enterprise product decreased greatly, shorten the production cycle of the product. With the extensive application of new products, new technology, new technology. Intelligent precision cutting will become the future development trend of cutting industry. Our cutting industry is mainly composed of the following types of production enterprises (1) gantry cutting machines; (2) the trolley type cutting machine and a cutting nozzle; (3) plasma cutting power and cutting nozzle; (4) the manual welding torch and welding nozzle. Cutting industry after decades of development, its products from a single manual cutting torch to develop into a complete industry. Products can basically meet the needs of the domestic market, and some products have entered the international market. In recent years, the development of machine manufacturing technology in China CNC cutting more quickly. Modern profiling cutting in CNC cutting machine, because only this way of NC cutting, can effectively guarantee the cutting in the process of fully automated processes. China's CNC cutting technology development relatively late, but its development speed is very fast. In the eighty years ago, in our country, under the sheet material is based on manual or semi-automatic car-based cutting. In eighty years, with the deepening of enterprise reform, people realized; the use of advanced cutting technology, not only is the key to ensure the quality of the products, but also makes the plate utilization greatly increases the rate of. In some enterprises large sheet amount, the plate utilization rate of increase, reduce equipment investment recovery period of CNC cutting machine, and achieved good economic benefit. Therefore, CNC cutting machine market demand increased year by year. In order to promote the rapid development of our country's cutting industry. At present, various types of CNC cutting machine, the production of domestic enterprises, can meet the needs of domestic industry, and a certain amount of exports. Compared with eighty years, when the large precision CNC domestic cutting machine, mainly rely on imports. Since ninety time, imports showed a downward trend year by year. At present, China's imports of CNC cutting machine, mainly some more advanced technology products. As a large underwater plasma cutting machine, fine plasma cutting machine and laser cutting machine, imports in China accounted for only 10% of the total cutting machine market. Since entering the new century, cutting industry also has a new development, the original NC China's exports of cutting machine mainly sold to some developing countries. Exports of other domestic cutting machine manufacturing enterprise product also gradually increase, which also marks the level of manufacturing cutting machine cutting industry in China has reached a new level.

Five, summary

At present, with the needs of production and life, the programmable control system in all aspects of extensive application. Automatic cutting machine and the traditional manual cutting machine compared to more accurate, more convenient operation, higher safety coefficient. Various types of CNC cutting machine production enterprises, can meet the needs of domestic industry.

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