数控车床的发展现状外文文献翻译、中英文翻译、外文翻译.docx

Development of numerical control lathe CNC machine tool is a mechanical, electrical, hydraulic, pneumatic, microelectronics and information technology as one of a number of mechatronic products. Mechanical manufacturing equipment with high precision, high efficiency, high automation and high flexible machine tools and other benefits. The level of CNC machine tool technology and metal cutting machine tools in production and the total percentage of ownership is a measure of a countrys overall economic development and industrial manufacturing is one important indicator. CNC lathe is one of the major species, it occupies a very important numerical control machine tool position for decades has been great attention around the world and has been developed rapidly. China CNC lathe from the early 20th century, 70 to enter the market, so far through the tireless efforts of the major machine tool manufacturers, through the adoption of well-known machine tool manufacturers with foreign cooperation, joint ventures, technology transfer, sample digestion and absorption of other measures, so Chinas machine tool manufacturing levels greatly improved, the production of metal cutting machine tools in a large proportion. Currently, the varieties of domestic CNC lathe, a more complete specifications, quality, stable and reliable, and comprehensive development has entered a practical stage. According to different market positioning and demand, CNC lathe CNC lathe can be divided into the economy, and full-featured CNC lathe. 1. Bed and rail (1) bed Of machine is the basis for supporting the entire machine tool parts, machine tool main body is generally used to place the guide, spindle boxes and other important parts. The structure of the machine tool bed layout has a great influence. In accordance with the bed rail surface and the horizontal relative position of bed with five kinds of layout forms: after oblique bed - ramp skateboard; vertical bed - vertical slide; flat bed - sm