外文翻译-高速切削加工的发展及需求.doc

1、毕 业 设 计（论 文）外 文 参 考 资 料 及 译 文译文题目： High-speed machining and demand for the development 高速切削加工的发展及需求 学生姓名： 学 号： 专 业： 所在学院： 指导教师： 职 称： 20xx年 2月 27日High-speed machining and demand for the development High-speed machining is contemporary advanced manufacturing technology an important component of the hi

2、gh-efficiency, High-precision and high surface quality, and other features. This article presents the technical definition of the current state of development of Chinas application fields and the demand situation. High-speed machining is oriented to the 21st century a new high-tech, high-efficiency,

3、 High-precision and high surface quality as a basic feature, in the automobile industry, aerospace, Die Manufacturing and instrumentation industries gained increasingly widespread application, and has made significant technical and economic benefits. contemporary advanced manufacturing technology an

4、 important component part. HSC is to achieve high efficiency of the core technology manufacturers, intensive processes and equipment packaged so that it has a high production efficiency. It can be said that the high-speed machining is an increase in the quantity of equipment significantly improve pr

5、ocessing efficiency essential to the technology. High-speed machining is the major advantages : improve production efficiency, improve accuracy and reduce the processing of cutting resistance. The high-speed machining of meaning, at present there is no uniform understanding, there are generally seve

6、ral points as follows : high cutting speed. usually faster than that of their normal cutting 5 -10 times; machine tool spindle speed high, generally spindle speed in -20000r/min above 10,000 for high-speed cutting; Feed at high velocity, usually 15 -50m/min up to 90m/min; For different cutting mater

7、ials and the wiring used the tool material, high-speed cutting the meaning is not necessarily the same; Cutting process, bladed through frequency (Tooth Passing Frequency) closer to the machine-tool - Workpiece system the dominant natural frequency (Dominant Natural Frequency), can be considered to

8、be high-speed cutting. Visibility high-speed machining is a comprehensive concept. 1992. Germany, the Darmstadt University of Technology, Professor H. Schulz in the 52th on the increase of high-speed cutting for the concept and the scope, as shown in Figure 1. Think different cutting targets, shown

9、in the figure of the transition area (Transition), to be what is commonly called the high-speed cutting, This is also the time of metal cutting process related to the technical staff are looking forward to, or is expected to achieve the cutting speed. High-speed machining of machine tools, knives an

10、d cutting process, and other aspects specific requirements. Several were from the following aspects : high-speed machining technology development status and trends. At this stage, in order to achieve high-speed machining, general wiring with high flexibility of high-speed CNC machine tools, machinin

11、g centers, By using a dedicated high-speed milling, drilling. These equipment in common is : We must also have h igh-speed and high-speed spindle system feeding system, Cutting can be achieved in high-speed process. High-speed cutting with the traditional cutting the biggest difference is that Machi

12、ne-tool-workpiece the dynamic characteristics of cutting performance is stronger influence. In the system, the machine spindle stiffness, grip or form, a long knife set, spindle Broach, torque tool set, Performance high-speed impact are important factors. In the high-speed cutting, material removal

13、rate (Metal Removal Rate, MRR), unit time that the material was removed volume, usually based on the machine-tool-workpiece whether Processing System chatter. Therefore, in order to satisfy the high-speed machining needs, we must first improve the static and dynamic stiffness of machine spindle is p

14、articularly the stiffness characteristics. HSC reason at this stage to be successful, a very crucial factor is the dynamic characteristics of the master and processing capability. In order to better describe the machine spindle stiffness characteristics of the project presented new dimensionless par

15、ameter - DN value, used for the evaluation of the machine tool spindle structure on the high-speed machining of adaptability. DN value of the so-called axis diameter per minute speed with the product. The newly developed spindle machining center DN values have been great over one million. To reduce the weight bearing, but also with an array of steel products than to the much more light ceramic ball bearings; Bearing Lubrication most impressive manner mixed with oil lubrication methods. In the field of high-speed machining. have air b