回转工作台的设计与研究方向-毕业论文外文翻译Word文档下载推荐.docx

1、Keywords： rotary table； design and research； new ideas； developments0 IntroductionOn April 11 to 16, 2011, the theme of science and technology innovation to meet the crisis generation of the 12th China international machine tool exhibition （CIMT2011） was held in Beijing. In an economic crisis haze d

2、issipating, slow recovery under the background of international economy, Chinas economy healthy and rapid development pattern, is attracting more and more attention. In this exhibition, the knowledge of machine tools, tools, manufacturing enterprises at home and abroad Gather in Beijing, as the econ

3、omic crisis after the baptism of machinery industry brought a feast full of imagination and creativity of science and technology. Is the exhibition of machine tool accessories exhibition In terms of product, high efficiency, high precision, high reliability, high life still is to develop the theme o

4、f pursuit. As for the machine tool accessories rotary table is no exception. Rotary table is divided into indexing table, and rotary table. Indexing table can only be completed dividing movement, there is no function of feed. Can be used with work as a whole, can also be used alone. Common positioni

5、ng pin and rat tooth plate; Nc rotary table is the ideal matching accessories of all kinds of CNC milling machine and machining center. Turn back to the table design Process includeThe basic types of rotary table s not only the mechanical drive mechanism, and it also involves the mechanical and elec

6、trical control system, the design idea of the two parts as the demand of the market and customers, constantly update and perfect, therefore, the design and research direction of the rotary table directly affect the benefit and the rise and fall of the turntable production enterprises.1 The basic typ

7、es of rotary table1.1 General turntableRotary table is boring machine, drilling machine, milling machine and the slotting machine, and other important accessories, used for processing and there is a requirement for dividing hole, slot and slope, turn the workbench when processing, can be processing

8、arc surface and groove, etc. According to the structure is divided into different levels turntable general turntable, lie the turntable and universal turntable.（1） water flat turntable: on the frustum of a cone with central hole workpiece positioning and clamping with T slots. Mesa engraved with 360

9、 on the outer periphery of uniform scribed line. Mesa between base and a worm pole - worm gear pair, ratio of 90:1 or 120:1, to drive and dividing, worm out from base with dial and segment at the end of the handwheel. Turn the handwheel to drive mesa, and the mesa cylindrical week scale （in degrees）

10、 and subdivision dial readout rotation Angle. Dividing accuracy is commonly + 60 Levels turntable worm out side can also be used coupling connected to machine transmission device, in order to realize the dynamic drive.（2） lie turntable, the base has two perpendicular installation base, make mesa can

11、 be level Also can be vertically.（3） the universal turret: mesa can be within the scope of 0 90 inclined at any Angle, make the workpiece at any Angle of space can be accurately adjusted.1.2 precision turntablePrecision turntable Used for processing or Angle measurement on precision machine tools. C

12、ommon optical turntable, digital display turntable and super precision contrate gear plate of turntable.Optical rotary table: （1） on the spindle is equipped with glass or metal precision dial, the optical system to subdivide scale, amplification, through the eyepiece or screen Angle value.（2） digita

13、l turntable: mounted on the turntable spindle precision circular grating or round inductosyn and display unit by the number of words the Angle value. The above two precision turntable dividing precision up to + / - 1（3） the ultra-precision end tooth disc turntable: use a pair of precision of researc

14、h on 1440, 720 or 360 tooth face tooth disc dividing positioning, the indexing accuracy up to + / - 0.01 ”，make a precise Angle measurement.2 The design parameters and the working principle of rotary tableRotary table design parameters include: rotary table, table size, total table high degree, bearing table, feed speed, turning back to speed range, fast speed rotary speed, electric power, rotary table, dividing precision and measurement system, etc. This study is based on mechanism of shaanxi institute of technology labor