单螺杆机床论文中英文对照资料外文翻译文献文档格式.docx

1、Decide the size of the compressor displacement of the stars round, screw diameter, mesh size and the size of the center distance, so different in diameter screw, machine tool spindle and the rotary center are also different. To meet the processing of different diameter screw, single screw Currently

2、the layout of machine tools in general there are several options. The first is: machine tool rotary tool spindle center and the center distance for the fixed Machine tool rotary tool spindle center and the center distance for the fixed, can not adjust the center distance. Processing of several of th

3、e screw diameter on the center distance required several different specifications of the machine. Advantages: simple structure of the machine. Disadvantage: each machine can only process a specification of the screw, when the market on a certain specification requirements when the screw compressor,

4、resulting in a machine, other machine idle. The second: the machine tool spindle box for rotary Processing screw machine according to the size of the diameter at the processing before a point of rotating spindle box. Spindle box that the machine can turn on a machine at the above-mentioned article o

5、n the use of the improvements, with the first structure of a machine tool is basically the same. the structure of machine tool easy to adapt to a variety of specifications of the processing screw. One disadvantage: after the rotating spindle box and the tool spindle turning center line distance betw

6、een the center line of accurate measurement difficult. 2 disadvantage: after the rotating spindle spindle box and the front surface of the rotary cutter centerline distance between the reduction of the larger diameter of the screw processing is limited. The third: the machine tool spindle box for ho

7、rizontal mobile Box at the bottom of the spindle and the base there is arranged between the rectangular sliding rail, spindle box perpendicular to the direction of movement of spindle centerline and perpendicular to the centerline of the tool rotation. Through the power of the spindle box spline sha

8、ft to the base of the tool feed mechanism. Screw diameter, according to the size of the processing in the processing of the previous round by hand to the body put into the screw spindle box moved to the appropriate location, and then screw the spindle box on a fixed base. Spindle box available from

9、the mobile Grating detection, position error 0.005mm. Horizontal spindle box can be used as a mobile machine can process diameter 95 385mm any kind between the screw specifications. 95 385mm processing because of the diameter of the screw, causing the front surface and the tool spindle rotation the

10、distance between the center line of the margin is too large, the actual application in the design specifications of the machine into two, a 95 205mm machine screw diameter Another 180 385mm machine screw diameter. a variety of tools to adapt to the specifications of the processing screw, each screw

11、specifications need not be provided with the appropriate machine tools. the structure of machine tools and machine tool assembly of the two kinds of more complex machine tools, machine tools than the cost of two kinds of machine tools before the high. Second, introduce the structure of machine tool

12、spindle The level of machine tool spindle box on the main axis and the base of the vertical axis determines the degree of precision was the precision screw machining, at the same time screw compressor at a speed of thousands of high-speed rotary switch, the accuracy of the screw will be less so that

13、 the compressor have a fever, vibration, low efficiency, such as wear and tear situation quickly. Currently available single-screw machine spindle structure of the program has the following two. bearing radial clearance is not adjustable spindle structure Before spindle bearing out the use of one pa

14、irs of cylindrical roller bearings and thrust ball bearing combination of both, the main use of double row cylindrical roller bearings under radial cutting force, the use of two ball bearings to bear axial thrust cutting force. After the general adoption of the spindle bearings out one pairs of cyli

15、ndrical roller bearings or a ball bearing to the heart. Main advantages of this structure: the main axis of the processing and assembly of simple, low cost. because the main axis of the radial bearing clearance can not be adjusted so poor precision spindle. Although the use of bearings and shaft dia

16、meter fit to eliminate the radial bearing clearance, but each bearing diameter and radial clearance is not a fixed value, so it is difficult to design and processing to the quasi-axial-radial and bearings with bore tolerances. it is very difficult to buy in the market of domestically produced or imp

17、orted, C, D or P4, P5 class thrust ball bearings, machine tool manufacturing plant commonly used alternative to the use of ordinary class bearings, which also affected the accuracy of the enhance spindle. Bearing radial clearance adjustable spindle structure do not apply to the general accuracy of t

18、he general machine tools, does not apply to require a higher accuracy of the spindle of machine tools. the radial bearing clearance adjustable spindle structure Before the adoption of a spindle bearing P4 class of double row tapered hole cylindrical roller bearings and a P4-class double row ball bea

19、ring thrust to the combination of heart. The use of the spindle hole of the double row tapered cylindrical roller bearings under radial cutting force, the use of double row ball bearing thrust to the heart to bear part of the axial and radial cutting force cutting force. Spindle bearings generally u

20、sed after a P5 class of double row tapered hole cylindrical roller bearings. Double row tapered hole cylindrical roller bearings with inner ring and shaft are tapered 1:12, bearing lock nut with a round led a bearing in the axial displacement of the inner ring bearings and expansion, to reduce or el

21、iminate Bearing radial clearance purposes. Main structure of such advantages: high precision spindle. At the front spindle diameter 230mm noodle on the end measuring spindle Beat value of 0.010mm. 230mm cylindrical spindle at the front end on the radial axis measurement value of Beat 0.005mm. The se

22、cond structure of the spindle of a precision spindle accuracy than the first about 50% improve. Main disadvantage of this structure: The principal axis of the more complicated process, the spindle assembly also has the experience necessary to make the workers to operate the spindle achieve the desir

23、ed numerical accuracy. Third, the depth of the tool feed control Required different processing screw diameter spiral groove depth is also different from the depth of the spiral groove mm from dozens to more than 100 millimeters range around the tool into the institutions required to feed the thousan

24、ds of ring rotation in order to achieve a screw machining . Feed because of the tool in the tool rotating at the same time achieve motion feed, so on a number of general machine tools used in mechanical, electrical control method of depth of cut does not apply to single-screw machine. Single screw m

25、achine tools give agencies into the following different methods can be feed to control the depth of purpose. friction clutch and electrical switches to control the depth of the tool feed Its principle is to control depth of cut increases the tool cutter feed mechanism increases the load torque so th

26、at the tool feeding mechanism of the friction transmission chain slipping clutch, a mechanical linkage concurrent silent trigger electrical switches, optical signal prompted operator, when manual operator to disconnect the tool into the power sector. The advantages of this control method are: the co

27、ntrol method is simple and spare parts processing and operational power from the impact of a sudden. Disadvantage are: processing of different diameter screw to adjust the clutch friction discs pressed the preload spring. Material because of the density of each screw, and the hardness of the existen

28、ce of subtle differences in the degree of cutting tools sharp differences exist, thus the accuracy of this control method was not too accurate, may lead to screw spiral groove depth tolerance is too large. use of an electromagnetic clutch, encoder control tool into the mix to the depth of Tool feed

29、system, equipped with electromagnetic clutch and a tool for detecting the number of rotating ring gear and a gun encoder. It is a tool of control principle hand screw surface encoder to start counting switch, then start counting counting device, when the rotary tool to pre-set number of laps when th

30、e cutting depth is reached, the electromagnetic clutch automatic off open to the power tool into the concurrent silent, optical signal parts prompted the operator has finished processing. The detection device through the digital display shows the number of feed circles or feed. Torn off and the electromagnetic clutch, the tool does not only into the rotation with the vertical shaft to the sport. the depth of the spiral groove screw toleranc