1、毕 业 设 计（论 文）外 文 参 考 资 料 及 译 文译文题目： Application of flexible manufacturing technology in tractor box parts manufacturing process 箱体零件的柔性制造技术在拖拉机制造中的应用学生姓名： 学号： 专业： 所在学院： 指导教师： 职称： 20xx年 02 月 25 日Application of flexible manufacturing technology in tractor box parts manufacturing processFlexible manufac
2、turing technology of 1 foreign box parts1.1 flexible automatic lineTo adapt to the production of many varieties, in the early 80 century, developed a flexible automatic line (FTL) (see Figure 1). This type of automatic line is flow and connected through automation according to a certain direction of
3、 the workpiece by multiple CNC automatic processing station. In numerical control machining position of specific processing tasks can choose different types of numerical control processing module and the processing module according to the CNC CNC axes, uniaxial, biaxial and triaxial control; accordi
4、ng to the number of spindle, single spindle and multi spindle machining module. Because these modules are CNC, therefore, when the automatic line workpieces by processing of such species conversion is another variety of the workpiece, by changing the NC program to realize the automatic tool change a
5、nd automatic replacement of multi spindle box and automatically change the stroke process, cycle work, cutting parameters and machining position, in order to adapt to processing of variant species.For processing automobile cylinder block, cylinder head and the gearbox and other body parts of flexibl
6、e automatic production line, CNC three axis machining module and turret multi axis processing module is the most commonly used modules. The two processing module, not only can be used to implement different varieties of workpiece processing and when the automatic line takt time is long enough, this
7、kind of processing module can also in the same position on the processing by the automatic tool change or change box in order to achieve multi-channel processes (such as the rough boring, semi fine boring and fine boring; drilling, reaming and tapping, thereby reducing line automatic processing numb
8、er, shorten the length of the automatic line. In addition, moving column type CNC three axis machining module can also use X and Y axis linkage to achieve peripheral milling process, especially in the milling like aluminum alloy gear box the poor rigidity of the workpiece, the smaller diameter of cu
9、tter milling at a high cutting speed (2500m / min) thereby reducing the processing of cutting force and workpiece deformation.1.2 flexible production line consisting of high speed machining centersAt present, like automobile engine cylinder block, cylinder head and gear box the box pieces, not only
10、varieties increased and in 6 to 8 years often will be replaced by the new varieties of workpiece. In the medium and large volume production, not only strong demand production equipment should not only to adapt to many varieties of workpiece processing has been determined, and even requested the equi
11、pment can adapt has yet to be determined in the future to be the development of variant species of processing. Obviously, flexible automatic line due to its structural flaws, it is difficult to do such production tasks.Since 1993, the appeared composed of high-speed machining center and flexible pro
12、duction line, because it has a high production efficiency, high machining flexibility and ability to flexible, so can meet the needs of the current processing tasks, can also through the adjustment of the equipment or extended to adapt to future processing task. Therefore, increasingly, the flexible
13、 production line, mass production enterprises used.Flexible production line is a kind of automatic lines and flexible manufacturing systems (FMS) hybrid production system features. This production line is composed of a plurality of Taiwan has a complementary and mutual function for high speed machin
14、ing center connected by transmission system transmission in a certain direction of the workpiece. The production line is to use directional transport of material flow, so that the workpiece conveying system is very simple, often can use rolling conveying bring the workpiece to achieve the continuous
15、 conveyor, and the conveyor system can be up to the middle of the workpiece storage function, so it is to improve the utilization rate of the machine tool. Flexible production line in the process arrangement, usually is to allocate processing using the automatic line of traditional processing method
16、, a processing center in a production line is according to the predetermined process and flow direction are sequentially arranged, and in each processing unit of at least two Taiwan industry and Trade Center for parallel processing (the same processing task completion). So, compared with the flexibl
