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1、大连交通大学 2011 届本科毕业生毕业设计（论文）外文翻译Study on the control system of lathing and welding compound machine toolLi Xiaohui, Wang Su, Xia Caiyun, Zhu Xiaobo, and Liu XiaohuiBeiHang University, Beijing, 100083, ChinaAbstract. Most conventional Computer Numerical Control (CNC) systems are single process method,
2、so one working procedure need several steps to complete. The Combined machining NC system can solve this problem. In this paper, the hardware construction of the lathing and welding compound machine tool control system is studied and the software structure is also discussed.1 IntroductionCombined ma
3、chining now is becoming one of future directions for the machine tools in the world. More and more complicated parts begin to be processed with the com- pound machine tool. Compound machine tool can improve efficiency of production parts with low volume and rich varieties considerably, suitable to p
4、roduce Aeronau- tics & Astronautics parts. In order to solve the problem of large-scale structures welding, a fabrication method, which performing the turning and welding on the same special equipment, is studied in this project. It is improved that it can simplify the manufacture process, improve w
5、elding efficiency, guarantee the welding quality and improve the lifetime. The thin wall pipe lathing and welding compound machine tool is composed of an automation lathing system and an automation welding system. With twins-milling head, the compound machine tool can finish the lathing and weld- in
6、g process of the thin wall pipe and flange with no declamp operation.2 Control System DesignWith the three degree-of-freedom Manipulators and a special clamp, the compound machine tool can realize the thin wall pipe lathing and welding on the same tool with- out a second clamping. The motion model o
7、f the compound machine tool is shown in figure 1.The compound NC machine tool consists of three parts, a CH2010/S 大连交通大学 2011 届本科毕业生毕业设计（论文）外文翻译ONC system made by BUAA as the control system, a corresponding AC motor and a photoelectric encoder as the executive component and the reactive component of
8、 servo system. NC device of the control system compiles of the program and sends order to the servo system, and then the servo system controls the motors movement. In the whole movement process, the photoelectric encoder mounted on the corresponding AC mo- tor detects the displacement and velocity o
9、f the compound machine tool, and this information is feed back to controller by the feedback system. After comparing the actual displacement and velocity with the target value and other information, the controller sends new orders to the corresponding AC motor to produce corresponding movement which
10、 can rectify the movement of the compound machine tool 1. It is a real-time detection, feedback and closed loop control system. The whole control structure of the lathing and welding compound NC machine tool is shown in figure 2.Fig. 1. Motion model of the compound machine tool大连交通大学 2011 届本科毕业生毕业设计
11、（论文）外文翻译Fig. 2. The whole control structure of the machine tool3 Hardware ConstructionsThe hardware part is composed of a CH-2010/S control system, an AMK AC servo module and 8 induction AC servo motors. The CH-2010/S control system is an open controller system which is based on the PC computer and
12、field bus SERCOS technology, and its hardware construction contains two cards, one is the PC main- board card, another is the SERCOS-Master card. NC-PLC kernel operates the SERCOS-Master interface card with SERCOS-Master driver program and the SERCOS-Master card connects with the AMK AC servo module
13、. The AMK AC servo module is used as the control module. The AMK-AZ sends signals to AMK- AW when any numeric control command receives from SERCOS. And then the AMK-AW exports the signals to three phase induction AC servo motors. The hardware construction of the control system is shown in figure 3.大
14、连交通大学 2011 届本科毕业生毕业设计（论文）外文翻译Fig. 3. Hardware construction of control systemThe SERCOS-Master card has the machine tool operation buttons, multiple switch and hand wheel port which are available for all kinds of NC machine tools. The CH-2010/S controls the machine tool control module with the SERCOS
15、-Master card, which is composed of 150 SERCOS feed stages and 40320 PLC-IO ports. The hardware hookup of the control system is shown in Figure 4. In this figure the AW# means AMK servo module, M# means the number of motor, AM# means the coder relative to motor, and SB# indicates located restrictive
16、switch of the machine tool.4 Software ConstructionsAll kinds of resources provided by the WINDOWS operating system can be used conveniently in the CH-2010/S. It offers the software application environment and a group of normal system performance functions to users, such as: 231. The Manipulative Performance, including the manipulative menu, coordinate display, operating states display and graphical display etc.2. Data Management System, including system para
