Research On The NC Machine For Ship Models

The ship model is an important tool for forecasting the sailing capability of its real prototype; it also acts as an important role in the ship research and teaching courses. With the continuous development in technologies of design and manufacture of ships, the process of ship model manufacturing puts higher demands on its method and equipments. Advanced manufacturing technologies should be introduce into the field of ship model shaping, and replace the traditional handcraft method. This dissertation makes an analysis of the actuality and the trend of the ship/mode manufacturing, Based on this, it put forwards a kind of control system of Numerical Control (NC) machine for ship models.In this dissertation, firstly, an analysis is given on the characteristics of the ship model drawings and the manufacture process of wood ship models. The technique parameters, the gross design scheme and the key techniques of the HCM01 mode NC machine for ship models are introduced here.Secondly, this dissertation describes the gross frame of the mechanism, and narrates the designing of the main parts briefly.Thirdly, the dissertation designs the control system of the NC machine for ship models. For the part of hardware, it designs and determines the models of the main electric elements according to the importance degree, which includes the Industrial Computer, the Motion Control Card, the Frequency Conversion System of the Principal Axis, the Step Motor System and the Servo Motor System, here it also gives a compare between the Step Motor System and the Servo Motor System. For the part of software, the dissertation expatiates the flow of data pretreatment, sculpting, CAM, CNC machining for the ship model, and designs the sub-modules that realize the total functions according to the flow chart, the keystone is focused on the ship model sculpting method based on the secondary development function of Unigraphics.As the keystone of the whole work, this dissertation designs the hardware connection between the motion control card and the Industrial Computer, the control system of motors. In the meanwhile, it gives the development of NC machining system for ship model, which is based on the motion control card. The dissertation emphasizes the reality of the control of single-axis, the distinguishing and treatment method of G code, and the multi-axis simultaneous movement control, it also gives the detailed source code.