Research On Processing Path Control Software For Special WEDM Machine Tool For Diamond Woodworking Milling Cutter

At present, diamond moulding milling cutter for floor board has been widely used in machining strengthened compound wooden floor board. However, there aren't special equipment which is suitable for processing diamond moulding milling cutter for floor board in the homeland, the price of import equipment of the same type is about RMB three millions yuan, the domestic small-and-medium-size floorboard-working enterprises have difficulties in accepting this price.In this case, a kind of WEMD machine tool which is suitable for processing diamond moulding milling cutter for floor board will be developed in this paper. According to the processing requirements of diamond moulding milling cutter for floor board, this equipment need five NC-axes, and is capable of processing tapered workpiece or different top and bottom shapes workpiece. PC + motion control card is very popularly at present, this structural style was applied in the control system of this equipment, this paper mainly researched on CNC system software of the Upper computer. This CNC system software was designed based on the Windows operating system, the object-oriented programming language C++ and the Visual C++6.0 SDK of Microsoft Corporation were used in the development of CNC system software.This paper introduced the status of domestic and foreign research on control system of WEMD machine tool, comprehensively reviewed on its trend of development, summarized open CNC system which based on the PC and its merits. According to the processing requirements of this equipment and the processing characteristics of WEDM machine tool, this paper analyzed the functions which the control system of this equipment must have. The motion control card of this control system was chosen reasonably and the functions which the CNC system software of the Upper computer must have were studied. This paper analyzed the control method's characteristic of the domestic WEDM machine tool when them was applied to processing tapered workpiece or different top and bottom shapes workpiece. After being detailedly studied, "double surface path direct interpolation control method" was adopted while processing tapered workpiece or different top or bottom shapes workpiece. All kinds of joint type in the C function tool radius offset have been studied, and all joint vectors have been worked out. This paper analyzed the characteristics of programming windows, studied the multithreading technology preemptive multitasking in windows. Classifications of decoding were introduced, and the decoding module was designed in this paper. After decoding result was stored in a chain table, according to the data which in nodes of chain table, the library functions of motion control card would be called to control the movement of electromotors.