Development Of Control System Of Five Axes Numerical Control Cutting Machine For Both Columnar And Quadrate Pipe Use

In modern automation process realm, the NC technique is getting more and more extensive application. The NC Flame Pipe Cutting Machine has also got development of a certain extent in this realm, which makes the former traditional technique of pipe cutting get tremendous changes. But the current domestic and international NC pipe cutting machines generally can only cut columnar pipe, there's few machine that can cut intersecting end of quadrate pipe. With the quadrate pipe getting more and more use, it's crying for a kind of roboticized equipment to cut such kind of workpiece in high efficiency and quality.According to the actual instance of quadrate pipe cutting, this paper puts forward a kind of design project of the NC cutting machine that can cut both columnar pipe and quadrate pipe based on the current NC columnar pipe cutting machine and developed its NC system. The control system of this machine uses PMAC motion controller as its kernel, industrial PC as its system support cell, which constitutes modular and extensible open NC system with parallel dual CPU structure. Its software is based on Windows operating system, uses Visual C++6.0 as develop tool and uses the latest Delta Tau Pcomm32PRO Communication Driver instead of old ActiveX Control PTalk to realize the communication between PC and PMAC, which improves stability and speediness of the whole system. This control system can cut intersecting end of quadrate pipe with several familiar intersecting form and can compensate all kinds of machining error, which greatly increased machining precision. This paper introduces the principle of cutting quadrate pipe intersecting end, analyses the machining characteristic of quadrate pipe and brings forward corresponding cutting control method. It also analyses the error in cutting intersecting end of quadrate pipe, advances the method of measuring and compensating, and describes the hardware makeup and software designs of NC system in details. This kind of cutting machine adapts user demands and market change, can greatly increase the process efficiency in related process field, and also have positive meaning for the expansion of pipecutting machine applying field.