Rough Machining Optimization Of Polygon Plane For Five Axis CNC Stone Bridge Cutting Machine

In order to achieve the rough machining of the five-axis CNC stone bridge cutting machine and optimize the target of the polygonal plane contour area,this paper studies the problem of roughing the polygon plane area of the stone bridge cutting machine according to the concavity and convexity of the polygon contour.Firstly,the polygon information processing method,polygon plane geometry problem and circular saw sawing processing method are studied.First,the polygon information is parsed by searching the DXF file group code and value,and the polyline containing the convexity is processed by the equiangular interpolation method.Furthermore,the vector region is used to represent the polygon region,the vector product method is used to determine the polygon concavity and the vector cross is used to calculate the polygon area.In addition,the angle and method are used to solve the problem of the inner and outer positioning of the polygon.Further,the sawing geometry of the circular saw is studied.The arc-shaped area of the circular saw is used to cut the arc area,the parallel plane is selected to process the polygonal plane area,and the processing path generation algorithm is designed.Then,the problems of interference avoidance,cutting direction optimization and idle stroke optimization involved in convex polygon machining optimization are studied.First,based on the geometric positional relationship between the projection of the sawing arc region and the polygon,the contour offset method is used to calculate the non-interference inner contour.Furthermore,mathematical geometric analysis is used to calculate the direction of the pass with the least number of advances and retreats.Further,the nearest processing algorithm is used to optimize the idle machining stroke.In addition,the correctness of the convex polygon machining optimization method is analyzed by an example.At the same time,the machining efficiency of the circular saw and the grinding wheel is compared,and the superiority of the circular saw in the rough machining process is further verified.Next,combined with the convex polygon processing optimization method,the processing strategy of concave polygon is proposed.According to the characteristics of concave polygon,the concave polygon is subdivided into sub-polygons by using the subdivision algorithm.Further,based on the subdividing auxiliary edge of the subpolygon edge,the processing area optimization method under the interference constraint condition is proposed.In addition,the correctness of the concave polygon machining optimization method is analyzed by an example.Finally,The five-axis simulation machine model was built by VERICUT software to simulate the machining of the polygon plane.Propose a post-processing method for a five-axis bridge cutting machine with a circular saw,and further using the Visual Studio 2013 development platform and C# development language,combined with DotNetBar and OpenGL third-party controls,the integrated control system of “design,simulation and processing” was developed.In addition,the execution steps of the process optimization process are given,and the optimized NC program of convex polygon and concave polygon is generated.Finally,the feasibility of the method is verified on the simulation model.