Plane grid model size adjusting method capable of keeping chamfer characteristics

The invention provides a method for adjusting the size of a planar mesh model capable of keeping chamfer characteristics. The method comprises the following steps: S1, inputting the planar mesh model; s2, plane information of two adjacent planes P1 and P2 forming a chamfer with the to-be-moved plane P0 is extracted; s3, according to the extracted plane information, establishing coordinate systems x0y0z0 and x1y1z1 according to a right-hand rule; s4, determining a to-be-moved grid node area based on the established coordinate system; s5, completing the movement of all nodes in the grid node area by adopting a node movement slicing method; and S6, after the coordinates of all the nodes to be moved are updated, outputting the adjusted planar grid model. According to the method, the nodes in the adjacent area of the plane can be moved through a slicing method, the plane size can be quickly adjusted, and the plane position does not need to be modified in three-dimensional modeling software and then grids do not ne