Algorithm of modification of axes of symmetry of the details set by polylines.

Lyachek Yul., Mustafa Ahmed B.

The features of the description of axial polylines of symmetry of parts of constant width, having a curved shape are considered. An algorithm is proposed for automatic adjustment of their parameters, with automatic modification of drawings when using their grid parametric model. Its implementation is based on the execution of a sequence of operations on the description of each segment of the symmetry polyline of the original dxf drawing file. These automatic operations provide detection of line structure elements, calculating new parameter values for each of its segments, and replacing old values in the dxf-file description with the calculated new values, which saves the designer from the work associated with re-issuing the drawings of modified products.

Keywords:CAD, drawing, grid parametrization, polyline, axis of symmetry, algorithm