1results about How to "Elimination speed" patented technology

The application discloses a high-precision global fitting method and device based on dominant points, relates to the technical field of computer numerical control machining, and specifically comprises the following implementation steps: firstly, taking the cubic polynomial fitting error as the core basis, dominant points in a tool tip point set are adaptively screened; secondly, according to a point error constraint condition, part of the tool tip points are supplemented as new dominant points through an iterative mode, and then an initial B-spline curve is generated; finally, based on a chord error constraint criterion, part of the midpoints of straight line segments are iteratively supplemented as dominant points, and finally, a target B-spline curve is constructed. The global fitting method effectively optimizes the continuity of the path and the degree of restoration of geometric characteristics under the premise of strictly guaranteeing machining precision, provides a high-quality data basis and technical support for subsequent feed speed planning, and is favorable for improving the overall machining efficiency.