TOOL PATH COMPENSATION METHOD AND NUMERICAL CONTROL MACHINE TOOL

摘要

A tool path compensation method and a numerical control machine tool, the method comprising: calculating a first tool compensation path and a second tool compensation path (602); determining a first position on the first tool compensation path and a second positions on the second tool compensation path (603); determining a target tool compensation path (604); determining a first intersection point (605); determining a second intersection point (606); when the length of a connection line between the first intersection point and the second intersection point is not greater than a preset length threshold, determining that the second intersection point is a target intersection point of the first tool compensation path and the second tool compensation path (607); and calculating the tool compensation path of a tool path according to the target intersection point (608). A tangential line, drawn on the tool path compensated by a spiral line, intersects another spiral line, connects another spiral line with the intersection point, and intersects the previous spiral line at another point as a new tangent point for the next iteration; and finally the intersection point of the two tool compensation paths is determined, so that the tool path compensated by the two spiral lines, i.e., the tool compensation path of the tool path can be calculated.