Tool-path generating device, tool-path generating method, and non-transitory recording medium storing tool-path generating program

A tool-path generating method comprising:

• a point-sequence-generating step of generating a point sequence that represents a tool path based on a machining program;
• and
• a smoothing step of smoothing the generated point sequence;
• wherein the smoothing step includes
• a step of setting filter lengths that are applied to the points such that a pre/post-smoothing divergence amount of each point in the point sequence is equal to or less than a first threshold, and that the filter lengths are set the largest,
• a step of changing the set filter lengths such that an absolute value of a difference between the filter lengths applied to adjacent points in the point sequence is equal to or less than a second threshold, and
• a step of performing filter processing based on the changed filter lengths.

A non-transitory recording medium storing a tool-path generating program that causes a computer to execute:

• point-sequence generating processing that generates a point sequence that represents a tool path based on a machining program;
• and
• smoothing processing that smooths the generated point sequence;
• wherein the smoothing processing includes
• processing for setting filter lengths that are applied to the points such that a pre/post-smoothing divergence amount of each point in the point sequence is equal to or less than a first threshold, and that the filter lengths are set the largest,
• processing for changing the set filter lengths such that an absolute value of a difference between the filter lengths applied to adjacent points in the point sequence is equal to or less than a second threshold, and
• processing for performing filter processing based on the changed filter lengths.