The invention discloses a space variable-
radius spherical domain division method for orthodontic arch wire bending
sequence planning, and relates to the technical field of orthodontic arch wire bending. The space variable-
radius spherical domain division method for orthodontic arch wire bending
sequence planning is established according to a personalized orthodontic arch wire curve of a patient, based on an orthodontic arch wire curve bending point information set and a bending point
robot bending information set, and in combination with the movement characteristics of a
robot bending orthodontic arch wire. The technical key points are as follows: variable-
radius spherical domain division data is imported; the upper
limit value of a spherical domain limiting parameter is set; the radius and the sphere center of a divided spherical domain are determined; a reasonable bending spherical domain is defined; whether spherical domain division is continued or not is judged; and with the density of spherical domain bending points as an index, all spherical domains are arranged in a descending order, the bending
point sequence of the spherical domains is specified, and the final bending point bending sequences T1 and R1 are output. According to the method, the space arch wire curve is divided into regions by the variable-radius spherical domains, so that the accuracy of
orthodontic archwire bending planning can be improved, and the problem of interference in the process of bending the orthodontic arch wire by the
robot is avoided.