Computer-assisted manufacturing method for a tooth replacement part or a dental auxiliary element

Abstract

The invention relates to a method for the computer-assisted manufacturing of a dental replacement part or a dental auxiliary element from a blank, which can be rotated about an axis of rotation, by means of a machining tool, wherein a blank data set comprising the axis of rotation and a model data set of the dental replacement part or dental auxiliary element are stored and the model data set has a first region having a first insertion axis and a second region having a second insertion axis askew to the first insertion axis, wherein in a first positioning step (S1) the model data set is arranged in the blank data set in such a way that the first insertion axis of the model data set is oriented perpendicular to the axis of rotation of the blank data set and in a second positioning step (S2) the second insertion axis of the model data set is oriented perpendicular to the axis of rotation of the blank data set by rotating the model data set about the first insertion axis.

Claims

1. A method for the computer-assisted manufacturing of a dental replacement part or a dental auxiliary element by means of a machining tool, the method comprising the steps of: machining the dental replacement part or the auxiliary element from a blank by means of at least one tool of the machining tool, clamping the blank in the machining tool in such a way that said blank is rotatable about an axis of rotation, which extends perpendicular to a feed axis of the at least one tool, storing a three-dimensional blank data record, corresponding to the blank and comprising the axis of rotation, storing a three-dimensional model data record of the dental replacement part to be manufactured or the dental auxiliary element to be manufactured, wherein the three-dimensional model data record comprises a first area with a first axis of insertion and a second area with a second axis of insertion, aligning the first axis of insertion and the second axis of insertion with respect to one another in a skewed manner, arranging the three-dimensional model data record in the three-dimensional blank data record in at least two positioning steps (S1, S2); and a result is provided as a position data record of the machining tool, wherein the machining tool of the tooth replacement part or the dental auxiliary element is machined from the blank in accordance with the position data record, wherein the first positioning step (S1), the first axis of insertion of the model data record is aligned perpendicular to the axis of rotation of the blank data record, wherein the second positioning step (S2) following the first positioning step (S1), the second axis of insertion of the model data record is aligned perpendicular to the axis of rotation of the blank data record by rotating the model data record about the first axis of insertion.

2. The method according to claim 1, further comprising a third positioning step (S3) following the second positioning step (S2), wherein the three-dimensional model data record is shifted relative to the the axis of rotation within the dimensional blank data record and/or is rotated about the axis of rotation so far that the three-dimensional model data record is completely arranged within the three-dimensional blank data record.

3. The method according to claim 2, wherein after the third positioning step (S3), the method further comprises the step of checking whether the three-dimensional model data record protrudes from the three-dimensional blank data record; and, if the three-dimensional model data record protrudes from the three-dimensional blank data record, an error message is generated.

4. The method according to claim 1, wherein for each positioning step (S1, S2) the model data record is arranged completely within the blank data record.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Exemplary embodiments of the invention are shown in the drawings. The drawings show in

(2) FIG. 1 a model data record of a multi-membered dental replacement part with axes of insertion that are skewed with respect to one another,

(3) FIG. 2 a blank data record,

(4) FIG. 3 a schematic representation of the process steps.

DETAILED DESCRIPTION OF THE INVENTION

(5) FIG. 1 shows in schematic form a model data record 1 of a dental replacement part that is to be manufactured. The model data record 1 comprises a first area 4 with a first axis of insertion 5 and a second area 6 with a second axis of insertion 7, wherein this case the first axis of insertion 5 and the second axis of insertion 7 extend so as to be skewed with respect to one another.

(6) The model data record 1 could also correspond to an aligner that is to be manufactured. A model data record 1 of a drilling template (not shown) to be manufactured would comprise a first passage opening, extending along the first axis of insertion 5, and a second passage opening, extending along the second axis of insertion 7.

(7) The following explanations regarding the dental replacement part also apply correspondingly to a dental auxiliary element such as, for example, an aligner or a drilling template.

(8) FIG. 2 shows a blank data record 8 of a blank that is to be used for the manufacturing of the dental replacement part or the dental aid; and said blank data record comprises an axis of rotation 10. In order to illustrate the arrangement of the blank in the machine tool (not shown), a tool 11 is shown with a feed axis 12, extending perpendicular to the axis of rotation 10, next to the blank data record 8.

(9) FIG. 3 shows the two positioning steps in schematic form. In the first positioning step the model data record 1 is arranged within the blank data record 8 in such a way that the first axis of insertion 5 is aligned at a right angle 13 to the axis of rotation 10.

(10) In the second positioning step the model data record 1 is rotated so far about the first axis of insertion 5 that the second axis of insertion 7 is also aligned perpendicular to the axis of rotation 10.

(11) The result of the two positioning steps is provided as a position data record 14 for the manufacturing of the dental replacement part or the dental auxiliary element from the blank.