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公开(公告)号：US20220331073A1
公开(公告)日：2022-10-20
申请号：US17640938
申请日：2020-09-21
Applicant: DENTSPLY SIRONA Inc. , SIRONA DENTAL SYSTEMS GMBH
Inventor： Peter FALTIN , Oliver NOWARRA
Abstract: A computer-implemented method of planning of the shapes of free-form tool paths (P) for simultaneous two-sided machining of a dental restoration (1) having an individual free-form target geometry from a workpiece (2) by using a dental tool machine (3) having at least two tool spindles each having at least one tool (4) arranged on a different side of the workpiece (2) which is simultaneously movable along an axis (y) relative to the tools (4) thereby imposing a kinematic axis coupling. The method includes a step of determining transformations (T′, T″) of the target geometry by which the kinematic axis coupling is converted into a common coupling parameter for both tools (4); and a step of generating dependent on these transformations (T′, T″) the shapes of the free-form tool paths (P) in which the common coupling parameter is identical in time for all participating tool spindles that are driven simultaneously.
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2.发明公开公开(公告)号：US20230150185A1
公开(公告)日：2023-05-18
申请号：US17915138
申请日：2021-03-11
Applicant: DENTSPLY SIRONA Inc.
Inventor： Hans-Christian SCHNEIDER , Peter FALTIN
IPC: B29C51/44
Abstract: A hand tool (1) for separating a deep-drawn jaw-spanning dental apparatus such as an aligner or a bite splint of thermoform film. The hand tool includes a grip (2) for holding; a separating element (3) for thermally separating the deep-drawn thermoform film and refining the separated deep-drawn thermoform; a heating device adapted to regulate heating of the separating element (3) so as to increase the temperature of the thermoform film substantially to at least its glass temperature; and a power supply device for supplying electric power to the heating device.
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公开(公告)号：US20230144773A1
公开(公告)日：2023-05-11
申请号：US17915346
申请日：2021-03-11
Applicant: DENTSPLY SIRONA Inc.
Inventor： Hans-Christian SCHNEIDER , Peter FALTIN
CPC classification number: B29C51/445 , A61C7/08 , B29C51/08 , B29C51/46 , B29L2031/753
Abstract: A device for separating a deep-drawn jaw-spanning dental apparatus such as an aligner or a bite splint of thermoform film that includes: a separating element for thermally separating the deep-drawn thermoform film and simultaneously refining, the separated deep-drawn thermoform film; a heating means for regulating the heating of the separating element so as to increase the temperature of the thermoform film substantially to at least its glass temperature; a support for supporting the deep-drawn thermoform film relatively movable with respect to the separating element; a moving mechanism for moving the separating element along a separation contour of the deep-drawn jaw-spanning dental apparatus relative to the support; and a control unit adapted to control the heating means and the moving mechanism based on the separation contour.
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