摘要:
An apparatus for recording medical objects, in particular for recording models of prepared teeth, comprising a position-sensitive sensor (2), which is movable in the projection direction, with a projection unit and a receiving unit (13-15; 18-21), and with a certain triangulation angle (&agr;) located between the projection path of the rays (10) of the projection unit (13-15) and the observation path of the rays (11) of the receiving unit (18-21), and with the projection path of the rays (10) aligned parallel to the direction of movement of the sensor (2), is realized for the accurate recording action of edges and steep surfaces of the type that occur in tooth cavities with a triangulation angle (&agr;) that is smaller than 10°, preferably smaller than 5°.
摘要:
Holding device for aligning and mounting a workpiece in an apparatus includes a receiving opening (6) provided for the holding device (20; 30), means (7) for positioning the holding device disposed in the receiving opening (6) for determination of the position of the holding device in relation to the receiving opening, wherein the holding device (20; 30) is connected with a workpiece carrier (21; 31), wherein the workpiece carrier (21; 31) is adjustable relative to the holding device, and wherein optical means (8; 11-17) are provided for viewing of the workpiece and thereby alignment of the workpiece on the holding device is performed.
摘要:
A dental machining device (1) having at least one shaft (2) which projects into a machining chamber (4) and is displaceable in both axial and radial directions includes a sealing element (7) having at least two axially spaced sealing lips (8, 9) bearing against the shaft (2) in its peripheral direction and enclosing an annular chamber (10) with the shaft (2). At least one fluid conduit (11) opens into the annular chamber (10) to supply a fluid (16) thereto. A pressure sensor (14) is provided for detecting a state variable of the fluid, which is detected and held ready for transmission to a control unit (14″).
摘要:
The present invention relates to dental machining apparatus (1) for blanks (3) comprising a tool spindle (2) having an axis of rotation (2.8) and mounted in a bearing housing (1.2) disposed on the machine housing side. A force sensor (5) is also provided, which is disposed between the tool spindle (2) and the bearing housing (1.2) for the purpose of detecting the machining force acting on the tool spindle (2), wherein the tool spindle (2) can be supported against the bearing housing (1.2) directly or indirectly via the force sensor (5).
摘要:
The present invention relates to dental machining apparatus (1) for blanks (3) comprising a tool spindle (2) having an axis of rotation (2.8) and mounted in a bearing housing (1.2) disposed on the machine housing side. A force sensor (5) is also provided, which is disposed between the tool spindle (2) and the bearing housing (1.2) for the purpose of detecting the machining force acting on the tool spindle (2), wherein the tool spindle (2) can be supported against the bearing housing (1.2) directly or indirectly via the force sensor (5).
摘要:
The invention relates to dental machining device (1) having at least one shaft (2) which projects into a machining chamber (4) and is displaceable in both axial and radial directions, and having a sealing element (7) for sealing the shaft (2), wherein the sealing element (7) exhibits at least two axially spaced sealing lips (8, 9) bearing against the shaft (2) in its peripheral direction and enclosing an annular chamber (10) with the shaft (2), at least one fluid conduit (11) opening into the annular chamber (10) to supply a fluid (16) thereto, and means (14) for detecting a state variable of the fluid.The invention further relates to a method for monitoring such sealing elements, by means of which a state variable of the fluid (16) is detected and held ready for transmission to a control unit (14″).