Abstract: A tool for use in machining equipment for machining a item from a workpiece via longitudinal and transverse movement includes stepped regions having different diameters, each provided with a lateral surface for transverse lateral machining and a front surface for longitudinal feed machining, the tool diameters in the stepped regions decreasing toward the forward face of the tool.

Abstract: The invention relates to a blank for producing dental shaped parts, comprising a blank body (1) made of tooth restoration material, from which the shaped part can be machined using a tool (11, 12, 13, 14, 15) for removing material. The aim of the invention is to enable a reliable verification or recognition of the tool fitting or of the type and state of wear of the used tool of a machine tool for the blank. To this end, the blank has at least one gauge (4, 5), whose dimensions are such that the tool present for the machining can be identified by the gauge on the basis of its outer contour. The invention also relates to a method for producing dental shaped parts with a blank body made of tooth restoration material, from which the entire shaped part can be machined in a machining device by a tool for removing material.

Abstract: A blank and method for the production of dental shaped bodies in machining equipment having at least two tools located in the machining chamber of the machining equipment, including a corpus of tooth restoration material, from which the shaped body can be carved by means of at least one of at least two tools by material removal. The blank exhibits at least two gages, each of which is in the form of a recess, the geometry of which is such that the tool selected for the cutting operation can be recognized by means of at least one of the gages by reference to its outer contour, the at least two gages being disposed on the blank in such a way that they can be simultaneously engaged by the at least tools when the blank is clamped in the machining equipment for carving purposes.

Abstract: The invention relates to a method, a tool (1), and to machining equipment (14) for producing dental prosthetic items by means of transverse lateral machining and longitudinal feed machining. In the present invention, dental prosthetic items are machined in machining equipment (14) by a method employing a tool (1) adapted for transverse lateral machining and longitudinal feed machining. The tool (1) used possesses stepped regions (2, 3, 4) having different diameters, each provided with a lateral surface for transverse lateral machining and a front surface (6, 8, 9) for longitudinal feed machining, the tool diameters in said stepped regions (2, 3, 4) decreasing toward the forward face (6) of the tool.

Abstract: The invention relates to a measuring device (16; 40) comprising elements (16; 40) for measuring models for producing dental fittings by generating a three-dimensional data record as a model for the three-dimensional machining of a workpiece (11). The measuring elements (16; 16?) are configured in such a way that they can also detect an identification comprising information about the workpiece. The invention also relates to a machining device for producing dental fittings from a workpiece (11). Said device comprises a receiving device (13; 31) for the workpiece (11), an identification (22) comprising information about the workpiece (11) being applied to said workpiece (11) or workpiece holder (12). In addition, elements for detecting the identification of the workpiece (11) that is held in the receiving (13; 31) device are provided and a single measuring device (16; 40) is used to measure the model and to detect the identification.

Abstract: The current positioning data of a machining tool with regard to a reference surface of a workpiece or of a body connected to the workpiece, is determined. The tool and the workpiece to be machined are relatively moveable toward and away from one another, and the rotary speed of a drive motor for the tool is set to a starting rotary speed which is so low that, when the tool comes into contact with the reference surface, its rotary speed is measurably reduced, the reference surface is moved past the tool before the tool is in contact and while the tool is in contact. As a result, the braking moments in the bearings are increased, and the drive motor comes to a stop quicker.

Abstract: 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°.

Abstract: A method for the production of medical fittings, in particular dental fittings, is proposed. A workpiece (1), from which the fitting is produced, has material removed from it by machining with a tool (7). The tool (7) and the workpiece (1) execute a relative movement with respect to each other along a fixed trajectory. The instantaneous loading of the tool is used to control the speed of this relative movement. In order to avoid the load peaks which occur here, and to ensure a more uniform control, it is proposed that the expected loading of the tool along the trajectory is also calculated and is used to control the speed.

Abstract: 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.

Abstract: The current positioning data of a machining tool with regard to a reference surface of a workpiece or of a body connected to the workpiece, is determined. The tool and the workpiece to be machined are relatively moveable toward and away from one another, and the rotary speed of a drive motor for the tool is set to a starting rotary speed which is so low that, when the tool comes into contact with the reference surface, its rotary speed is measurably reduced, the reference surface is moved past the tool before the tool is in contact and while the tool is in contact. As a result, the braking moments in the bearings are increased, and the drive motor comes to a stop quicker.

Abstract: A device for production of medical fittings, in particular dental restorations, of simple construction, where it is also to be ensured that the restorations are not destroyed by the machining forces. It is of particular importance that the fittings can be made especially quickly and with precision. To achieve this, a device is proposed with a workpiece 1 which can be moved in the axial direction along a feed axis 3, with a first machining tool 5 on one side of the feed axis 3, and with a second machining tool 15 operating simultaneously on the other side of the workpiece 1, in which device the machining tools 5, 15 are designed as rods which can be set in rotation and have radial and terminal working faces 16, 17, 17′, and in which device the machining tools 5, 15, during machining of the workpiece 1, are arranged at approximately the same height relative to the feed axis 3 of the workpiece, so that they work along closely adjacent machining areas 32, 33; 44, 45.