The multifunctional parallelometer

 

The invention relates to prosthetic dentistry and is intended for the manufacture of dental prostheses. Effect: increase the accuracy and reduce the complexity of determining the angle of slope of the middle axis of the abutment teeth, ensuring productive machining model. Parallelometer contains a base, a fixed working table, stand with fixation tools, drilling and milling devices. Parallelometer provided with means for measurement of the angles of deviation from the vertical (tilt) of the abutment teeth model of the jaw. The angle of the tooth is determined by the degree scale on the protractor indicated by the arrow, is rigidly connected with the rod analytical rod which can be rotated about a horizontal axis from a vertical to a position parallel controlled tooth. Measuring means mounted on one of the brackets rolling racks. On the other bracket means similar design provides the function of a graphite rod when the horizontal location of the model on the working table. The working table has a rigid connection between the base platform and guiding device vertical peremeshannuyu clutch and a freely rotating base disc. 1 C.p. f-crystals, 2 Il.

The invention relates to medicine, namely to prosthetic dentistry and can be used for the manufacture of dental prostheses.

Known parallelometer having in addition to the traditional sites: the working table and stand with fixation of the measuring tools, drilling-milling device. In the modernized parallelometer saved used before the design table and node consolidation of measuring instruments and principles, fulfillment of functions of these nodes (“Dental technician”, 1999, №1(13), the special edition, R. 17, parallelometer with milling and drilling device).

Known parallelometer with milling and drilling device that provides precise vertical movement of the tool (patent RF №2178270, publ. 01.02.2002).

The disadvantage of the design is low accuracy, and greater complexity in the determination of the angle of slope of the middle axis of the abutment teeth.

The objective of the invention is to improve the accuracy and reduce the complexity when using the device.

The problem is solved in that parallelometer containing base, a fixed working table, stand with fixation instruments swerling kreplennymi on her arms nodes commit analytical and graphite rods with means for measuring the angle of inclination of the abutment tooth in the form of coaxially mounted degree of the scale of the protractor, rod with a horizontal axis of rotation and pointing arrows and guide vertical movement is rigidly connected with the platform table, including cross coupling with a freely rotating base disc, the body of the table is associated with the platform screw pair, consisting of a screw and nut, which allows vertical movement of the platform table.

In Fig.1 shows the scheme of the template of Fig.2 - section a-a of Fig.1.

Parallelometer comprises a base 1, a work table 2, the movable rack 3, drilling milling device 4, a guiding device vertical movement 5, rigidly connected with the platform table and including a cross-coupling 6 and the base disk 7. The case table is associated with the platform screw pair: screw 8 and nut 9. On the arms of the movable rack 3 with the possibility of fixing on the desired height is set with the same design nodes analytical and graphite G rods. Elements of each of the nodes: the rod 10 with a horizontal axis of rotation, degree protractor scale 11 and the index arrow 12 is fixed coaxially. In drilling-milling device 4 includes the following components: an electric motor 13, a belt 14, the spindle Assembly 15. Linear scale is et as follows.

The model of the jaw is fixed to the base disk 6 of the working table 2. The movable rack 3 fixed to the rod 10 analytical rod down to the model. By turning the stem 10 sets of analytical rod in position, parallel to the longitudinal axis of one of the abutment teeth, and with respect to the direction of inclination of the fixed angle of inclination of the tooth on the degree scale 11 using the index of the arrow 12. Then determine the amount of tilt of the longitudinal axis of the second abutment tooth, and so on, the arithmetic Mean values of the measured angles of inclination of the abutment teeth is the angle average of the selected axis of the abutment teeth. The magnitude of this angle is set by the degree scale graphite rod. Consistently fail graphite rod to each abutment tooth and outline on it dividing line. To perform drilling and milling operations in collet Chuck spindle 15 is fixed corresponding cutting tool. Specified position of the model relative to the cutting tool provide by displacements in the horizontal plane Phillips drive clutch 6. Vertical flow model of the tool provide the counter-clockwise rotation of the nut 9, is fixed against axial movement in the housing I the magnitude of the angle of rotation of the nut 9, depending on the thread pitch of the screw pair 8-9. Circular milling element models perform during the rotation of the base disk 7 on the vertical axis.

Claims

1. Parallelometer containing base, a fixed working table, stand with fixation tools, drilling and milling device and a guiding device vertical movement, graphite rod, characterized in that it is equipped with the fixing unit of the measuring instrument to measure the inclination of the abutment tooth in the form of coaxially mounted on a movable rack mounted on its bracket analytical and graphite rods degree protractor scale, a rod with a horizontal axis of rotation which is fixed to the analytical rod, and pointing arrows, guiding the vertical movement device is rigidly connected with the platform table, including cross coupling with a freely rotating base disc, in this case the table is associated with the platform screw pair, consisting of a screw and nut, which allows vertical movement of the platform table.

2. Parallelometer under item 1, characterized in that it is equipped with linear scale vertical movement of the working platform article is

 

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