SU878454A1 - Machine for cutting gear-teeth on pulp extractors - Google Patents

Description

(54) MACHINES FOR POSSIBLE TEETH ON PULP EXTRACTORS

12

The invention relates to the technological equipment of medical technology, in particular, to machines for the manufacture of pulpoextractors designed to remove pulp and nerves from diseased teeth during their treatment.

A machine for incising the teeth on the pulpoextractors is known, comprising a cutting incisor, an anvil for workpieces and a mechanism for moving the latter.

The disadvantage of the known machine is low productivity, because the machine does not have a loading device that automatically feeds the workpieces into the working area, and in it the operations of cutting the teeth and rolling the corrugations on the pulpoextractor handle are carried out in separate transitions (i.e., on the processing of the workpiece); poor quality pulp extractors, because the machine does not provide teeth of the same height.

The purpose of the invention is to increase productivity while improving the quality of pulpoextractors.

The goal is achieved by the fact that the machine is equipped with a loading device located above the transfer mechanism, made in the form of a support and mounted with the possibility of rotation of the disk, on

The axis of which is thin-walled with grooves under the diameter of the workpiece cylinder, frictionally associated with this disk, and corrugation on the cylindrical surface of the disk. There is a gap between the support and the disk. Grooved on the surface of the support adjacent to the surface of the disk.

 FIG. 1 shows a schematic representation of the machine, front view; in fig. 2 - the same, side view; in fig. 3 is a view A of FIG. 2; in fig. 4 is a section BB in FIG. 3; in fig. 5 is a view of B in FIG. 3

15 A machine for incision of teeth on pulpoextractors contains cutting incisors 1 of impact action, fixed rack 2, anvil 3 for workpieces, workpiece movement mechanism, made in the form of disc 4, which is simultaneously a knurling tool, since on its cylindrical surface there are corrugations, a thin-walled cylinder 5, on the surface of which grooves are made

25 for the diameter of the workpiece, the electric motor 6 with the gearbox 7, the charging device 8, in this case, the hopper for double or single workpieces.

Thin-walled cylinder 5 friction

30 is associated with the disc 4 of the movement mechanism

blanks, and the boot device 8 is installed above the latter.

The incising cutter 1 is installed on the console tool holder 9 and through the elastic element 10 (spring) is connected to a fixed stand 2.

The machine also has a second gearbox I and a cam 12, by means of which the oscillating movement of the cutter 1 from the electric motor 6 is provided.

The anvil 3 is located with a gap of variable cross section with respect to the cutting edge of the cutter 1 and is inclined to the axis of the preparation at an angle, the tangent of which is determined from the ratio of the notch step to the circumference of the larger diameter of the CUTTER, which is the pulpoextractor handle.

Bearing 13 is an element of the movement mechanism. Grooved on the surface adjacent to the disk surface. Thus, the support is a cloak. There is a gap between the disk 4 and the support 13.

A cutting knife 14 is mounted in the support 13 (die).

The machine works as follows.

The blanks are placed in the loading device 8 (Figs. 1 and 2), the electric motor 6 is turned on and through the reducer 7 the movement is transmitted to the disk 4, which is simultaneously a rolling instrument (Fig. 3). The cylinder 5, the frictioino associated with the disk, moves and secures the billets that are periodically supplied from the bottom of the boot device 8.

In this case, the billet with a diameter corresponding to the diameter of the knob of the poolextractor falls into the longitudinal cut of the thin-walled cylinder 5 and is guided into the working area between the disk 4 (by rolling tools) and the support 13 (cloak). The thin conic part of the workpiece falls into a gap of variable cross section between the anvil 3 and the cutting edge of the cutter 1 (Fig. 4), which (both the cutter and the anvil) are inclined to the axis of the workpiece (Fig. 5). At the same time, the incisal cutter 1 receives from the electric motor b through the gearbox II and the cam 12 by means of an elastic element 10 (spring) connecting the cantilever holder 9 with the fixed stand 2, oscillations corresponding to the working movement of the cutter 1.

Moving between the disk 4 and the support 13, the billet receives a translational motion in a direction perpendicular to its axis (Fig. 5), and a rotational movement around its axis. As a result of this, the entire length of the working section of the anvil 3 and the cutting edge of the cutter I is used successively. Simultaneously with the incision of the teeth, the corrugations are rolled on the diameter of the workpiece corresponding to the pulpoextractor handle. At the end of the rolling, the double billet is cut into single billets with a knife 14 embedded in

in support 13. Single blanks with notched teeth and knurled handles are removed from the working area and are dropped into the receiver (not shown).

Claims (3)

1. A machine for incising the teeth on the pulpoextractors, containing the cutting the cutter, the anvil for the workpieces and the mechanism for moving the latter, therefore, in order to increase productivity while improving the quality of pulpoextractors, it supplying with a loading device located above the movement mechanism, made in the form of a support and installed with the possibility of rotation of the disk, on whose axis the thin-walled with grooves for the diameter of the workpiece cylinder, friccioino associated with this disc, and on the cylindrical surface of the disc is corrugated. 2. The machine according to claim 1, characterized in that between the support and the disk there is gap. 3. Stacks according to claim 1, characterized in that, on the surface of the support adjacent to the surface of the disc, corrugation is made. J 5 LA J - nr m .fff / .f f /// .J S fug.