SU23810A1 - Machine for stripping, grinding and polishing optical lenses - Google Patents

Description

The invention relates to machine tools for grinding, polishing and polishing optical lenses, using for strengthening the spindles carrying the lenses and processing tools of two different holders, of which one is movable axially and pivotally relative to the other, and with the drive of these spindles from a common central gear. . In such machines, in order to transfer the rotation from the common central gear of the spindle with the holder of the lens being machined and the processing tool, it is proposed to use rollers included in the gear and connected with the spindles of the tools directly, and with the spindles of the lenses by means of intermediate shafts with coupling couplings. To periodically raise and rotate automatically the holder of the processed lenses, it is proposed to use an axis equipped with two screws and receiving its rotation from one of the rollers mentioned above. The supply of grinding material to the p-surface of the machining wheels is proposed to be carried out through tubes arranged parallel to the axis of the circle and equipped with pistons ejected by the grinding material, which are activated automatically.

In FIG. 1 shows a view of the proposed machine from the side with partial cuts; FIG. 2 - view from above; FIG. 3 is a top view of its part in section along the line -B in FIG. one; FIG. 4 is a side view of the lens holders and the processing tool; FIG. 5 is a view of the tool for feeding the grinding material in axial opening; FIG. 6 view from above; FIG. 7-14 depict the details of the device of FIG. five.

On the hollow shaft 2, placed in bearings 5, 6 (Fig. 1) of the bed of the proposed machine and driven into rotation by means of a belt drive through pulley 1, the central gear 3 is wedged, causing twenty-three spindles 11 to rotate by means of transmission 4-15-9 -10, and twenty-four shafts 12-32 with a clutch 33, 34-through transmission 4- 15-7-8. Of the spindles, the 11 spindles a are designed for milling the processed lenses, the grinding spindles, the c-washing spindles, and the d-grinding spindles, meaning their specific arrangement sequence, indicated in FIG. 2

In the upper parts of the 32 shafts 12-32, six gears are wedged, coupled with gears 29, mounted on the spindles 13 of the lens holders 5 (Fig. 1) and pressed with the springs 30, together with the last ones downwards, with the gears 29, 31 boxes 28, attached to the disk holder 14, mounted on the shaft 22, which passes through the cavity of the shaft 2 (Fig. 1). To periodically lift the holder 14 and rotate it when changing lens processing operations, the axis 18 is designed to be driven from the roller 15 by means of a chain 16 and gears 17 and equipped with two worms 19, 20 (Fig. 1), of which the first passes the shaft 23 with a screw 24, and the second shaft 20, equipped with a fist washer 21 (Fig. 1 and 3). The washer 21 rests against the end of the shaft 22 and periodically shifts it upwards, thereby turning off the coupling sleeves 33, 34. The free end of the shaft 23 (Fig. 3) is equipped with a fist 25, periodically the driving shaft 23, with its rotation and lifting of the shaft 22, to the worm gear 26 of the shaft 22, in order to rotate the latter at a certain angle.

The holders for grinding are provided with a machining wheel, with circles 37 (FIG. 4), having openings parallel to the axis, in which tubes 38 with grinding materials 39 are fixed (FIGS. 5, 6, 7). Circle 37 is fixed to the upper part 41 of the spindle 11, provided with a central channel for grinding material ejected by the piston 50, while the remaining tubes 38 are also equipped with pistons 50 with springs (Fig. 5).

The upper part 41 of the spindle is fitted with a screwed tube 42 (FIG. 8), rotated by gears 35, 36, and the pin 44 of the washer 43 (fig. 5. 11 and 12) supporting the pistons by means of pins is engaged with cutting the pipe 42. 49, placed in vertical slots x 51 of tubes 38 (FIG. 7); From below, gear 36 is provided with an incomplete conical gear 45a having some portion of teeth 45y (FIGS. 13, 14). A conical gear 45, which sits on a shaft 47 passing transversely in spindle 11 and carrying a gear 46 coupled to a screw 48 intended to move upward the piston 50 of FIG. 5, 9, 10). When gears 36 are selected, spindle 11, bar 45, rotating with the latter, will periodically, due to lag of rotation of spindle 11 from rotation of the pinion 36, engage gear 45a and rotate around its axis, move the screw 48, therefore and Punch 50 with material 39, up on the working surface of the circle 37. The same lag of the spindle 11 causes upwards movement of the washer 43.

The lens S is first processed in the first three spindles xa (Fig. 2) by milling with diamond stuffed into the cup 37, after which it is broken on the spindle (Fig. 1) and fed to the spindle g for initial grinding. A further grinding transition to a finer grain alternates with polishing the lens, and the lens on the p d spin is polished and after one of the flushes between polishing it is finally finished on the last five spindles x d (Fig. 2).

The subject matter of the invention.

1. The machine for stripping, grinding and polishing optical lenses, with using for strengthening the spindles, carrying lenses, and processing tools of two different holders, of which one is movable in the axial direction and rotatable relative to the other, and with the drive of these spindles from the common central gears, characterized in that rollers 15 are included in the gear for rotating the spindles from the common central gear 3, which are connected to the spindles AND tools directly, and to the spindle 13 lenses by means of 12-32-screw shaft with clutch coupling 33-34 (FIGS. 1, 2).

2. In the machine tool described in paragraph 1, the mechanism for periodically lifting and turning automatically by the holder for the objects to be processed, characterized by using axis 18 rotated through the gear from one of the rollers 15 (Figs. 1, 3) with worms 20 and 19, of which the first is intended to rotate the shaft with the fist washer 21, acting on the shaft 22 connected with the holder 14, and the second serves to rotate the latter by means of a screw 24 on a spring 23 pressed by the shaft 23 fitted with a fist 25 in contact with a fixed stop for intermittently th engagement of the screw 24 with the pinion 26.

3. In the machine tool described in paragraph 1, a device for feeding the grinding material to the working surface of the machining wheels, characterized in that the circles 37 (Figs. 5, 6) are provided with axial holes in which the tubes 38 with grinding material 39 are fixed, for which pushes upwards are spring pistons 50 entering the tubes 38.

4. In the machine tool described in Clause 1, the device for feeding the grinding material to the working surface of the machining wheels, characterized in that the circles (FIGS. 5, 6) are provided with an axial hole, and the upper part 41 spindle 11 reinforced in circles has a central channel with grinding material to push through

upwards serves the piston 50 placed under HSM.

5. In the application described in paragraph 3 of the fixture, use for periodic movement automatically upward of the pistons 50 in the tubes 38

screwed pipe 42, rotated gear 35, 36 (Fig. 1), and put on part 41 of the spindle 11, in the thread on which the pipe 42 includes a pin 44, reinforced in the pistons supporting the pistons 43.

6. In the device described in Section 4, the use for periodically automatically lifting up the piston 50 in the channel of the part 41 of the spindle 11 fastened to the gear 36 of the conical gear 45 (FIG. 5) coupled to the gear 45 on the shaft 47 transversely inserted into the spindle 11 designed to act on her 46 46 on the support piston 50 rod 48.

B. R.

Type of. “PrintLab. to the author's certificate of P. E. Wenshau No. 23810

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