SU1098765A1 - Apparatus for working optical parts - Google Patents

Abstract

DEVICE FOR PROCESSING .KI optical parts, containing the central spindle of the drive with a finger in the groove of the housing, - pushers with working elements, installed (Lll. O with 00 -N 35 SLN axial displacement under the action of the hydraulic unit, characterized by The fact that, in order to increase the accuracy of aspherization by increasing the stability of the specific pressure in the processing zone, the device is equipped with rotatably mounted sleeves in the housing for accommodating the tappets, kinematically connected and introduced into the device leash planetary spindle seizing central spindle further coupled to the housing ..

Description

The invention relates to abrasive machining and can be used in the clipping and polishing of optical parts with aspherical surfaces used in optomechanical and optoelectronic devices.

A device for grinding and polishing optical components with aspherical surfaces, made in the form of kinematic pairs that are moved along, draws a power circuit under the action of a hydraulic device consisting of several closed lines, which correspond to the number of working zones of the tool. Each of the lines has pressure accumulators and mechanisms for plane adjustment and continuous monitoring of these pressures. Aspherization with this tool is based on the distribution of: work by part zones due to variable pressure in the zones (1.

A disadvantage of the known tool is the limitation of the possibility of increasing the aspherization accuracy due to the instability of the frictional force in kinematic pairs moved along the force closure line of the hydraulic device, since here the friction forces are perpendicular to the reaction forces (pressure) in the guides right my dependence on it. This leads to an increase in the friction force, which makes it difficult to move the pushers in the guides and worsens the lubricant state between rubbing surfaces.

The purpose of the invention is to increase the accuracy of the sphering process by increasing the stability of the specific pressure in the treatment zone. The goal is achieved by the fact that the device for processing optical components, containing the central spindle of the actuator with a finger, is inserted into the groove of the housing, carrying pushers with working elements, mounted for axial movement under the action of the hydraulic unit, provided with guides mounted in the housing bushings for accommodating pushers, kinematically associated with a planetary spindle inserted into the device, covering the central spindle, additionally ny with the body.

Fig, I schematically shows the proposed device, the section; on fig 2 shows section A-A in FIG. I.

The device is made in the form of kinematic pairs consisting of working elements 1, which are hingedly connected to the pushers 2, which are placed in guide bushings 3 mounted in the body 4 from the carriage: it can be rotated around its axes. On. The guide bushes 3 secure the gear 5, which is kinematically connected with the gear wheel 6 or directly.

through the parasitic gear 7. The gear wheel 6 is mounted in the housing 4 and provided with a hinge link, for example, a socket for the spherical tip of the driver 8

planetary pinch 9. Case 4 is pivotally connected to the central spindle 10 by means of a central pin II and a side leash 12. The central spindle 10 is mounted in the orifice of the planetary pin 9, mounted in the eccentric orifice of the spindle 13.

The work elements 1 are connected to the body 4 by means of an elastic part, chla 14. There are sanding pads attached to the work elements 15. Pushers 2

the working elements 1 interact with pressure accumulators through a rubber membrane 16 of an oil cushion of cavity B formed by the walls of the cover 17 and membrane 16. The cavity B is connected to hydraulic accumulators with a flexible hose 18

 and is equipped with a drainage plug 19 .-- The device is installed on the surface of the workpiece 20 fixed to the workpiece spindle 21 at an angle ot to

5 axis of rotation of the spindle 13. Angle c (assumed to be equal to or close to the angle of the cone closest to the aspheric surface.

Work elements 1 are located on the surface of the workpiece 20 with a constant or variable pitch around the circumference, with a diameter

,

where the MC-coordinate forming part of the workpiece on the edge; dj is the diameter of the grinding wheel of the work item. The guide sleeves 3 and the gear wheel 6 are mounted in the housing 4 corresponding to the bearings 22 and 23.

The number of working elements 1 and hydroaccumulators corresponds to the number of annular zones on the workpiece surface 20. The number of zones is chosen depending on the asphericity and diameter of the workpiece. Pushers 2 can be located along the generatrix of the cylinder or along the generatrix of a cone whose apex coincides with the center of the sphere closest to the surface being machined.

The device works as follows. 0 som.

The product spindle 21 is installed at an angle ot with respect to the axis of the spindle 13. The device 20 is mounted on the surface to be machined so that the axis of rotation of the spindle 13 passes 5 through the center of the sphere closest to the surface being machined. Workload U Transmit the central spindle 10 and the central finger 11.

Claims (1)

(56) ί. USSR author's certificate No. 218687, V. 24 V 13/00, 1966 (prototype) 'DEVICE FOR PROCESSING OPTICAL DETAILS, containing - Fig.] Axially displaceable under the action of a hydraulic unit, characterized in that, in order to increase asphericization accuracy by increasing the stability of the specific pressure in the working zone, the device is equipped with guide sleeves mounted in the body with the possibility of rotation to accommodate pushers kinematically associated with the planetary leash inserted into the device