SU1281385A1 - Apparatus for abrasion working - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used for finishing the annular surfaces of machine parts, as well as body parts. It is also possible to use it in instrument making when processing computer memory disks. The aim of the invention is to improve the accuracy of finishing flat surfaces. The device includes a housing 2 with smoy

Description

..H. L 4

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concentric with it and connected with the drive cup 5, in which the sleeve 11 is located with the eccentricity, carrying the node for controlling the eccentricity and the spindle of the tool 18, installed in it with the eccentricity and with the possibility of rotation around its axis. The eccentricity control unit is made in the form of a cover 13 mounted on the end of the sleeve 11 with the possibility of rotation relative to it and fixing it on

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to the glass 5 and the carrier kinematically svnanp1 with the body 2 of the spindle of the tool, which is spring loaded. This connection is made in the form of a gear wheel 15 fixed on the spindle, which engages with the wheel 16 with internal teeth mounted in the sleeve I1, and the planetary gear, the sun wheel 1 of which is fixed to the body, the satellite 9 at the end of the cup 5, and the central wheel 12 is at the end of the liner 11. Il.

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The invention relates to abrasive finishing and is intended for finishing flat, in particular annular surfaces.

The aim of the invention is to improve the processing accuracy by increasing the span of the lap at constant eccentricity, as well as reducing the imbalance of the device, by reducing the eccentricity t at a fixed span of the lap.

The drawing shows the kinematic. ka scheme of the device.

The device contains a solar gear wheel 1 with internal teeth, mounted on the end of the stationary body 2 mounted on the stand of the machine 3. Inside the body 2 on the angular contact bearings 4 mounted cup 5, on the top. the end of which is installed the pulley 6 belt drive 7 drive machine. A gear satellite wheel 9 is connected to the lower end of the glass 5 by means of the lever 8, having the possibility of free rotation around its own axis. Inside the cup 5 with eccentricity on the radially-strutted bearings 10 a sleeve 11 is mounted, on the lower end of which there is a central gear wheel 12 with external teeth. The satellite 9 is engaged with gear wheels 1 and 12. At the upper end of the sleeve 11, there is a cover 13, on which with eccentricity 6 a shaft 14 is mounted with a gear wheel 15 which engages with an additional internal gear gear 16, which is rigidly installed inside the sleeve. 11. To adjust the eccentricity, the cap 13 has the ability to rotate on the radial-thrust bearings 17 and is fixed with the cup 5 in the required position. In this case, within the limits from O to 2e, the required eccentricity between the shaft axis and

O 14 and housing 2, i.e. 5. A tool 18 is attached to the lower end of the shaft 14, and a compression spring 19 is mounted on the upper end of the shaft 14, abutting the lower end of the stop bearing 20 mounted on the shaft 14, and the upper end of the threaded sleeve 21.

The device works as follows.

0 The tool 18 ends on a flat surface to be machined (not shown) of the workpiece. The required pressure is created by rotating the threaded bushing 21 by compressing the spring 19 Pulley 6 receives a rotational movement at a frequency n from the machine drive through the belt drive 7, driving the cup 5 into rotation, which through the lever 8 draws the axis of the satellite 9.

Thus, the axis of the satellite 9 makes a rotational movement around the axis 0-0. The sleeve II at the same time performs two rotational movements; around the 0-0 axis with the frequency h, and wok5 of the own AA-axis with the frequency nj п, -г, / г ,, where 2, and Z;, z are the number of teeth of gear wheels 1 and 12. Consequently, it is fixed rigidly on sleeve 11 additional gear wheel5

from 16 receives rotation around its own axis A-A with frequency n ,,. Thus, the gear wheel 5 with 15 with the additional gear wheel I6 of the internal gear, together with the shaft 14 and the tool 18, makes two movements: rotation with the sleeve 11 and the cup 5 around the 0-0 axis with the frequency n, and rotational and the tool spindle installed in it with an eccentricity and with the possibility of rotation around its axis, characterized in that, in order to improve the accuracy of flat surfaces, the eccentricity control unit is made in the form of a speck installed on the end face of the sleeve Stew

around its own axis, B – B, with a clock –– rotation relative to it and fixation 0, n.j. z, g / z, 5, where z, and 2.5 are the number of teeth of the wheels 16 and 15. Consequently, the span of the wheel is 4e.

Claims (1)

Claim 5 On the cup and the carrier kinematic, the tool spindle connected to the body is spring-loaded, and the connection is made in the form of a rear wheel attached to the spindle and meshed with the inner teeth of the sleeve and the planetar. The sun gear is mounted on the body, the satellite is on the end of the glass, and the central wheel is on the end of the sleeve. An abrasive machining device comprising a housing with a concentric-mounted and drive-related glass, in which an sleeve is located with eccentricity, carrying an eccentricity adjustment unit and an instrument spindle mounted in it with an eccentricity and rotatable around its axis, characterized in that , in order to improve the accuracy of fine-tuning of flat surfaces, the eccentricity control unit is made in the form of a key installed on the end of the sleeve with turning relative to it and fixing The spindle of the tool, which is spring-loaded, is kinematically connected to the body and the connection is made in the form of a gear mounted on the spindle and engages with a wheel with internal teeth mounted in the sleeve and a planetary solar transmission the wheel of which is fixed on the body, the satellite - at the end of the glass, and the central wheel - at the end of the sleeve.