SU1255389A1 - Turntable - Google Patents

Abstract

The invention relates to a machine tool industry and can be used in dividing mechanisms. The purpose of the invention is to improve the reliability of fixation and positioning accuracy. The rotary table contains a serrated face coupling, one coupling half 5 of which is connected to faceplate 3, and the other coupling half 6 is installed on the collets 8 with the possibility of axial movement. Under the action of springs 14 t gi. 13 acts on the half coupling 6 through the pressure ring 9 and the collet 8, which crimp the guide pins 7, and the coupling closes. To rotate the faceplate 3, the coupling halves 5 and 6 open. To do this, in the cavity of the hydraulic cylinder they create pressure, the piston 12 moves the disk 10 through the fingers 11, which 3 turns the collet 8 out of the conical socket. Couplings 6 and then together with the pressure ring 9 pulls off the coupling half 6, opening it with the coupling half 5. 1 silt (O (L N3 heard 00 00

Description

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The invention relates to a machine tool industry and can be used in dividing mechanisms.

The purpose of the invention is to increase the reliability of fixing the table by fastening the movable coupling to the body by means of a collet and guide pins, as well as the accuracy of the positioning.

The drawing shows a rotary table, a general view.

The turntable includes a housing 1, on which a flange 2 is rigidly fixed, and a faceplate 3 rigidly fixed on the rotary ring 4.

The indexing mechanism of the faceplate 3 is made in the form of an end gear coupling, one half-coupling 5 of which is rigidly connected with the swivel ring 4, and the other half-coupling 6 is connected with the fixed part of the table. On the flange 2 there are rigidly mounted guide pins 3 parallel to the axis of the faceplate 3, of which there can be at least two.

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Collets 8 are mounted on the upper part of the guide pins, which, with their outer conical surface, interact with the surface of the conical holes of the coupling half 6. Press the 1-mm ring 9 through the disk 10 and the fingers 11 interact with the piston 12 g of hydraulic coupling in which they pressurize the PasMbiKaHHH coupling and turning the table.

The closing mechanism of the half coupling 6 is installed in the form of, ti 13 and disc springs 145 installed in the flange 2 "

In the clamped position of the faceplate 3, the coupling half 6 by the force of the spring 14 through the pressure ring 9 and the collet 8 is pressed to the coupling half 5 5, which is rigidly fixed to the rotary ring 4. The collet 8 by the force of the spring 14 compresses the cylindrical surface of the fixed pins 7j fixed in flange 2 „

To rotate the table, it is necessary to open the end coupling, for which a pressure is created in the cavity of the hydraulic cylinder.

Lenie. The piston 12 through the fingers 11, the disk 10 initially squeezes the collet 8 from the conical hole of the coupling half 6, and then together with the pressure ring 5, 9 pulls the coupling half 6, opens it with the coupling half 5.

The extreme position of the piston 12 is determined by the complete opening of the gear coupling. After rotation of the faceplate 3 with the rotary ring 4 and the half coupling 5 for the required amount, the supply of pressure to the cylinder cavity is stopped. In this case, the pressure ring 9 under the action of the puller rod 13 and the springs 14 through the collet 8 follows the guide pins m 7 in the direction of the closing of the coupling,

The collets 8, which are in contact with the conical surface of the opening of the half coupling 6, at the moment of complete closing of the coupling half 6 with the coupling half 5, under the action of the force of the pressure ring 9, clamp the guide pins 7 along their guiding cylindrical surfaces, thereby eliminating the gap during the movement of the closing and uncoupling the coupling half.

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Claims (1)

Invention Formula 30 A rotary table containing a faceplate with mechanisms for its rotation and fixation, the latter being made in the form of an end gear coupling, one half-coupling of which is rigidly connected with the faceplate, and the other is mounted on the fixed part of the table with the possibility of axial movement. 40 in order to increase the reliability of fixation and accuracy of positioning, it is equipped with guide pins placed on the fixed part of the table parallel to the axis of the faceplate and collets, and the coupling half, installed s on the fixed part of the table, is threaded with conical holes in which guide pins and. collets, the latter being arranged with the possibility of contacting the outer surface with the surface of the conical holes of the coupling half, and the inner surface with the guide pins. 50 VNShPI Order 4761/17 Circulation 826 Subscription Random polygons pr-tie, Uzhgorod, st. Project, 4 Invention Formula 30 A rotary table containing a faceplate with mechanisms for its rotation and fixation, the latter being made in the form of an end gear coupling, one half-coupling of which is rigidly connected with the faceplate, and the other is mounted on the fixed part of the table with the possibility of axial movement. in order to increase the reliability of fixation and positioning accuracy, it is equipped with guide pins placed on the fixed part of the table parallel to the axis of the faceplate and collets, and the coupling half installed on the fixed part of the table is aligned with conical holes in which pins and. collets, the latter being arranged with the possibility of contacting the outer surface with the surface of the conical holes of the coupling half, and the inner surface with the guide pins.