SU1404304A1 - Arrangement for fastening the grinding wheels - Google Patents

Abstract

The invention relates to a machine tool industry and can be used to attach grinding wheels on a vertical spindle of a balancing machine. The aim of the invention is to increase the productivity by reducing the time spent on changing the grinding wheels. The device is equipped with a washer 5 in contact with the end face of the collet 6, the outer cone of which interacts with the inner cone of the flange 2 and the clamping disk 8. An inertial drive is installed between the washer and the disk. When the spindle rotates, the inertial balls 7, moving from the center of the device, act through the washer 5 on the end of the collet 6, and the collet is fixed on the spindle. With further mixing of the balls 7, the pressure disk 8 moves. The higher the spindle rotation frequency, the more forcefully the pressure disk is pressed against the grinding wheel. Removal of the device after stopping the spindle rotation is carried out by a special device. 1 il. 3 $ and C 4: WITH

Description

The invention relates to the field of machine tool construction and can be used to attach grinding wheels on a vertical spindle of a balancing machine.

The aim of the invention is to increase productivity by reducing the auxiliary time when replacing grinding wheels.

The drawing shows the device, General view, cut

The device consists of a housing 1 with a flange 2, a spring-loaded spring 3 has a pusher 4i and a washer 5, which interacts with an end face with a collet 6 mounted movably in a conical hole of the flange 2J, between the washer 5 and the pusher 4 in radial grooves made on a circular surface inertial balls 7 are installed with the pusher 4 and having inclined bearing surfaces, while the pusher 4 is rigidly connected to the pressure disc 8,

The device operates as follows &

After the grinding wheel is mounted on the vertical spindle 9 of the machine, the device is put on, while the washer 5; under its own weight freely lies on the inertial balls 7, and the collet 6 also under its own weight freely lies on the washer 5, while between the outer cone of the collet 6 and the inner There is a gap in the cone of the flange 2.

When turning on the Gear 9 due to the friction between the end face of its grinding wheel and the face of the clamping disk 8, as well as the friction between the spindle and parts of the device, the pusher 4 is rotated. The inertial balls 7, which, under the effect of centrifugal force, are launched across inclined norrj surfaces for a larger radius, lift the washer 5 and the collet until the outer cone of the collet 6 is in contact with the inner cone of the flange 2, while the spring 3 is compressed.

With further movement of the inertial balls 7 of the collet 6, moving

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in the cone of the flange, compresses the spindle and is fixed on it.

After fixing the collet 6 on the spindle, the vacuum balls 7, trying to roll out over a large radius, create an axial force transmitted through the pusher 4 to the presser disk 8, which presses the grinding wheel to the spindle face, and the higher the spindle rotation frequency, With great effort, the presser disc 8 presses against the grinding wheel.

After the rotation of the pinch stops, the inertial balls 7 under the action of the spring 3 are displaced to the axis of the device, the spring 3 is expanded.

To remove the device from the machine spindle, a special device is used, which can be made in the form of a manipulator grip. The jaws fit into the groove formed on the body of the flange 2 and move it, compressing the spring 3, while the end of the collet 6 abuts against the fixture bar, so that the outer cone of the collet 6 comes out of contact with the inner cone of the flange 2, the collet expands.

The fixture thus fixed moves, removes the device from the spindle of the machine.

Claims (1)

Formula isobriten and A device for fastening grinding wheels on a machine spindle, in the case of which a collet is axially movable from the drive, characterized in that, in order to reduce the auxiliary time when replacing the grinding wheels, the device is equipped with an axially displaceable drive disk from the drive and a washer designed to interact with the end of the collet, while the movement actuator is located between the pressure disc and the washer, and in the case there is a conical surface, analogs the conical surface of the collet.