SU1442383A1 - Assembled abrasive wheel - Google Patents

Abstract

The invention relates to the field of machine tools, dp can be used to clamp abrasive bars in circles and allows to increase the reliability of the tricking of the abrasive bars. The circle is made in the form of a body 1 carrying abrasive bars 7 fixed with the help of clamping elements pivotally connected with centrifugal weights 4. The clamping elements are made with bevelled side surfaces designed for dp interaction with the side surfaces of abrasive bars 7 and They are equal shoulder arms 2, pivotally connected to the rods 6. At the same time, each of the beveled surfaces is directed towards the pivot joint of the rod with the centrifugal load. This embodiment of the clamping element eliminates the bias when clamping the abrasive bars, which increases the reliability of their attachment. 3 il. and

Description

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The invention relates to a machine tool industry and can be used for clamping abrasive bars in flat and spherical circles: machine tools.

The chain of the invention is to increase the reliability of fastening the abrasive bars.

FIG. 1 shows a circle for clamping abrasive bars; figure 2 - section aa in figure 1 | on fig.Z - preliminary use of abrasive bars nut with grooved, option

The circle contains a housing 1, on the outer surface of which the rocker arms 2 are located. In the housing 5, axles 3 are fixed. Centrifugal loads 4, made in the form of two shoulder arms, are movably mounted on axles x 3. The centrifugal weights 4 are fastened with the hinges 5 fixed in them to the rods 6, which are also pivotally connected to the rocker arms 2. When the circle does not rotate, the centrifugal weights 4 are in a free state, which rio3BO lets off. 2 away from the axis of rotation of the head, remove the worn abrasive bars 7 from the slots of the housing 1 and insert a new pair of abrasive bars. Similarly, the production of the remaining abrasive bars in a set of a circle. When turning on the working rotation, the machine spivdel, on which

The wheel is hardened, centrifugal weights 4 under the action of centrifugal forces applied to the center of gravity of the load O, tend to disperse, turning around the axis of the hinge 3. The developed force, increased by the ratio of the arms OB and WB, is transmitted through joints 5 and 6 as the rocker 2 in the direction of the center of rotation and reliably holds the abrasive bars 7 in the working position during the grinding time.

For pre-stitching the abrasive bars 7 during their change and for choosing the gap between the abrasive bar 7, the body 1 and the yokes. scrap 2 between the hub of the case I and the centrifugal load 4 is installed spring 8, acting in the direction from the center of rotation of the circle.

As a second variant of preliminary pressing of the abrasive bars 7, a nut 9 with corrugation is offered (FIG. 3), screwed onto the threaded end of the string 6. To remove the worn abrasive bars 7, it is sufficient to unscrew the nut 9 by one or two turns and the new abrasive bars 7 under the yoke 2e slightly

tighten it by tightening the nut 9. I

The use of the proposed circle is possible for any types of flat grinding and special grinding machines with horizontal, inclined and vertical spindle positions.

Claims (1)

Invention Formula The abrasive wheel, made in the form of a body carrying abrasive bars, fixed by means of clamping elements with lateral beveled surfaces, installed with the possibility of interacting with the side surfaces of abrasive bars and hinged with centrifugal weights by means of t, characterized in that, in order to increase the reliability of the abrasive wheel, the clamping elements are made in the form of equal-shaped arms, pivotally connected to the rods, each of the oblique surfaces pointing toward the hinge irradiation with centrifugal rods; fig.g srig.z