SU1764980A1 - Joined tab disk - Google Patents

Abstract

Use: when grinding and polishing parts with petal circles. The essence of the invention: the circle is provided with studs 2 installed in the flanges along the axis of the circle. On the heels of the condition of their coverage and with the possibility of radial movement are placed the petals of 3 abrasive cloth. Petals pursed elastic sleeves 4. 3 Il.

Description

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The invention relates to mechanical engineering and can be used in the elastic grinding of various workpieces.

A grinding machine is known, consisting of a mandrel and flanges, between which the petals of the grinding sandpaper and tucked in an elastic element are mounted on the studs.

This technical solution has the following drawbacks: the lack of regulation of working surface differences, since there is only one row of lobes in a circle; the simultaneous processing of several surfaces of the part due to the single-sided arrangement of the petals in the circle is not provided; there is no variation in the working part of the height of the circle; It is not possible to simultaneously treat various surfaces of dissimilar materials, such as steel and hard alloy; no simultaneous treatment of different surfaces with different roughness is provided.

A flap abrasive wheel is known, containing a mandrel, a hub, abrasive petals and flanges.

The disadvantages of this design of the circle include: the lack of adjustment of the petals in the radial direction of the circle, which does not allow processing of individual surfaces, for example, stepped, parts; this circle cannot simultaneously process different surfaces from different materials; petals are not rationally used; the greater laboriousness of making a circle on the operations of installation and gluing, processing two or five bushings of one set, as well as a significant consumption of metal and unsustainable use of abrasive material.

The purpose of the invention is the expansion of technological capabilities by increasing the range of machined surfaces.

This goal is achieved by the fact that the circle is provided with studs mounted in the flanges along the axis of the circle and designed to accommodate petals on them, the latter being located on said studs from the condition of their coverage with the possibility of radial movement.

FIG. 1 shows the proposed circle with a frequency cut; in fig. 2 shows variations in the diameter and stiffness of the wheel: in FIG. 3 - variants of the profile of the working part of the circle.

The collecting flap wheel consists of the housing 1, in which flanges 2 are screwed into the flange. On the latter there are rows

A, B and B bags of petals 3 of grinding sandpaper, pressed to them by elastic elements made in the form of rubber bushings 4, Circle mounted flange 5 by means of a nut 6.

The circle is assembled as follows.

The body 1 of the circle have studs 2 up. The elastic sleeves 4 are freely mounted on the landing outer diameter of the central part of the circle body. The doubled petals 3 of the sanding pelt are put on the pins 2. Then the flange 5 is installed on the central part of the body 1 and the pins 2. When the nut 6 is tightened, pressure is applied to the elastic sleeves 4, resulting in a reliable fixing of the petals 3. Then the assembled circle is balanced and is mounted on the shaft 7 of the spindle of the machine, followed by fixing with the bolt 8.

To change the outer diameter or rigidity of the wheel, it is necessary to loosen the nut 6 and the loose petals 3 are moved on the studs 2 in the radial direction with their subsequent fixing. FIG. 2a shows the minimum diameter and maximum stiffness; in fig. 26 - a circle with a larger diameter and lower rigidity of the working part of the petals.

This design provides for changing the profile of the working surface of the circle. For this, rows A, B, and C of petal packets, depending on the technological purpose of the circle, are set as shown in FIG. 3 schemes.

The use of this design of the flap wheel allows the simultaneous processing of various surfaces of the workpiece from non-uniform materials according to the required technological scheme, since the different rows of petals of the abrasive sanding material are placed from different abrasive materials; the productivity of the treatment process is increased as a result of the simultaneous grinding of several surfaces of their heterogeneous materials, reducing the time for changeover of the circles.

Claims (1)

Invention Formula A collection flap wheel, made in the form of coaxially mounted on a mandrel between two flanges of the sleeves with abrasive-skinned petals fixed to them, characterized in that in order to expand technological capabilities, it is equipped with studs mounted in the flanges along the axis of the circle and intended to be placed on of them petals, the latter are located on the specified heels of the conditions of coverage them with the possibility of radial movement. but FIG. 2 AT at at AT