CS252100B1 - The Broueio disc and the method of its production - Google Patents

Abstract

A grinding wheel that has bundles of segments placed on a carrier plate in the casting compound, with the longest, longitudinal side perpendicular to the carrier plate, represents a simple production and the possibility of maximum utilization of β diamond abrasive segments, which can be advantageously used as a residual, in the production. During production, the segments in the bundles are slightly separated during casting with the compound so that the casting compound can flow between them, while its excess is squeezed out after the segments are released by the elastic surrounding band.

Description

BACKGROUND OF THE INVENTION The present invention relates to a grinding wheel with diamond abrasive segments for face grinding, in particular for grinding hard materials such as granite or syenite. The invention also relates to a method for manufacturing this grinding wheel.

Grinding wheels using diamond abrasive segments for grinding said hard materials are very demanding tools, with insufficient use of diamond segments. Their high price is largely due to complex production.

In particular, the most commonly used tool is essentially a steel desTca, on which the diamond-shaped prism-shaped segments are once sold by their silver walls into blocks. Such production is materially and energy-intensive, while the used segments cannot be sufficiently utilized - the size of the 5x5x20 mm segment used cannot be sharpened enough to represent a substantial use of the diamond abrasive segment material.

The above-mentioned disadvantages are substantially eliminated by the grinding wheel using the diamond abrasive segments for face grinding according to the invention, which consists in that the diamond abrasive segments are arranged in bundles with adjacent longitudinal sides and in alignment on the carrier plate in the encapsulating material. longitudinal sides perpendicular to the surface of the plate carrier.

The grinding wheel of the described embodiment can be produced by the method according to the invention, which is based on the fact that the diamond abrasive segments, when assembled into bundles, are wrapped around an elastic band and set on the gripper plate.

The grinding wheel is functionally very efficient, allows as much as possible the material of the diamond segments, advantageously it is possible to use the residual segments, the production process then ensures very cheap and relatively fast production.

With reference to the drawing, in which Fig. 1 is a cross-section of the grinding wheel and Fig. 2 is a front view, the object, with an example of a particular embodiment, will be explained in more detail.

The grinding wheel of the present embodiment is intended for the face grinding of hard materials, especially granite or syenite. Is formed

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2 with a carrier plate 6, to which the bundles J of the grinding prismatic segments with diamond abrasive are fastened by the casting compound 2. The segments are oriented longitudinal (i.e., longest) sides toward each other, the longitudinal sides being perpendicular to the carrier. Segments can be used residual, that is naptf *. worn from sawmill. the degree of wear, which in saw blades extends to one of the longitudinal sides. '

In a specific case, a grinding wheel of an outer diameter of 450 mm was formed, the segments were assembled into cylindrical bundles 6, with blocks of 2 larger diameters assembled on one of the larger pitch circles and blocks of 2 smaller diameters on the smaller pitch circle. substantially alternately with blocks of larger diameter J (approximately shown in FIG. 2). Two-component sealant j was used as the sealing compound 2. In this case, the sealing compound g reaches approximately half the height of the segments. By using this wheel, the diamond abrasive segments can be fully utilized, i.e., grind down to the carrier plate J., which, due to the orientation of the longest side of the segments perpendicular to the carrier plate χ, means utilizing the total volume of the segments. Thus, not only the protruding parts of the segments can be utilized from the casting compound 2, but also a part of the segments together with the casting compound 2 can be ground without deterioration of the cutting conditions. ground material.

The method of manufacturing grinding wheels described above also means a material and labor intensive technology. The segments are assembled into bundles 3, which are wrapped with elastic band (rubber band), bundles J in the required force are assembled on the carrier plate χ according to the required arrangement and during pouring with potting compound 2 the individual segments in bundles J are slightly separated Thus, a potting compound could penetrate between them, which, after releasing the segments and compressed by the elastic strip, serves in sufficient amounts to bond the individual segments together.

After the sealing compound 2 has hardened, the grinding surface of the disc is activated by grinding on a sandstone plate, whereby the disc is ready for grinding.

Claims (2)

1. A grinding wheel using diamond grinding segments for end face grinding, characterized in that the diamond grinding segments are arranged in bundles with adjoining longitudinal sides and with the longitudinal sides perpendicular to each other on the carrier plate (g). the surface of the plate carrier (1). Method for producing a grinding wheel according to claim 1, characterized in that the diamond abrasive segments, after assembly into bundles (3), are wrapped around an elastic band and, when alignment on the carrier plate (1), the casting compounds (2) _t are displaced between their contact surfaces.