SU592588A1 - Abrasive wheel - Google Patents

Description

one

The invention relates to the manufacture of an abrasive tool.

An abrasive tool is known, on the working surface of which alternating areas are located on the metal and organic binder 1.

The combined use of the two binders in the construction allows realizing the wear-resistant qualities of the metal binder with the possibility of obtaining high-purity processing inherent in the organic binder.

However, the design of the famous circle abrasive and & allows to realize it for machining nz crystal, requiring the use of edge-resistant tools with an angular profile.

In order to preserve the geometry of a circle with an angular profile, the part of the circle that forms the profile is made on a metal binder, and the side sections attached to it are on an organic one.

The drawing shows an abrasive wheel, an overall view.

in the proposed circle, the section 1, which forms a sharp edge, is performed on the metal binder, which provides the necessary edge-resistance of the tool, while the side sections 2, to which increased requirements are made

parts of the treated surface are made on an organic binder.

The side surfaces of the circle are made on the basis of phenolic-formaldehyde resin,

copper and bismuth from ACP diamond, grain size 63/50, concentration. The plot with the angular profile is made on the basis of .media and tin from the DIA brand diamond with a grain size of 63/50, with a concentration of 100%.

The proposed circle was tested at VNIIalmaz when processing crystal plates; upon following; eat mode; circle rotation frequency - 5.0 thousand rpm; grinding depth - 2 mm; cross feed - 200 mm / min.

Grinding is carried out with cooling.

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Comparative data on the proposed circle and the circles previously used for this operation are shown in the table.

On the basis of the tests carried out, it can be seen that the edge resistance of the proposed circle is equal to the edge resistance of the circles on the metal binder1, which is now used in the operation of applying diamond faces to crystal, and the surface roughness of this surface is 1.5-2 times less than that of the circle on a metal binder, and is equal to the roughness obtained by circles on an organic binder.

Claims (1)

Formula of Responsibility Abrasive wheel, the working part of which is made of alternating sections on a metal and organic binder, characterized in that, in order to preserve the geometry of a circle with an angular profile, the part of the circle that forms the latter is polyethylene on the metal binder, and the adjacent side sections - on organic. Sources of information taken into account in the examination 1. Copyright certificate № 346278, cl. From 04B to 31/16, 1970.