SU1514593A1 - Face-grinding wheel - Google Patents

Description

The invention relates to the production of diamond-abrasive tools for face machining ring products made of glass, quartz and

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other non-metallic materials.

The aim of the invention is to improve the quality of processing by ensuring uniform wear of the abrasive layer. The abrasive elements are made tapering to the center of the circle, while they are closed along the inner surface of the body, and the side surfaces ^{of the} individual abrasive elements are made in circles, the radii of which are chosen from the ratios K, "

= B; K ₂ = b (1 + b / n), where K, and K _g are raga diuses of convex circles H of the concave side surfaces of the segment, respectively; B is the width of the annular abrasive layer; η is the number of ab- with razivnyh elements. 2 ill. ®

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1514593

The invention relates to the production of diamond-abrasive tools for face machining ring products made of glass, quartz and other non-metallic materials used in optical-mechanical, radio, electronic, instrument-making, and other industries.

The purpose of the invention is to improve the quality of processing by ensuring uniform wear of the abrasive layer.

In Fig.1 schematically presents the proposed grinding wheel, a general view; figure 2 - scheme of the grinding wheel.

The grinding wheel contains a metal body 1, made of cold-rolled tape, on which are fixed abrasive elements 2.

Abrasive elements are formed as follows. A ring is cut out of the rolled stock produced on the MT 1 bundle. The working surfaces of the upper and lower punches are made in accordance with the claims. When the thickness of the abrasive layer of 1 mm abrasive elements are molded to a depth of 0.4-0.45 mm on each side. Thus, elements of a certain shape are applied on both sides of the abrasive layer. Abrasive elements are made tapering to the center of the circle, while they are closed along the inner surface of the circle, and the side surfaces of the abrasive elements are made in circles, the radii of which are chosen from the following

ratios = B; TO one s where k ₁ and the radii of the circles of the convex and concave side surfaces of the segment, respectively; s the width of the annular abrasive layer; η *** number of abrasive elements

and on the inner circles of the annular abrasive layer, the abrasive elements are located without a gap. The surface area of the abrasive segments are 0.85-0.95 square rings.

The grinding wheel works as follows (figure 2).

Three pairs of abrasive wheels usually work. Circles of one characteristic of 2 pieces are installed on parallel parallel spindles. On top of the circle is pressed the processed ring product. Under the action of the clamp, the abrasive wheel bends (see Figure 2), sschchifovyvaya stock from 15 products. As the stock is ground, the circle is aligned, taking the initial position at the end of the cycle. The implementation of abrasive elements tapering towards the center of the circle and at the same time interlocking along the inner surface of the circle; the execution of the side surfaces of the abrasive elements along circles whose radii are chosen from the above ratios,

25 makes it possible to provide optimal conditions for coolant supply and removal of cuttings from the cutting zone at the point of divergence of elements on the periphery of the circle, since when the coolant moves between abrasive elements by changing the width of the gap between them and the formation of a turbulent fluid flow, the products of glass and tool wear removed from 35 work areas. In addition, the closure of abrasive elements along the inner surface of the circle provides for a delay of coolant between them and the formation of a film + emulsion between the abrasive mirrors and the material being processed. All this allows to improve the quality of the treated surface.

The choice of the ratio of the geometrical dimensions of the tool and the individual ab45 razivnyh elements carried out on

Based on experimental data, according to which the tool of the proposed design, due to a decrease in the fill factor in the direction from the center to the periphery of the circle, is characterized by the most uniform wear, does not need to be edited, and therefore is the most economical in terms of diamond consumption.

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Claims (1)

Claim Face grinding wheel, made in the form of fixed on five 1514593 6 housing with the formation of gaps of abrasive elements, the side surfaces of each of which are limited to convex and concave radius curves, characterized in that, in order to improve the quality of processing by ensuring uniform wear of the abrasive layer, abrasive elements in the zone facing the center of the circle are conjugated, the radii of the circles are determined from the formulas K, = b; K, = b (1 + ---) ₇ <η where and K ₇ - the radii of the circles of the convex and concave side surfaces of the segment, respectively; B - the width of the ring abrasive layer; η is the number of abrasive elements.