SU1664538A1 - Method of manufacturing laminated grinding wheel - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to mechanical engineering and to the manufacture of flap abrasive wheels. The purpose of the invention is to increase productivity by reducing the labor intensity of manufacture. The sanding pelt is made as follows: on the basis of the pelt, an abrasive is applied on both sides with stripes in a checkerboard pattern, the pelt is cut perpendicularly to the abrasive strips into tapes, which are crimped and fixed into bags. When corrugating, bends are made on sections of the belt without abrasive, or they are crimped and fix the entire sandpaper in a multi-pack, after which they are rubbed into rows of separate petal packages. 2 Il.

Description

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FIELD OF THE INVENTION The invention relates to mechanical engineering and to the manufacture of flap abrasive wheels.

The aim of the invention is to increase productivity by reducing the labor intensity of manufacture.

FIG. 1 shows the abrasive skin; in fig. 2 - the made package

Abrasive sandpaper includes base 1, on which lanes 2 and 3 are located with abrasive material (from the front and back side). Abrasive bands on the front and back sides alternate in a checkerboard pattern. Width non-abrasive plots

 + + L,

where L is the width of the abrasive area (the length of the working part of the petal);

I is the width of the non-abrasive area;

B - petal width;

2H, skin areas that do not contain abrasive on both sides of the base (non-abrasive skin areas).

Plot 2I is always larger than plot 2h. Section 2H is intended to be fixed in a circle body, and its value depends on the design of the circle. The absence of abrasives contributes to dense packaging. Section 21g is necessary to obtain a high-quality package when shirring. Its size is determined depending on the thickness of the base, the size of the grain and the thickness of the abrasive layer. The larger these values, the larger the section 212. If the corrugation is made without the section 212 on the skin, after bending by an angle of less than 90 °, the grain of each petal (at the bend) will begin to be embedded in the previous one, which will make it difficult to compress the package and get quality form.

Areas 211 and 212 alternate sequentially throughout the skin.

with (J ate with

00

Claims (1)

The li and la portions determine the position of the fold lines during corrugation and pass through the midpoints of the non-abrasive portions 2h and 2I2. The cutting is done in lines K, perpendicular to the abrasive strips. After the corrugation, a package of petals is formed with a one-sided arrangement of abrasive on the petals and a non-abrasive area I (Fig. 2) for securing the packages in the circle body. The packages are fastened in any way, for example with adhesive tape. The invention The method of making a petal circle, in which the abrasive sandpaper is cut into ribbons along the basis of the sandpaper, packages of petals are formed from the ribbons, and then fixed to the body, characterized in that, in order to increase productivity, the sandpaper is applied on which the abrasive is applied with two sides and is arranged in strips to form abrasive and non-abrasive areas, the strips being located across the base of the skins with alternating in chess order one relative to another adjacent stripes located on different sides of the base, while the width of non-abrasive plots is selected by the formula:  + 2l2 + L, where I is the width of non-abrasive areas, mm; 2li, 212 - successively alternating areas of the skin, not containing abrasive on both sides of the base, while And g, mm; L is the width of abrasive sites, mm, after cutting the pelt into ribbons, the shaping of the bags is carried out by corrugating the ribbons along non-abrasive areas, Fold line Thebes 1 Fim