SU1316805A1 - Method of producing grinding belt with programmed arrangement of grain - Google Patents

Abstract

The invention relates to the tool industry, in particular to the technology for the manufacture of abrasive tools on a flexible basis. The aim of the invention is to increase the durability of the tape by increasing its elasticity. To do this, before applying the programmable location of the binder and abrasive onto the substrate, phenol-formaldehyde-resin is applied to the substrate from both sides. Then the tape is rolled in calenders to obtain protrusions and cavities on both sides, after which the cavities are filled with binder on one side, excess binder is removed from the whitespace, and then abrasive is applied to the glue areas. 4 il. § (L with O5 00

Description

one

The invention relates to the tool industry, in particular to the technology for the manufacture of abrasive tools on a flexible basis, and can be used for the manufacture of honeycomb aggregates with dispersed filler,

The aim of the invention is to increase the durability of the tape by increasing its elasticity.

FIG. 1 shows a flow chart for the manufacture of a sanding belt with a programmed arrangement of grains; in FIG. 2, node I in FIG. one; in fig. 3 - grinding belt with software arrangement of grains, cross section; in FIG. 4, the cutting surface of the grinding belt with the arrangement of the grains in the square pattern.

The technological line for the manufacture of a grinding belt with a software arrangement of grains contains a unwinding device 1 with a brake, a guide roller 2, a double-sided glued bearing section 3, a programming section 1, embossing base 4, adhesive baths 5, a single-sided adhesive-applying section 6, a doctor blade 7, an electrostatic chamber 8. For the manufacture of a sanding belt for dry grinding of parts with medium loads (grain size No. 25, a 24A grade abrasive grain material) in the unwinding device 1 (FIG. 1) is installed reels with a paper base 9 of the mark 0-140 and a width of 720 mm, which is braked by a disc brake, is aligned and guided by a roller 2 into the lumen of the programmable section 4 of the embossing of the base according to the grain-spreading pattern square (Fig. 4) with dimensions of the square of 5 mm - 3 mm In order to provide an increased adhesive bond of the adhesive to the paper base, a thin layer of liquid phenol-formaldehyde resin SFG-91 is applied onto the base surface of the adhesive-applied section 3, which is penetrated by pressure. flushes the surface layer, imparting to it and the plastic properties of conductive glue applicator section 6 produces sided coating bases embossed adhesive layer, the liquid filled depressions phenolformaldehyde resin SFF-91. When the base is pulled, the doctor unit 7 removes excess052.

ki glue layer with whitespace areas of the surface of the base, forming the glue plots of the grain placement program. When applying abrasive grains in the electrostatic chamber 8, the grains are fixed only on adhesive prints (Fig. 3).

In order to strengthen and modify the embossed surface layer

base, as well as imparting ductile properties to the base material in the process of deformation, during embossing, the surface layer is impregnated with a melt of synthetic resins

under pressure created by embossing supercalenders.

Use as a program carrier of an embossed supercalender with a certain shape and size

The protrusions and depressions when embossing the base in the process of making the sanding pelt with the software grain placement on a paper or sabotage basis distinguish favorably

The proposed method of making a flexible abrasive tool from the known, as it provides superior strength of grain fixing in the adhesive layer and on the basis of polished sandpaper due to mechanical pinching of the adhesive area and grain in the cell and increasing the adhesive bond area, reducing the bending moment from cutting forces acting

on abrasive grains, especially extreme ones, and causing the grabbing of grains from the bond; protection against binding

intense wear and tear and increase the tensile strength of the base in the longitudinal and transverse directions.

The use of the invention makes it possible to increase the crack resistance of the substrate by creating obstacles in the form of dd1 cells that propagate cracks during rupture and the rigidity of the substrate; simplify the programming of grain placement under production conditions and reduce the relative actual contact area of the non-working surface of the tool with the contact elements of the devices that press the sandpaper to the treated surface and, therefore, reduce the activity of heat sources from the friction forces; create pockets (cells) on the non-working surface of the sandpaper to secure the anti-friction coating, and also increase the efficiency

the distribution of pressure on the cutting grains of the tool working surface. Equal surface relief of the cutting surface is ensured.

Claims (1)

Invention Formula A method of manufacturing a grinding belt with a software arrangement of grains, in which the belt base is fed, on one side of it is nano with glue with a software arrangement of glue plots, and then an abrasive is applied to glue plots in an electrostatic chamber, so that, in order to improve the durability of the tape by increasing its elasticity, fenol-formaldehyde resin is applied on both sides, then on the basis of a rolling mold form depressions, which are filled with glue and abrasive. FIG. 2 IngredientsL, Sergeeva Editor E.Sligan Tehred NL Luaeiko Order 2386/12 Circulation 715 Subscription VNISH1I State Committee of the USSR on business from about 6 cases and discoveries 113035, Moscow Zh-355 Raushsk nab., D. 4/5 Production and Graphic Enterprise, Uzhgorod, st. Project, 4 Proofreader V. But ha