SU831572A2 - Method of working articles - Google Patents

Description

(54) METHOD FOR PROCESSING PRODUCTS

one

The invention relates to metal cutting and can be used for grinding the inner surfaces of parts, mainly of the type of rings of a complex profile.

According to the main author. St. No. 468769 discloses a method for the treatment of products, in which the abrasive mixture is sectionally formed inside the surface to be treated before the formation of dense bars 1.

However, the known method does not provide high performance and quality of surface finish, as to increase the speed of movement of the abrasive bars, an increase in the number of revolutions of the impeller forming bar is required, which on the one hand is associated with technical difficulties, and on the other hand, with an increase in the specific pressure of the bars on the treated a surface that adversely affects the quality of its finish.

The purpose of the invention is to intensify the treatment process and improve the quality of the surface finish by increasing the speed relative to the movement of the dense abrasive bar and the surface to be treated.

The goal is achieved by the fact that the workpiece m is reported to rotate around its own axis in the direction opposite to the rotation of the sectionally compacted bars of the abrasive mixture.

FIG. 1 shows a device for implementing a method for processing an article, a cross-section; FIG. 2 shows section A-A in FIG. one.

When processing by the proposed method, part 1, for example a ring with a profile inner surface, is loaded into a cylindrical container 2, which is connected to the hollow pin 3 of the device. The bars of the abrasive mixture on the machined surface of the part 1 are formed by rotating the spindle 3 of the impeller 4 in the cavity and feeding the abrasive suspension from the vine 5 through its hollow shaft into containers 2 with the parts to be processed 1, the impeller 4 imparts rotation around its own axis at a speed of VK.

The abrasive slurry entering the internal cavity of the impeller 4, under the action of centrifugal forces through the grooves 6 (Fig. 2), is thrown to the machined surfaces and compacted, forming dense abrasive bars moving with high speed the impeller blades relative to the surface of the products being processed.

The workpiece m 1 reports rotation in the direction opposite to the rotation of the impeller 4 with the speed of Um, which increases the speed of the relative movement of the bars of the abrasive mixture and the surfaces to be processed, and accordingly, intensifies the process.

The absence of the need for high rotational speeds of the impeller allows one to achieve high surface finish, since the intensification of the treatment is achieved without increasing the specific pressure of the dense abrasive bars on the surface to be treated.

Claims (1)

Invention Formula The method of processing products according to ed. St. No. 468769, characterized in that, in order to intensify the process and improve the quality of the surface, the processed products are reported to rotate around their own axis in the direction opposite to the rotation of the sectionally compacted bars of the abrasive mixture. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 468769, cl. B 24 B 31/08, 10.07.72. npijSod Hpi / j dvafnfiu HOf // nea / je / a Air