SU1151402A1 - Electrode-tool - Google Patents

Abstract

ELECTRODE TOOL for electrochemical machining, made in the form of a cylinder with a central channel for supplying electrolyte and a working end with a spiral groove, whose pitch does not exceed the width of the working end, characterized in that the groove is made with decreasing depth from the center to the periphery of the electrode tool, and the depth of the groove at the center exceeds its width by 4-5 times, and at the periphery by 1-2 times. ate figure 1

Description

one

The invention relates to electrophysical and electrochemical processing methods and, in particular, relates to the design of an electrode tool for dimensional electrochemical processing.

The purpose of the invention is to improve the productivity and quality of processing by equalizing the hydrodynamic parameters of the electrolyte flow in the interelectrode electrode.

The goal is achieved by creating an electrolyte backwater due to the decreasing depth of the groove from the center to the periphery and the rotation of the electrode tool in the direction opposite to the spiral approach path.

In addition, the spiral groove creates turbulization of the electrolyte flow, which also leads to equalization of the properties of the interelectrode medium, increasing productivity and quality of processing. The ratio of the width and depth of the groove is selected from the experimental results.

FIG. 1 shows the electrode-tool, longitudinal section; in fig. 2 is a view A of FIG. one.

The tool electrode has a hollow body 1 with holes 2 for supplying electrolyte. At the working end of .3, a groove 4 is formed, having the form of a spiral.

Electrode tool works

following way.

When flashing the cavity to be processed, the electrode tool is ea514022

give rotation in such a way that the direction of rotation is opposite to that of the spiral groove. If we consider the longitudinal section of the rotation of the tool electrode, then the groove 4 will, as it were, constantly move along the end 3 from the periphery to the center of the tool electrode. This creates backwater and forms a turbulization of the electrolyte flow in the working gap, which intensifies the anodic dissolution, leading to an increase in the productivity of the process, the quality of the processed surface and the accuracy of processing.

Example. An annular groove is machined with a width of 15 mm and a diameter of 60 mm to a depth of 40 mm. The processed material is a heat-resistant nickel-based alloy. When the annular groove is machined with a known electrode tool, the laboriousness of the operator is 25 minutes, with the groove bottom having a slope, the groove has a large camber of the side walls with high surface roughness. When processing the same groove with the proposed electrode tool with a varying depth of the spiral groove; at the center, 3 mm wide, 12 mm deep, 3 mm at the periphery, 3 mm deep, 3 mm pitch. The processing time is 10 minutes, the bottom of the groove has a slight slope, small camber of the side walls.

Claims (1)

ELECTRODE TOOL for electrochemical processing, made in the form of a cylinder with a central channel for supplying electrolyte and a working end with a spiral groove, the step of which does not exceed the width of the working end, characterized in that, in order to increase productivity and processing quality, the groove is made with decreasing depth from the center to the periphery of the electrode-tool, and the depth of the groove at the center exceeds its width 4-5 times, and at the periphery 1-2 times. SU ... 1151402 Fi & .1