Consideration of hydraulic limitations in setting the mode parameters of combined piercing the holes

Svetlana Vasilevskaya,S Bratan

doi:10.1051/matecconf/201929800141

Svetlana Vasilevskaya, S Bratan

Open Access

https://doi.org/10.1051/matecconf/201929800141

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Abstract

The paper considers the hydrodynamic limitations in the combined machining, caused by the non-rigidity of the tubular cathode-tool. It is shown that increasing the inertia moment of the cathode-tool cross section is possible only in decreasing the diameter of the hole for pumping the electrolyte. It should be noted that reducing the diameter of the hole increases the hydrodynamic losses of the electrolyte flow in the hydraulic path and, as a result, leads to a significant reduction in the range of the mode regimes. Thus, to implement the combined piercing of deep holes of small diameter, it is necessary to quantify the hydrodynamic limitations in using the tubular cathode-tool of significant length to establish the mode parameters.

Highlights

Modern problems of forming the surfaces of small diameters are connected, first of all, with developing small parts both in traditional branches of machine building, tool engineering, automobile industry, aircraft engineering and in medicine - in creating different types of prosthetic implants
The necessity of forming the surfaces of small diameters in materials difficult to process excludes the possibility of using traditional methods of processing, the methods of mechanical cutting
The paper under consideration is devoted to studying the influence of limitations in processing, caused by the non-rigidity of the cathode-tool, and to the quantitative evaluation of the mode regimes both for electrochemical and combined piercing of deep holes of small diameter

Summary

Introduction

Modern problems of forming the surfaces of small diameters are connected, first of all, with developing small parts both in traditional branches of machine building, tool engineering, automobile industry, aircraft engineering and in medicine - in creating different types of prosthetic implants. It is proved experimentally that due to the electrochemical process it is possible to use the electro-erosion component in implementing high-voltage pulses in the inter-electrode gap when the electrolyte is the technological medium.

Results

Conclusion