Metalloobrabotka № 4 (82)/2014

Processing Of  Materials By Cutting

Zhukov E. L., Kozar I. I., Kolodyazhnyy D. J. Managing the process of forming chips during machining of hard metals and alloys

This article includes the information about the solution of the essential problem of machining — the reliability of this process. The using of special lathe tools with different «chip-breakers» solves this problem. Obtainers the dependences which determine the conditions to crush the chip. Presents the method of determining of the conditions of coup for plates with spherical bumps and plates in the form of grooves.

Keywords: chip formation process, turning, special lathe tools, crush the chip, plates with spherical bumps and in the form of grooves.

Metal Forming

Basyuk S. T. Capsular upsetting and deformation shift

We have analyzed the semi-finished cylindrical works hot pressing methods combining powder metallurgy elements with elements of deformation technologies. The hot pressing of pre-pressed billets made from discrete materials: powder, granular, crushed etc. and castings placed in a metal capsule allow to obtain the density up to 0.98-0.99 of a solid material density and eliminate internal discontinuities of castings appearing during their solidification. All this provides the high quality of the semi-finished products.

Key words: capsule, cylindrical work, deformation zone, shift, disalignment, upsetting, pressing, extrusion.

Electrophysical And Electrochemical Processing Methods

Haldeev V. N., Makarov M. N. On the problem of torch component of the gas discharge energy

The contribution of the energy component in the erosion of electrodes in significant. However a com­putation of its parameters is of significant difficulties. In the paper an attempt is undertaken to derive expressions of the torch energy component, convenient for computations.

Keywords: electroerosion processing, torch component, discharge.

Sokolov Y. A. Structurally-par ametrical optimization of process of layerwise synthesis of products by electronic beam

The present article explains questions of structurally-parametrical optimization of process of layerwise products' synthesis by electronic beam. The effective decision of applied problems in many respects depends on choice of optimal processing practices.

Keywords: mathematical modeling, synthesis of products, electronic beam, optimization.

Baron Y. M. Technology of blanks deburring in magnetic field

Burs are formed on edges of blanks at cutting down and at processing of them by cutting, and removal of the burrs requires a lot of manual work. The blanks usually have small rigidity, and it especially complicates removal of burrs. In the paper the research results are reflected, what directed on intensification of the magnetic abrasive deburring process without deformation of flexible blanks. The high result — the burrs removal on a blank contour for 3-10 seconds of processing — was received by optimization of the work area form and of number other conditions of processing. The result was received for the first time and it is recommended to use in an industry.

Keywords: blank, magnetic abrasive deburring, experiment noncorrosive steel, a work area form, allowance, high productivity.

New Materials And Production

Muratkin G. V. Investigation of the dressing method effect

The results of theoretical and experimental research are presented to prove demonstratively the benefits in obtaining the high level of dimensional stability of shafts of the dressing by Superficial Plastic Deformation (SPD) against the dressing by elastoplastic bending and stretching. It was found theoretically and proved experimentally that there is a possibility to prolong the process of development of operational bending deformation within tolerance by creation of the residual bend of the part axis by SPD dressing.

Keywords: nonrigid parts, processing residual strain; parts' dressing, dimensional stability of parts, stress relaxation.

Uvarov M. M., Magdiev R. R. A method for fine-tuning the manufacturing process of the part of the roller-screw with the swiss-type authomatic lathe

The present article describes the method of fine-tuning the manufacturing process for a complex item at the swiss-type automatic lathe. The method was designed in the company «Diakont». This method can be used to fine-tune every complex manufacturing process.

Keywords: instrumentation, experience, roller-screw, lathe, fine-tune.

Practical Experience

Vasil'ev N. S., Pompeev K. P. The place of the system Vercuit is in the technological preparation of the modern production

The article describes the role of VERICUT software and its application using technological equipment for multi-axis machining in the manufacture of highly engineered components in enterprises is described in the article.

Key words: VERICUT, NC program, 5-axis.