Open Access Open Access  Restricted Access Access granted  Restricted Access Subscription Access

Vol 36, No 9 (2016)

Article

Synthesis of roller screws

Morozov V.V., Zhdanov A.V., Kosterin A.B.

Abstract

The synthesis of screw gears with specified transfer function is considered. The theory, classification, and design of screw gears are discussed.

Russian Engineering Research. 2016;36(9):703-707
pages 703-707 views

Plates in hydraulic presses with ohmic heaters

Malygin E.N., Karpushkin S.V., Glebov A.O., Karpov S.V.

Abstract

The thermal calculation of plates in hydraulic presses with ohmic heaters permits the determination of the heater parameters and their configuration in the plate so as to minimize the temperature difference over the plate’s working surface. Determination of the surface power of the heater is considered by an analytical method (for axisymmetric systems) and by finite-element analysis (for systems of arbitrary configuration).

Russian Engineering Research. 2016;36(9):708-712
pages 708-712 views

Automated machining of turbine blades

Poletaev V.A., Tsvetkov E.V.

Abstract

A design method is proposed for automated processes used in the manufacture of gas-turbine blades. As an example, the manufacture of stator blades for a gas turbine is considered. A multifunctional numerically controlled grinding machine is used in the example.

Russian Engineering Research. 2016;36(9):713-716
pages 713-716 views

Vibrational machining with torsional spindle vibrations

Ryzvanovich A.Y., Generalov V.A., Kapralov V.V.

Abstract

The use of a pulsed variable-speed drive as a vibrational drive is studied theoretically and experimentally. The design of a transmission with controlled velocity fluctuation is considered.

Russian Engineering Research. 2016;36(9):717-721
pages 717-721 views

Stress and strain concentration in weld-joint flaws

Manzhula K.P., Shlepetinskii A.Y.

Abstract

Finite-element modeling is used to investigate the stress–strain state at the tip of a blunt weld-seam flaw. A multifactorial experiment yields formulas for the concentration coefficients and the stress and strain gradients in elastic and plastic deformation regions of the local zone.

Russian Engineering Research. 2016;36(9):722-726
pages 722-726 views

Thermal distribution in the PTFE–steel frictional pair

Sedakova E.B., Kozyrev Y.P.

Abstract

Research on the wear of a PTFE–18Kh2N4MA steel pair indicates that the heat-distribution coefficient calculated from the Sharron formula for the polymer is too low. The transfer of polymer to the steel must be taken into account in determining that coefficient.

Russian Engineering Research. 2016;36(9):727-730
pages 727-730 views

Burnishing with wear-resistant mineral–ceramic and hard-alloy indenters

Gadalov V.N., Gvozdev A.E., Romanenko D.N., Vornacheva I.V., Kovalev S.V.

Abstract

Means of increasing the wear resistance of burnishing tools with mineral–ceramic and hard-alloy indenters are considered. Indenter designs that optimize the cost and quality of burnishing by means of a rigidly attached tool are discussed.

Russian Engineering Research. 2016;36(9):731-734
pages 731-734 views

Dynamic stability of band saw machines

Kremleva L.V., Malygin V.I., Lobanov N.V.

Abstract

The eigenfrequencies of the flexural–torsional vibrations of band saw blades and the limits of the instability regions are determined as a function of the tool parameters and the operating conditions. Analytical equations describing the dynamic stability regions of the plane form of the band saws are obtained.

Russian Engineering Research. 2016;36(9):735-740
pages 735-740 views

Behavior of heat-resistant alloys and titanium alloys on cutting

Petukhov G.D., Makarov V.F.

Abstract

The properties of heat-resistant alloys used for the manufacture of compressor blades are analyzed. The optimal cutting speeds for titanium alloys and heat-resistant alloys are determined. The dependence of the plastic strain and chip formation on the cutting speed in the broaching of such alloys is established.

Russian Engineering Research. 2016;36(9):741-744
pages 741-744 views

Automated production system for reagents used in water and wastewater processing

Arakcheev E.N., Brunman V.E., Brunman M.V., Volkov A.N., D’yachenko V.A., Kochetkov A.V., Petkova A.P.

Abstract

The development of a high-efficiency automated system for continuous electrochemical synthesis of reagents used in water and wastewater purification is considered.

Russian Engineering Research. 2016;36(9):745-750
pages 745-750 views

Automated 3D modeling of working turbine blades

Ryazanov A.I.

Abstract

A method of automating geometric construction in the Siemens NX system is considered. In UG/Open GRIP interactive programming language, programs are written for modeling the structural elements of an uncooled working turbine blade. The programs are combined in a user application that creates 3D CAD models 70–90% more quickly than traditional NX tools.

Russian Engineering Research. 2016;36(9):751-754
pages 751-754 views

Automated management of manufacturing orders

Kul’ga K.S.

Abstract

Resource management in order-based manufacturing production may be organized in terms of the preliminary, planned, and actual cost of products. Approximate calculation of the preliminary cost of individual items (orders) is ineffective. That considerably impairs plant economics. The preliminary, planned, and actual cost of products may be calculated by means of methods and models incorporated in software for an integrated automated information system at a manufacturing enterprise, which has already performed well in Russia.

Russian Engineering Research. 2016;36(9):755-759
pages 755-759 views

Improving tool life and machining precision in band saws

Litvinov A.E.

Abstract

A device is described for extending tool life, increasing machining precision and productivity, and reducing the noise and vibration of band saws.

Russian Engineering Research. 2016;36(9):760-761
pages 760-761 views

Precision and efficiency of metal-cutting machines

Bushuev V.V., Kuznetsov A.P., Sabirov F.S., Khomyakov V.S., Molodtsov V.V.

Abstract

Approaches to improving the design of metal-cutting machines are discussed. The most important problems relating to the precision, thermal processes, dynamic modeling, and diagnostics of metal-cutting machines are considered.

Russian Engineering Research. 2016;36(9):762-773
pages 762-773 views

Control loops of a supply servo drive

Bushuev V.V., Evstafieva S.V., Molodtsov V.V.

Abstract

The electric motor in a supply drive is analyzed. The model employed takes account of the motor’s electrical and mechanical parameters and permits reproduction of the processes in the control loops of supply drives.

Russian Engineering Research. 2016;36(9):774-780
pages 774-780 views

Recursive model of the blunting of an abrasive grain

Ardashev D.V.

Abstract

An algorithmic model is proposed for calculating the blunting area of an abrasive grain in grinding. The model permits prediction of the blunting of an abrasive tool in a broad range of operating conditions. It is recursive: the nonlinear feedback with respect to the blunting area itself is taken into account. The model permits prediction of the performance of abrasive tools in different conditions. That is especially important in manufacturing today.

Russian Engineering Research. 2016;36(9):781-783
pages 781-783 views

Parametric modeling of ball end mills

Ryabov E.A., Yurasov S.Y., Yurasova O.I.

Abstract

Two approaches to the parametric modeling of cutting tools are outlined. The differences between these approaches are illustrated for the example of a ball end mill.

Russian Engineering Research. 2016;36(9):784-785
pages 784-785 views

Influence of the wire EDM conditions on the cut width

Ablyaz T.R., Lesnikov R.V.

Abstract

The influence of the conditions of wire electric-discharge machining (EDM) on the cut width in the machining of 09G2S steel is experimentally investigated. The relation between the cutting power and the cut width is obtained. It is shown that, with reduction in the power, more thermal energy is concentrated at the machined section of surface, the probability of secondary spark discharges increases, and consequently the cut width increases.

Russian Engineering Research. 2016;36(9):786-787
pages 786-787 views

Optimizing the high-speed drilling of small-diameter holes by core flat drills

Myasnikov Y.I., Pimenov D.Y.

Abstract

A model is developed for optimization of the high-speed drilling of small-diameter holes by core flat drills. Thanks to the structure of the model, the problem reduces to optimization of the process under constraints associated with optimization of the bit’s structure and geometry.

Russian Engineering Research. 2016;36(9):788-790
pages 788-790 views

Reliability in gear shaping

Grechishnikov V.A., Khusainov R.M., Yurasov S.Y., Khaziev R.R.

Abstract

Attention focuses on the maintenance of precision in gear-shaping machines when the time factor is taken into account. A useful mathematical model is described.

Russian Engineering Research. 2016;36(9):791-795
pages 791-795 views