Том 36, № 2 (2016)

The use of a metal plate to simulate pin shaping by deformational cutting is proposed. The influence of the tool geometry on the volume of material removed to form a single pin is considered. Analytical formulas for the cutting angle and the pin length are derived. Experimental data regarding the influence of the cutting parameters on the shape and alignment of the pins are presented

The kinematic precision of a planetary cycloid—pin electromechanical drive for a milling and honing machine is determined experimentally. Recommendations are made regarding the design of precision planetary two-row cycloid—pin gears.

Carburetion in a diesel engine with compressive ignition of the working mixture is considered. An engine with hybrid carburetion is compared with a traditional diesel engine.

The turbine rotor of a system operating on the basis of the organic Rankine cycle may be analyzed by means of approximate coefficients in the polynomial describing the isobaric specific heat of Freon R245fa as a function of the temperature. Calculation of the energy balance confirms the applicability of such systems.

Polymer binder for the manufacture of heavy-duty components by vacuum hot shaping is considered.

Dimensional and shape errors of nickel-alloy components after electrolytic plasma treatment are considered.

Smart control of production in accordance with State Standard GOST R ISO 9004—2010 is based on decisions regarding the modification of the process, its structure, and the control programs for the equipment. A smart system for use in preproduction may be developed on the basis of decision-making support and quality assurance.

The design and adaptive control of a motorized spindle in a multifunctional machine tool is considered. Means of ensuring effective operation of the machine tool are discussed.

An automated system for simulation and control of the assembly of a composite hole-punching tool is developed. It consists of an information system used in preparations for assembly, with decision-making support on the basis of precedents; and modules for simulation and correction of the assembly process.

General information is presented regarding the structure of universal machine-tool attachments. Their main sources of inadequacy are analyzed. As an illustration, the improvement of universal attachments by modification of their contact elements is considered in more detail.

The influence of wire-cut electrical discharge machining on the surface quality of 65Г steel is investigated. With increase in the machining parameters, the depth of the white layer increases, and the chemical composition of the surface changes. (The copper and zinc content increases.) A mathematical model is developed for determining the depth of the modified surface layer and the geometry of the microrelief.

Temperature regulation in the metal-cutting zone is considered. A method is proposed for monitoring the cutting temperature on the basis of a model dependence on the cutting parameters. A dynamic model of the relation between the cutting parameters and the temperature in the cutting zone is established. Models of the elements of the control channel for the cutting-zone temperature are developed. A dynamic model of the control channel for the temperature in the cutting zone is formulated. Recommendations are made regarding the practical application of the dynamic model.