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CONSTRUCTIONAL MATERIALS, PHYSICAL METALLURGY

Larichkin A. Yu., Gorev B. V., Zakharchenko K. V., Kapustin V. I. — Influence of technological shaping process on the fatigue life of the samples from the alloy V95ochT2 (7475)

In connection with improvement of forms of aircraft have become popular methods of forming complex surfaces from rectangular solid plates at elevated temperatures. Compared with the production of prefabricated elements such molding techniques allow to save resources, reduce weight, to get rid of assembly and fitting work on the stage of manufacturing. How different will the fatigue life of products for previously deformed at different temperatures and deformation rates?
The answer to this question is relevant for aerospace industry. The authors of this article conducted a pilot study of the issue. Authors set fatigue life depending on temperature of pre-deformation and strain rate for B95 (Al-Zn-Mg-Cu) pure aluminum alloy.
Key words: processing technique, forming, strain rate, experiment, durability, aluminum alloy, creep, fatigue

SHAPING TECHNOLOGY

Gubanov V. F. — The technology of parts processing by using a concentrated energy and combined surface plastic deformation

The technology including a strengthening effect on the part of continuous laser radiation and surface plastic deformation of the parts by using a rigid smoothing and elastic rolling is introduced. In such a case forms the multi-layer microstructure, including surface layer nanostructure and high-altitude part surface roughness parameters in the nanometer range with a regular microrelief profile.
Key words: laser hardening, smoothing, rolling, multi-layer microstructure, surface roughness in the nanometer range

Iznairov B. M., Vasin A. N. — The technology of thread processing by using a rolling

Shows a synthesis of the most common technological methods of forming screw surfaces. For specific types of forming thread recommendations are given by the values of the setup parameters and parameters the working area.
Key words: technology, carving, processing, rolling, forming, adjustment

MACHINE-TOOL AND CUTTING TOOLS PRODUCTION

Yangirov I. F., Ismagilov F. R., Maksudov D. V., Ziyaltdinova L. F. — Multisection spring electromechanical coupling (MSEC)

An original construction is in-process offered with plenty of sections of a spring electromechanics muff. The generalized mathematical model is made with an analytical decision, the special cases of the got decision are considered. Initial muff we will find a wide use in an engineer, machine-tool construction, electric engineer etc.
Key words: cylindrical spring, sections, inductance, drive moment

SPECIAL TECHNOLOGY

Shchelkunov E. B., Vinigradov S. V., Shchelkunova M. E., Pronin A. I. — A parameter for quantify assessment of the arranging decision for machine tools with parallel kinematics

In this paper a parameter for assessing the effectiveness of mechanisms with parallel structure, which is the ratio of the volume of the technological operationl space to the volume of the geometric operationl space is proposed. This parameter allows to quantify the volume fraction of the technological operationl space in the general geometric space and can be used at the analysis of different arrangement versions for the machine tool with parallel structure mechanism at an early design stage.
Key words: machine tool with parallel kinematics, tripod, operationl space, the divergence angle of the rods

Akopyan M. G. — Spur gears wear 

The article is based on the results of the implemented research of the interaction of the gears. Researches have shown the presence of numerous works devoted to this area. Most of the available jobs are characterized by a large period of limitation. In addition, the actual work done in recent years, do not contain an overall picture of the gears interaction, covering only certain segments of this field of science. In this work the union of available works on the basis of the research. The result of this work was the theoretical determination of the geometric factors influence on the teeth surfaces wear in the meshing.
Key words: wear, gear, the wear of gears, gearing, wear simulation

METHODS OF CONTROL AND DIAGNOSTICS

Latypova E. Yu., Tsumarev Yu. A., Klochkov V. N. — Extending operation resource of pipelines with defects in welded joints

In this paper analyzes the stress state of the pipeline welded joint with the spherical shape defect is analysed. It is determined, that the theoretical stress concentration factor kσ = 2,1 under biaxial loading conditions tipical for pipeline operation, sensing the internal pressure. It is shown that the safe operation of the pipeline in the presence of defects in welded joints can be ensured by setting a band with a guaranteed interference fit, which value should be set so that the maximum operating stress in the defect area did not exceed the destruction limit of the welding seam material.
Key words: vessel, which work under pressure, destruction limit, stress concentration factor, spherical pore, band, guaranteed interference fit, stress state

AUTOMATION OF THE TECHNOLOGY PROCESS TECHNOLOGY AND PRODUCTION, CAD

Ivanov N. I., Borisov P. Yu. — Automatic quality control of T-connections in the process of pressure contakt welding

The automatic quality control method of T-shaped joints based on the largest maximum force developed in the welding area at sinkage of the wire parts is described. The threshold values of the reference interval control parameter are determined. They provide the possibility rejection welds which do not satisfy regulatory quality index criteria. A device for implementing automatic control method at the welding process is described.
Key words: quality control, weld joint, parameter reference interval, control automation

MATHEMATICAL MODELING, NUMERICAL METHODS, PROGRAM COMPLEXES

Alekseev V. A., Kolosov S. P. — Development of a software module of accounting standards boxed time turning parts in integration with MRP/ERP level

This paper discusses the approach, development and functioning the software module in the framework of the valuation time on the turning operation in the whole chain program complex interactive ERP/MRP/CAD/CAM/CAE technologies in order accounting standards piece time for turning treatment of parts in the process the production of the engineering enterprise.
Key words: part, process, stock, surface, technology, CAD, CAD/CAM/CAE, MRPII/ERPII, PDM

ECONOMY AND ORGANIZATION OF PRODUCTION

Zagidullin R. R. — Reducing cycle duration of the production technological preparation

The article describes a method of the cycle duration reducing at technological preparation of machine-building production (TPP). For this the TPP cycle is represented as a network with the shortest route and the TPP parameters regulation for the purpose further formalization is proposed. In the future, the task of the TPP is reduced to the task of the building a work schedule on TPP. A generalized mathematical model of the TPP reduction cycle is proposed. The proposed approach allows simplifying complex tasks decision and using standard mathematical packages.
Key words: technological production preparation, network, critical path, graph, alternative destination coefficient, operations matrix precedence matrix, scheduling, mathematical model, Boolean variables

EDUCATION AND TRAINING

Korobtsov A. S., Rogozin D. V. — The adjustment of the educational program according to specialization "Equipment and technology of welding production"

The actual aspects of improving of educational programs taking into account positions of vocational standards are considered, the components of profile competence passport are grounded, the disciplines adjustment of the educational program for "Equipment and technology of welding " profile is proposed.
Key words: educational program, profile competencies, vocational standard, competence passport

FOREIGN EXPERIENCE

Potapova G. S. — Content of foreign journals

INFORMATION

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