Set forth in article method can be used when creating machines with guaranteed safe operation in case of possible large expenses for repairs. In the method used, the transition from selective statistical distributions (strength, loading and resource) to the parameters of the General population of finite volume. Absolute dependability is ensured if the resource (design) of parts and machines will be slightly larger than the first variational value of some aggregate. Approximate calculations showed that the increase in the price of the car is about 30% at absolute reliability of all machine parts.
Keywords: method, security, absolute reliability, safe operation, the totality of the final volume, the minimum design life, the allowable growth rates
The development of modern shipbuilding industry due to the increasing volume of work and the increased requirements for production technology and installation of marine pipelines. Currently, a number of design and engineering of the industry is developing assembly drawings with coordinates pipeline routes, albums cards with sketches of pipes on which manufacture pipes without trimming work on the ship can be carried out, starting with the lead ship. In addition, for the design of pipelines and delivery of information to run pipes in the processing of widely used computer technology. Developed and implemented advanced types of equipment including pipe bending machines with position controlled to ensure the mechanization of the main and auxiliary pipe manufacturing and processing operations. Calculating costs and full costs, we can clearly see the benefits of the use of the CNC machine. It provides the most efficient operation of shipbuilding and ship-repair enterprise.
Keywords: pipeline, production, installation, cost, laboriousness
In work design and technological process optimization of hammer crusher chipper production is performed. Replacement of material which the product is made of is executed, and machining volume with formation of a number of detail constructive elements is reduced during receiving preparation stages.
Keywords: hammer crusher chipper, optimization, design, technological process, material, preparation, prime cost, annual economic effect
Details are given as for the results of production researches of reliability of Tunnelling Combines KP21, produced by JSC Kopeisk Engineering Plant, in conditions of Almaznaya Mine of Coal Company "Gukovugol" when driving preparatory developments with section up to 16 sq.m and strength of country rock up to 7 units according to Protodyakonov Rock Strength Scale. The obtained data allowed to define average operating time before breakage, as well as to make the list of details and knots having the greatest effect on reliability of the combine. The results processed allowed to calculate numerical characteristics of empirical distribution, which are similar to numerical characteristics of a random variable: ensemble average, dispersion, average quadratic deviation, variation coefficient, etc.
Keywords: tunnelling combine of selective action, reliability, operating time before breakage
Technique of modeling operation of a loader on the basis of method of statistical tests is given in the article and the way of defining current specific expenses connected with operation of loader of a certain design and statement of tasks on their improvement is considered. Modeling the process of loader operation pursues the aim to define specific expenses of consumer on operating the car taking into account casual stream of refusals and restoration of operating state of separate knots and parts of the car at any moment of effective life, with possibility of making decision on efficiency of application of a certain machine design, as well as possibility of forecasting expected indicators of reliability and optimum terms of operation. Basic data and results of comparative analysis of expenses of consumer on operation of serial car 2PNB2 and new sample of MPNK car are given.
Keywords: modeling, method of statistical tests, specific expenses, mine loaders
The paper presents description and analysis of the upgraded felling-skidding machine (FSM). It offers a range of technical solutions for efficiency improvement and FSM using expansion, including fuel chips production and log spurs construction with the wood waste. The creation of FSM with advanced features provides the partial import substitution of machines for CTL logging.
Keywords: felling-skidding machine, modernization, efficiency improvement, logging operations, fuel chips, log spurs
Possibility of generation of porous films with filling of Na-КМЦ polymer with ti powder and boehmite nanoparticles was shown, the temperature of thermal decomposition of developed material was defined: 325° C . It was established that homogeneous pores were formed in films when Shannon entropy achieved the lowest value and chemical composition of composite materials didn't change in curing.The correlation between Shannon entropy and generating of homogeneous cells with radius above 125 micrometers was explored.
Keywords: sodium-carboxymethylcellulose, titan powder, nanoparticles, boehmite
Increase of productivity of processes of sedimentation of coverings on the restored surfaces of details of cars without decline in quality of the received deposit is a main objective on the way of improvement of galvanic processes. Productivity of galvanic sedimentation depends on the size of potential of the cathode and the anode; from concentration of components of electrolyte about a surface of sedimentation (cathode); from uniformity of delivery and dispersal of ions of metal on a sedimentation surface; from quantity of active sites of the cathode; from nature of passivation of the cathode; from temperature of electrolyte and from the speed of the movement of electrolyte in prikatodny space. Very strongly passivating of a cathodic surface limits the possible growth of productivity of galvanic sedimentation. Passivating consists in education on a surface of the cathode of the continuous passive film consisting of hydrogen, products of reaction of metal with electrolyte components, oxygen of air and foreign inclusions. The passive film is almost insoluble and disturbs electrocrystallization process, shielding a cathodic surface. And cathode covering speed a passive film directly depends on density of cathodic current. It is possible to assume that at achievement of some value of density of cathodic current the speed of formation of a passive film will exceed, the speed of delivery of ions of metal to a cathodic surface and origin of crystals of the besieged metal will become impossible. And on the remained active sites of the cathode where the passive film is absent or has the smallest thickness and growth rate, there will be centers of growth of crystals of metal (dendrites) on which there will be a concentration of the main processes of electrocrystallization. That is the cathodic surface of the restored detail will become covered by the local centers of sedimentation of metal – dendrites. The passive film interferes with growth of limit density of cathodic current at which receiving qualitative electroplated coating is possible. Mechanical elimination of a passive film during sedimentation of a covering considerably facilitates process of electrocrystallization and formation of a layer of metal on the processed detail surface, provides increase of uniformity of the received layer of metal and its microhardness, and also will prevent active formation of local sites of growth of dendrites at the high density of current.
Keywords: passive film, adsorption, sedimentation productivity, electrocrystallization, mechanical activation, crystal lattice
The quantity of carbide component in the deposited coating made subsonic and supersonic gas-powder surfacing. The investigations, which revealed that the preferred method is a supersonic gas-powder surfacing in the lower position.
Keywords: supersonic gas-powder cladding, carbide component, protective coatings, subsonic gas-powder cladding microstructure
The article investigates the temperature-humidity characteristics zones "freshness" of household refrigerating appliance. The paper presents the results of measurements of temperature and moisture characteristics in the section "freshness" in refrigerator-freezer «Indesit BIA181 NF». The obtained results of the experiments, experimental studies have shown that the parameters of temperature and humidity of air in the area of "freshness" are in a wider range in comparison with the required their ra-tional values, which is the reason for the decline of quality cold storage.
Keywords: zone ""freshness"", ""zero zone"", temperature and humidity characteristics, household refrigerator, cooling products
Carry to the main advantages of galvanic ways of restoration: possibility of formation of a layer from several micrometers thick to 1-2 mm. metal or a combination of metals with the set properties, restoration "in the size", that is without the subsequent machining, simultaneous restoration of several surfaces and use of a small amount of electrolyte. A number of the devices allowing to provide the demanded conditions is developed for implementation of galvanomekhanichesky sedimentation of coverings. As the activating elements in these devices generally apply abrasive materials which working surface, in the course of work, "is salted", that is it is hammered with cutting products. It considerably reduces efficiency of activation of the cathode and uniformity of the received deposit in view of introduction in the formed layer the activating elements of products of activation. The offered device developed by Zakharov Yu.A. and Spitsyn I.A. it is deprived of such shortcoming in view of application of the activating elements in the form of leaders and the conducted abrasive rollers connected by a belt drive. For elimination of this lack of the existing devices by Zakharov Yu.A. and Spitsyn I.A. (patent No. 2503753) the device was developed for galvanomekhanichesky sedimentation of coverings on internal cylindrical surfaces of details. Difference of the offered device is that at sedimentation of an electrodeposit, the conducting and conducted rollers, being rolled on the activated cathode surface, rotate with various district speed because of their various diameter. As pulleys of leaders and the conducted rollers are connected by a belt drive, to the transfer relation no more than 0,8-0,9, on shaft of rollers there is various district force forcing the conducted rollers to slip rather cathodic surface. It provides better removal of the passivating film and continuous change of the surface of the activating roller contacting to the activated cathodic surface. Thus, the free surface of the activating roller is washed by a channel of electrolyte, being cleared of activation products that interferes with formation of so-called "zasalivaniye" of a wor1king surface of the activating elements (rollers).
Keywords: case detail, restoration, repair, defect, resource way of restoration, car repair production
The technique of carrying out certification of the failed details of motionless interfaces is presented in article on the example of research of case details (transmissions, transfer cases, bridges) the car on technical condition of seats under bearings. It is shown that the majority of cases of transmissions, transfer cases, bridges come to repair with plus deviations of diameter of landing openings.
Keywords: defect, car, interface, certification, maximum deviation, seat, bearing, technical condition
This paper describes the types of digital recording for profiles of parts and tools, their main program operations to be performed to solve problems within the theory of surface geometry generation: transformation of types, writing and reading files, movement on the plane, visualization, approximation by simple lines, representation on drawings, interpolation and editing procedures
Keywords: profile details, tool profile, shaping the surface, procedure, nodal points, Cartesian coordinates, polar coordinates, the profile angle, kink profile
This paper describes profile calculations of the shaper cutter for a splined bushing. The calculations are accompanied by modeling of the surface geometry to discover potential defects in generating the shape of a part and the subsequent editing of the shaper cutter’s profile
Keywords: profile shaping cutter, splined bushing, modeling, potential defects, geometry, rolling, poloidal, forming
Rezultta of development of means for modeling of activity of operators of processing equipment of the enterprises of the motor transport and means of an assessment of a functional state are stated. The software allowing to build imitating models of work of operators and to estimate parameters of a functional state on attention indicators is created.
Keywords: equipment, design, modeling, means
Results of development of expert system of design of the tekhnoloichesky equipment of the enterprises of the motor transport are stated. Within the developed system the device of fuzzy logic for decision-making is used neural networks for implementation of the knowledge base also
Keywords: system, expert, logical block, knowledge base
In this paper developed solid model of the cap of a side bearing. It made of cast iron of (ВАГР-113.00.00.006) Altai steel casting factory (ASCF). We simulated desing technologikal parametrs, wich give casting disinh without casting defects.
Keywords: technology, modeling, pig-iron cap of a side bearing, solid-state model of a pig-iron cap of a side bearing
"Realization of ensuring radiation safety in the projected technological processes of the equipment dismantle when the NPP blocks being taken out of operation is considered. The material is intended for the experts taking part in the development of projects of taking the NPP blocks out of operation."
Keywords: NPP block, taking out of operation, equipment dismantle, technological process, radiation safety, procedures of ensuring radiation safety
When creating robotic technology complex Assembly must choose the right type of robotic arm and the drive to develop and the design of grippers, link manipulator with the accepted technological equipment, to create a system of locks and so on, To determine the required characteristics of manipulative and gripping devices was conducted statistical survey assemblies for structural and technological characteristics of the Assembly and the selected optimum performance of the robot. In paper To synchronize operations to determine the standard time used in the construction of cyclograms, from which one can see the duration and sequence of Assembly transitions. An algorithm is developed to coordinate the work of individual mechanisms to prevent their collision, ensuring the specified relative position of each mechanism at a specific moment in time that defines the time rate of each technology transition
Keywords: robotic technology complex, manipulative device, the gripper, statistical survey, sequence diagram
Method of laser diagnostics of dynamic forms of hydraulic generator rotor is proposed. Measurement of shaft runout to determine the trajectory of the axis of rotation of the shaft. This method allows to measure the surface geometry of the fast moving rotor the hydraulic unit in real time with high precision without interfering with the structure of the generator.
Keywords: laser diagnostics, beating shaft, hydro, triangular sensor trajectory axis of rotation, the geometry of the surface of the rotor
The article presents a method for searching for new technical solutions. The method is based on a functional-technological analysis of a system, including pointing out its separate elements and studying the interaction between them. The efficiency of the presented method is shown on an example of improvement of an increment borer construction. Application of a functional-technological analysis allows bringing technics development to a new level.
Keywords: functional-technological analysis, increment borer, patent, tree age, development matrix
The basic laws of seals and homogenization of powder steel by electrocontact compaction (ECC). Defined process conditions electrocontact compaction (ECC): current density of 36 MA / m², compaction pressure of 380 MPa, the duration of the process 70s that achieve high-density state of the material.
Keywords: electrocontact compaction,zhelezografitovye composition, compactibility, homogenization, porosity, powdered steel, diffusion microstructure splicing current density
In the article the modern technological methods to improve the strength of crankshafts. Proposed experimental scheme of strengthening and stabilizing vibromashining of machine crankshafts. It has been established experimentally that the vibration impact processing is achieved by uniform hardening of the surface layer of all elements of the details, finish and rounding of sharp edges, smooth transitions, the exclusion of non-rigid shafts with leashes in the electoral obkatyvaniem of radius machining of large parts.
Keywords: crankshafts; technological schemes; vibrowave processing; stabilizing handling; hardening treatment
Working out and research of rational methods and means of increase of efficiency of machining when milling end face surfaces of disks, in particular for premachining have been considered.
Keywords: cutting modes, machine tool, methods of metal machining, premachining, the parameters of cutting layer of metal, the cutting force
Improvement of technological process of galvanizing in flowing electrolyte without decrease in its reliability and quality of the received deposit can be carried out by carrying out anode etching of the processed surface directly in the main electrolyte of sedimentation. And, providing such conditions of anode etching at which, the details which are formed on a surface products of reactions easily are removed a channel of electrolyte is possible. For the purpose of identification of extent of influence of technology factors on anode dissolution of the processed surface it is necessary to conduct elektrokhikmichesky researches. The installation including electric was for this purpose developed and made and gidravklichesky speak rapidly. The Elektkrichesky part contains power-supply circuits of an electrolytic cell to the asymmetric variables odnopoluperiodno straightened, dvukhkpoluperiodno straightened by current and straightened by current with the lowered pulsation, and also a chain of heating of working electrolyte. The hydraulic scheme of experimental installation includes: the kisloktostoyky electric pump, pipelines, filters, the device for an electrolytic precipitation of coverings and a bathtub with electrolyte. Electrolyte in a cell moved by means of the electric pump. Giving changed in steps, due to change of diameter of the section through passage of the giving pipeline by means of replaceable inserts. Authors of the device for electrolytic drawing coverings are Zakharov Yu.A. and Spitsyn I.A. (patent No. 2155827). The design allows: to increase the speed of a channel of electrolyte; to carry out activation of the cathode, using energy of a channel of electrolyte; to increase the accuracy of copying of the cathode the activating elements; to use higher density of current and to reduce power consumption of the device. Electrolyte, in the course of sedimentation, was constantly filtered. As filtering material used fiber glass. The filter if necessary it is possible to dismantle and wash out quickly. Such filtering element slightly interferes with a channel of electrolyte, is simple in service, is cheap and quite sufficient. Thus, the offered design of experimental installation allows to conduct necessary researches of process of sedimentation of a zinc electrodeposit for its improvement.
Keywords: case detail, restoration, repair, defect, resource way of restoration, car repair production