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This paper present the problems of influence of variants of finishing processing on flow of machining parts in flexible manufacturing system. The technological processes for piston rods and rams of hydraulic cylinders. A model variants of technological processes for piston rods finished with the burnishing were also presented. In these studies the influence of technological variants including burnishing...
This article presents the results of the identification of cutting forces for end milling using two mechanical models: linear and non-linear. In these models material factors were estimated on the basis of plots of cutting forces measured with a dynamometer. This paper presents factors determined in the domain of frequency and time. We also compare the adequacy of both models, and analyze forces and...
In this work, a nanocrystalline nickel-free stainless steels have been synthesized by the combination of mechanical alloying (MA), heat treatment and nitrogenation of elemental microcrystalline Fe, Cr, Mn and Mo powders. The process parameters, morphology and microhardness of obtained powders were determined. Phase transformation from the ferrite phase to austenite was confirmed by XRD analysis. Corrosion...
The article presents an analysis of the incremental model building process in the RP methods (FDM and SLA) with regard to the accuracy of construction of aircraft engine blade prototypes. The influence of the orientation of the blade model in the workspace of RP devices on its geometric accuracy has been studied based on a blade model made in the 3D-CAD (Mechanical Desktop) system and converted to...
It is the object of this paper to analyse the directions of the production process streamlining. A system approach and a cybernetic model of "a black box" have found application to this analysis. The guiding ideas and experimental results of an innovative method for internal cylindrical grinding, based on the concept of a single-pass grinding process, were presented within the framework...
Achieving the technological reliability of machining low rigid shafts is essential problem in machine industry. Therefore studies on theoretical and experimental bases of controlling the elastic deformable state of elements during the technological process is very important. The definition of technological reliability of processing low rigid shafts was introduced and also the classification of structural...
The paper deals with a theoretical analysis of curvilinear rotary surface machining (ECM) by a shaping electrode tool of composite motion. The tool electrode motion is a combination of a rotary motion and a motion whose vibration direction is consistent with the tool forward movement. An equation describing the curvilinear rotary surface shape evolution, and an equation of the electrolyte and gas...
Zn-Ni coatings (c.a. 30 wt.% Ni) have been deposited under galvanostatic conditions on a carbon steel substrate (St3S) from an ammonia bath. The corrosion resistance of the obtained coatings was examined using accelerated corrosion test (NSS - neutral salt spray) according to ISO 9227:2007. In order to compare corrosion properties of the as-deposited Zn-Ni coating, Zn-Ni coating after exposure to...
An automatic control system for the air compression plant, composed of seven compressors divided into two groups, was depicted in this paper. The system was designed to integrate the control, monitoring and diagnostic functions into one device and provide the system operator with a complete system control tool. The main purpose of the system was to enable the operator to prevent manual control and...
The methods based on the energy principles were used to determine the Interlaminar Fracture Toughness of selected Fibre-Reinforced Polymer Matrix Composites. In the scope of the presented research were Mode I, Mode II and Mixed-Mode I/II Interlaminar Fracture Toughness of glass/epoxy and carbon/epoxy laminates. Three types of laminates were investigated. Two of them were wet lay-up and reinforced...
In this paper the issues of improvement of the efficiency of automated production systems were analysed. The effectiveness ratios of automated production systems and the results of comparative tests in this scope concerning the single-pass internal cylindrical grinding were presented.
In the present work a controlling method based on fuzzy rule base is proposed. Practical approaches are developed and focused on real time problems related to flexible manufacturing cell. Techniques for design and implementation of fuzzy systems in the framework of control production and quality states are presented.
Machine tool technologies, especially Computer Numerical Control (CNC), High Speed Machining (HSM) have emerged as effective mechanisms in the aerospace, automotive, and die and mould industries. These new technologies are attractive for competitive manufacturing because of their technical advantages, i.e. a significant reduction in lead-time, high product accuracy, and good surface finish. This paper...
This paper presents a sensor based diagnostic system for a cylindrical plunge grinding process which ensures a reliable process state and tool wear identification. A new signal processing technique, i.e. Hilbert-Huang transform (HHT) was evaluated for this purpose based on the vibration and acoustic emission signal measurements. Numerical and experimental studies have demonstrated that the process...
In spite of rapid development of Information Technology there is lack of proper, flexible and inexpensive solutions suitable for integration flow in manufacturing systems. From the beginning of last decade the research have been focused on development of multiagent technology, that allows to build distributed, easy to reconfigure systems based on intelligent modules. A short revive of the state of...
This paper describes an original method for the direct measurement of turning tool wear at the tip of the cutting edge which is performed automatically on an NC lathe with a special probe. The modified probe is equipped with precision displacement sensors. This method of measurement eliminates the errors of touch trigger probes, which are currently used for tool settings and broken tool detection...
The paper presents results of 3D geometric structure of the surface of Al2O3 oxide films generated in the following aluminum alloys: AlCu4Mg1, AlSi1MgMn and AlZn9Si7. There are presented hardness distributions on depth of the oxide film obtained in result of hard electrolytic oxidation, investigation of microstructure of this film with use of the BSE detector, and microanalysis of chemical composition...
The paper presents a new efficient method of evaluation of relevancy of signal features extracted from the wavelet coefficients of raw AE signal while rough turning of Inconel 625. Several meaningful signal features were automatically extracted from band pass signals using 22 different wavelets and used for tool condition monitoring. Accuracy of tool condition evaluation was employed as main criterion...
The paper characterizes the methods of edge detection in the images, which can be used in the reverse engineering system. The method of edge detection by the directional illumination analysis has been shown. Described method is used in the reverse engineering system for preparing the models of the human skulls with holes after the craniotomy, and for designing the skull's prosthesis for cranioplasty...
The paper presents an application of the rigid finite element method to modelling of a flexible link of a manipulator. The modification of the classical rigid finite element method which takes into account only bending and torsion enables us to consider large deflections of the links. In the case when the deflections are small a simple form of the equations can be used. Applicability of the models...
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