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1
Content available Mobile Chipper Design with FEM System Application
EN
Advanced possibilities of using the finite element method (FEM) in the process of designing a mobile chipper were presented. The usefulness of vibration analysis with FEM in assessing the stability of a structure subjected to forces of variable and undetermined frequency was demonstrated. Based on hybrid analytical and numerical calculations, a , the proper accuracy of the calculations was shown and justification of using FEM to calculate the structure loaded with periodically changing forces was confirmed. Advanced possibilities of using the finite element method (FEM) in the process of designing a mobile chipper were presented. The usefulness of the FEM analysis of vibrations in assessing the stability of a structure subjected to variable and unsteady frequency excitation was demonstrated. On the basis of the hybrid calculations - analytical and numerical, the proper accuracy of the calculations was demonstrated and the purposefulness of using the FEM method for the calculations of the structure loaded with periodically changing forces was confirmed.
EN
This research paper contains the plan necessary to implement the Just-in-Time method. The target of research, analysis and implementation of JiT is an enterprise producing agricultural machines, cars, etc. The concept serves as an enhancement of the information and material process. This article demonstrates the process of introducing the selected tool inside a factory. It also highlights the benefits of JiT idea.
PL
Opracowanie zawiera plan niezbędny do wdrażania metody Just-in-Time. Obiektem badań, analizy i wprowadzania JiT jest przedsiębiorstwo produkujące maszyny rolnicze, samochody, itp. Omawiana koncepcja służy usprawnieniu procesów przepływu informacji i materiałów. W artykule przedstawiono proces wprowadzania wybranego narzędzia wewnątrz fabryki. Wyeksponowano też korzyści wynikające idei JiT.
4
Content available remote Postępy w budowie obrabiarek i systemów obróbki ściernej
PL
Trendy rozwojowe obrabiarek do obróbki ściernej. Charakterystyka wybranych obrabiarek i systemów do obróbki ściernej prezentowanych na 15. Światowej Wystawie Obrabiarek EMO 2003 w Mediolanie.
EN
Trends of development of machine tools for abrasive machining. Charactersitics of selected machine tools and systems of abrasive machining presented on the 15th World Exhibition of Machine Tools - EMO 2003 in Milan.
5
Content available remote Struktury inteligentne nasycone światłowodami w budowie i eksploatacji maszyn
PL
Rozległe czujniki światłowodowe zanurzone w kompozycie, w betonie przymocowane do powierzchni dużych konstrukcji stalowych tworzą strukturę wrażliwą - materiał inteligentny. Struktury wrażliwe mogą mierzyć i monitorować temperaturę, wibracje, przyspieszenia i uszkodzenia. Struktury światłowodowe moga mieć zastosowanie w budowie i eksploatacji maszyn i urządzeń.
EN
Widely extended optical fibre sensors embedded in a composite of concrete, fastended to the surfaces of large steel structure create a sensitive, intelligent material. It can measure and monitor temperature, vibration, accelerations and damages. The optical fibre structure can be applied in the building and operation of mahines and equipment.
6
Content available remote Wzaemodija elemeniv byrovogo kompleksu, pobydovanogo na modul'nomu principi
EN
Dynamic processes in mechanical machining of drilling complex, which include drilling derrick, lifting mechanism, column of drilling tubes and impulse-wave device for column dismissing. Calculation model of changeable structure is taken for researching. Dynamic processes are described by totality of ordinary differential equations and equations with partial derivative. Algorithm for computation of extreme routine working of drilling complex is build on using numerical methods of analysis. Wave processes in the column and load of system elements, which are conditioned by impulse, stimulate is for example illustrated.
EN
In work the influence of rigid nonlinear properties of the elastic coupling to transitional operational modes drive of the module is considered. A constructed mathematical model drive of a system with allowance for correlation of mechanical oscillations and electromagnetic apperances in an asynchronous drive. The influence of nonlinearly of rigid performance and factor of a linear resistance of the coupling on a maximum value of loads of single launch to a drive is analysed.
EN
The article deals with control and design modules for creation of elastic deformed state of automated complex with the aim to increase safety and accuracy of the non-rigid parts processing.
PL
W pracy przedstawiono podstawy teoretyczne i zasady projektowania modułów technologicznych przeznaczonych dla dynamicznego demontażu wielkogabarytowych połączeń śrubowych. Proponowane moduły zapewniają bardzo duże momenty skrętne, są szybkodziałające i nie wymagają obecności powierzchni dla przejścia momentu skrętnego reakcyjnego.
EN
The article is devoted to opportunities of placing and fastening of light and middle weight machine tools into track trailer of a van for creation of the mobile machine workshop. Recommendations for choosing of the machine-tool models for reaction of the workshop and it's using far from the plants (for example, in agrian regions) are proposed.
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Content available remote Modul'nye konstrukcii mnogooperacionnykh stankov s ChPU
EN
The article is devoted to the creation of new constructions of Machining Centers (MC) for drilling, boring and milling operations. New structures of MC with perfected instrumental systems allows to raise their reliability and to increase their productivity due to the shortening of tool changing time.
13
EN
The features of modular production process lammellar stators and also constructional circuit of a modular assembly automation, purpose of development - increase of productivity and quality lammellar stators are considered by optimization of package gains for want to welding and centering exactitude.
EN
The article deals with the results of theoretical and experimental research of the influence of internal stresses arising in the processes of turning on shaft warpage, accuracy and operating characteristics of the processed parts.
EN
The paper is devoted to the results of the research of thermal treatment module as a controlled orientated object, mathematical model on the operation and its influence on the shaft processing accuracy as a whole.
PL
W pracy przytoczono model matematyczny taśmociągowego układu rolkowego maszyn drukarskich z uwzględnieniem pasywnych prowadzących wałków. Obliczono dynamiczne i statyczne charakterystyki układu rolka - strefa taśmociągu - prowadzące wałki.
EN
The comparative analysis of theoretical and experimental research of the pneumatic bearing is given for the methematical model of active vibroprotection system. The influence of the damped object mass and gass pressure in bearing on the parameters of the model is analysed.
18
Content available remote Algoritmy postroenija interpolacionnykh modulejj na osnove raznostnykh signalov
PL
W pracy zaproponowano algorytm funkcjonowania oraz metodykę projektowania ogniw dla układów cyfrowego przetwarzania sygnałów i układów automatycznego sterowania urządzeniami poligraficznymi, o małej dyskretności wejściowego sygnału na bazie interpolacji i różnicowego przedstawiania sygnałów.
EN
Problems concerned experimental detemination of dynamic properties of complex structures supporting the bearings of rotary machinery have been presented in the paper. Experiences, aqiured during practical application of known methodology of harmonic excitation on the area of determination of the properties of the huge test bench for investigations of the rotor dynamics and its slide bearings, are discussed. Preliminary concept od application of this methodology and modifications stemming from the accumulated experiences has been indicated. Obtained results have been illustrated by the graphs of modules and phases of flexibility matrix also relevant dstributions of the coefficients of equivalent stiffness and damping coefficients.
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