مقالههای Larisa Alexandrovna Rybak
توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقالههای نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده میشوند.
نویسنده(ها): Larisa Alexandrovna Rybak، Elena Vladimirovna Gaponenko، Alexey Valeryevich Chichvarin، Vasiliy Borisovich Strutinsky، Roman Alexandrovich Sidorenko
اطلاعات انتشار: World Applied Sciences Journal، بيست و پنجم،شماره۲، ۲۰۱۳، سال ۰
تعداد صفحات: ۶
In this paper we consider the class of machine tools with parallel kinematics, which is based on the use of multi–degree of freedom and multi–threaded rod mechanisms. It is shown that one of their methods to increase accuracy and simplify the management of these mechanisms is the kinematic method of group decoupling of movements. The structure of a manipulator–tripod with six degrees of freedom with a group of kinematic decoupling of movements was offer. For the synthesis and mathematical modeling of the manipulator of parallel kinematics is built 3D– model of the robot arm, tripod in the software package Solidworks, which allows you to obtain the necessary design and technological documentation. With SimMechanics CAD translator model is imported into the software package Matlab. In turn, the programMatLab mathematicalsimulation of the robot arm. With the model are removed data on the position and speed of change in the lengths rods. The general structure of the control mechanism was offered. The data of the mathematical modeling of the dynamics of the manipulator–tripod. The graphs are changing the position coordinates of the working body of the time and position error bars of the manipulator at a time.
اطلاعات انتشار: World Applied Sciences Journal، سي ام،شماره۸، ۲۰۱۴، سال ۰
تعداد صفحات: ۶
The article considers a methodology of manufacturing process design. It contains the parametric and structural optimization elements and based on the dynamic programming method. As a target function is selected the total cost of the technological process. As the technical limitations a vector of quality indicators was chosen. As input parameters the technological modes were used. Effectiveness of the developed methodology is demonstrated by the example of optimization of technological process of manufacturing of electrical machines’ collectors. The manuscript includes the results of theoretical and experimental studies of surface plastic deformation of roller contact surface of the reservoir. Àn empirical model of the formation of roughness of the surface, methodology minimizing surface waviness, the method of ensuring the required hardness of the surface treated is shown.
اطلاعات انتشار: World Applied Sciences Journal، سي ام،شماره۹، ۲۰۱۴، سال ۰
تعداد صفحات: ۶
This article is devoted to improve the accuracy of the final machining of details with complex geometry. Shown that in the processing of complex details of small and large size is the most important task of improving high–speed milling based on the new processing technologies using parallel kinematics machines. In this article considered class machines with parallel kinematics, an example of such a processing unit of the machine. Shown that important problem at creation machine tools with parallel kinematics to provide desired machining precision. The analysis methods for improving the accuracy of machine tools with parallel kinematics and their classification. Defined center of the positioning error of movable platform. Presents an algorithm that allows us to calculate the error caused by tool offset by the force of the cut. Based on the proposed algorithm, a program in Matlab to find errors caused by tool offset by the force of the cut. Received by the program in Matlab were built according linear and angular displacements of the center platform of cutting forces.
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