The peculiarity of additive manufacturing is that steps are formed on the product surface resulting from layered building. steps’ dimensions determined by deviations real its correct shape specified 3D model product. orientation in workspace machine and building step main factors determining sizes steps. article presents results a statistical analysis obtained based model. Industrial products w...

The problem of information system (IS) workspace design is analysed. Different conceptions for IS workspace structure design are overviewed. Conceptions are based on Oracle CASE method, IDEF and UML application approach. The structure of the output driven requirements specification method is described. An approach to IS workspace design based on information flows specification is proposed. Some...

The problem of computing the 3-D workspace for redundant articulated chains has applications in a variety of fields such as robotics, computer aided design, and computer graphics. The computational complexity of the workspace problem is at least NP-hard. The recent advent of parallel computers has made practical solutions for the workspace problem possible. Parallel algorithms for computing the...

Kinematics pertains to the motion of bodies in a robotic mechanism without regard to the forces/torques that cause the motion. Since robotic mechanisms are by their very essence designed for motion, kinematics is the most fundamental aspect of robot design, analysis, control, and simulation. The robotics community has focused on efficiently applying different representations of position and ori...

Parallel mechanisms have many features such as high payload, high speed, high acceleration, high rigidity (stiffness), and low inertia and non-accumulating error, these advantages makes it excellent for machine tool applications. In the present study, the analysis of a category of parallel manipulators for the purpose of designing machine tools is developed. First, the solutions of the inverse ...

In this paper, a new design method considering a desired workspace and swing range of spherical joints of a DELTA robot is presented. The design is based on a new concept, which is the maximum inscribed workspace proposed in this paper. Firstly, the geometric description of the workspace for a DELTA robot is discussed, especially, the concept of the maximum inscribed workspace for the robot is ...

This paper proposes a classification of three-revolute orthogonal manipulators that have at least one of their DH parameters equal to zero. This classification is based on the topology of their workspace. The workspace is characterized in a half-cross section by the singular curves. The workspace topology is defined by the number of cusps and nodes that appear on these singular curves. The mani...

This paper studies the workspace of a six-degrees-of-freedom parallel manipulator of the general three-PPSR (prismaticprismatic-spheric-revolute) type. It is known that a drawback of parallel manipulators is their limited workspace. To develop parallel mechanisms with a larger workspace is of use to potential applications. The mechanism of a three-PPSR manipulator and its variations are briefly...

This paper presents the kinematic analysis and the development of a 4-degree-of-freedom serial-parallel mechanism for large commercial vehicle driving simulators. The degrees of freedom are selected according to the target maneuvers and the structure of human motion perception organs. Several kinematic properties of parallel part of the mechanism under study are investigated, including the inve...