Jozef Torok

Special materials used in FDM rapid prototyping technology application

In this paper are presented information about common and advanced materials used for manufacturing of products by Fused Deposition Modelling (FDM) rapid prototyping technology. In different rapid prototyping technologies the initial state of material can come in either solid, liquid or powder state. In solid state it can come in various forms such as pellets, wire or laminates. The current range materials include paper, nylon, wax, resins, metals and ceramics. In FDM are mainly used as basic materials ABS - Acrylonitrile Butadiene Styrene, polyamide, polycarbonate, polyethylene and polypropylene. For special FDM applications are used advanced materials as silicon nitrate, PZT, aluminium oxide, hydroxypatite and stainless steel.

Verification of a Program for the Control of a Robotic Workcell with the Use of AR

This paper contributes in the form of a theoretical discussion and also, by the presentation of a practical example, brings information about the utilization possibilities of elements of augmented reality for the creation of programs for the control of a robotic workplace and for their simulated verification. In the beginning it provides an overview of the current state in the area of robotic systems with the use of unreal objects and describes existing and assumed attitudes. The next part describes an experimental robotic workplace. Then it clarifies the realization of a new way of verification of the program for robotic workplace control and provides information about the possibilities for further development of created functioning concepts.

Visualization of intelligent assembling process by augmented reality tools application

This article presents possibilities of intelligent assembling manufacturing process by using special tools of the augmented reality (AR) and logical procedures from related areas such as a Computer Aided Design and Planning. These possibilities are implemented in the virtual assembling environment of AR, where engineers and constructors can see important information about an exact position and orientation of the single assembly element that creates a part of the entire assembly structure. By means of this the application of AR allows costumer to see the motion process of single assembly item according to its trajectory and prevents the possible mistakes in the assembling processes.

Definition of Computer Aided Manufacturing Engineering and its place in CA systems chain

Among most developed sections of CAM (Computer Aided Manufacturing) utilization in area of technical praxis there is the generation of different kinds of NC programs for various manufacturing devices. Yet these CAM systems do not affect entire production in a satisfactory way. Therefore there is a need for definition of the systems of Computer Aided Manufacturing Engineering - CAME systems. CAME presents a special part of the CIM area regarding the computer aided systems that concern all the tasks related to the performance of industrial manufacturing.

Precision Assembly Process with Augmented Reality Technology Support

This article presents possibilities of precision assembling process by using special tools of the augmented reality (AR) and logical procedures from related areas such as a Computer Aided Design and Planning. These possibilities are implemented in the virtual assembling environment of AR, where engineers and designers can see important information about an exact position and orientation of the single assembly element that creates a part of the entire assembly structure. By means of this the application of AR allows costumer to see the motion process of single assembly item according to its trajectory and prevents the possible mistakes in the assembling processes.

Verification of Machine Position in Production Plant with Use of Virtual Reality Technology

The aim of this article was to describe the creation of application for the motion capture technology. The part of this contribution deals with the use of virtual reality technology in the many area of life, but it is focused on the engineering area. The next part describes the used software and magnetic device for this application. The practical parts deals with the creation of this application, it describe this proces and shown the results of this created application and how this application is working in the real time.

Open source tools in assembling process enriched with elements of augmented reality

Paper handles with application area of elements of augmented reality (AR) with focus to their implementation in assembling processes. It brings the information about current solutions in these problems and offers closer look to the position and orientation tracking and solutions in area of movement of virtual objects with use of commercial devices working on marker principles. It also approaches innovation in the form of utilization of Open Source tools for determination of orientation and position in real environment. Main part of the article presents the description of new application that uses connection of real data with elements of virtual environments, what creates platform for further progress in area of application of elements of augmented reality. At concrete example there chronological sequence explained in individual steps for creation of new application of virtual reality for support of realization of assembling units. In the end it introduces the possibilities of further development of application possibilities of system.

Visualization of composite lay-up technology with use of augmented reality elements

Paper deals with area of virtual tools that are based on principles of open source philosophy. It considers their utilization for purposes of composite lay-up technology. Virtual software and hardware elements necessary for work in augmented reality environment are described. In the beginning it brings on the general problems of applications of virtual components and composite lay-up process. Further the fundamental philosophy of new created application is clarified and the process called visual scripting is described, which was used for development of new application. It also provides more detailed view on particular logical sections. In these sections necessary data are harvested and compared with values from relevant virtual arrays. From the hardware point of view, new device is developed for adjustment actions of working table. This enables detailed control of any realized manufacturing process. Positioning device can determine and set the position of basic working plane using the commands from computer interface or manual changes. Key information about exact position of individual composite layers are obtained in real time thanks to the built-in sensors. One of them manages the data change of the desk position (X, Y, Z), other checks the rotation around main axis situated in the center of the table. Newly created software consists of 4 main logical areas with data packets obtained from computer and also from external devices. The displaying section then can display the movement process of virtual item (composite layer) according to its trajectory. This paper contributes with new attitude in realization of composite lay-up technology. In the end it considers possible improvements and other application possibilities that should be developed in future research activities.

Devices and software possibilities for using of motion tracking systems in the virtual reality system

In todays time companies very often need to simulate some natural events such as people walking or moving some things from some place to another. This article is focused on the kind of virtual reality (VR) - MoCap - motion capture. Motion capture is the process of the recording of users movements and the interpretation of these movements into the movements of digital model. VR is used too in the design process of workplace. Firstly, the workplace is designed and before real building the different conditions are simulated. Result of this simulation by VR is workplace, which makes provision for ergonomic requirements, because the bad designed workplace increases additional costs and assembling time Currently the most companies try to prepare the projects of new products by simulations and analysis and not on assumptions or conjecture.

New Possibility of Visualization in Mechanical Engineering

3D digitalization is still a very expensive and tedious process to transfer shapes of real object into a digital computer form. New devices are becoming more effective and more precise, but their price declines very slowly. This article offers perspective into the problems of 3D digitalization using a sensing device of favorable price, namely Kinect a motion game controller. This alternative offers scans of components surfaces that are from the viewpoint of precision and quality comparable with much more expensive devices.