Wyniki wyszukiwania - BazTech

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Influence of post-processing on the accuracy of fdm products

Kuczko W., Górski F., Wichniarek R., Buń P.

Advances in Science and Technology. Research Journal

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2017

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Vol. 11, no 2

172--179

EN

This paper presents the assessment of the rapid prototyping finishing techniques for printed components. The aim of the study was to compare the element printed with FDM technology before and after the treatment, using 3D scanning techniques. The object was scanned right after manufacturing, then it was subjected to finishing treatment and 3D-scanned again. The assessment of the results was performed using the GOM Inspect software, based on a comparison between scans and nominal model.

2

Dimensional accuracy of parts manufactured by 3d printing for interaction in virtual reality

Górski F., Wichniarek R., Kuczko W., Zawadzki P., Buń P.

Advances in Science and Technology. Research Journal

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2017

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Vol. 11, no 4

279--285

EN

Realism of a Virtual Reality simulation can be improved by use of physical objects tracked in real time. The paper presents possibility of using low-cost FDM process, realized by MakerBot Replicator 2X machine, in comparison with a professional one to build tooling for a simulation of ultrasound examination procedure. The objects were manufactured on two different machines out of ABS material, 3D scanned for accuracy testing and finally possibilities of their use in a VR system were evaluated.

3

Strength of abs parts produced by fused deposition modelling technology – a critical orientation problem

Górski F., Wichniarek R., Kuczko W., Zawadzki P., Buń P.

Advances in Science and Technology. Research Journal

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2015

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Vol. 9, nr 26

12--19

EN

Numerous experimental studies, including experiments performed by the authors, have shown that the part orientation during layer deposition has a very strong in-fluence on final strength of a product manufactured by additive Fused Deposition Technology. The paper presents the results of tensile, bending and impact strength tests performed on samples of various orientations, made out of ABS material using FDM technology. The results of these tests allowed discovering a unique phenomenon – with the changing orientation, not only the values of strength indexes change, but macroscopic material behavior under load as well. The transition between a “yield point” and “brittle” material usually happens in a certain range of orientation values, named a critical orientation by the authors. The paper indicates supposed ranges of critical orientation for various types of loads

4

Influence of marker arrangement on positioning accuracy of objects in a virtual environment

Górski F., Wichniarek R., Kuczko W., Zawadzki P., Buń P.

Advances in Science and Technology. Research Journal

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2015

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Vol. 9, nr 28

112--119

EN

The paper presents results of studies undertaken by the authors, aimed at determination of character of influence of marker arrangement on real-time measurement of position and orientation of an object, using an exemplary optical tracking system PST-55. Such a system can be used for interaction in immersive Virtual Reality applications. To ensure better immersion of a user in a virtual environment, it is necessary to directly translate its actions into 3D image presented by the VR application. It is possible, among other things, by the application of systems for tracking user’s movements. During the presented studies, an object with infrared-reflective markers deployed on its surface was placed in the center of a rotary table, then it was measured by the tracking system to determine the influence of the object angular position on the accuracy of determination of its position and orientation by the examined device. The measurements were performed for several different arrangements of markers, to formulate guidelines for their deployment on objects used for work in a virtual environment.

5

Application of additively manufactured polymer composite prototypes in foundry

Kuczko W., Wichniarek R., Górski F., Buń P., Zawadzki P.

Advances in Science and Technology. Research Journal

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2015

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Vol. 9, nr 26

20--27

EN

The paper presents a method, developed by the authors, for manufacturing polymer composites with the matrix manufactured in a layered manner (via 3D printing – Fused Deposition Modeling) out of a thermoplastic material. As an example of practical application of this method, functional prototypes are presented, which were used as elements of foundry tooling – patterns for sand molding. In case of manufacturing prototype castings or short series of products, foundries usually cooperate with modeling studios, which produce patterns by conventional, subtractive manufacturing technologies. If patterns have complex shapes, this results in high manufacturing costs and significantly longer time of tooling preparation. The method proposed by the authors allows manufacturing functional prototypes in a short time thanks to utilizing capabilities of additive manufacturing (3D printing) technology. Thanks to using two types of materials simultaneously (ABS combined with chemically hardened resins), the produced prototypes are capable of carrying increased loads. Moreover, the method developed by the authors is characterized by manufacturing costs lower than in the basic technology of Fused Deposition Modeling. During the presented studies, the pattern was produced as a polymer composite and it was used to prepare a mold and a set of metal castings.

6

Zastosowanie urządzeń haptycznych w wirtualnym i hybrydowym podejściu do projektowania

Buń P., Grajewski D., Górski F., Wichniarek R.

Inżynieria Maszyn

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2013

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R. 18, z. 1

18--29

PL

Urządzenia haptyczne znalazły szerokie zastosowanie w inżynierii projektowania, między innymi dzięki zastosowaniu technologii rzeczywistości wirtualnej (ang. Virtual Reality VR). Wprowadzenie zróżnicowanych wrażeń dotykowych pogłębia realizm symulacji w środowisku wirtualnym. Artykuł omawia budowę i zasadę działania urządzeń haptycznych oraz podobieństwa i różnice między urządzeniami haptycznymi a robotami przemysłowymi. Przedstawiono klasyfikację i przegląd urządzeń haptycznych oraz przybliżono możliwość ich zastosowania w hybrydowym podejściu do procesu przygotowania wyrobu do produkcji.

EN

Haptic devices have found a wide range of applications in design engineering, among other things thanks to application of Virtual Reality technology. Implementation of diversified tactile feedback makes virtual reality simulation more realistic. The paper describes construction and principles of operation of haptic devices and similarities and differences between them and typical industrial robots. Classification and review of haptic devices is presented. Possibilities of application of haptic devices in hybrid approach to product preparation for production were also described in the paper.