No matter how we call it: additive manufacturing, fast manufacturing, fast prototyping, fabrication in layers or DMF (desktop manufacturing) manufacturing, 3D printing is rapidly developing due to the diversity of applicability areas. In this paper, we would like to introduce the way of realizing a bionic hand that imitates human hand movements with the help of the 3D printer. The actual function that can perform is the movement of the finger segments for closing and opening the fist. The imprint was made using the Creality 3D Direct Store 3D Ender 3 3D Printer Original. As components, we have the handprint, the print of servomotor holder, the Arduino uno board, the breadboard, 5 actuators, male jumpers and fishing thread for ligaments. For programming, the integrated development IDE environment based on the Processing project has been used, which includes support for the C and C ++ programming languages.
This article presents a modern, e-learning method designed for the study of the draw frame for processing cotton fibers, blends of cotton and chemical fibers or chemical fibers cotton types. It exposes a new teaching and learning approach of the laboratory for subject Processes and Machines in Cotton Spinning Mill comprised in the academic curricula of the 3rd year students, specialization Technology and Design Textile Products and subject Processes in Spinning Mill comprised in the academic curricula of the 2nd year students, specialization Economic Industrial Engineering. The draw frame is placed after card machine or after combing preparation system for combed yarns. The role of the draw frames is to increase the uniformity of the bands through the doubling effect of the bands, when a doubling of 6 or 8 is used and to increase the quality of the bands by straightening the fibers. The work is accomplished in Power Point aiming to capture the attention of the students. Besides, the transition from chapter to chapter or to additional relevant aspects within a chapter is carried out by means of hyperlinks. The kinematic and technological schemes developed on Autocad serve to calculus, kinematic and technological, and facilitate a better understanding of the functioning of the machine, part of the machine or different mechanisms. Supplementary, several images, audio and video files support the learning and understanding process. The video material derive from personal records or from processing available movies in the public space, www.youtube.com, using Adobe Premiere Pro CS6 software. For each kinematic or technological parameter to be calculated, the respective kinematic chains are identified by changing the properties of the respective entities (kind, thickness or color of gears). The paper can be accessed from the official website of the university, http://www.uav.ro/, by accessing the platform on https://core.uav.ro/ containing all the bibliographic materials uploaded for university students are. The access requires a username and password, both for teachers who publish information and for students as users.
Nowadays, all the more we witness to a rapid technological development and the entanglement of information technology in the formation and maintenance of human connections. As a consequence, the educational system must comply with the current flows. The use of information and communications technology in education exerts a crucial function in increasing the learning process and augmenting its efficiency. Taking into account these premises, we develop a novel approach for the study of a subject of textile metrology. Laboratory practices are fundamental in teaching and learning Metrology by enabling students to acquire practical skills through measurements which allows a more thorough comprehension of the delivered content. Design of this laboratory represents a challenge from the perspective of learners and teachers as well, since it aims to address all learning styles and enhance student's motivation. The laboratory combines a face-to-face teaching and online learning in a blended learning framework, by combination of text based learning with audio-visual support. The virtual laboratory will provide an exhaustive content comprising a description of the dynamometer, measurements that can be accomplished, determined parameters for fabric tensile strength testing, sample preparation and procedures. In order to attract student's attention, the presentation is performed in Power Point. Furthermore, hyperlinks ensure the transition from unit to unit or to other significant issues within an unit. After measurements, follows the calculation and statistical - mathematical processing of the values, according to the applied standards. For the calculation of typical survey values like arithmetic average, dispersion, standard deviation, coefficients of variation, kurtosis and skewness, we use the Excel program. These obtained values will be imported into Power Point and will be compared with those provided by the device, knowing that the device has a touch screen console for control, adjustments and for displaying of measurement values.Thus, this approach can be used either to train students prior they conduct hands-on measurements or after to deep their knowledge. By using this approach, the learning process can be supported independent of the student's location and available infrastructure. The connection occurs via phone, computer etc. from the official website by accessing the university platform on https://core.uav.ro/ .
The present paper proposes the presentation through a modern e-learning method, in the discipline of Mechanics, determining the speeds and accelerations at different types of mechanisms. We use visual presentation methods, combined with explanations in the form of text. This determination of speeds and accelerations is performed using the graph-analytical method of Euler. PowerPoint was used to present the lab work. Hyperlinks have been created between different slides, creating references to other slides to provide sufficient information about the lab work. There is an interconnection between the chapters of the paper, to facilitate the development of the laboratory without losing the student's attention. The present paper can be accessed from the University's SUMS platform (https://core.uav.ro), each student having access using their own username and password. AutoCAD Mechanical Desktop was used to create the graphical part. In the paper it is assumed that the mechanism is a desmodrome, the movements of all kinematic elements and couples are known. The driving kinematic torque is materialized by a three-phase asynchronous electric motor, the students will determine the speeds and accelerations of the elements of the mechanism in different positions. The velocity vectors will be constructed, for each element separately, thus obtaining the center of the instantaneous rotation, by means of which the instantaneous speeds of the elements of the mechanism can be determined. General competences pursued are: identifying the data that intervenes in the problem and the relationships between them, elaborating the algorithms for solving problems and implementing the algorithms in a programming language. Specific competences: description of a succession of operations that are obtained from the input data and the output data, the analysis of the problem statement and the establishment of the steps to solve the problem, the representation of the algorithms in the word and the final drawing. observing the principles of structured programming in the process of elaborating algorithms, identifying the need for structured data and processing structured data.
This paper presents a modern, e-learning method designed for the study of the ring spinning frame for processing cotton fibers, blends of cotton and chemical fibers or chemical fibers cotton types. It envisages a new teaching and learning approach for the laboratory of subject Processes and Machines in Cotton Spinning Mill comprised in the academic curricula of the 3rd year students, specialization Technology and Design Textile Products, by combination of text based learning with audio-visual support. The ring spinning frame is placed at the end of the technological flowchart for processing of cotton and cotton blends for manufacturing of classic yarns. Within this machine the roving resulted from the roving frame is transformed into yarn. The main operations carried out in the spinning process comprise: drawing of roving, twisting of the fibrous and winding of yarn on the pirn. The work is done in Power Point aiming to capture the attention of the students. Besides, the transition from chapter to chapter or to additional relevant aspects within a chapter is accomplished by means of hyperlinks. The kinematic and technological schemes developed on AutoCAD serve to calculus (kinematic and technological) and facilitate a better understanding of the machine functioning, part of the machine or different mechanisms. Supplementary, several images, audio and video files support the learning and understanding process. The video material derive from personal records or from processing films available in the public space, www.youtube.com, using Adobe Premiere Pro CS6 software. For each kinematic or technological parameter to be calculated, the respective kinematic chains are revealed by changing the properties of the respective entities (kind, thickness or color of gears). The paper can be accessed from the official website of the university, http://www.uav.ro/, in the platform https://core.uav.ro/ containing all the bibliographic materials uploaded for students. The access requires a username and password, both for teachers who publish information and for students as users.
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