<abstract xmlns="http://www.w3.org/1999/xhtml">

In order to obtain good quality of the machining surfaces, it is necessary for the cutting tools to be correctly positioned in relation to the workpiece. In the case of turning on CNC machines, the tip of the cutting insert must be placed in the axis of the semi-finished product without additional adjustments on this axis. The paper analyzes the precision of a turning tool because the problem (studied for an insert) can be used for a larger number of inserts placed on more complex tools. The key point that allows the correct design of the insert pocket on the tool body is specified. Also, the dimensional chain on the Y direction of the turning tool and the non-linear tolerance specifications of the cutting tool body have been established.
</abstract>

Faculty of Engineering/Department of Manufacturing Engineering and Management

Precision Analysis of the Turning Tools with Indexable Inserts, Along Y-Axis

<abstract xmlns="http://www.w3.org/1999/xhtml">

In general, a large part of the time is devoted to the design and production of reliable parts where extensive knowledge is required for the design engineers to come up with an optimal solution for the tooling and sheet metal forming processes. Most of the time, the principle of trial and error is used to get the desired shapes for the products. This is because the prediction of deformations occurring in sheet metal elements is not available and is highly dependent on the geometry of the part, the tools and the deformation process. Prediction is limited by the proper location of necking, shear breakage, and puckering of the material. Searching for a robust deformation process by trial and error is expensive and inefficient. The use of numerical simulations provides engineers with an alternative efficiency for developing a tool and process to produce quality parts in a more efficient and lower cost. Computer simulation is an extension of theoretical science that is based on mathematical models. Such models attempt to characterize the physical prediction or consequences of scientific theories. The purpose of this work is to present the way of determining the forming limit diagram by various experimental methods.
</abstract>

Faculty of Engineering, Department of Industrial Machines and Equipment

Faculty of Engineering, Department of Industrial Engineering and Management

Determining the Forming Limit Diagram by Experimental Methods

<abstract xmlns="http://www.w3.org/1999/xhtml">

In this paper, the operation of a two-phase induction motor (TPIM) with non-orthogonal stator windings is studied, in a stationary reference frame. Through modeling and simulation on the Matlab/Simulink environment, the influence of the electrical shift angle stator windings on the magnetic and electromechanical quantities of the machine, in transient mode, will be highlighted. Also, another problem studied refers to the determination of the rotor flux of the TPIM by the estimation method, thus avoiding the use of the flux sensor. It was decided to use estimators derived directly from the machine equations written in motor mode, estimators used in electrical drives with analog control. And in this case, simulation was used to highlight, in a transient regime, the performance of using these flux estimators.
</abstract>

Study of Two-Phase Induction Motor with Non-Orthogonal Stator Windings in Sensorless Systems

<abstract xmlns="http://www.w3.org/1999/xhtml">

Nowadays, there is a high demand for rapid prototyping parts and for products manufactured through plastic cold deformation. Incremental forming process is one of many which presents numerous advantages for fast production of complex shape parts. The purpose of this study is to develop a numerical model through finite element analysis to simulate the incremental forming process. For this analysis a variable wall angle part (VWA) which ranges from a 45° wall angle at the higher base of frustrum cone to a 70° wall angle at the base of the shape was proposed. The numerical model showed where the maximum strains are localized, how big the forces are during the process and how much the material thinned. Although the model does not indicate a possible failure of the material, the integrity of the structural stiffness was altered due to a minimum thickness reached of just 0.26mm.
</abstract>

Numerical Study of a Variable Wall Angle Made of DC01 Steel by Incremental Forming Process

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Acta Universitatis Cibiniensis. Technical Series

 Publishing House and Owner: Lucian Blaga University of Sibiu, Romania  Acta Universitatis Cibiniensis - Technical Series provides an excellent support for the dissemination of the scientific research results conducted by professors, PhD students and other researchers.  Acta Universitatis Cibiniensis was first published in 1997. It first started as a scientific bulletin written in Romanian language and since 1998 submitted papers have been accepted other languages: English, French or German.  Since 2003, after reassessment by CNCSIS, Acta Universitatis Cibiniensis appears as Technical Series, ISSN 1583-7149, with an annual English volume.  In 2014 the first online volume was published by the academic publisher De Gruyter with the ISSN 2668-6449. Since than, Acta Universitatis Cibiniensis Technical Series volumes are available online and a new volume is added annually.  The main subjects covered by the scientific bulletin during its publishing history were:   Advanced Manufacturing Technologies  Mechanical Engineering, Mechatronics and Robotics  Computer Science and Automation  Materials Science and Technology  Academic Education and Management   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 