The presented research is designed to meet a particular challenge facing the industry. Its aim is to automate the process of friction coefficient determination, using a method that enables quick and easy repeatability of measurements developed by S.C. Plasmaterm S.A in Târgu Mureş.
The Mixed CAD Generating Method, developed by the first author and presented in previous papers, is able to generate gear teeth gaps from a special points cloud. The generation method requires only a few specific points from the cutting edges of the generating tools. These points can be obtained in a first approach through a simple drawing of the cutting edges. The drawings can use either mathematical equations, or simply the construction and design principles of the cutting tools. In the case of multi-edge cutting tools of a higher level of complexity, or in case of the absence of the edge equations, there exists a simpler approach. It consists in building a solid model, or obtaining the solid model of the tools from the tool’s designer or manufacturer. In these cases, the generating points are downloaded from the solid model. This paper presents two possibilities of obtaining these points with usual CAD methods.
Today’s industry relies not only on raw material processing, but also on information. The huge amount of data obtained during the production process of goods and services; as well as information about the context of the production processes has made it necessary to account for, methodize, analyze and react in order to achieve a competitive market share. Fortunately, this technological leap has been able to support the above process, but the presence of those new technologies requires adequate preparation from the point of view of human resources too.
In this paper we present laboratory equipment for illustrating the operation of spraying nozzles. It is also suitable for studying the basic processes of spraying and for measuring and evaluating the methods used in the control of sprayers. The equipment allows the monitoring of the spray film formed by the nozzles, measuring the yield of the nozzle and determining the size of the droplets formed. In the dissertation, we explore the factors influencing the droplet size. We compare the average diameter of droplets formed by the three hydraulic principle nozzles. Based on the average droplet diameters, the operation of the spray nozzles is analyzed and conclusions are drawn.
The article presents some results of a larger study of crisis management in the automotive supply industry. This paper studies human - machine communication during organizational crises, an issue that can make the difference between success and failure. The topic is even more challenging in the highly standardized and regulated automotive industry. Using some methodologies taken from social sciences, we analyse the manner in which employees in the automotive supply industry handle unforeseen events. In spite of the increased number of standards and regulations, employees display ambiguous behaviour during unforeseen events, affecting trust in human-machine communication.
This paper deals with the geometric built-up of a theoretically profile errorless shaper cutter. Its proposed rake face is a cylindrical surface for each tooth. The setting parameters of this are the axis inclination angle and the grinding wheel’s radius. The possible domain of the setting parameters is computed from geometrical restrictive conditions. The proposed numerical evaluation consists in the computing of the orthogonal rake angle variation, together with the deviation of the generating pro-file from the perfect involute. The obtained results allow the formulation of some conclusions regarding the influence of the cylinder radius and the axis inclination: the best rake angle distributions are obtained when using increased radius values, while profile deviation becomes minimal when using smaller radii and axis inclination angles.
The high efficiency of turbocompressors makes them ideal for supplying larger mines with com-pressed air. As the gas flows through the compressor, the pressure increases, generating a large amount of heat. This heat needs to be removed, and this is usually achieved through cooling towers and it ultimately escapes into the surroundings as waste heat. This article aims to study the recovery and possible use of this waste heat.
In this work, the authors give an overview of the advancement of industrial robots and show the mechanization of welding processes, step by step. As manual welding is a physically exhausting professional work, engineers have sought to improve work conditions since the industrial revolution. Unfortunately, even today, many procedures can only be performed manually. In the welding process, the highest level of mechanization is represented by the use of robotics. The entrance of Robots in the history of welding is recent, though their spread and development are rapid.
Today’s architectural and civil engineering design is almost inconceivable without collaborative tools. Building Information Modeling supports this with a set of collaboratively usable data. The roots of this concept go back in the past, thus the present paper attempts to depict some of the milestones in its evolution.