This paper presents the study results regarding the analysis of the screen printing quality on different types of materials. The quality of the screen printing is determined by several particularities of the screen printing process such as: the type of mesh, screen ruling, ink viscosity, raster spacing, etc. The material which is supposed to be printed is as important as the particularities of the screen printing process itself. The composition, structure and features of the printed items as well as the composition, viscosity and other ink properties, all together determine the quality of the screen printed matter.
A large amount of packaging used mainly in the food industry is obtained by technologies that involve the use of machines such as those that cut with flexible die. The durability of the flexible die is a very important aspect and in this regard the purpose of the research was to identify technologies for its development. Thus, the research considered the analysis of the durability of the knives made of 50CrMo4 steel considering hard chrome-plating treatment, as well as laser hardening of the knives. For the analysis of the durability of the tools, two technological parameters were considered, namely the moment of the tightening force, which had values in the range of 50 Nm–110 Nm, and the die cutting speed, which was adjusted to values in the range of 50–60 m/min. For the analysis of the durability of the flexible die, the wear of the tools was taken into account, as well as the maximum length of the die cut material.
The aim of our study was to identify if the AutoCAD application may be useful for evaluation during active movements of the body segments (lower limb), and how an orthopedic problem influence the normal pathway. The assement of range of motion is still problematic, especially when the body components is moving. Determining changes in the angles of motion dynamic is important in guiding the intervention plan. The evaluation methods are not enough objective all the time and many details could be not observed during different ADL (activities daily living). The AutoCAD (Auto Computer Aid Design) application was a valid instrument in order to realise the biomechanical analyse in case of knee arthritis. The analyze of moving components is possible using video frames and AutoCAD processing.
The purpose of this study is to analyse, by simulation, the injection of ABS plastic parts and track results on piece deformations after the latter was removed from the mould. Injection Process. Analysis was performed using the Autodesk Moldflow professional package. The results of the theoretical analysis by numerical methods are used for optimal design of the die to reduce and eliminate the strains and defect parts.
The paper's purpose was to prove that teaching the principles of client -centred therapy on students from rehabilitation engineering area, is an important step in developing their praxiologic competences. The new qualification, supported by project TEORO -POSDRU/86/1.2/S/63545, "rehabilitation engineering" was developed in a new master degree program, in 3 universities from Romania, were the students are trained to adapt the environment to functional potential of persons with disabilities in order to facilitate their independence in daily activities. The research started from the observation that this kind of tools is not often found on the market. According to client -centred therapy principles, the person with disabilities should be the key point in the reasoning process, because it means that he/she will use the adjustment made by specialist. Our research was focused in the first session, on discovering the client point of view concerning the adapted equipment. The conclusion of this research confirms the hypothesis presented in the paper and from the teaching process perspective, all the students recognized as an important experience their involvement in the experimental research made by questionnaires, interview and results statistics.
Original scientific paper Virtual manufacturing systems can provide useful means for products to be manufactured without the need of physical testing on the shop floor. As a result, the time and cost of part production can be decreased. The paper presents the influence of tool path trajectory on surface deviation geometry when finishing inclined surfaces. The aim of the study is to optimize the milling process taking into account the milling strategy. The research was focused on ball end finishing because it is well known that in plain cutting, in the centre of the flat mill the cutting speed is vc = 0 m/min. According to that, the surface roughness is influenced by the fact that in this area a friction process occurs and not a cutting process. Six types of tool trajectories were simulated and surface deviation was evaluated.
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