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.
The work includes work steps for joining thin sheets with a thickness ranging from1.0 mm (according to EN10327-2004). The study presents the following steps: problems arising from joining with CMT weld-brazing process of galvanized low-carbon steel sheets, used as filler material CuSi3. This is due to the fact that copper induces: grain refinement by lowering the transformation temperature and precipitation hardening after rapid cooling and tempering the theoretical and experimental study of these problems leads to the possibility of combining copper with iron. This is an experiment to investigate the formation of interlayer containing intermetallic compounds, inter layer located between the molten material and the base material. An important part of the study was the optimizing of weld-brazing parameters: welding current, welding speed and dynamic correction factor Ina.Keywords: galvanized sheets steel, joining, weld-brazing CMT, preserving the zinc layer, intermetallic layer.
The 8D Report is a method used by engineers and other specialists to solve product or process problems. The purpose of the report is to identify, correct and eliminate recurring problems. The 8D report sets out permanent corrective actions based on the statistical analysis of the problem as well as the origin of the problem. This type of report has been developed by Ford Motor Company and has become a standard in the automotive industry, especially used to solve customer complaints about non-compliant products. The name of the 8D report comes from “8 Disciplines”. These 8 disciplines are actually 8 points that delimit the steps you take if a problem or defect is observed in a process or product. Solution stages are: choice 8D team identification and responsibilities, problem description, defining of the control actions, cause analysis, defining the corrective actions and demonstration of efficacy, the implementation of corrective actions and demonstration of effectiveness, Prevention of recurrence of nonconformities and completion and signing the final report 8D.
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