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The Asymmetric single point incremental forming (ASPIF) is a manufacturing technology with a high degree of novelty. Even if there are a significant number of research results reported in the literature, the industry has not been very enthusiastic to adopt and implement it on large scale. One of the main reasons for that is the lack of specific computer aided techniques and tools, which could be used...
This paper presents an integrated simulation approach for studying the behavior and accuracy of CNC laser cutting machines in different working regimes. Rapid positioning, rectangular corners and circular interpolation regimes are studied. The model of the feed drive is based on transfer function and takes also into consideration the numerical character of the system. Simulated kinematic outputs are...
This paperwork deals with a low-cost actuation solution, based upon induction motors, which was seldom used in the motion control systems, especially for the machine tools feed drives. A simulation approach, based upon a mathematical model of the induction motor, for tuning the controllers of the systems is presented. Experimental researches developed upon a two axes motion control system, both axes...
CNC milling machines are widely used in manufacturing processes. In time, their accuracy is decreasing, which directly influences the accuracy of the manufactured parts. This research proposes a simulation-based method for improving the accuracy of the above mentioned machines, which is suitable to be applied at the shop floor level. A model of the feed drive, using a dc servomotor as actuator, is...
In order to discern structural characteristics for specific activation of four sites, AI and BI on cAK-I and AII and BII on cAK-II, an extended study on a series of cAMP derivatives with large substituents in positions 2, 6 and 8, has been performed. The effect of charged (at pH 7) substituents upon the corresponding receptor affinities has also been investigated. The MTD method was used together...
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