Increasing the Reliability of Drilling and Optimization of Modes of Processing Holes in Casing Pipes of Well Filters
The aim of the research is to increase the efficiency of the drilling process by reducing the processing costs and searching for optimal drilling modes for holes in well casing pipes of well filters. In the work the problems of selecting a cutting tool, constructing mathematical models and determining the modes for drilling holes are considered with regard to the design features of the well filters. The paper studies the case when, with an increasing speed, the resistance of the cutting tool is continuously decreasing, the procedure for optimizing the cutting conditions is realized by forming a criterion for the technological cost, taking the first derivative with respect to speed, and equating it to zero. In this case, the non-linear programming method is implemented. The optimum cutting speed and feed rate are calculated during drilling, taking into account the cutting time limitations before the tool change, the number of holes and the reliability of the drilling process.