The cutting sequence in the optimization of multipass turning operations has not gained much attention in many previous studies. The objective of this paper is to present a novel method to determine the optimal sequence of cutting passes and machining parameters in turning operations with practical constraints. The optimization problem of minimizing the total production cost is solved in two ph...

This paper discusses the selection of tools in milling processes. To carry out this research, it has been developed an expert system based on numerical methods. The expert system, chooses an appropriate tool, between a known set of candidate available cutters. The knowledge base is given by limiting the process variables. They are obtained taking into account, instabilities due to tool-work-pie...

Today, numerical simulation can be used as a suitable tool to measure large quantities that are very expensive and, in some cases, impossible to measure. One of the important issues in predicting rock mass boreability in excavation with full face tunnel boring machines is estimating the discchr('39')s forces for rock cutting. For this purpose, the linear cutting test is  employed. However, limi...

The paper gives an analysis of acoustic-emission signals measured in the course of laser cutting of steels plates DC04 and X5CrNi18-10. Laser cutting is a process in which there can be a wide range of cutting parameters, but nevertheless cutting of plate products can be accomplished. Within the range of the parameters concerned, however, the quality of a cut edge can vary quite strongly; laser-...

In order to achieve profit goals, in a situation of growing competition, and with a decreasing interest rate spread, it is becoming increasingly important for banks to optimise their cost performance. The first requisite for this is to have a reliable, analytical system of cost measurement, especially for those costs which are difficult to determine, like the indirect operating costs. Tradition...