Machining High-Temperature Alloys by Means of Solid Ceramic End Mills

Russian Engineering Research - The cutting of high-temperature alloys is considered. The performance of solid ceramic end mills is assessed by experimental comparison of five different designs with...     

Shaping the Toroidal Section of End Mills

The shaping of the toroidal cutting section of end mills is considered. Methods are devised for selecting the positional parameters in shaping the helical rake surface on the toroidal section. Relations are established between the geometric parameters of the end mill in the toroidal section.     

Precision of surfaces machined on a lathe with geometric errors

The precision attained in the shape and mutual position of cylindrical surfaces after machining may be assessed by means of a mathematical model. The effectiveness of the model is confirmed in practice.     

Effect of red blood cells on platelet aggregation

This study briefly reviews the model that describes platelet behavior resulting in aggregation and thrombus formation. This is followed by an overview of the basics of the dissipative particle dynamics (DPD), the simulation method adopted here.Details of the numerical simulations is then described and results of these simulations are presented.     

Solid Ceramic Toroidal End Mill

Russian Engineering Research - The possibility of designing solid ceramic end mills with different geometry is considered. A mathematical model is developed for the cutting section of the mill on...     

Processing of experimental data using discretization of their domains

A method for processing observation data based on their discretization and graphical analysis is proposed. The purpose of the processing is to determine and model the functional relationship between the inputs and output of an experimental object. The case of a series of experiments is considered.     

Producing the Front Surface in a Ball-End Mill

Russian Engineering Research - Attention focuses on the production of the spherical front surface of a ball-end mill, close to the transition from the cylindrical section. Analysis of the possible...     

Abrasive tools for hole machining in robotic systems

The operation of a single abrasive grain in internal grinding by a composite abrasive wheel is considered. In particular, the transition from deformation to microcutting is analyzed on the basis of the Kragel’skii criterion.     

Hygienic efficacy in the city design and construction process and the methodological approaches in developing a standards document]

The essence and specific features of marketing are disclosed, based on the results of studies of the drug market. The market of outpatient and hospital services is analyzed using the marketing means. The succession of compartments of the marketing programs applied is presented.