Kinematics of a particular five-axis milling machine can drastically change the machining accuracy. Therefore, the reduction of the kinematics error is an important problem associated with the tool path planning. Our newoptimizationmethod employs a closed formof the kinematics error represented as a function of the positions of the cutter contact points. The closed form is derived from the inve...

The aim of the study is to model cutting edges, front and rear surfaces, pitch teeth surface a milling cutter with variable radius for processing holes an equiaxed contour. In process modeling, method compiling mathematical models technological processes obtaining surfaces parts by was used. As result, equations edges cutter, producing were obtained, parametric constructed, conclusions drawn.

A cookie-cutter strategy to reform science will cause resentment, not improvement.

Recent progress in the study of antigen-antibody reactions of biologicals in agar gel demands improvement of existing gel-cutting devices. For an ideal comparison of two or more antigenic preparations against an antiserum, it is necessary to obtain a critical distance between the ( antigen and antibody cups and to obtain a partial or complete identity of precipitinogen in adjacent cups. However...

The successful detection of a target in a radiological search can reduce the detectability of a second target, a phenomenon termed satisfaction of search (SOS). Given the potential consequences, here we investigate the generality of SOS with the goal of simultaneously informing radiology, cognitive psychology, and nonmedical searches such as airport luggage screening. Ten experiments utilizing ...

Background: Circumcision is the most common surgical intervention performed in non-medical settings. It is the most common but neglected procedure in our country. Barbers, quacks and other non qualified persons perform circumcision by their own methods without proper sterilization and without knowing the consequences. Objectives: The objectives of our study were to determine different methods o...

Nomex honeycomb composites are used extensively in aerospace, automotive, and other industries due to their superior material properties. However, the tool wear during machining can compromise processing accuracy stability of whole process, thus studies on strengthening method urgently needed. This study presents a radial difference calculation (RDC) evaluate disc cutter quantitatively both con...

The levelling of the field surface after shallow tillage with a planar cutter, characterized by such qualitative indicator as combiness, is within limits allowed agrotechnical requirements. We have developed an original design plane cutter for tillage. has various options sharpening angle rack and mortar, which been optimized. Optimal according to criterion minimum energy consumption while obse...