METHODS OF MEASURING GEOMETRIC PARAMETERS OF CUTTING TOOL WEAR

Abstract

In modern instrument manufacturing, the main method of manufacturing instrument parts is the mechanical processing of parts blanks on NSC machines, which require high accuracy of geometric dimensions and surface shape. To measure the accuracy of the geometric dimensions and shape of the surface of the body of rotation, it is important to create relevant information and measurement systems and analytical models for evaluating and predicting possible changes in the parameters of the tools. Such systems and models should be the basis for creating appropriate software for NSC machine tool systems to perform the necessary corrections in the trajectory of the tool movement relative to the surface of the work piece in the machine coordinate system. his will make it possible to compensate for possible elastic deformations of the work piece and thermal deformations of the geometric dimensions of the tool, which, in turn, will ensure the necessary production efficiency. Research and development are relevant and have the characteristics of a scientific and practical task in modern instrument making, related to the production of special purpose devices.

The problems of wear of the cutting tool during the processing of parts were considered. Types of tool wear, causes, methods and devices for wear determination are analyzed. It has been determined that one way to reduce set-up time is to automatically account for actual tool sizes in the control program. With an increase in the accuracy of the tool setting, the machine time is reduced due to the reduction of: idle movements of the cutter holder and "safety zones" - distances provided by the programmer to ensure a safe approach of the tool to the processed surface and its indentation. The combination of traditional and advanced modeling methods allows to reduce the uncertainty of measurements and improve the accuracy of the prediction of shape deviations, which is especially important in the precision manufacturing of device parts, where precise control of geometric characteristics is key.

The creation of precision non-contact means of controlling the dimensional wear of the cutting tool will ensure the production of high-precision parts of the devices.