"Prerequisites for adaptive control of the cutting process for belt grinding with regard to tool bluntness "

Abstract

A distinctive feature of modern grinding equipment is a significant increase in the level of
its automation based on numerical control systems. The desire to mechanize and automate the
processing of complex-profile surfaces of machine parts has led to the creation of a number of special and specialized grinding machines operating by the rolling or copying method using hard
abrasive wheels of various profiles and abrasive tools on a flexible basis (belts, discs, skins).
For the effective use of machine tools, it is necessary to prescribe the optimal grinding
modes, taking into account the specific processing conditions and providing the necessary quality
indicators of the operation: accuracy of parts, surface roughness, absence of burns and cracks, etc.
The article discusses the issues of increasing the productivity of processing while improving
the quality, reliability and durability of mechanical engineering products and the use of new
technologies in production, including those based on abrasive processing. These technologies
include the process of belt grinding of curved surfaces of turbine blades on multi-axis CNC
equipment. This method of processing is intensively developing and belongs to the field of high
technologies, since it allows reaching a new level of production, excludes further refinement of the
surfaces of the blades by means of manual labor.
The results of theoretical and experimental studies of the process of belt grinding of curved
surfaces of turbine blades are presented. The mathematical model of the dependence of the surface
roughness parameter on such variable factors as the grain size of the tape, the pressing force of the
tape and the linear velocity on the surface of the workpiece is reflected.