An analysis of linearization errors in multi-axis APT-based programming systems

Autor: J. Vaidyanathan, D.H. Norrie, O.R. Fauvel
Rok vydání: 1990
Předmět:
Zdroj: Journal of Manufacturing Systems. 9:353-362
ISSN: 0278-6125
DOI: 10.1016/0278-6125(90)90043-h
Popis: Multi-axis CNC machine tools, in which spindle orientation may be varied while cutting, are commonly programmed using APT or a closely-related system in order to generate machine control programs economically. In the consecutive passes through the APT processor and the subsequent post-processing in which generalized data is translated into machine-specific code, a particular type of machining error can develop. Such ‘linearization’ errors can cause the surface being produced to be partly or wholly outside the specified tolerances. This paper analyzes the sources of linearization error to find the range of possible deviations from the required system performance. This indicates that higher-order interpolation and contextual processors could reduce the severity of these errors and the associated cost of maintaining tolerances.
Databáze: OpenAIRE