Test conditions for numerically controlled turning machines and turning centres - Geometric tests for machines with a vertical workholding spindle1 Scope This document specifies, with reference to ISO 230 1 and ISO 230 7, the geometric tests for general purpose normal accuracy numerically controlled (NC) turning machines and turning centres with vertical workholding spindles, as well as the corresponding applicable tolerances. This document explains different concepts or configurations and common features of NCturning machines and turning centres with vertical workholding spindles. It also

Contents of BS EN 899:

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