BS ISO 19744:2020 pdf free.Test conditions for numerically controlled broaching machines一Testing of accuracy一Vertical surface type broaching machines. BS ISO 19744This document specifies, with reference to ISO 230-1, the geometric tests on numerically controlled (NC> broaching machines of normal accuracy, with vertical axis acting for cutting operation. The accuracy of rotary axes, if available, is checked with reference to ISO 230-7....