21/30421388 DC

This standard 21/30421388 DC BS ISO 10791-2. Test conditions for machining centres is classified in these ICS categories:

• 25.040.10 Machining centres

This document specifies, with reference to the ISO 230 series , the geometric tests for machining centres (or other numerically controlled machine tools, where applicable) with vertical spindle (i.e. vertical Z-axis).

This document applies to machining centres having three numerically controlled linear axes (X-axis up to 5 000 mm length, Y-axis up to 2 000 mm length, and Z-axis up to 2 000 mm length), but refers also to supplementary movements, such as those of rotary, tilting, and swivelling tables. Further tests, contained in Annexes A, B and C, cover axes of rotation of spindles, rotary tables and tilting cradles. Movements other than those mentioned are considered as special features and the relevant tests are not included in this document.

This document takes into consideration in Clauses 6 through 9 four possible types of tables, fixed and rotary, as hereunder described:

• Clause 6: horizontal non-rotating tables;

• Clause 7: tables rotating only around a vertical C’-axis;

• Clause 8: tables rotating around a vertical C’-axis and tilting around a horizontal A’-axis;

• Clause 9: tables rotating around a vertical C’-axis and tilting around a horizontal B’-axis.

This document deals only with the verification of geometric accuracy of the machine and does not apply to the testing of the machine operation, which should generally be checked separately. Tests not concerning the pure geometric accuracy of the machine are dealt with in other parts of ISO 10791 .