Historical
ISO 3070-3:1997
Test conditions for boring and milling machines with horizontal spindle - Testing of the accuracy - Part 3: Floor type machines with detached, stationary work-holding table
This part of ISO 3070 specifies, with reference to ISO 230-1 and ISO 230-2, geometric tests, machining tests and tests for checking accuracy and repeatability of positioning by numerical control, on general purpose, normal accuracy, floor type boring and milling machines with horizontal spindle. These types of machine tool are defined in 3.1 of ISO 3070-0:1982. This part of ISO 3070 also specifies the applicable tolerances corresponding to the above-mentioned tests.
These machines can be provided with spindle heads of different types corresponding in most cases to figures
- 4 (spindle head with sliding boring spindle and milling spindle),
- 5 (spindle head with sliding boring spindle and with facing head) and
- 6 (spindle head with ram or milling ram)
It should be noted that this part of ISO 3070 concerns machines which have a movement of the column or column saddle on the bed (X-axis), a vertical movement of the spindle head (Y-axis), a movement of boring spindle or ram (Z-axis) and possibly a feed movement of radial facing slide in the facing head (U-axis). Some machines also have an intermediate saddle having slideway between column and bed to achieve additional movement of the column parallel to the spindle axis (W-axis).
This part of ISO 3070 also includes the work-holding fixed table, an independent but necessary part of the machine as defined in ISO 7572.
This part of ISO 3070 deals only with the verification of the accuracy of the machine. It does not apply to the testing of the running of the machine (vibration, abnormal noise, stick-slip motion of components, etc.) nor to machine characteristics (such as speeds, feeds, etc.), as such checks are generally carried out before testing the accuracy.
International Organization for Standardization [iso]