BS ISO 3070-1:2007

Foreword
Introduction
1 Scope
2 Normative references
3 Terminology and designation of axes
4 Definition of the machining operations carried out on
   these machines
   4.1 Boring operations
   4.2 Milling operations
5 Special remarks concerning particular elements
   5.1 Spindle heads
   5.2 Tables
   5.3 Steady blocks
6 Preliminary remarks
   6.1 Measuring units
   6.2 Reference to ISO 230-1
   6.3 Testing sequence
   6.4 Tests to be performed
   6.5 Measuring instruments
   6.6 Machining tests
   6.7 Software compensation
   6.8 Minimum tolerance
7 Geometric tests
   7.1 Straightness and angular deviations of coordinate
       axes
   7.2 Squareness between coordinate axes
   7.3 Table
   7.4 Indexing or rotary table
   7.5 Boring spindle
   7.6 Milling spindle
   7.7 Ram
   7.8 Integral facing head
   7.9 Steady block
8 Machining tests
9 Checking accuracy and repeatability of positioning
   by numerical control
10 Geometric accuracy of axes of rotation of tool-holding
   spindles
Bibliography

Describes geometric tests, machining tests, spindle tests and tests for checking the accuracy and repeatability of positioning by numerical control of general purpose, normal accuracy, horizontal spindle boring and milling machines having a fixed column and movable table.

This part of ISO3070 specifies, with reference to ISO230-1, ISO230-2 and ISO230-7, geometric tests, machining tests, spindle tests and tests for checking the accuracy and repeatability of positioning by numerical control of general purpose, normal accuracy, horizontal spindle boring and milling machines having a fixed column and movable table. This part of ISO3070 also specifies the applicable tolerances corresponding to these tests.

This type of machine can be provided with spindle heads of different types, such as those with sliding boring spindle and milling spindle, sliding boring spindle and facing head, or ram or milling ram.

This part of ISO3070 concerns machines having both longitudinal (Z-axis) and transverse (X-axis) movement of the table, a vertical movement of the spindle head (Y axis), movement of the boring spindle or ram (W axis) and, possibly, a feed movement of radial facing slide in the facing head (U axis), and that may include a rotary or indexing table.

NOTE In other parts of ISO3070 spindle ram movement is designated as the Z axis.

This part of ISO3070 deals only with the verification of the accuracy of the machine. It does not apply to the operational testing of the machine (e.g. vibration, abnormal noise, stick-slip motion of components) nor to machine characteristics (e.g. speeds, feeds), as such checks are generally carried out before testing the accuracy.