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  • BSI
    BS ISO 3070-2:2016 Machine tools. Test conditions for testing the accuracy of boring and milling machines with horizontal spindle - Machines with movable column along the X-axis (floor type)
    Edition: 2018
    $497.46
    / user per year

Description of BS ISO 3070-2:2016 2018

This part of ISO 3070 specifies, with reference to ISO 230-1 , ISO 230-7 and ISO 230-2 , geometric tests, spindle tests and tests for checking the accuracy and repeatability of positioning by numerical control of horizontal spindle boring and milling machines having a movable column along the X-axis and also specifies the applicable tolerances corresponding to general-purpose, normal accuracy machines.

This type of machines are usually provided with sliding boring spindles and can be provided with universal spindle heads of the following types, whose test conditions are covered by ISO 17543-1 :

  • fixed or indexable heads, with accessory spindle(s) square to the Z-axis, with or without one spindle parallel to the Z-axis;

  • 45° split indexable heads, with mechanical indexing of the different angular positions of the two bodies (e.g. Hirth couplings);

  • 45° split continuous heads, provided with continuous positioning of the two numerically controlled axes;

  • swivel heads, with two numerically controlled rotary axes perpendicular to each other.

Test conditions for accessory facing heads are specified in Annex B.

This part of ISO 3070 concerns machines having movement of the column on the bed (X-axis), vertical movement of the spindle head on the column (Y-axis), axial movement of the ram (Z-axis), axial movement of the boring spindle (W-axis), and, in most cases, one or more tables moving on a bed parallel to the spindle (R-axis) and rotating around a vertical axis (B-axis).

This part of ISO 3070 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.



Standard NumberBS ISO 3070-2:2016
TitleMachine tools. Test conditions for testing the accuracy of boring and milling machines with horizontal spindle - Machines with movable column along the X-axis (floor type)
StatusConfirmed
Publication Date2018-07-18
ReplacesBS ISO 3070-2:2007
Identical National Standard OfISO 3070-2:2016
CorrectsBS ISO 3070-2:2016
DescriptorsTolerances (measurement), Milling machines, Dimensional tolerances, Machine tools, Machine tool components, Drilling machines, Spindles, Horizontal, Verification, Accuracy, Boring machines, Performance testing, Testing conditions, Machine tables, Position, Numerical control
ICS25.080.20 Boring and milling machines
CommitteeMTE/1/2
ISBN978 0 539 01809 7
PublisherBSI
Pages62

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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