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Machine tools — Test conditions for universal spindle heads — Part 1: Accessory heads for machines with horizontal spindle (horizontal Z-axis)
This document establishes the tolerances or maximum acceptable values for the test results corresponding to general purpose and normal accuracy spindle heads used on different types of machines.
This document specifies several sets of procedures for geometric tests which can be carried out on different types of spindle heads for comparison, acceptance, maintenance, adjustments or any other purpose.
Grinding heads and facing heads are not included in the scope of this document.
This document deals only with the verification of geometric and positioning accuracy of the accessory spindle heads and does not apply to:
— the testing of the machine's head(s) operation (e.g. vibration, abnormal sound noise level, stick slip motion of components);
— the machine's spindle head(s) characteristics (e.g. speeds, feeds and accelerations) which are generally checked separately; or
— the verification of the machining capability under power.
Tests concerning the accuracy of finished test pieces are dealt with in other ISO standards.
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