BS ISO 3875:2020

This standard BS ISO 3875:2020 Machine tools. Test conditions for external cylindrical centreless grinding machines. Testing of the accuracy is classified in these ICS categories:

• 25.080.50 Grinding and polishing machines

The document specifies, with reference to ISO 230-1 and ISO 230-2, geometric tests, machining tests and tests for accuracy and repeatability of positioning axes on general purpose and normal accuracy manually and numerically controlled (NC) external cylindrical centreless grinding machines. It also specifies the applicable tolerances corresponding to the above-mentioned tests.

This document deals only with the verification of accuracy of the machine. It does not apply to the testing of the machine operation (vibrations, abnormal noise, stick-slip motion of components, etc.) nor to machine characteristics (such as speeds, feeds, etc.), which are generally checked before testing of machine accuracy.

This document provides the terminology used for the principal components of the machine and the designation of the axes with reference to ISO 841.