GB/T 17421.2-2023: Test code for machine tools - Part 2: Determination of accuracy and repeatability of positioning of numerically controlled axes

Delivery: 9 seconds. Download (and Email) true-PDF + Invoice.
Get Quotation: Click GB/T 17421.2-2023 (Self-service in 1-minute)
Newer / historical versions: GB/T 17421.2-2023

Preview True-PDF

Scope

This Document specifies methods for testing and evaluating the accuracy and repeatability of
positioning of numerically controlled machine tool axes by direct measurement of individual
axes on the machine. These methods apply equally to linear and rotary axes.
This Document can be used for type testing, acceptance tests, comparison testing, periodic
verification, machine compensation, etc.
When several axes are simultaneously under test, this Document do not apply.
The methods involve repeated measurements at each position. The related parameters of the
test are defined and calculated. Their uncertainties are estimated as described in ISO/TR 230-
9.2005, Annex C.
Annex A presents the estimation of the measurement uncertainty.
Annex B describes the application of an optional test cycle. the step cycle. The results from this
cycle are not to be used either in the technical literature with reference to this Document, nor
for acceptance purposes, except under special written agreements between
manufacturer/supplier and user. Correct reference to this Document for machine acceptance
always refers to the standard test cycle.
Annex C contains considerations related to periodic positioning error.
Annex D describes tests using ball array and step gauge.
Annex E contains least increment step related content.

Basic Data

Standard ID	GB/T 17421.2-2023 (GB/T17421.2-2023)
Description (Translated English)	Test code for machine tools - Part 2: Determination of accuracy and repeatability of positioning of numerically controlled axes
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J50
Classification of International Standard	25.040.20
Word Count Estimation	46,462
Date of Issue	2023-08-06
Date of Implementation	2024-03-01
Older Standard (superseded by this standard)	GB/T 17421.2-2016
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration