GB/T 17421.3-2009
Test code for machine tools-Part 3: Determination of thermal effects (English Version)

Standard No.: GB/T 17421.3-2009
Language: Chinese, Available in English version
Release Date: 2009
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 17421.3-2009

Scope: This part of GB/T 17421 specifies three thermal deformation tests, namely: - Environmental temperature change error (ETVE) test; - Thermal deformation test caused by spindle rotation; - Thermal deformation test caused by linear axis movement. The thermal deformation test caused by linear axis movement (see Chapter 7) is only applicable to CNC machine tools and is used to quantify the effect of thermal expansion and contraction of the axis on positioning accuracy and repeatability. For practical reasons, the test method described in Chapter 7 is suitable for machine tools with linear axis strokes up to 2000mm. A representative length of 2 000 mm is used for inspection. It should be noted that no specific tolerance values are given for the tests described in this section.

GB/T 17421.3-2009 Referenced Document

GB/T 17421.1-1998 Test code for machine tools. Part 1: Geometric accuracy of machines operating under no-load or finishing conditions
GB/T 17421.2-2000 Test code for machine tools-Part 2:Determination of accuracy and repeatability of positioning numerically controlled axes
GB/T 17421.4-2003 Test code for machine tools—Part 4: Circular tests for numerically controlled machine tools
ISO 1:2002 Geometrical Product Specifications (GPS) - Standard reference temperature for geometrical product specification and verification

2009 GB/T 17421.3-2009 Test code for machine tools-Part 3: Determination of thermal effects