GB/T 21946-2008Numerical control gear shaving machines - Testing of the accuracy (English PDF)
数控剃齿机 精度检验
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 3, 2008
Implementation date
January 1, 2009
Scope
GB/T 21946-2008 is the English-translated version of 数控剃齿机 精度检验.
GB/T 21946-2008 is the Chinese standard "Numerical control gear shaving machines - Testing of the accuracy". Its scope clause reads: This standard specifies the CNC shaving machine (hereinafter referred to as "Machine") requirements and method of geometric accuracy and precision testing.
This standard applies to the maximum workpiece diameter of 125mm ~ 500mm CNC shaving machine. Its clauses include general requirements.
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Document preview — GB/T 21946-2008
National Standard of the People's Republic of China
- ICS
- 25.040.20
- Classification
- J 56
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
1 Scope
This standard specifies the CNC shaving machine (hereinafter referred to as "Machine") requirements and method of geometric accuracy and precision testing.
This standard applies to the maximum workpiece diameter of 125mm ~ 500mm CNC shaving machine.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 10095.1-2001 involute cylindrical gears accuracy - Part 1. Definitions flanks of gear and allowable values of deviations (Idt ISO 1328-1.1997)
GB/T 17421.1-1998 Test code for machine tools - Part 1. under no-load or finishing conditions Geometric accuracy of machines (Eqv ISO 230-1.1996)
GB/T 17421.2-2000 Test code for machine tools - Part 2. CNC axis positioning accuracy and repeatability of determination (Eqv ISO 230-2.1997)
3 General requirements
3.1
When using this standard should be GB/T 17421.1 of the provisions, especially the mounting accuracy inspection before spindles and other parts air
Turn the heat up, the accuracy of testing methods and tools.
3.2
according to GB/T 17421.1-1998 adjust the machine to install the 3.1 level, the table placed in the middle position of travel, the workbench
Central place dedicated deck, which is placed on a level. Levels in the longitudinal and lateral readings should not be more than 0.04/1000.
Geometric test sequence 3.3 project is in accordance with the arrangement of machine components, it does not indicate the actual test sequence. Inspection, can be generally installed
Split testing tools and testing convenient, arrange inspection order.
3.4
inspection tools, according to the structural characteristics of the standard test is not required in all projects. For the purpose of acceptance testing requirements, the
Users can obtain the manufacturer agreed to choose some interesting test items, but these items must be clearly stated in the test machine when ordering.
3.5
When the measured value with a predetermined length of this standard is not the same, the given tolerance value should be GB/T 17421.1-1998 in 2.3.1.1
Conversion rules, the conversion value is less than 0.001mm, 0.001mm based upon the count.
GB/T 38193-2019 | JB/T 8490-2008 | GB 16454-2008 | GB/T 21947-2008 | GB/T 21945-2008 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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