GB/T 25377-2010Check bar (English PDF)
检验棒
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 10, 2010
Implementation date
March 1, 2011
Scope
GB/T 25377-2010 is the English-translated version of 检验棒.
GB/T 25377-2010 is the Chinese national standard for the check bars used to verify the geometric accuracy of a machine tool.
It sets the types of bar, their accuracy classes, their construction and dimensions, the technical requirements - form and position tolerances, surface finish, hardness and marking - and the test methods by which a bar is itself checked.
It covers bars with a Morse taper, a metric taper, a 7:24 taper and cylindrical bars. Machine tool builders, service engineers and metrology rooms use it when they accept or align a machine. Issued on 10 November 2010, it has applied since 1 March 2011.
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Document preview — GB/T 25377-2010
National Standard of the People's Republic of China
- ICS
- 25.080.01
- Classification
- J 51
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Introduction
- 1 Scope
- 2 Normative references
- 3 type, precision grade
- 3.1 Type 1 test rods
- 3.2 accuracy class 1 test rods
- 4 structure, size
- 4.1 cone test rod structure, size
- 4.2 cylindrical test rod structure, size
- 5 Technical requirements
- 6 Test Method
- 7 signs, accompanying documents, packing
- Deflection Appendix A (informative) test rods
Foreword
Appendix A of this standard is an informative annex.
The standard proposed by China Machinery Industry Federation.
The standard metal cutting machine tools by the National Standardization Technical Committee (SAC/TC22) centralized.
1 Scope
This standard specifies the test rod type, accuracy class, structure, size, technical requirements and test methods and so on.
This standard applies to test geometric precision metal cutting machine tools Morse taper Metric cone, 7.24 taper, cylindrical test rods.
2 Normative references
The following documents contain provisions which, through reference in this standard, constitute provisions of the standard. For dated references, subsequently Some amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 230.1-2004 metal Rockwell hardness test - Part 1. Test methods (A, B, C, D, E, F, G, H, K, N, T standard Feet) (ISO 6508-1:1999, MOD)
GB/T 1219-2008 Indicators
GB/T 1443-1996 and machine tool shank with clips from the cone (eqv ISO 296:1991)
GB/T 1958-2004 Geometrical Product Specifications (GPS) shape and position tolerance testing requirements
GB/T 3837-2001 7.24 taper shank tool manually (eqv ISO 297. 1988)
GB/T 4340.2-1999 Vickers hardness test - Part 2. hardness test (idt ISO 6507-2:1997)
GB/T 4340.3-1999 Vickers hardness test - Part 3. Calibration of hardness blocks (idt ISO 6507-3:1997)
GB/T 4755-2004 torsion spring comparator
GB/T 6060.2-2006 surface roughness comparison specimens grinding, turning, boring, milling, shaped and planed surfaces (ISO 2632/1. 1985, MOD)
GB/T 6062-2002 Geometrical product specifications (GPS) Surface texture Profile method (stylus) stylus instrument nominal Laid Resistance (ISO 3274:1996, EQV)
GB/T 10944.1-2006 automatic tool changer with 7.24 taper tool shank 40, 45 and 50 of the handle - Part 1. Dimensions and Cone Angle tolerance (ISO 7388/1. 1983, IDT)
GB/T 11852-2003 cone gauge tolerances and technical conditions
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)
JB/T 7974-1999 cast iron plate
JB/T 10036-1999 inductive micrometer
3 Type, precision grade
3.1 Type test rods
Type test rods are shown in Table 1.
Test rods accuracy class 3.2 Precision test bar is divided into two levels. ordinary level (P-level), precision (M-class), are shown in Table 1.
NOTE: Use the test rod test machine geometric accuracy should reference GB/T 17421.1.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 230.1-2004Metallic materials - Rockwell hardness test - Part 1: Test method
- GB/T 1219-2008Dial gauges
- GB/T 1443-1996Self-holding tapers for machine tools and tool shanks
- GB/T 1958-2004Geometrical Product Specifications(GPS)—Geometrical tolerance—Verification
- GB/T 3837-20017/24 tapers for tool shanks for manual changing
- GB/T 4340.2-1999Metallic materials - Vickers hardness test - Part 2: Verification and calibration of testing machines
Similar standards
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Related Standards
GB/T 11852-2003 — Tolerances and specification of taper gauges
GB/T 1219-2008 — Dial gauges
GB/T 3837-2001 — 7/24 tapers for tool shanks for manual changing
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GB/T 25377-2010
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