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GB/T 24633.2-2024: Geometrical product specifications(GPS) - Cylindricity - Part 2: Specification operators
Status: Valid GB/T 24633.2: Evolution and historical versions
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Geometrical product specifications(GPS) - Cylindricity - Part 2: Specification operators
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GB/T 24633.2-2024
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| GB/T 24633.2-2009 | English | 519 |
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Geometrical product specifications (GPS) -- Cylindricity -- Part 2: Specification operators
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GB/T 24633.2-2009
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Basic data | Standard ID | GB/T 24633.2-2024 (GB/T24633.2-2024) | | Description (Translated English) | Geometrical product specifications(GPS) - Cylindricity - Part 2: Specification operators | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J04 | | Classification of International Standard | 17.040.20 | | Word Count Estimation | 14,140 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2024-09-29 | | Older Standard (superseded by this standard) | GB/T 24633.2-2009 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 24633.2-2024: Geometrical product specifications(GPS) - Cylindricity - Part 2: Specification operators
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ICS 17.040.20
CCSJ04
National Standard of the People's Republic of China
Replaces GB/T 24633.2-2009
Geometric Product Specification (GPS) Cylindricity
Part 2.Specification of Operation Sets
(ISO 12180-2.2011,IDT)
Released on 2024-09-29
2024-09-29 implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 Complete Specification Operation Set 2
4.1 Overview 2
4.2 Detection system 2
5 Conformity with specifications 2
Appendix A (Informative) Harmonic components and extraction schemes for nominal cylindrical workpieces 3
A.1 Harmonic components 3
A.2 Aliasing and the Nyquist Criterion 3
A.3 Harmonic components of cylindrical elements 4
Appendix B (Informative) Extraction Scheme 6
B.1 Overview 6
B.2 Birdcage Extraction Protocol 6
B.3 Circumference extraction scheme 6
B.4 Primer Extraction Scheme 6
B.5 Multi-point extraction scheme 6
Appendix C (Informative) Relationship with GPS Matrix Model 8
C.1 Overview 8
C.2 Information about the standard and its use 8
C.3 The position of this document in the GPS matrix model 8
C.4 Related standards 8
References 9
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document is Part 2 of GB/T 24633 "Geometrical Specifications for Products (GPS) Cylindricity". GB/T 24633 has been published.
The following parts.
--- Part 1.Vocabulary and parameters;
--- Part 2.Specification of operation sets.
This document replaces GB/T 24633.2-2009 "Geometrical Product Specification (GPS) Cylindricity Part 2.Specification Operation"
Compared with GB/T 24633.2-2009, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Change “stylus tip” to “probe tip” (see Chapter 4, Chapter 4 of the.2009 edition);
b) The expression of “detection mode” has been changed (see 4.2.1, 4.2.1 of the.2009 edition);
c) The expression of “measurement force” has been changed (see 4.2.3, 4.2.3 of the.2009 edition).
This document is equivalent to ISO 12180-2.2011 "Geometrical Product Specifications (GPS) Cylindricity Part 2.Set of specification operations".
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed and coordinated by the National Technical Committee for Standardization of Product Geometry Technical Specifications (SAC/TC240).
This document was drafted by. Harbin Institute of Technology, Shenzhen Institute of Metrology and Quality Inspection, China Aviation Industry Corporation Beijing Great Wall
Institute of Metrology and Testing Technology, China Institute of Metrology, China University of Metrology, China Machinery Productivity Promotion Center Co., Ltd., Zhejiang University
Dong Industrial Technology Research Institute, Huazhong University of Science and Technology, AMETEK Trading (Shanghai) Co., Ltd., Zhejiang Qiaoshi Intelligent Industry Co., Ltd.,
Ningbo Sunny Optical Industries Co., Ltd. and China Machinery Research Institute of Standards and Technology (Beijing) Co., Ltd.
The main drafters of this document are. Tan Jiubin, Li Ameng, Huang Jingzhi, Sun Yujiu, Xue Zi, Liu Yongmeng, Zhao Jun, Zhu Yue, Zhang Zongzheng, Lu Wenlong,
Zhang Tong, Zhou Sen, and He Zonggui.
This document was first published in.2009 and this is the first revision.
Introduction
Cylindricity is one of the important shape tolerances in product geometry specifications and is also the key to evaluating the geometric shape accuracy of rotating body products.
Cylindricity is one of the most basic geometric errors. It is very important to ensure the geometric accuracy of rotating parts and improve the quality of products.
Manufacturing accuracy, working performance and reliability play an important fundamental role in optimizing the manufacturing process. Scientific and advanced cylindrical specifications can not only reduce
The error in the manufacturing process can improve the working performance of the rotating body products, and can also significantly reduce the failure rate of the rotating body products and extend their service life.
With the development of digital measurement technology and product geometry specifications, the relevant definitions in the original standard are different from those in the current standard.
The national GPS standards are not commensurate, and the technical requirements lag behind the current production needs, and cannot effectively regulate and guide the current market production situation.
The finalized standards can better regulate and guide product geometric elements, provide technical support for enterprises in the design, manufacturing, inspection and other processes, and promote
The development of my country's high-end equipment manufacturing industry.
GB/T 24633 aims to specify the cylindricity specification of a single component and consists of two parts.
--- Part 1.Vocabulary and parameters. The purpose is to define the terms and concepts of cylindricity of single components.
--- Part 2.Set of specification operations. The purpose is to specify a complete set of specification operations for the cylindricity of a single component.
This document does not specify a default filter cut-off frequency, stylus tip radius (the stylus tip itself has a
A certain shape and size, which plays a mechanical filtering role in the measurement, so the probe tip is sometimes also called the probe contact) and related methods (see
The cylindricality specification must specify the operating value to ensure its uniqueness.
, the specification is ambiguous and the supplier may use any value in this operation to provide proof of conformity.
Filtering is necessary for data extraction operations. When extracting data, additional filtering may or may not be used.
It can be a mean line filter (Gaussian filter, spline filter, wavelet filter, etc.) or a nonlinear filter (such as morphological filter). The filter type will affect
The definition of cylindricity as well as the set of normative operations therefore need to be clearly stated.
NOTE 1 Stylus filtering alone is not sufficient to smooth the profile. In some cases, it may give erroneous values due to the generation of spurious high frequency components. To correct this
The most advanced filter is the Gaussian filter, but it also has some defects, such as distortion.
Instead of eliminating certain roughness features, certain waviness features may also be distorted instead of being correctly transmitted. In order to better solve these problems,
New filters are being developed within ISO.
Note 2.For a given cut-off length, if the probe tip radius is smaller than the specified value, the measured value will usually be larger, but this can generally be ignored;
If the diameter is larger than the specified value, the measured value will usually be smaller. The amount of change in the measured value depends greatly on the surface being measured.
Note 3.In order to eliminate the influence of elastic deformation of the workpiece in the standard operation set, the standard measuring force is selected as 0N, and for metal surfaces with sufficient thickness, the measuring force is
The impact of physical strength can generally be ignored.
Note 4.In the direction of roundness and straightness, the high-order harmonic components of the skin surface model cause aliasing and other problems in the extraction process (see Appendix A), which may lead to
Caused by specification uncertainty.
This document specifies a set of standard operations for the cylindricity of a single component in accordance with ISO 17450-2.It does not involve specific cylindricity measurements.
method.
Geometric Product Specification (GPS) Cylindricity
Part 2.Specification of Operation Sets
1 Scope
This document specifies a complete set of specification operations for the cylindricity of a single component.
This document applies to the complete cylindrical profile of a single component.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
ISO 12180-1 Geometrical product specifications (GPS) Cylindricity Part 1.Vocabulary and parameters
Note. GB/T 24633.1-2024 Geometrical Product Specification (GPS) Cylindricity Part 1.Vocabulary and parameters (ISO 12180-1.2011, MOD)
ISO 12181-1 Geometrical product specifications (GPS) Roundness Part 1.Vocabulary and parameters
Note. GB/T 24632.1-2024 Product Geometric Specification (GPS) Roundness Part 1.Vocabulary and parameters (ISO 12181-1.2011, MOD)
ISO 12780-1 Geometrical product specifications (GPS) Straightness Part 1.Vocabulary and parameters
Note. GB/T 24631.1-2024 Product Geometric Specification (GPS) Straightness Part 1.Vocabulary and parameters (ISO 12780-1.2011,
MOD)
ISO 14253-1 Geometrical product specifications (GPS) - Measurement and inspection of workpieces and measuring equipment - Part 1.Verification of conformity to specifications
workpieces and measuring equipment-Part 1.Decision rules for verifying conformity or
Note. GB/T 18779.1-2022 Product geometry specification (GPS) Measurement and inspection of workpieces and measuring equipment Part 1.Verification of compliance to specifications
Or unqualified judgment rules (ISO 14253-1.2017, IDT)
ISO 16610-211) Geometric Product Specification (GPS) Filtering Part 21.Linear Profile Filter Gaussian Filter
1) The referenced document of ISO 12180-2.2011 is ISO 11562.1996, which has been abolished and replaced by ISO 16610-21.2011.
Note. GB/T 26958.21-2020 Product Geometry Technical Specification (GPS) Filtering Part 21.Linear Profile Filter Gaussian Filter
(ISO 16610-21.2011, IDT)
ISO 17450-2 Geometrical product specifications (GPS) General concepts Part 2.Basic principles, specifications, operational sets and uncertainties
Note. GB/T 24637.2-2020 Product geometry specification (GPS) General concepts Part 2.Basic principles, specifications, operation sets and uncertainties
(ISO 17450-2.2012,MOD)
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