GB/T 26958.1-2025Geometrical product specifications (GPS) - Filtration - Part 1: Overview and basic concepts (English PDF)

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 1 of GB/T 26958 "Product Geometry Technical Specification (GPS) Filtering". GB/T 26958 has been published in Lower part.

--- Part 1: Overview and basic concepts;

--- Part 20: Linear profile filters. Basic concepts;

--- Part 21: Linear profile filters Gaussian filters;

--- Part 22: Linear profile filters and spline filters;

--- Part 28: Profile filter end effects;

--- Part 29: Linear profile filter wavelets;

--- Part 30: Robust contour filters. Basic concepts;

--- Part 31: Robust contour filters Gaussian regression filters;

--- Part 32: Robust contour filters and spline filters;

--- Part 40: Basic concepts of morphological contour filters;

--- Part 41: Morphological contour filters, disk and horizontal line segment filters;

--- Part 49: Morphological contour filter scale space technique;

--- Part 60: Basic concepts of linear area filters;

--- Part 61: Linear area filters Gaussian filters;

--- Part 71: Robust regional filter Gaussian regression filter;

--- Part 85: Morphological region filter segmentation.

This document replaces GB/Z 26958.1-2011 "Product Geometry Technical Specification (GPS) Filtering Part 1: Overview and Basic Concepts" Compared with GB/Z 26958.1-2011, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

--- The nature of the standard is changed from a guiding technical document to a recommended national standard;

--- Changed the introductory words of terms and definitions (see Chapter 3, Chapter 3 of the 2011 edition);

--- Changed the terminology and definition of "component element" (see 3.1, 3.1 of the 2011 edition);

--- Changed the term and definition of "nested index" (see 3.2.1, 3.2.1 of the 2011 edition);

--- Added the term and definition of "cut-off wavelength" (see 3.2.1.1);

--- Added the term and definition of "vertical disk radius" (see 3.2.1.2);

--- Added the term and definition of "horizontal line length" (see 3.2.1.3);

--- Added the term and definition of "radius of sphere" (see 3.2.1.4);

--- Added the term and definition of "disc radius" (see 3.2.1.5);

--- Added the term and definition of "Wolf trimming height" (see 3.2.1.6);

--- Added the term and definition of "basic scale" (see 3.4.3);

--- Changed the term and definition of "filtering" (see 3.5, 3.5 of the 2011 edition);

--- Changed the partial description of "Basic Mathematical Model" (see 4.2).

This document is modified to adopt ISO 16610-1:2015 "Geometrical Product Specification (GPS) Filtering Part 1: Overview and Basic Concepts" read".

The technical differences between this document and ISO 16610-1:2015 and their reasons are as follows.

--- ISO 17450-1 was replaced by the normative reference GB/T 24637.1 to adapt to my country's technical conditions (see Chapter 3), and Increase operability;

--- ISO 17450-2 was replaced by the normative reference GB/T 24637.2 to adapt to my country's technical conditions (see Chapter 3), and Increase operability;

--- The definition of "component element" (see 3.1) has been changed to conform to the usage practices in this field.

The following editorial changes were made to this document.

---3.2.1.5 adds a note;

--- Deleted the footnote of ISO 16610-62 in Table 2;

--- Add "Overview" (see A.1.3.1) to solve the problem of suspension section;

--- Add "Overview" (see A.2.1) to solve the problem of suspension section;

--- Deleted the explanation of filter comparison in B.2.1;

---Replaced ISO 16610 (alparts) with informative reference GB/T (Z) 26958 (all parts) to adapt to my country's technology Conditions (see Chapter 3, 4.1, Appendix A, Appendix B, Appendix C, Appendix E) to increase operability;

--- ISO 14638 is replaced by the informative GB/T 20308 to adapt to my country's technical conditions (see Appendix F), and the Operability;

--- ISO 8015 is replaced by the informative GB/T 4249 to adapt to my country's technical conditions (see Appendix F), and operability is increased Sexuality;

--- ISO 14253-1 was replaced by the informative reference GB/T 18779.1 to apply my country's technical conditions (see Appendix F), and added Operability.

Introduction

In the process of analyzing the surface roughness characteristic information of the product, the filter model, filter parameters, filter transmission characteristics, There is no consistent standard specification for the separation, extraction and reconstruction of the long-wave and short-wave components of the surface profile, and the treatment of the end effect.

The concept of GPS consistency specification is in line with the requirements. The focus is on the processing technology and filtering of surface roughness characteristic information with Gaussian statistical distribution.

Method, a surface morphology roughness filtering specification system for the new generation of GPS is constructed.

GB/T 26958 "Product Geometry Technical Specification (GPS) Filter" is based on the new generation of GPS product geometry specification system, providing industrial production A complete set of filter calculation tools is provided, which can be used together with other calculation tools to ensure the smooth and reasonable progress of product specification and certification.

It is widely used in surface topography measurement and analysis and has become an important analytical tool for existing surface topography measurement instruments.

This standard provides unified support for the measurement and analysis of surface morphology information in the manufacturing field and for the development and application standardization of related instruments.

The formulation of standards will help improve the diversified surface morphology analysis tools and enhance the quality, performance and international competitiveness of corporate products.

GB/T 26958 is intended to consist of 16 parts.

--- Part 1: Overview and basic concepts. Aims to define the basic terms of GPS filtering and the basic process used by GPS filtering frame.

--- Part 20: Linear profile filters. Basic concepts. Aims to specify the basic concepts of linear profile filters.

--- Part 21: Linear profile filters Gaussian filters. Aims to specify the metrological characteristics of Gaussian filters for profile filtering.

A method for separating the long-wave and short-wave components of surface profiles is given.

--- Part 22: Linear profile filter spline filter. Aims to specify spline filters for profile filtering, with particular reference to How to separate the long-wave and short-wave components of a contour.

--- Part 28: Profile filter end effects. Aims to give a method for dealing with the end effects of linear profile filters.

--- Part 29: Linear contour filter wavelets. Aims to specify spline wavelets and related concepts for contour filtering and give Basic terminology and applications of compactly supported spline wavelets.

--- Part 30: Robust contour filter. Basic concepts. Aims to specify the basic concepts of robust contour filter.

--- Part 31: Robust profile filter Gaussian regression filter. Aims to specify the discrete robust Gaussian regression filter characteristic.

--- Part 32: Robust contour filter spline filter. Aims to specify the characteristics of robust spline filters applicable to surface contours.

properties, and a detailed method for separating the long-wave and short-wave components of the surface profile.

--- Part 40: Basic concepts of morphological contour filters. Aims to specify morphological operations and filters, including envelope filters Basic terms and concepts.

--- Part 41: Morphological contour filters, disk and horizontal line segment filters. Aims to specify the use of disk and horizontal line segment to construct elements Techniques for computing morphological filters including envelope filters.

--- Part 49: Morphological contour filter scale space technique. Aims to specify the morphological scale space technique and give the scale space Basic terminology of inter-technology and its usage.

--- Part 60: Basic concepts of linear area filters. Aims to specify the basic concepts of linear area filters.

--- Part 61: Linear region filter Gaussian filter. Aims to specify the linear region Gaussian filter, in particular how to Separates the long-wave and short-wave components of the surface.

--- Part 71: Robust regional filter Gaussian regression filter. Aims to specify the characteristics of the robust regional Gaussian regression filter in particular, methods for separating the large-scale and small-scale lateral components of a surface are used.

--- Part 85: Morphological region filter segmentation. Aims to establish terms and concepts related to region morphological segmentation. Assume that Continuous surfaces, in particular the watershed segmentation algorithm and the Wolfe pruning algorithm are described.

Geometric Product Specification (GPS) Filtering Part 1: Overview and basic concepts

1 Scope

This document defines the basic terminology of GPS filtering and the basic process framework used by GPS filtering.

2 Normative references

The contents of the following documents constitute the 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.

GB/T 24637.1 Geometrical Product Specification (GPS) General Concepts Part 1: Models for Geometric Specification and Inspection (GB/T 24637.1-2020,ISO 17450-1:2011,MOD) GB/T 24637.2 Product geometry specification (GPS) General concepts Part 2: Basic principles, specifications, operation sets and uncertainties Degree (GB/T 24637.2-2020, ISO 17450-2:2012, MOD)

3 Terms and definitions

The terms and definitions defined in GB/T 24637.1, GB/T 24637.2 and ISO/IEC Guide 99 and the following apply to this document.

Integral elements

Geometric features belonging to the actual surface or surface model of a workpiece.

Note 1 to entry. A component is defined in essence, such as the surface of a workpiece.

Note 2.For the purpose of standard presentation, geometrical features separated from a surface model or from the actual surface of a workpiece are defined as component features.

Models of different physical parts with specific functions, especially the contact parts between workpieces.

Note 3 to entry. Components can be identified, for example, by.

--- Separation of surface models;

--- Separation of another component;

---Combination of other components.

[Source. GB/T 24637.1-2020, 3.3.5, modified] 3.1.1 surfaceportion SP A part of an element (3.1) separated from it.