GB/T 8061-2022Micrometer with dial comparator (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 of Standardization Documents" drafted.

This document replaces GB/T 8061-2004 "Lever Micrometer". Compared with GB/T 8061-2004, except for structural adjustments and editorial changes Besides, the main technical changes are as follows.

--- Changed the scope and expanded the varieties of digital display (see Chapter 1, Chapter 1 of the 2004 edition);

--- Changed the relevant terms (see Chapter 3, Chapter 3 of the 2004 edition);

--- Changed the type of lever micrometer (see 4.1, 4.1 of the 2004 edition);

--- Changed the requirements for basic parameters and added detailed provisions (see 4.2, 4.2 of the 2004 edition);

--- Changed the appearance requirements and added detailed regulations (see 5.1, 5.1 of the 2004 edition);

--- Added requirements for interaction (see 5.2);

--- Changed the material requirements (see 5.3, 5.2 of the 2004 edition);

--- Changed the quantitative requirements for the rigidity of the ruler frame (see 5.4, 5.3 of the 2004 edition);

--- Changed the requirements for measuring force (see 5.5, 5.5 of the 2004 edition);

--- Added requirements for various devices, and specified various devices that should and should be provided for lever micrometers (see 5.6);

--- Changed the requirements for the measurement surface, and put forward quantitative requirements for the roughness and offset of the measurement surface (see 5.7.4, 5.7.4 of the 2004 edition);

--- Changed the requirements for the parallelism of the measuring surface and inspection tools (see 5.7.5, 5.7.3 of the 2004 edition);

--- Changed the requirements of the ruler (see 5.8, 5.8 of the 2004 edition);

--- Changed the requirements of the instruction table (see 5.9, 5.10 of the 2004 edition);

--- Changed the index of allowable error and expanded the range of high precision (see 5.10, 5.11 of the 2004 edition);

--- Added inspection conditions (see Chapter 6);

--- Changed the inspection method (see 7.9, 6.5 of the 2004 edition).

1 Scope

This document specifies the type and basic parameters, requirements, inspection conditions, inspection methods, marking and packaging of lever micrometers.

This document is applicable to the graduation value of the differential head is 0.01mm, the range is 25mm, the graduation value of the indicator table is 0.001mm, 0.002mm, Or a lever micrometer with a resolution of 0.0005mm and 0.001mm and a measurement upper limit of 100mm.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 1216 outside micrometer

GB/T 1219 Instruction Sheet

GB/T 1800.2 Product Geometric Specification (GPS) Linear Dimension Tolerance ISO Code System Part 2: Standard Tolerance Zone Code and limit deviation table of hole and shaft

GB/T 17163 Basic terminology of geometric measuring instruments

GB/T 17164 Terminology of Geometric Measuring Instruments Product Terminology

GB/T 18761 Electronic digital display indicator

GB/T 18779.1 Technical Specifications for Geometric Quantities of Products (GPS) Measurement and Inspection of Workpieces and Measuring Equipment Part 1: Inspection According to Specifications Pass or Fail Judgment Rules

GB/T 24634 Product Geometric Specifications (GPS) General Concepts and Requirements for GPS Measuring Equipment

JB/T 10631 pin gauge

3 Terms and Definitions

GB/T 17163, GB/T 17164, GB/T 24634 and the following terms and definitions apply to this document.