GB/T 6313-2018Pointed-contact micrometer with conical tips (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 6313-2004 "pointed micrometer". This standard is compared with GB/T 6313-2004, except for editorial modifications. In addition, the main technical changes are as follows.

--- Removed the maximum allowable error value of the micrometer and its definition (see 3.3, 5.10 of 2004 edition);

--- Modified the basic parameters of the measurement range (see 4.2.1, 4.2.2, 4.2 of the 2004 version);

--- Increased the taper angle of the measuring end by 15° (see Table 2 in 5.4, Table 2 in Table 5.4 of 2004);

--- Revised the spherical or planar diameter of the measuring end from 0.2mm to 0.3mm to 0.5mm~0.8mm (see Table 2 in 5.4). Table 2 of the 2004 edition of 5.4);

--- Increase the diameter of the micrometer screw and the cylindrical part of the anvil to 6.35mm (see Table 2 in 5.4, Table 2 in Table 5.4 of 2004);

--- Increased the test method for the change of the distance between the two measuring surfaces before and after locking (see 6.5).

1 Scope

This standard specifies the terms and definitions, types and basic parameters, requirements, of the pointed micrometer (excluding the electronic digital tip micrometer). Inspection methods, signs and packaging.

This standard applies to the division value of 0.01mm, 0.001mm, 0.002mm, 0.005mm, the micrometer range is 25mm, the measurement range A pointed micrometer with an upper limit of 100 mm (excluding an electronic digital tip micrometer).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 17163-2008 Geometrical quantity measuring instrument terminology basic terminology

GB/T 17164-2008 Geometric quantity measuring instrument terminology product terminology

GB/T 18779.1-2002 Specification for geometrical quantities of products (GPS) Measurements and measurements of workpieces and measuring equipment - Part 1: Determination rules for passing or failing to pass the inspection

GB/T 24634-2009 Geometrical Product Specifications (GPS) General concepts and requirements for GPS measuring equipment

3 Terms and definitions

GB/T 17163-2008, GB/T 17164-2008 and GB/T 24634-2009 define the following terms and definitions apply In this document.

4 Type and basic parameters