GB/T 6314-2018Internal micrometer with three-point contact (English PDF)

Foreword

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

This standard replaces GB/T 6314-2004 "Three-claw inner diameter micrometer". This standard is compared with GB/T 6314-2004, except for editorial repair In addition, the main technical changes are as follows.

--- Revised the scope of application of the standard (see Chapter 1, Chapter 1 of the 2004 edition);

--- Redefining related terms (see Chapter 3, Chapter 3 of the 2004 edition);

--- Re-specified the measurement range of the three-claw inner micrometer and its corresponding relationship with the range (see 4.3, 2004 edition 4.2);

--- Increased the requirement for measuring paw interaction (see 5.2);

--- Increased the requirements for the interchangeability of the three-claw inner micrometer probe (see 5.2.3);

--- Revised the requirements for materials required for measuring jaws and measuring heads (see 5.3, 5.2 of 2004 edition);

--- Increased the requirement for scale marking and its coincidence (see 5.4);

--- Added requirements for zero adjustment device, screw pair wear adjustment device and extension rod (see 5.5);

--- Revised the requirements for the force measuring device and its force measurement value (see 5.6, 5.3 of the 2004 edition);

--- Revised the requirements for the shape of the measuring surface and the hardness and surface roughness of the measuring surface (see 5.7.1, 5.7.4, 5.4.1 of the 2004 edition);

--- Increased the requirements for the shape of the special-purpose measuring surface and the requirements of the two-point measuring surface (see 5.7.2, 5.7.3);

--- Re-principle the principle of maximum allowable error and error determination of the indication (see 5.8, 5.7 of 2004 edition);

--- Redefined the technical requirements for the proofreading ring gauge (see 5.9, 5.7 of the 2004 edition);

--- Increased the requirements for inspection conditions (see Chapter 6);

--- Added the content of the inspection method, supplemented the appearance, interaction, scale marking and its coincidence, inspection and measurement of various devices Inspection methods for items such as face (see Chapter 7);

--- Revised the test method for proofreading ring gauges, and unified with relevant standards (see 7.8, 2004 edition 6.2).

1 Scope

This standard specifies the terms and definitions, types and basic parameters of the three-claw inner micrometer (excluding the electronic digital three-claw inner micrometer). Requirements, inspection conditions, inspection methods, signs and packaging.

This standard applies to scale readings and digital readings with a scale value of 0.001mm, 0.005mm, and an upper limit of the measurement range up to 300mm. Claw inner micrometer (excluding electronic digital three-claw inner 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 1216-2018 outer diameter micrometer

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

JB/T 11233-2012 Calibration ring gauge

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