GB/Z 18620.3-2008Cylindrical gears - Code of inspection practice - Part 3: Recommendations relative to gear blanks, shaft centre distance and parallelism of axes (English PDF)

Foreword

GB /Z18620 "Cylindrical Gear Inspection Code of Practice" includes the following four parts.

--- Part 1. Inspection of the gear teeth on the same side;

--- Part 2. radial integrated deviation, radial runout, tooth thickness and backlash test;

--- Part 3. Gear billet, axis center distance and axis parallelism test;

--- Part 4. surface structure and gear tooth contact test. This part is the third part of GB /Z18620.

This section identical with ISO /T R10064-3..1996 "Cylindrical Gear Inspection Practices Part 3. Gear billet, shaft center distance And axis parallelism recommended document "(in English).

This section is equivalent translation ISO /T R10064-3..1996. For ease of use, this section made the following editorial changes.

--- According to the Chinese habit of some layout format has been modified;

--- With the decimal point "." Instead of as a decimal point ",";

--- ISO /T R10064-3..1996 cited in other international standards, there is the equivalent to be used as our standard, with our standard Instead of the corresponding international standards, has not been adopted as the equivalent of China's direct reference to international standards.

This section is the GB /Z18620.3-2002 "Cylindrical Gear Inspection Practices Part 3. Gear blank, shaft center distance and axis Parallelism "revision. Compared with GB /Z18620.3-2002, the main content is revised as follows.

--- Some of the terms of the text has been modified.

1 Scope

This section provides the recommended values for gear blank, center-to-center dimensional deviation and axial parallelism.

The numerical values listed in this section should not be considered as strict quality guidelines, but rather on the steel or iron gear in the mutual agreement, As a guide.

2 Normative references

The provisions of the following documents through the GB /Z18620 of this part of the reference and become the provisions of this section. Any reference to the date of the citation All subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to be reached under this section The parties to the agreement examine whether the latest versions of these documents are available. For undated references, the latest version applies to this book section.

GB/T 1356-2001 Standard machine and heavy machinery cylindrical gear standard basic rack profile (idt ISO 53.:1998)

GB/T 1357-1987 involute cylindrical gear modulus (neq ISO 54. 1977)

GB/T 1800.1-1997 Limits and cooperation foundation - Part 1. Vocabulary (neq ISO 286-1. 1988)

GB/T 10095.1-2008 Cylindrical gears - Precision systems - Part 1. Definition and permissible values of gear tooth misalignment (ISO 1328-1.:1995, IDT)

GB/T 10095.2-2008 Cylindrical gears - Precision systems - Part 2. Definitions and allowable values of radial general deviation and radial runout (ISO 1328-2.:1997, IDT)

3 Symbols and definitions