GB/T 3480.1-2019Calculation of load capacity of spur and helical gears -- Part 1: Basic principles, introduction and general influence factors (English PDF)
直齿轮和斜齿轮承载能力计算 第1部分：基本原理、概述及通用影响系数
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
December 31, 2019
Implementation date
July 1, 2020
Scope
GB/T 3480.1-2019 is the English-translated version of 直齿轮和斜齿轮承载能力计算 第1部分：基本原理、概述及通用影响系数.
GB/T 3480.1-2019 is the Chinese standard "Calculation of load capacity of spur and helical gears -- Part 1: Basic principles, introduction and general influence factors".
Its scope clause reads: This part of GB/T 3480 introduces the basic principle, overview and general influence factor of spur gear and helical gear calculation. it Together with ISO 6336-2, ISO 6336-3, ISO 6336-5 and ISO 6336-6 provides a way to compare different gear designs Comparative method.
It is not used to guarantee the performance of the assembled gear device, nor is it intended for general engineering personnel, but for experienced gear devices.
It can be used by designers, who can reasonably value the coefficients in the formula according to the knowledge of similar design, and understand what each value has to the calculation result. influences.
The formula in GB/T 3480 is to calculate the tooth surface contact strength and tooth root bending strength of involute cylindrical spur gears or helical gears.
It is proposed to provide a widely accepted method. GB/T 3480 contains the results based on experimental and theoretical researches such as Hirt [1], Strasser [2], and Brossmann [3].
Use this The results of the normal calculation method are quite consistent with the results of the previously accepted calculation methods (for normal working pressure angles not exceeding 25 ° and indexing snails) For cases where the rotation angle does not exceed 25 °, see references [4] ~ [8]).
For larger pressure angles and helix angles, the trend of the product of YFYSYbeta and the product of ZHZepsilonZbeta is different from some previously applied methods of.
Users should note that when GB/T 3480 is applied to this situation, its calculation results need to be confirmed based on experience.
The formula in GB/T 3480 does not apply to any of the following situations. --- The coincidence of the end faces of the spur gear or helical gear pair is less than 1.0; --- The coincidence of the end faces of the spur gear or helical gear pair is greater than 2.5; --- interference of tooth tip and tooth root; --- pointed teeth; --- The backlash is 0.
The formula in GB/T 3480 is not applicable to other forms of gear tooth damage, such as plastic yield, surface lamination, gluing and abrasion. Used for unpredictable tooth damage caused by vibration.
The bending strength calculation formula is only applicable when the tooth is broken at the fillet of the tooth root. However, it does not apply to broken teeth on the working surface, failure of the wheel flange or failure of the wheel body caused by spokes and hubs.
GB/T 3480 is not applicable to Gear teeth that are forged or sintered as the final processing step are not suitable for gear pairs with poor contact areas. GB/T 3480 provides a calculation method for the bearing capacity of tooth surface pitting and tooth root fracture.
When the pitch circle linear velocity is less than 1m/s, the tooth Wheel load capacity is usually limited by abrasive wear (for calculations in this regard, see other literature).
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Document preview — GB/T 3480.1-2019
National Standard of the People's Republic of China
- ICS
- 21.200
- Classification
- J 17
- Replacing
- GB/T 3480-1997
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms, definitions, codes and acronyms
- 4 Basic principles
- 4.1 Application
- 4.2 Tangential Load, Torque and Power
- 5 Use factor KA
- 5.1 Using the A method to determine the use factor KA-A
- 5.2 Determination of the use factor KA-B by the B method
- 6 Dynamic load factor Kv
- 6.1 Factors and calculations that affect internal dynamic loads
- 6.2 Principles and Assumptions
- 6.3 Determination of dynamic load coefficient
- 6.4 Determination of the dynamic load coefficient Kv-B by the B method
- 6.5 Determining the dynamic load factor Kv-C by C method
- 7 Helix load distribution coefficients KHbeta and KFbeta
- 7.1 Gear tooth load distribution
- 7.2 General principles for determining the helix load distribution coefficients KHbeta and KFbeta
- 7.3 Determination of the Spiral Load Distribution Coefficient --- Principles and Assumptions
- 7.4 Determining the Spiral Load Distribution Coefficient KHbeta-B by Method B
- 7.5 Determining the Spiral Load Distribution Coefficient KHbeta-C by Method C
- 7.6 Helix load distribution coefficient KFbeta calculated by determining the bending strength by method B or C
- 8 Tooth load distribution coefficients KHalpha and KFalpha
- 8.1 Tooth Load Distribution
- 8.2 Determination Method of Tooth Load Distribution Coefficient --- Principles and Assumptions
- 8.3 Using the B method to determine the load distribution coefficients KHalpha-B and KFalpha-B between teeth
- 9 Gear tooth stiffness c 'and cgamma
- 9.1 Stiffness Effects
- 9.2 Determination of Gear Tooth Stiffness-Principles and Assumptions
- 9.3 Determination of tooth stiffness c 'and cgamma by the B method
- Appendix A (normative) Supplementary methods for determining fsh and fma
- Appendix B (informative) (involute) Guide value for drum shape modification and tooth end thinning of cylindrical gears
- Appendix C (informative) Guidelines for KHbeta-C of cylindrical gear drum teeth
- Appendix D (informative) Calculations and explanations
- Appendix E (informative) Analysis and determination of load distribution
- References
1 Scope
This part of GB/T 3480 introduces the basic principle, overview and general influence factor of spur gear and helical gear calculation. it
Together with ISO 6336-2, ISO 6336-3, ISO 6336-5 and ISO 6336-6 provides a way to compare different gear designs
Comparative method. It is not used to guarantee the performance of the assembled gear device, nor is it intended for general engineering personnel, but for experienced gear devices.
It can be used by designers, who can reasonably value the coefficients in the formula according to the knowledge of similar design, and understand what each value has to the calculation result.
influences.
The formula in GB/T 3480 is to calculate the tooth surface contact strength and tooth root bending strength of involute cylindrical spur gears or helical gears.
It is proposed to provide a widely accepted method.
GB/T 3480 contains the results based on experimental and theoretical researches such as Hirt [1], Strasser [2], and Brossmann [3]. Use this
The results of the normal calculation method are quite consistent with the results of the previously accepted calculation methods (for normal working pressure angles not exceeding 25 ° and indexing snails)
For cases where the rotation angle does not exceed 25 °, see references [4] ~ [8]).
For larger pressure angles and helix angles, the trend of the product of YFYSYbeta and the product of ZHZepsilonZbeta is different from some previously applied methods of. Users should note that when GB/T 3480 is applied to this situation, its calculation results need to be confirmed based on experience.
The formula in GB/T 3480 does not apply to any of the following situations.
--- The coincidence of the end faces of the spur gear or helical gear pair is less than 1.0;
--- The coincidence of the end faces of the spur gear or helical gear pair is greater than 2.5;
--- interference of tooth tip and tooth root;
--- pointed teeth;
--- The backlash is 0.
The formula in GB/T 3480 is not applicable to other forms of gear tooth damage, such as plastic yield, surface lamination, gluing and abrasion.
Used for unpredictable tooth damage caused by vibration. The bending strength calculation formula is only applicable when the tooth is broken at the fillet of the tooth root.
However, it does not apply to broken teeth on the working surface, failure of the wheel flange or failure of the wheel body caused by spokes and hubs. GB/T 3480 is not applicable to
Gear teeth that are forged or sintered as the final processing step are not suitable for gear pairs with poor contact areas.
GB/T 3480 provides a calculation method for the bearing capacity of tooth surface pitting and tooth root fracture. When the pitch circle linear velocity is less than 1m/s, the tooth
Wheel load capacity is usually limited by abrasive wear (for calculations in this regard, see other literature).
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 1356-2001 Standard basic rack profile for cylindrical gears for general machinery and heavy machinery (idt ISO 53..1998)
GB/T 3374.1-2010 Gear terms and definitions Part 1. Geometric definition (ISO 1122-1..1998, IDT)
GB/T 3505-2009 Product Geometric Technical Specification (GPS) Terms, definitions and surface structure parameters of surface structure contour method (ISO 4287..1997, IDT)
GB/T 10095.1-2008 Cylindrical gear precision system Part 1. Definition and allowable value of deviation of tooth surface on the same side of gear teeth (ISO 1328-1..1995, IDT)
GB/T 10087 | GB/T 10086 | GB/T 6404.2 | GB/Z 3480.4 | GB/T 3480.5 | GB/T 3480.3 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 158 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 1356-2001Cylindrical gears for general and heavy engineering -- Standard basic rack tooth profile
- GB/T 3374.1-2010Vocabulary of gear terms -- Part 1: Definitions related to geometry
- GB/T 3505-2009Geometrical product specifications (GPS) -- Surface texture: Profile method -- Terms, definitions and surface texture parameters
- GB/T 10095.1-2008Cylindrical gears - ISO system of flank tolerance classification - Part 1: Definitions and allowable values of deviations relevant to flanks of gear teeth
ISO 53 · ISO 1122 · ISO 4287 · ISO 1328
Cited by
- GB/T 46154-2025Safety rules for the construction and installation of lifting appliances in wind turbines
- GB/Z 3480.20-2025Calculation of load capacity of spur and helical gears - Part 20: Calculation of scuffing load capacity - Flash temperature method
- GB/Z 13672-2022Test method for scuffing load capacity of gears
- GB/T 14229-2021Test method of surface contact strength for gear load capacity
- GB/T 14230-2021Test method of tooth bending strength for gear load capacity
- GB/T 39332-2020General requirements for the anti-fatigue manufacturing of precision gears
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Related Standards
GB/T 1356-2001 — Cylindrical gears for general and heavy engineering -- Standard basic rack tooth profile
GB/T 3374.1-2010 — Vocabulary of gear terms -- Part 1: Definitions related to geometry
GB/T 3505-2009 — Geometrical product specifications (GPS) -- Surface texture: Profile method -- Terms, definitions and surface texture parameters
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