GB/T 40310.2-2021 in English
VALIDBall splines—Part 2:Dynamic and static load ratings and rating life
- Issued on:2021-05-21
- Implemented on:2021-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | GB/T 40310.2-2021 |
| Document status: | VALID |
| Title in English: | Ball splines—Part 2:Dynamic and static load ratings and rating life |
| Title in Chinese: | 滚动花键副 第2部分：动态和静态额定载荷和额定寿命 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2021-05-21 |
| Implemented on: | 2021-12-01 |
| ICS Classification: | 25.060.10-Modular units and other devices |
| Chinese Classification: | J51-Machine tool element |
| Professional Classification: | GB-National Standard |
| Related Topics: | animal lifespan
Forehead lifespan animals scrolling and static dynamic static dynamic and static Dynamic and static methods static testing and dynamic dynamic law and static law static test dynamic dynamic and static methods static life static and dynamic GB/T 40310.2 GB/T 40310.2-2021 dynamic capacity static fluorescence lifetime static dynamic Settling bacteria static dynamic |
《GB/T 40310.2-2021滚动花键副 第2部分：动态和静态额定载荷和额定寿命》由TC22（全国金属切削机床标准化技术委员会）归口，TC22SC10（全国金属切削机床标准化技术委员会功能部件分会）执行，主管部门为中国机械工业联合会。
Introduction
Analysis of the core content of the standard
GB/T40310.2-2021, as a key part of the rolling spline pair technology system, focuses on standardizing the load calculation and life assessment methods of AⅠ type, AⅡ type and R type rolling spline pairs. The standard innovatively introduces four prerequisites: elastic deformation assumption, hardness requirements (>58HRC), material limitations (bearing steel/alloy steel) and lubrication requirements.
Load Calculation System Comparison
| Type | Dynamic Load Formula | Static Load Formula | Torque Calculation |
|---|---|---|---|
| AⅠ/AⅡ Type | C=bm×fc×lt1/3×it0.8×cosα×Zt×DW2.1 | C0=f0×it×Zt×DW2×cosα | Support Torque Calculation |
| R Type | C=bm×fc×ki×lt1/3×Zt2/3×DW2 | C0=f0×k0i×Zt×DW2 | Not applicable |
Key Technical Parameters Description
Adjustment coefficient specification: The standard clearly stipulates that bm=1.3 and λ=0.9 are the maximum values, allowing manufacturers to use smaller values according to actual conditions to leave a safety margin for the design.
Contact stress classification: The maximum contact stress is divided into 9 levels (2420-4600MPa) according to the rg/DW ratio, see standard Table 1 for details.
Life calculation model
The basic rated life L10 is calculated using the cubic relationship:
- Load life: L10=(C/P)3×50km
- Torque life: L10=(CT/T)3×50km
Implementation suggestions
- When selecting, the corresponding structure should be selected according to the load type (AⅠ/AⅡ type is suitable for combined load, R type is suitable for pure radial load)
- The matching relationship between fc coefficient and rg/DW must be verified under dynamic working conditions
- Regularly check the raceway hardness to ensure continuous> 58HRC
- The lubrication system design must meet the requirements of Chapter 1 of the standard
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 39983-2021 in English
Ball arc guide—Acceptance specifications
2021-04-30
