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GB/T 1972.1-2023: Disc springs - Part 1: Calculation
Status: Valid GB/T 1972.1: Evolution and historical versions
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Disc springs - Part 1: Calculation
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Disc spring
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Basic data | Standard ID | GB/T 1972.1-2023 (GB/T1972.1-2023) | | Description (Translated English) | Disc springs - Part 1: Calculation | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J26 | | Classification of International Standard | 21.160 | | Word Count Estimation | 29,294 | | Date of Issue | 2023-05-23 | | Date of Implementation | 2023-12-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 1972.1-2023: Disc springs - Part 1: Calculation---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 21:160
CCSJ26
National Standards of People's Republic of China
Disc Springs Part 1: Calculations
Discspring-Part 1:Calculation
(ISO 19690-1:2017, MOD)
Released on 2023-05-23
2023-12-01 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Symbols, parameter names and units 1
5 Structural type, grouping and dimension series 3
5:1 Structure type 3
5:2 Disc spring grouping 4
5:3 Dimension series 4
6 Single Disc Spring Calculation 4
6:1 Overview 4
6:2 Detection load 4
6:3 Coefficients in calculations4
6:4 Calculation of Disc Spring Load, Calculation Stress, Disc Spring Stiffness and Disc Spring Deformation Energy 5
7 Spring characteristics 6
7:1 Spring characteristics of a single disc spring 6
7:2 Spring characteristics of combined disc springs 8
8 Load classification, allowable stress 11
8:1 Load classification 11
8:2 Allowable stress under static load 11
8:3 Range of allowable stress under dynamic load 11
Appendix A (Informative) Calculation Example 13
Appendix B (Informative) Other Combined Disc Springs 19
Appendix C (informative) The influence of friction force on spring characteristics 20
Appendix D (informative) Common materials for disc springs 22
Reference 24
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"
drafting:
This document is Part 1 of GB/T 1972 "Disc Springs": GB/T 1972 has issued the following parts:
--- Part 1: Calculation;
--- Part 2: Technical conditions:
This document is modified to adopt ISO 19690-1:2017 "Disc Springs Part 1: Calculation":
Compared with ISO 19690-1:2017, this document has made the following structural adjustments:
--- 6:3 and 6:4:1 of this document correspond to 6:3 of ISO 19690-1:2017;
--- 6:4:2 of this document corresponds to 6:4 of ISO 19690-1:2017;
--- 6:4:3 of this document corresponds to 6:5 of ISO 19690-1:2017;
--- 6:4:4 of this document corresponds to 6:6 of ISO 19690-1:2017;
--- 6:4:5 of this document corresponds to 6:7 of ISO 19690-1:2017;
--- 8:1 of this document corresponds to 9:1 and 9:2 of ISO 19690-1:2017;
--- 8:2 and 8:3 of this document correspond to Chapter 8 of ISO 19690-1:2017:
The technical differences between this document and ISO 19690-1:2017 and their reasons are as follows:
--- Replaced ISO 26909 (see Chapter 3) with the normatively quoted GB/T 1805 to adapt to the technical conditions of our country;
--- Deleted the reference to ISO 16249 (see Chapter 4);
--- Added the load calculation formula (9) and formula (11) of the disc spring during flattening (see 6:4:2), because the computer-aided calculation method is not used
When calculating, the flattened load will be used;
--- Changed Figure 3 (see 7:1:2), which is more in line with the actual situation in our country;
---Changed the value of h0/t of the single disc spring (see 7:2:1) to avoid ambiguity when selecting the C series disc spring (h0/t≈1:30);
--- Changed the allowable stress requirements for static loads, and added a reference to the normative reference file GB/T 1222 (see 8:2):
The following editorial changes have been made to this document:
--- Modified the title of Figure 1 (see 5:1);
--- Put the normative reference document GB/T 1972:2-2023 "Disc Spring Part 2: Technical Conditions" into the reference;
---In 8:3:2, three examples about the key positions of disc spring fatigue damage have been added;
--- Increased Appendix A (informative) calculation examples;
--- Added Appendix B (informative) other combined disc springs;
--- Increased the influence of appendix C (informative) friction on spring characteristics;
--- Added Appendix D (informative) commonly used materials for disc springs:
Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed and managed by the National Spring Standardization Technical Committee (SAC/TC235):
This document is drafted by: Shanghai Nuclear Engineering Disc Spring Manufacturing Co:, Ltd:, China Machine Research Institute of Standard Technology (Beijing) Co:, Ltd:, Yangzhou
Hewei Disc Spring Manufacturing Co:, Ltd:, Yangzhou Spring Co:, Ltd:, Langfang Shuangfei Disc Spring Co:, Ltd:, Yangzhou Hengli Disc Spring Manufacturing Co:, Ltd:
Company, Yangzhou Lanyang Spring Manufacturing Co:, Ltd:, Yangzhou Zhongdie Spring Manufacturing Co:, Ltd:, Jiangsu Sanzhong Elastic Technology Co:, Ltd:, Changzhou
Ziqiang Metal Machinery Co:, Ltd:, Kern-Liebers (Taicang) Co:, Ltd:, Xi'an Hangguang Elastic Mold Device Co:, Ltd:
The main drafters of this document: Shen Zijian, Cheng Peng, Zhou Xingyou, Xu Yiming, Ji Bing, Gao Qizhou, Sun Qian, Zhang Yuehai, Guo Wengang, Liu Tongsheng,
Lu Peigen, Xu Zhiyu, Chen Jianyi, Liu Jingbo:
Introduction
Disc spring is a kind of universal elastic element, which is widely used in machinery, chemical industry, aviation, construction and other industries:
GB/T 1972 "Disc Springs" is divided into two parts:
--- Part 1: Calculation: The purpose is to provide a set of standard disc spring structure type, grouping and size series based on
The calculation method of the disc spring in the scope of application provides a theoretical basis for the verification and design of the disc spring:
--- Part 2: Technical conditions: The purpose is to standardize the technical conditions, test methods and acceptance rules of disc springs:
Disc Springs Part 1: Calculations
1 Scope
This document gives the calculation criteria and requirements for single-piece disc springs and combined disc springs (hereinafter referred to as "disc springs") with rectangular cross-sections:
Including definitions of related concepts, calculation formulas and checking of key positions of fatigue damage:
This document applies to single disc springs and combined disc springs:
This document does not apply to grooved disc springs, diaphragm disc springs and other structural types of disc springs:
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document:
GB/T 1222 Spring steel
GB/T 1805 Spring Terminology (GB/T 1805-2021, ISO 26909:2009, MOD)
3 Terms and Definitions
The terms and definitions defined in GB/T 1805 apply to this document:
4 Symbols, parameter names and units
The symbols, parameter names and units used in this document are shown in Table 1:
Table 1 Symbols, parameter names and units
Symbolic parameter name unit
C1,C2,C3,C4,k1,k2 Coefficients-
D Outer diameter mm
D0 neutral diameter mm
d Inner diameter mm
E Elastic modulus of material MPa
F Single disc spring load N
Fc is the calculated load N of the single disc spring at the flattened position
FG combined disc spring (hereinafter referred to as "combined disc spring") load N
Ft Detection load (load at Ht position) N
F1, F2, F3, corresponding to the load N of disc spring height H1, H2, H3
Ht The height corresponding to the detection load (Ht=H0-0:75h0) mm
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