GB/T 17587.4-2008 English PDF

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GB/T 17587.4-2008: Ball screws -- Part 4: Static axial rigidity
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17587.4-2008	399	Add to Cart	3 days	Ball screws -- Part 4: Static axial rigidity	Valid

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GB/T 17587.3   JB/T 12396   JB/T 6105   GB/T 39829   GB/T 39954   GB/T 17587.1   

Basic data

Standard ID: GB/T 17587.4-2008 (GB/T17587.4-2008)
Description (Translated English): Ball screws -- Part 4: Static axial rigidity
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J51
Classification of International Standard: 25.040.20
Word Count Estimation: 17,133
Date of Issue: 2008-06-03
Date of Implementation: 2009-01-01
Quoted Standard: GB/T 17587.1
Adopted Standard: ISO 3408-4-2006, MOD
Regulation (derived from): National Standard Approval Announcement 2008 No.9 (Total No.122)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the terms and methods of computation ball screw axial static stiffness related.

GB/T 17587.4-2008: Ball screws -- Part 4: Static axial rigidity

---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.
Ball screws Part 4. Static axial rigidity ICS 25.040.20 J51 National Standards of People's Republic of China Ball Screw - Part 4. Static axial stiffness (ISO 3408-4.2006, MOD) Posted 2008-06-03 2009-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 symbols and subscript 1 4.1 Symbols 1 4.2 subscript 2 5 axial static stiffness definition of R 2 5.1 General 2 5.2 axial static stiffness 4 5.3 ball screw axial static stiffness Rbs 4 5.4 ball screw axial static stiffness Rs 4 5.5 ball nut axial static stiffness Rnu 5 5.6 Example 9 Appendix A (informative) Example of calculation in symmetrical double nut system preloaded axial static stiffness of 10 Annex B (informative) correction value is applied loads 12

Foreword

GB/T 17587 "ball screw" is divided into five sections. --- Part 1. Terminology and symbols; --- Part 2. Nominal diameters and nominal leads - Metric series; --- Part 3. Acceptance conditions and acceptance tests; --- Part 4. Static axial stiffness; --- Part 5. Axial rated static and dynamic loads and service life. This section GB/T Part of 417,587. Modify using ISO 3408-4.2006 "ball screw Part 4. Static axial Rigidity "(in English). This part of ISO 3408-4.2006 as compared to the main changes are as follows. --- Taking into account the GB/T 17587.3-1998 "Ball Screw Part 3. Acceptance conditions and acceptance tests" standard ball screws Bar pairs standard tolerance grades have cases Level 2, Level 4 without 0, and in this section 5.5.3 and Appendix B of Table B. 2, Standard tolerance levels increased Level 2, Level 4, the abolition of 0, correspondingly increased the level 2, 4 correction coefficient which is inserted by Calculation into law. --- Modify the corresponding provision in the margin by a vertical bar logo. For ease of use, this section also made the following editorial changes. --- Remove the foreword to international standards; --- The ISO 3408-4 in the "international standards" to "this Part"; --- Use the decimal symbol instead of as a decimal comma ",". ","; --- "Using mathematical formula" × "instead of numbers and multiply the number of".. " This section of the Appendix A, Appendix B is an informative annex. This part is proposed by China Machinery Industry Federation. This part of the National Metal Cutting Machine Standardization Technical Committee (SAC/TC22) centralized. This section is responsible for drafting. Shandong Jinan Ningbo Te Precision Screw Co., Ltd. Participated in the drafting of this section. Nanjing Process Equipment Manufacturing Co., Ltd. Hanjiang Machine Tool. The main drafters of this section. Zhang Rui, Li Jihong, Zhu Jisheng, silver Xian Liu, Wang Aiqing, yellow educating the whole, Benedict Yan Zheng, Li Wenhua. This section first release. Ball Screw - Part 4. Static axial stiffness

1 Scope

GB/T 17587 provisions of this part of the ball screw and axial static stiffness related terms and calculation methods.

2 Normative references

The following documents contain provisions which, through reference GB/T 17587 in this section, constitute provisions of this part. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 17587.1 Ball screws - Part 1. Terminology and symbols (GB/T 17587.1-1998, eqv ISO 3408-1. 1991)

3 Terms and Definitions

Terms and definitions GB/T 17587.1 specified apply to this section.

4 symbols and subscript

4.1 Symbol Symbol Description Unit contact angle α (°) Countdown mm radius of curvature ρ -1 τ contact ellipse of semi-major axis and a short axle ratio - Lead angle φ (°) Ba material constant E - Ba K geometry N-2/3μm Dc mm in diameter on the ball nut at the contact point Dpw pitch diameter mm Dw ball diameter mm D1 mm outer diameter of the ball nut E modulus of elasticity N/mm2 F axial force (axial load) N K stiffness coefficient of performance N/μm ......

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