【国际标准】ASME B18.2.7.1M-2002(R2007) 米制12键槽凸缘螺钉.pdf

1、Erratum to Metric 12-Spline Flange Screws ASME B18.2.7.1M-2002 . On page 6, angle in right figure to Table 4 revised. The complete table appears on the overleaf. THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS Three Park Avenue, New York, NY 10016-5990 Decem ber 2002 MO1 81 E Copyright ASME Internation

2、al Provided by IHS under license with ASME Licensee=FMC Technologies /5914950002 Not for Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- a - a l - E al- ;$+ z Y 9 9 9 9 9 9 9 9 rzNMBg;m$ Trnq.o3?9. 0 0 0 0 0 0 r r Copyright ASME International Pro

3、vided by IHS under license with ASME Licensee=FMC Technologies /5914950002 Not for Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies /5914950002 Not for

4、Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- w w w . b z f x w . c o m The American Society of Mechanical Engineers AN A M E R I C A N N A T I O N A L S T A N D A R D METRIC FLANGE SCREWS 1 P-SPlI#E ASME B18.2.7.1 M-2002 Copyright ASME Interna

5、tional Provided by IHS under license with ASME Licensee=FMC Technologies /5914950002 Not for Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- w w w . b z f x w . c o m Date of Issuance: March 15,2002 This Standard will be revised when the Society

6、approves the issuance of a new edition. There will be no addenda issued to this edition. ASME will issue written replies to inquiries concerning interpretation of technical aspects of this Standard. ASME is the registered trademark of The American Society of Mechanical Engineers. This code or standa

7、rd was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuais from competent and concerned interests have had an opportunity to participate. The proposed code or

8、 standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. ASME does not approve, rate, or endorse any item, construction, proprietary device, or activity. ASME does not ta

9、ke any position with respect to the validity of any patent rights asserted in connection with any items mentioned in thisdocument, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of

10、 a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representative(s1 or person(s) affiliated with industry i s not to be interpreted

11、 as government or industry endorsement of this code or standard. ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals. No part of this documen

12、t may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright (o 2002 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights

13、 Reserved Printed in U.S.A. Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies /5914950002 Not for Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- w w w . b z f x w . c o m CONTENTS Foreword . Committee

14、 Roster . v vi . Correspondence With the B 18 Committee . VIU 1 General Data . 1 2.1 Scope . 1 2 Comparison With IS0 Standards . 1 3 Referenced Standards . 1 4 Dimensions . 2 5 Spline . 2 6 Top of Head . 2 7 Head Height . 3 8 Spline Height . 3 9 Position of Head . 3 10 Flange . 3 11 Bearing Surface

15、. 3 12 Fillet . 3 13 Body Diameter . 3 14 Length . 4 15 Point . 4 16 Straightness . 4 17 Thread Length . 6 17.1 Grip Gaging Length. L,max . 6 17.2 Body Length. L,min . 8 17.3 Nominal Thread Length. B . 8 17.4 Transition Thread Length. X . 8 18 Threads . 8 18.1 Thread Series and Tolerance Class . 8 .

16、 111 Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies /5914950002 Not for Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- 18.2 Acceptability . 8 19 Material and Mechanical Properties . 19.1 Steel . 19

17、.2 Corrosion-Resistant Steels . 19.3 Nonferrous Metals . 20 Finish . 21 Identification Symbols . 21.1 Property Class Symbols . 21.2 Source Symbols . 22 Options . 23 Terminology . 24 Workmanship . 25 Clearance Holes . 26 Designation . 27 Inspection and Quality Assurance . 28 Dimensional Conformance .

18、 Tables 1 Wrenching Configurations for 12-Spline Flange Screws . 2 Position Tolerance. Circular Runout. and Minimum Body Diameter . 3 Fillet Configuration Dimensions . 5 Dimensions of Reduced Body Diameter (Type R) . 6 Screw Length Tolerances . 7 Point Radius . 8 Maximum Grip Gaging Lengths. L. and

19、Minimum Body Lengths. L. for 12-Spline Nonmandatory Appendix A 4 Dimensions of 12-Spline Range Screws . Flange Screws . Screw Straightness and Gaging Procedure . 8 8 9 9 9 9 9 9 9 9 9 7 11 iv Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies /5914950002 N

20、ot for Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- FOREWORD American National Standards Committee B18 for the standardization of bolts, screws, nuts, rivets, and similar fasteners was organized in March 1922 as Sectional Committee B 18 under

21、the aegis of the American Engineering Standards Committee (later the American Standards Association, then the United States of America Standards Institute and, as of October 6, 1969, the American National Standards Institute, Inc.), with the Society of Automotive Engineers and the American Society o

22、f Mechancial Engineers as joint sponsors. Subcommittee 2 was subsequently established and charged with the responsibility for technical content of standards covering wrench head bolts and nuts. In 1971, the ANSI Special Study Committee began an investigation of optimum head designs for metric fasten

23、ers. A new head configuration which would have superior performance capabilities when compared to a standard hexagon head design was envisioned. These studies led to the development of a 12-spline flanged screw which was determined to have the following advantages: (u) Lower nominal bearing pressure

24、s (6) Flange protection of assembled surfaces against abrasion due to wrenching tools (c) Lower stress concentration factors in head-to-shank fillets fd) Significant savings in raw material, about 30% in smaller sizes and 10% in intermedi- ate sizes A detailed analysis is included in “Transition of

25、Technical Conference on Metric Mechanical Fasteners”, ANSI SR17 or ASTM STP 587. Published originally as IFI-511 in 1976, the standard was withdrawn in 1986 because of relatively small demand. However, B18 has reviewed this standard and felt that it offers significant product advantages which may en

26、courage its increased acceptance. Subcommittee 2 of B18 was assigned the responsibility of developing this new consensus standard. Beginning in 1996, this standard was completed and approved by the B18 Standards Committee on May 1, 2001. This Standard was approved by the American National Institute

27、on January 24, 2002. V Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies /5914950002 Not for Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ASME BI8 STANDARDS COMMITTEE Standardization of Bolts, Nuts,

28、 Rivets, Screws, Washers, and Similar Fasteners (The following is the roster of the Committee at the time of approval of this Standard.) OFFICERS D. A. Clever, Chair R. D. Strong, Vice Chair S. W. Vass, Vice Chair R. L. Crane, Secretary COMMITTEE PERSONNEL J. Altman, Rotor Clip Co. J. H. Slass, Alte

29、rnate, Rotor Clip Co. J. B. Belford, Lawson Products, Inc. R. M. Byrne, Trade Association Management, Inc. D. A. Clever, Deere however, they should not contain proprietary names or information. Requests that are not in this format will be rewritten in this format by the Committee prior to being answ

30、ered, which may inadvertently change the intent of the original request. ASME procedures provide for reconsideration of any interpretation when or if additional information that might affect an interpretation is available. Further, persons aggrieved by an interpretation may appeal to the cognizant A

31、SME Committee or Subcommittee. ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity. Attending Committee Meetings. The B 18 Standards Committee regularly holds meetings, which are open to the public. Persons wishing to attend any meeting sh

32、ould contact the Secretary of the B18 Standards Committee. viii Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies /5914950002 Not for Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ASME B18.2.7.1M-200

33、2 METRIC 12-SPLINE FLANGE SCREWS 1 GENERAL DATA 1.1 Scope (u) This Standard covers the complete general and dimensional data for metric 12-spline flange screws recognized as American National Standard. (b) The inclusion of dimensional data in this Standard is not intended to imply that all of the si

34、zes in conjunc- tion with the various options described herein are stock items. Consumers should consult with suppliers concerning lists of stock production 12-spline flange screws. (c) The wrenching configuration is defined in SAE AS1325. 2 COMPARISON WITH IS0 STANDARDS (u) At this time no IS0 stan

35、dard for spline drive screws exists, except those for aerospace fasteners included in IS0 9254 and IS0 9255. Further, no work within IS0 is expected for some time. These splines are not interchangeable with the aerospace IS0 spline designs. (b) Letter symbols designating dimensional charac- teristic

36、s are in accord with those used in IS0 standards, except where capitals have been used instead of lower case letters used in IS0 standards. 3 REFERENCED STANDARDS Unless otherwise specified, the standard( s) referenced shall be the most recent issue at the time of order placement. ASME B1.13M, Metri

37、c Screw Threads-M Profile ASME B1.3M, Screw Thread Gaging Systems for Dimensional Acceptability - Inch and Metric Screw Threads (UN, UNR, UNJ, M, and MJ) ASME B18.2.8, Clearance Holes for Bolts, Screws and Studs ASME B18.12, Glossary of Terms for Mechanical Fasteners ASME B18.18.1M, Inspection and Q

38、uality Assurance for General Purpose Fasteners ASME B18.18.2M, Inspection and Quality Assurance for High-Volume Machine Assembly Fasteners ASME B18.24.1, Part Identifying Number (PIN) Code System Standard for B18 Externally Threaded Fas- teners ASME Y 14.5M, Dimensioning and Tolerancing Publisher: A

39、merican Society of Mechanical Engineers (ASME), Three Park Avenue, New York, NY 10016- 5990; Order Department: 22 Law Drive, Box 2300, Fairfield. NJ 07007-2300 ASTM F 468M, Standard Specification for Nonferrous Bolts, Hex Cap Screws, and Studs for General Use (Metric) ASTM F 568M, Standard Specifica

40、tion for Carbon and Alloy Steel Externally Threaded Metric Fasteners ASTM F 738M, Standard Specification for Stainless Steel Metric Bolts, Screws and Studs ASTM F 788F 788M, Standard Specification for Sur- face Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series Publisher: American S

41、ociety for Testing and Materials, (ASTM), 100 Barr Harbor Drive, West Consho- hocken, PA 19428-2959 SAE AS1325, Wrench Configuration, 12 Lobed Drive Publisher: Society of Automotive Engineers (SAE), 400 Commonwealth Drive, Warrendale, PA 15096-0001 IS0 9254, Aerospace-Bolt, Nomal Spline Head, Nor- m

42、al or Pitch Diameter Shank, Long Length MJ Threads, Metallic Material, Coated or Uncoated, Strength Classes Less Than or Equal to 1100 MPa- Dimensions IS0 9255, Aerospace-Bolts, Normal Spline Head, Normal Shank, Short or Medium Length MJ Threads, Metallic Material, Coated or Uncoated, Strength Class

43、es Less Than or Equal to 1100 MPa-Dimen- sions Publisher: International Organization for Standardization (ISO), 1 rue de Varemb, Case Postale 56, CH- 121 1, Genve 20, SwitzerlandSuisse 1 Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies /5914950002 Not fo

44、r Resale, 05/18/2009 23:29:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ACME ia.2.7.1-2002 METRIC 12-SPLINE FLANGE SCREWS 4 DIMENSIONS (a) All dimensions in this standard are in millimeters and apply before any coating, unless stated otherwise. (b) Symbols specifying

45、geometric characteristics are in accord with ASME Y14.5M. 10 FLANGE The top surface of the flange shall be conical or slightly rounded and the periphery shall be round within the specified maximum flange diameter and a tolerance of minus 5 percent. The contour of edge at flange periphery shall be op

46、tional, provided the minimum flange thickness is maintained at the minimum bearing circle diameter. 5 SPLINE Dimensions of the spline are given in Table 1. 6 TOP OF HEAD 11 BEARING SURFACE The bearing surface shall be conical 0.7520.50 deg concave from the plane formed by the bearing circle diameter

47、. The plane formed by the- bearing circle shall be perpendicular to the axis of the shank, over a length under the head equal to the nominal screw diameter D, within the circular runout specified in Table 2. The measurement of bearing face runout shall be made at the actual bearing circle; i.e., at

48、the line of highest points on any radial line e.g., by use of a straight edge anvil. The datum shall be as close to the head as practicable but within 0.5D from the head, and shall be either wholly plain body or wholly the thread The top of head shall be either full form or indented, at manufacturer

49、s option. Top of head shall be chamfered or rounded, and the minimum diameter of chamfer circle or start of rounding shall be the minimum O.D. of spline, A, min., minus 2 times the maximum chamfer height, K1. For indented heads, the indent shall have a maximum diameter equal to 0.75 times the minimum root of spline, B, min., and a depth not to exceed the maximum chamfer height, Ki. 7 HEAD HEIGHT The head height, K, is the distance, as measured parallel to the axis of the screw, from the top of the head, excluding raised markings, to the plane of the bearing circle diameter. 8 SPLI