1、U S A S T A N D A R D SPINDLE NOSES USAS 85.9 1967 REAFFIRMD 1986 SponJorJ American Society af Tool and Monufocturing Engineers Society of Automotive Engineers National Machine Tool Builders Association The American Society of Mechanical Engineers For Tool Room Lathes,Engine Lathes,Turret Lathes,and
2、 Automatic Lathes THE AMERICAN socrETY OF MECHANICAL ENGINEERS United Engineering Center 345 East 47th Street New York,N.Y.10017 REAFFIRMED 2014FOR CURRENT COMMITTEE PERSONNELPLEASE E-MAIL CSasme.orgACCEPTANCE NOTICE USAS B5.9-1967(R-1972)12 DECEMBER 1978 The above non-Government document was adopte
3、d on 12 December 1978 and is approved for use by the DoD.The indicated industry group has furnished the clearance required by existing regulation.Copies of the document are stocked by the DoD Single Stock Point,Naval Publications and Forms Center,Philadelphia,PA 19120 for issue to DoD activities onl
4、y.Contractors and industry groups must order directly from ASME,345 East 47th Street,New York,NY 10017.Title of Document:Spindle Noses for Tool Room Lathes,Engine Lathes,Turret Lathes,and Automatic Lathes Date of Specific Issue Adopted:1967;Reaffirmed 1972 Releasing Industry Group:American Society o
5、f Mechanical Engineers Custodians:Army-AL Navy-SH Air Force 99 Review activities:Army-AR,ME Navy SH Air Force 99 User activities:Army-GL Air Force-99 Military Coordinating Activity:DLA-IP(Project 34GP-OOOS)No part of this document may be reproduced in any form,in an electronic retrieval system or ot
6、herwise,without the prior written permission of the publisher.Copyright,1967 by fflE AMERICAN SOCIETY OF MECHANICAL ENGINEERS Printed in U.S.A.Foreword T HE first edition of this standard,known as B5.9-1936,was developed by TechnicalCommittee No.4 on Spindle Noses of Sectional Committee B5 on the St
7、andardization of Small Tools and Machine Tool Elements.The second edition,known as B5.9-1948,broadened the scope of the standard to include five sizes of Type L spindle noses,two smaller sizes of Types A,B and D spindle noses,namely,the 2 in.and 3 in.,and a new spindle nose larger than the 20 in.for
8、 Types A and B,now known as the 28-in.nose.Similar changes were made in the American Standard for Chucks and Chuck Jaws(ASA B5.8).The third edition,known as B5.9-1954,incorporated Unified Screw Threads jointly agreed upon by the American Standards Association,the British Standards lnstitution,-and t
9、he Canadian Standards Association.For thread designations and specifications see USA Standard for Unified and American Screw Threads(USAS B1.1-1960).Other minor changes were also incorporated to clarify application of certain tolerances for plug gages,and a new paragraph was added to the text to pro
10、vide balancing instructions.In the fourth edition,approved by ASA on February 5,1960 as B5.9-1960,tolerances for length of pilot and depth of pilot holes for the Type A-1 and Bl spindles were decreased slightly to reflect current actual practice in order to reduce the possibility of distorting the c
11、huck or face plate when mounted on the spindle.For the same reason,.pilot bore diameters for some sizes of these chucks,and corresponding gage dimensions,were changed to reduce interference between chuck and spindle pilot diameters.In addition,the method of dimensioning radial hole locations was cha
12、nged to follow the practice set forth in American Drafting Standards Manual on Dimensioning and Notes(ASA Yl4.5-1957)to insure interchangeability.This Revision supersedes ASA B5.9-1960.Master ring gage inside diameters were slightly increased for some Types A,B and D spindle nose sizes,to coincide w
13、ith the 1960 master plug gage change made to suit the increased chuck pilot diameters.Counterbores for socket head screws were also changed to provide clearance for the 1960 Series cap screws.Tables showing assembly of face plates to Type A and B spindles were eliminated,and tables and pages renumbe
14、red.Tables 35,36 and 37 in this edition,reflect the 1963 revision of Handbook H28-Screw-thread Standards for Federal Services,and the recent USA Standard Gages and Gaging for Unified Screw Threads,USAS BL.2-1966,in changing NOT GO threaded plug gages to HI thread plug gages and NOT GO thread ring ga
15、ges to LO thread ring gages.Following approval by the USA Standards Committee B5 and the sponsors,the revision was approved by the USA Standards Institute on April 21,1967.USA ST AND ARD This USA Standard is one of nearly 3000 standards approved as American Standards by the American Standards Associ
16、ation.On August 24,1966,the ASA was reconstituted as the United States of America Standards Institute.Standards approved as American Standards are now designated USA Standards.There is no change in their index identification or technical content.UDC 621.941-229.3 iii Intentionally left blankUSA STANDARDS STANDARDIZATION MACHINE OF TOOL COMMITTEE B5 SMALL TOOLS ELEMENTS OFFICERS W.H.Seacord,Chairman AND F.Steel Blackall,Ill,Vice-Chairmant C.T.Blake,Vice-Chairman Harold Cooper,Vice-Chairman J.E.Ro
