ASME_B5.31-1953.pdf

suPERSEDED-.Reproduced By GLOBAL f.ENGINEERING DOCUMENTS;s With The Permission Of ASME._IF Under Royalty Agreement A M E R C A N STAND A R Involute Spline and Serration Gages and Gaging ASA 85.31-1953 UDC 621.7 53.3:621.824.4 on or Metal Cutting Tool Institute Society of Automotive Engineers National Machine Tool Builders Association The American Society of Mechanical Engineers BEST COPY AVAILABLE Put/ieJ lJ SOCIETY OF ME C H A N I C A L E N G I N E,E R S 29 West 39th Street,New York 18,N.t 5.J-13 Copyright ASME International Provided by IHS under license with ASME Licensee=University of Alberta/5966844001,User=trert,rtyrtyrtyNot for Resale,03/07/2015 22:06:39 MSTNo reproduction or networking permitted without license from IHS-,-,-FOREWORD THE original Standard for Involute Splines was published in the 1946 SAE Handbook and later issued as an American Standard 85.15-1946.In this Standard a machining tolerance on the thickness of the teeth of both mating parts was the only recognized deviation of tooth form from the ideal.These tolerances in conjunction with clearance or interference allowances established specific sizes.These sizes were expressed in terms of tooth thickness of the ex-ternal spline and space width of the internal fitting,and were controlled by means of pin meas-urements.There were three type of fits and three classes for each type.The National Aircraft Standards Committee(NASC)recognized in the 1946 issue a big step toward the standard needed for airframe construction and sent representatives to meet with Technical Committee No.13,Subgroup 1 at Detroit,April 23 and 24,1947.At this meeting,tolerances and error allowance were discussed,and the concept of effective fit first adopted.Everyone at the meeting was named a member of a new committee on gaging,and number 1-A was adopted.The first meeting was in Chicago,June 17,1947,and at that meeting Technical Committee No.13 decided to adopt the unavoidable errors for class 3 gears,as contained in American Standard 85.6-1946-Gear Tolerances and Inspection.In order to maintain the mini-mum effective space width as basic,the minimum dimensional space width was made greater than basic by the amount of the error allowance,and this action established the basis for spline gaging.This new concept of fit control was incorporated as a revision in the Spline Standard and approved by Technical Committee No.1-3,November 29,1949,and later approved by Sectional Committee 85 and the sponsors and published as 85.15-1950.The first formal meeting of Subgroup No.1-A was held on May 26,1950,with 11 members and 6 guests,all of whom were appointed members of the committee.This increased the mem-bership to 31.Two meetings were held during the year,and repotted on at Technical Committee No.13 meeting on November 28,1950.During 1950,there were three meetings of the Gaging Committee,and many of the various subcommittees.There were 35 members on the Committee representing gage makers,tool makers and gage users,and the February,1952,draft was sent.out for final letter ballot in May,1952.Some editorial revisions were made,and the final edition submitted for sponsor approval in December,1952.Subsequent to sponsor approval,it was presented to the American Standards Association for approval as an American Standard.This approval and designation re given on April 14,1953.Any part of this standard may be quoted.Credit lines should read:Extracted from American Standard Involute Spline and Serration Gages and Gaging(ASA 85.-1953,with the permission of the publisher,The American Society ofMechanical Engineers,29 West 39th Street,New York 18,N.Y.Copyright,1953,by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS Printed in U.S.A.Copyright ASME International Provided by IHS under license with ASME Licensee=University of Alberta/5966844001,User=trert,rtyrtyrtyNot for Resale,03/07/2015 22:06:39 MSTNo reproduction or networking permitted without license from IHS-,-,-I I II Standardization of Small Tools and Machine Tool Elements Officers of Sectional Committee P.L.Houser,Chairman L.M.Dalcher,Secretary Personnel of Technical Committee No.13 S.0.Bjorn berg,Chairman,Illinois Tool Works G.L.McCain,Secretary,Chrysler Corp.J.B.Armitage,Kearney&Trecker Corp.E.H.Babel,Northrop Aircraft,Inc.W.L.Barth,General Motors Corp.A.S.Beam,Vinco Corp.J.P.Breuer,Barber-Colman Co.Bureau of Ships,Code 350,U.S.Navy Dept.G.Carvelli,Wright Aeronautical Corp.J.F.Cramer,Boeing A_ircraft Co.P.M.Dean,General Electric Co.N.Finkelstein,Ford Motor Co.H.N.Gotberg,Colonial Broach Co.B.P.Graves,Brown&Sharpe Mfg.Co.Harold Inch,Jr.,Ford Motor Co.J.E.Lovely,Jones&Lamson Machine Co.H.Morton,General Motors Corp.H.Pelphrey,Michigan TooiCo.C.E.Plouff,Boeing Aircraft Co.P.Pritchard,General Motors Corp.C.R.Rice,Fellows Gear Shaper Co.F.D.Riehle,United Aircraft Corp.G.H.Sanborn,Fellows Gear Shaper Co.W.A.Siler,General Motors Corp.C.B.Smith,Vinca Corp.C.H.Stanard,137 E.Rankin,Flint 5,Mich.C.R.Staub,Michigan Tool Co.G.Tinkle,Illinois Tool Work