1、A M E R I C A N N A T I O N A L S T A N D A R D HOBS ANSI B94.7-1980 REVISION OF ANSI B94.7-1966(R 197211.-.REAFFIRMED 1995 FOR CURRENT COMMITTEE PERSONNEL PLEASE SEE ASME MANUAL AS-1 1 SECRE TARlA T THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS PUBLISHED BY T H E A M E R I C A N S O C I E T Y O F M
2、E C H A N I C A L E N G I N E E R S United Engineering Center 345 East 47th Street New York,N.Y.1001 7 Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled
3、when printed.Date of Issuance:March 15,1981 No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.Copyright 01981 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U S A
4、.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORD In response to requests from both users and producers a project was initiated in
5、 December of 1961 to establish standards for gear cutting-tools.Sectional Committee B5 approved this project at their annual meeting in 1961 and created technical committee TC-14 to prepare such standards.In 1962 Sectional Committee B5 was divided and Technical Committees identified with the general
6、 area of“Metal Cutting”were transferred to a new Sectional Committee B94.The first meeting of TC-14;reporting to Sectional Committee B94,was held in December 1962.It was at this time decided to divide the general subject into three areas,i.e.,Hobs,Gear Shaper Cutters and Shaving Cutters.The initial
7、activity was to prepare a proposal for an American Standard on Hobs,using the industry standards(MCTI)as the basis for consideration.A proposal covering Hobs was submitted to industry in September 1964 for review and comment.A l l of the resulting responses were considered at a meeting of TC-14 in M
8、arch 1965 and they then approved a final proposal.The B94 TC-15 Editorial Committee reviewed the proposal and it was submitted on October 27,1965 to the B94 Sectional Committee for Letter Ballot.Following approval by B94 the proposal was approved by the Sponsor,ASME,and on June 22,1966 it was approv
9、ed by the American Standards Association and designated B94.7-1966.The committee was assigned the project of reviewing ASA B94.7-1966 for reaffirmation or revision.The consensus was to review the existing standard and add additional hob sizes to include the larger size nomi-nal diameter bores based
10、on the requirements of the larger hobbing machines in use today.Multiple-thread involute spline hob sizes and tolerances have also been added.We have also made a number of editorial changes.The current revision,after approval of the B94 Standards Committee and the Secretariat,was approved by ANSI on
11、 October 27,1980 and designated B94.7-1980.iii Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.AMERICAN NATIONAL STANDARDS COMMITTEE B94 C
12、utting Tools,Holders,Drivers and Bushings(The following is the roster of the Committee at the time of approval of this Standard)OFFICERS A.R.Neinast,Chairman A.M.Mezey,Vice-chairman R.K.Buckley,Secretary AMERICAN GEAR MANUFACTURERS ASSOCIATION f.M.Dean,Jr.,Mechanical Technology,Inc.Latham,New York R
13、.C.Brown,Alternate,Manager of Engineering Services,Arlington,Virginia AMERICAN SOCIETY OF MECHANICAL ENGINEERS M.E.Merchant,Jr.,Cincinnati Milacron,Inc.,Cincinnati,Ohio C.J.Oxford,Jr.,National Twist Drill&Tool Co.,Rochester,Michigan G.F.Wilson,Alternate,General Electric Co.,Worthington,Ohio CEMENTED
14、 CARBIDE PRODUCERS ASSOCIATION J.A.Woodward,Teledyne Firth Sterling,Pittsburgh,Pennsylvania A.P.Wherry,Alternate,Cemented Carbide Producers Association,Clevehnd,Ohio CUTTING TOOL MANUFACTURERS ASSOCIATION E.J.Czopor,Falcon Tool Company,Warren,Michigan C.W.Jatho,Alternate,Cutting Tool Manufacturers A
15、ssociation,Birmingham,Michigan GENERAL SERVICES ADMINISTRATION W.R.Wacker,Federal Supply Service(FMET),Washington,D.C.HACK&BAND SAW MANUFACTURERS ASSOCIATION OF AMERICA W.B.Korb,The Henry G.Thompson Company,Branford,Connecticut C.M.Stockinger,Alternate,Hack&Band Saw Manufacturers Association of Amer
16、ica,Cleveland,Ohio METAL CUTTING TOOL INSTITUTE W.A.Wagner,Cleveland Twist Drill Company,Cleveland,Ohio F.A.fetersen,Metal Cutting Tool Institute,Cleveland,Ohio MOTOR VEHICLE MANUFACTURERS ASSOCIATION A.R.Neinasr,Corporate Standards International Harvester,Hinsdale,Illinois B.R.Ashby,Alternare,Motor Vehicle Manufacturers Association of the United States,Inc.,Detroit,Michigan NATIONAL ASSOCIATION OF PUNCH MANUFACTURERS R.Thomas,Dayton Progress Corp.,Dayton,Ohio NATIONAL MACHINE TOOL BUILDERS ASSO