1、AMERICAN S.T A N D A R D Accuracy of Engine andTool Room Lathes ASA 85.1 6-1 952 One of a Series of Standards for Small Tools and Machine Tool Elements UDC 621.94.002.1(REAFFIRMED 1972)National Machine Tool Builders Association Society of Automotive Engineers Metal Cutting Tool Institute The America
2、n Society of Mechanical Engineers T H E A M E R I C A N S O C I E T Y OF M E C H A N I C A L E N G I N E E R S United Engineering Center New York 17,N.Y.345 East 47th Street O Copyright ASME International Provided by IHS under license with ASME Licensee=University of Alberta/5966844001,User=trert,rt
3、yrtyrtyNot for Resale,03/07/2015 22:06:16 MSTNo reproduction or networking permitted without license from IHS-,-,-Foreword In 1940 a standard for Accuracy of Engine Lathes,developed b the Engine Lathe Group of standard and submitted to the American Standards Association for approval as an American S
4、tandard.Shortly afterward,the National Machine Tool Builders Association asked that the ASA Emer-gency Procedure be applied to the present standard,to expedite its ublication.The members of the ASA Sectional Committee on Small Tools and Machine Tool E lements(BS),as key indi-viduals in the sense of
5、ASA Emergen.cy Procedure,were canvassed on this question and also on the question of approval of the standaId as an American Defense Emergency Standard.Upon favorable recommendation by the members af sectional committee B5,and the Mechani-cal Standards Committee of the ASA,the standard was approved
6、as an American Defense Emer-gency Standard on May 1,1941.In 1948 the NMTBA adopted a set of tolerances for 40-to 72411.lathes and requested that they be included in a revised ASA standard.They also eliminated the 36411.lathe because that size had been dropped by all makers.These changes were approve
7、d by Technical Committee No.25 in December,1948,and recommended for adoption.A revised draft was pre ared,dated February,1949,which was approved by the sectional com-some suggestions for additional changes were developed and were approved by the technical com-mittee and the sectional committee.Spons
8、or a prova1 followed,and the proposal was then pre-sented to the American Standards Association P or approval and final designation as an American Standard.This designation was given on April 7,1952.the National Machine Tool Builders Association,was adopted by t K e NMTBA as an Association mittee an
9、d submitted to t R e sponsor bodies for their approval.During the review by the sponsors Officers of Sectional Committee on Standardization of Small Tools and Machine Tool Elements P.L.Houmr,Chairman L.M.DPlcher,Secretary Personnel of Technical Committee 25.on Accuracy of Engine and Tool Room Lathes
10、 A.F.Murray,Chairman,Works Mgr.,Electrolux Corp.,Old Greenwich,Conn.John Haydock,Editor,Metal Working,Sutton Publishing Co.,New York,N.Y.F.O.Hoagland,Master Mechanic,Pratt&Whitney Div.,Niles-Bernent-Pond Co.,West Hartford,Conn.Eric Oberg,Consulting Editor,“Machincry,”The Industrial Press,New York,N.
11、Y.(Deceused)Copyright,1952,by The American Society of Mechanical Engincers Printed in U.S.A.Any part of this standard may be quoted.Credit lines should read:“Extracted from-4merican Standard Accuracy of Engine and Tool Room Lathes(ASA B5.16-1952),with the pertnissiort o f the publisAer,The American
12、Society of Mechanical Engineers,29 West 39th Sireet,New York 18,N.Y.Copyright ASME International Provided by IHS under license with ASME Licensee=University of Alberta/5966844001,User=trert,rtyrtyrtyNot for Resale,03/07/2015 22:06:16 MSTNo reproduction or networking permitted without license from IH
13、S-,-,-ASME B5.3b 52 m 2575532 003b5b3 4 m American Standard Accuracy of Engine and Tool Room Lathes Te8t A BED LEVEL-TRANSVERSE DIRECTION-BED LEVEL-LONGITUDINAL DIRECTION Lihcc-I TAILSTOCK WAY ALIGNMENT SPINDLE CENTER RUNOUT SPINDLE NOSE RUNOUT Tool Room Lathes When Using Precision Level All Reading
14、s to Be Within 0.0005 in 1 2 In.When Using Precision Level Along Bed Maximum Read-ing to Be Within o.Ooo5 in 1 2 In.Maximum Read-ing Along Length of Bed 0.0005 in 48 In.Total Indicator Reading o to o.oO04 Total Indicator Reading O to 0.0003 3 Recommended Standards Engine Lathes 1 2 In.to 18 I n.,Inc
15、l.When Using Precision Level All Readings to Be Within o.ooo5 in 1 2 In.When Using Precision Level Along Bed Maximum Read-ing to Be Within o.Ooo5 in i 2 In.Maximum Read.ing Along Length of Bed 0.00075 in 48 In.Total Indicator Reading o to 0.0005 Total Indicator Reading O to 0.0004 20 In.to 32 In.,In
16、cl.When Using Precision Level All Readings to Be Within 0.0 0 1 i n 1 2 In.When Udng Precision Level Along Bed Maximum Read.ing to Be Within 0.0 0 1 in 1 2 In.Maximum Read.ing Along Length of Bed 0.00 1 in 48 In.Total Indiicator Reading O to O.O075 Tow Indicator Reading O to 0.0006 10 In.to 72 In.,Incl.When Using Precision Level AU Readings to Be Within 0.001 in 12 In.When Using Precision Level qlong Bed axunum Read zg to Be Withi 0.0 0 1 in 12 In.daximum Read ing Along Length of Bed 0.0 0 1 in