1、AMERICAN NATIONAL STANDARD Spade Drill Blades and Spade Drill Holders A NSI B94.49-1975 SECRETARIAT THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS PUBLISHED BY THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS United Engineering Center 345 East 47th Street New York,N.Y.10017 REAFFIRMED 2010FOR CURRENT COMM
2、ITTEE PERSONNELPLEASE E-MAIL CSasme.orgNo 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 1976 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.FOREW
3、ORD Flat type drills have been used to produce holes since the dawn of recorded history.In recent times a flat drill commonly called a spade drill,has been used for producing larger size holes.Generally above 26mm diameter.The type of spade drill presently in use was first introduced commercially in
4、 1945 and was called a Z type.In 1947 a three hole blade,called X type,and a single bolt hole,called Y type,spade drills were introduced.During 1948 a second concern introduced a two bolt hole design along with a single bolt hole design that was not completely compatible with the other single hole b
5、lade.This situation did not create a problem as long as there were very few producers of spade drills.During the next two decades the use of spade drills increased along with the number of suppliers.A Department of Commerece report in 1965 stated that there were 42 suppliers of spade drills.There wa
6、s much confusion among users regarding interchangeability between the different types and between the same types of spade drill blades and holders from the various suppliers.Technical Committee 18 was established during the 1970 Annual Meeting of the American National Standards Institute Committee B
7、94 to develop an American Standard for Spade Drill Blades and Spade Drill Holders.The first meeting of TC-18 was held in April 1971.Because the two hole,three hole,Z,and other types of spade drills were not universally used it was decided that only the single bolt hole spade drill blade and holder w
8、ould be considered for this standard.The draft of the completed standard for Spade Drill Blades and Spade Drill Holders was submitted to the Secretariat,The American Society of Mechanical Engineers,for review in June 1974.This document was adopted as an American National Standard on September 10,197
9、5.iii AMERICAN NATIONAL STANDARDS COMMITTEE 894 Standardization of Cutting Tools,Holders,Drivers and Bushings OFFICERS Harry Mclinden,Chairman A.H;Mezey,Vice-Chairman Kurt Wessely,Secretary AMERICAN GEAR MANUFACTURERS ASSOCIATION,THE P.M.Dean,Jr.,Mechanical Technology,Inc.,Latham,New YorkG.L.Scott,A
10、lternate,American Gear Mfrs.Assn.,Washington,D.C.AMERICAN SOCIETY OF MECHANICAL ENGINEERS,THE M.E.Merchant,Cincinnati Milacron,Inc.,Cincinnati,OhioG.M.Monacelli,General Electric Co.,Detroit,Michigan C.J.Oxford,Jr.,National Twist Drill&Tool Co.,Rochester,MichiganG.F.Wilson,Alternate,Consultant,Wheeli
11、ng,IllinoisCEMENTED CARBIDE PRODUCERS ASSOCIATION W.E.Montgomery,Firth sterling,Inc.,McKeesport,Pennsylvania A.P.Wherry,Alternate,Cemented Carbide Producers Assn.,Cleveland,Ohio GENERAL SERVICES ADMINISTRATION W.R.Wacker,General Services Administration,Washington,D.C.HACK&BAND.SAW MANUFACTURERS ASSN
12、.OF AMERICA Richard Schrade,Clemson.Eros.,Inc.,Middletown,New York J.E.Bates,Alternate,Hack&Band Saw Manufacturers Association,Mt.Prospect,Illinois METAL CUTTING TOOL INSTITUTE W.A.Wagner,Cleveland Twist Drill Co.,Cleveland,Ohio R.M.Byrne,Alternate,Metal Cutting Institute,New York,New York NATIONAL
13、ASSOCIATION OF PUNCH MANUFACTURERS R.E.Smith,Dayton Progress Corp.,Dayton,Ohio NATIONAL BUREAU OF STANDARDS J.R.Pidgeon,National Bureau of Standards,Washington,D.C.NATIONAL MACHINE TOOL BUILDERS ASSOCIATION G.F.Wilson,Consultant,Wheeling,Illinois E.J.Loeffler,Alternate,National Machine Tool Builders
14、 Association,McLean,Virginia SOCIETY OF AUTOMOTIVE ENGINEERS To be appointed SOCIETY OF CARBIDE ENGINEERS C.H.Lang,c/o Society of Carbide Engineers,Bridgeville,PennsylvaniaSOCIETY OF MANUFACTURERS ENGINEERS K.A.Lundell,The Producto Machine Co.,Jamestown,New York H.J.Moffatt,Bartonville,Illinois W.N.
15、Moore,The Ford Motor Co.,Dearborn,Michigan TELEPHONE GROUP,THE R.A.Agnew,Western Electric Co.,Chicago,Illinois S.P.Rogacki,Alternate,Western Electric Co.,Inc;,Kearney,New Jersey U.S.DEPARTMENT OF THE AIR FORCE To be appointed U.S.DEPARTMENT OF THE ARMY D.L.York,Liaison,General Thomas J.Rodman Labora
16、tory,Rock Island,IllinoisU.S.DEPARTMENT OF THE NAVY J.N.Cornette,Liaison,Naval Ship Systems Command,Washington,D.C.V U.S.MACHINE SCREW BUREAU Herman Muenchinger,Continental Screw Co.,New Bedford,Massachusetts D.E.Chase,Alternate,Continental Screw Co.,New Bedford,Massachusetts INDIVIDUAL COMPANIES Harold Cooper,Chrysler Corp.,Detroit,Michigan William Hofbauer,Mohawk Tools,Inc.,Montpelier,Ohio Kenneth Hull,The Ingersoll Milling Machine Co.,Rockford,Illinois A.M.Mezey,Richards Brothers Punch Co,Det
