1、ASME B94.51M-1999(Revision of ASME B94.51M-1994)SPECIFICATIONS FORBAND SAW BLADES(METAL CUTTING)AN AMERICAN NATIONAL STANDARDIntentionally left blank AN AMERICAN NATIONAL STANDARDSPECIFICATIONS FORBAND SAW BLADES(METAL CUTTING)ASME B94.51M-1999(Revision of ASME B94.51M-1994)p. 1 12-06-99 16:03:56 Un
2、it: ucp Textfile: b9451m$cpe p. 1Date of Issuance: December 31, 1999This Standard will be revised when the Society approves the issuance ofa new edition. There will be no addenda or written interpretations of therequirements of this Standard issued to this edition.ASME is the registered trademark of
3、 The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria forAmerican National Standards. The Standards Committee that approved the code or standardwas balanced to assure that individuals from competent and concerned interes
4、ts have had anopportunity to participate. The proposed code or standard was made available for public reviewand comment that provides an opportunity for additional public input from industry, academia,regulatory agencies, and the public-at-large.ASME does not “approve,” “rate,” or “endorse” any item
5、, construction, proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted inconnection with any items mentioned in this document, and does not undertake to insure anyoneutilizing a standard against liability for infringement of any appl
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8、terpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990Copyright 1999 byTHE AMERICAN
9、 SOCIETY OF MECHANICAL ENGINEERSAll Rights ReservedPrinted in U.S.A.p. 3 12-03-99 10:37:50 Unit: ufw Textfile: b9451m$fw p. 3FOREWORDThe first band saw standard was issued by the United States Department of Commercein 1945. The standard was a joint industry effort geared at reducing the number of ba
10、ndsaw sizes and thereby simplifying the manufacturing of band saws during World War II.Three years later, in cooperation with the Department of Commerce, the Band SawManufacturers Association (a predecessor organization of the Hack and Band Saw Manufactur-ers Association of America) issued a Simplif
11、ied Practice Recommendation. At that time,seven new sizes were added to the existing wartime sizes in order to meet consumer needs.In 1954, the Band Saw Manufacturers Association requested that hook tooth band sawsbe added. At that time an additional 15 sizes were added. In 1961, 3 new wavy sizes, 8
12、raker sizes, and 1 skip size were added.Recognizing the interest in international standards evidenced by both American producersand consumers, the Hack and Band Saw Manufacturers Association of America submittedin 1967 a general set of standard band saw sizes to the American National StandardsInstit
13、ute for adoption under the existing standards method of procedure. This action resultedin the issuance of the first American National Standard Specifications for Band Saw Blades(ANSI B122.1-1970).As a result of work in the 1970s in the area of international standards, the Hack andBand Saw Manufactur
14、ers Association, who were the Secretariat for the promulgation of thestandard (ISO/TC29-WG25), felt that additional information should be available to manufactur-ers, distributors, and users that would enable them to produce, sell, and utilize better bandsaw blades.Added sections included:(a) sugges
15、ted composition guidelines for intermediate, composite, and high speed steelband saws;(b) hardness limits;(c) tooth form suggestions;(d) tooth set tolerances;(e) flatness tolerances.In order to promulgate the standard as an update of ANSI B122.1-1970, the industrysubmitted the document to the Americ
16、an National Standards Committee B94. This Committeeformed a Subcommittee to consider standards for hack and band saws.The resulting standard was submitted to the full ANSI B94 Committee, who achievedconsensus by means of procedures accepted by the American National Standards Institute.The American S
17、ociety of Mechanical Engineers was the Secretariat for B94 and supervisedthe promulgation of the standard with expertise furnished by individual members.The original revision of B122.1-1970 was redesignated as B94.51-1976 and approved asan American National Standard on September 13, 1976.The present
18、 revision, formulated by the ASME B94 Committee under procedures acceptedby the American National Standards Institute, was approved as an American NationalStandard on April 14, 1999.iiiIntentionally left blank p. 5 12-03-99 10:37:59 Unit: ucr Textfile: b9451m$cr p. 5ASME STANDARDS COMMITTEE B94Cutti
19、ng Tools, Holders, Drivers, and Bushings(The following is the roster of the Committee at the time of approval of this Standard.)OFFICERSP. Bourg, ChairP. Esteban, SecretaryCOMMITTEE PERSONNELP. Bourg, Tivoly, Inc.A. M. Bratkovich, The Association of Manufacturing TechnologyE. J. Czopor, E and it als
20、o sets out the determination of:(a) band saw blade dimensions;(b) tooth form and set;(c) blade flatness and minimum hardness character-istics.This is a Standard for use in the United States ofAmerica, its territories and protectorates. ThereforeEnglish units are considered standard dimensions. Metri
21、cdimensions shown are based on the Renard R-40 systemfor conversion and are for the guidance of those coun-tries using metric units as their standard.2 FIELD OF APPLICATIONThis Standard applies to carbon hard edge flexibleand tempered back band saw blades and compositesteel band saw blades; informat
22、ion on friction cuttingband saw blades is set forth in Appendix I.3 DEFINITIONSFor the purpose of this Standard, the followingdefinitions are set forth.band saw blade: an endless blade manufactured of acontinuous strip of steel having one toothed edge asdefined in Fig. 1. The body of the blade may b
23、ehardened and tempered to impart strength to the bladein certain types. This strip may be available as coilstock or cut and welded to length.carbon hard edge flexible back band saw blades: madefrom steel strip with one toothed edge. The toothededge is harder than the body of the saw below thegullets
24、 of the teeth, having a minimum hardness at thepoint of the tooth not less than 62 Rockwell C. The1Back edgeBodyToothed edgeFIG. 1 BAND SAW BLADEbody of the blade after heat treating shall not be lessthan 25 Rockwell C nor more than 38 Rockwell C.carbon hard edge tempered back band sawblades: made f
25、rom steel strip with one toothed edge.The toothed edge is harder than the body of the sawbelow the gullets of the teeth, having a minimumhardness at the point of the tooth not less than 62Rockwell C. The body of the blade after heat treatingshall not be less than 38 Rockwell C nor more than48 Rockwe
26、ll C.NOTE: Carbon hard edge flexible back and tempered back bandsaw blades are generally classified as metal cutting, but as definedhere the term includes all such band saw blades irrespective ofactual or intended posite steel band saw blades: made with a cuttingedge of high speed steel, as defined
27、below, welded toa backing of low alloy spring steel (similar to 6150),and the gullets of the teeth shall extend below theweld. The cutting edge is harder than the body of thesaw and has a minimum hardness at the point of theteeth not less than 62 Rockwell C. The body of theblade after heat treating
28、shall not be less than 37Rockwell C nor more than 52 Rockwell C.In manufacturing this blade, alternative alloying steelsof equivalent or superior properties may be used.hardness: hardness testing of band saws is a special-ized art and can be accomplished by the followingmethods: Superficial Rockwell
29、 15N, Vickers, or microhardness. Any of the readings taken from the abovemethods can then be converted to Rockwell C equiva-lents by using an approximate conversion table.NOTE: See conversion table in Appendix I.p. 2 07-18-01 08:24:01 Unit: U1 Textfile: B9451M$01 p. 2SPECIFICATIONS FOR BAND SAW BLAD
30、ES (METAL CUTTING)ASME B94.51M-1999FlankRoot radiusGulletCutting edgeFaceSetSetThicknessSideSideTooth totooth pitchOverall setWidthFIG. 2 TOOTH FEATURESoverall set: the total width of the extreme distanceof opposite teeth, taking into account the set on eitherside of the blade that determines the ov
31、erall width ofcut (see Fig. 2).pitch: the distance between apices of adjacent teethmeasured in millimeters. Teeth per unit length is thenumber of complete teeth per 25.4 mm (1 in.) length.NOTE: Pitch and teeth per in. (mm) are reciprocals of each other.tooth set: the projection of the teeth from the
32、 sideof the blade to provide cutting clearance (see Fig. 2).3.1 Tooth Nomenclaturecutting edge: the transverse edge formed by the inter-section of the flank and the face (see Fig. 2).face: that surface of the tooth adjacent to the cuttingedge, on which the chip impinges as it is severed fromthe work
33、 (see Fig. 2).flank: that surface behind the cutting edge whichextends to the root radius (see Fig. 2).2gullet: the space bounded by the face, root radius,and flank of a tooth which permits the removal of thesevered chips (see Fig. 2).rake angle: the incline of the face of the nonset toothfrom the p
34、erpendicular.side: the flat surface between the toothed edge andthe back edge (see Fig. 2).4 TOOTH FORM AND SET4.1 Tooth FormTooth form may be varied to suit the individualmanufacturer, the user, and the material to be cut. Thebasic types of tooth form are listed below.(a) Regular or Standard. Regul
35、ar or standard toothform has zero degree rake angle, full round gullets,and is the most widely used design (see Fig. 3). Thistooth style is furnished in alternate, raker, and wavyset (see para. 4.2).(b) Skip. Skip tooth form is basically a regular toothp. 3 07-18-01 08:24:01 Unit: U1 Textfile: B9451
36、M$01 p. 3SPECIFICATIONS FOR BAND SAW BLADES (METAL CUTTING) ASME B94.51M-1999FIG. 3 REGULAR OR STANDARD TOOTHFORMform with every alternate tooth removed (see Fig. 4).The large pitch increases the chip space within thegullet without making the tooth depth too great at theexpense of blade strength.(c)
37、 Hook. Hook tooth form is similar to skip toothsee para. 4.1(b), except the rake angle of the toothis positive (see Fig. 5).4.2 Tooth SetThe basic types of tooth set are listed below.(a) Alternate. This is a transverse setting of individualteeth, alternately to the right and the left (see Fig. 6).(b
38、) Raker. This is a transverse setting of individualteeth, one to the right, one to the left, and one unset(see Fig. 7).(c) Wavy. This is a transverse setting of groups ofteeth to the left and right (see Fig. 8).(d) Variable Raker. Variable raker set is a specialset used on variable pitch teeth. Teet
39、h are alternatelyset to the right and to the left with one unset toothin each variable pitch sequence. The number of setteeth between unset teeth varies with tooth specifications(see Fig. 9).5 DIMENSIONS AND TOLERANCES5.1 WidthBand saw blades can be of the following nominalwidths:2mm (116in.)3mm (18
40、in.)5mm (316in.)6mm (14in.)10 mm (38in.)13 mm (12in.)16 mm (58in.)19 mm (34in.)25 mm (1 in.)27 mm (1 in.)32 mm (114in.)41 mm (112in.)50 mm (2 in.)67 mm (258in.)80 mm (318in.)NOTE: R-40 system.3FIG. 4 SKIP TOOTH FORMFIG. 5 HOOK TOOTH FORMFIG. 6 ALTERNATE TOOTH SETFIG. 7 RAKER TOOTH SETFIG. 8 WAVY TOO
41、TH SETFIG. 9 VARIABLE RAKER TOOTH SET5.1.1 Width Tolerance. The manufacturing widthtolerance shall be:Width ToleranceAll widths (mm) (+ 0, 0.51 mm)All widths (in.) (+ 0, 0.020 in.)p. 4 07-18-01 08:24:01 Unit: U1 Textfile: B9451M$01 p. 4SPECIFICATIONS FOR BAND SAW BLADES (METAL CUTTING)ASME B94.51M-1
42、9995.2 ThicknessBand saw blades can be of the following thicknesses:0.5 mm (0.020 in.)0.6 mm (0.025 in.)0.8 mm (0.032 in.)0.9 mm (0.035 in.)1.1 mm (0.042 in.)1.3 mm (0.050 in.)1.6 mm (0.063 in.)NOTE: R-40 system.5.2.1 Thickness Tolerance. The manufacturingthickness tolerance shall be:Thickness Toler
43、ance0.50 mm (0.020 in.) 0.025 mm (0.0010 in.)0.6 mm (0.025 in.) 0.025 mm (0.0010 in.)0.8 mm (0.032 in.) 0.027 mm (0.0011 in.)0.9 mm (0.035 in.) 0.027 mm (0.0011 in.)1.1 mm (0.042 in.) 0.034 mm (0.0013 in.)1.3 mm (0.050 in.) 0.038 mm (0.0015 in.)1.6 mm (0.063 in.) 0.051 mm (0.0020 in.)5.3 Tooth Set T
44、oleranceThe amount of set shall be the standard adopted at thediscretion of each manufacturer to meet the customersrequirements. The set at each side of the blade shallbe similar and maintained within the limits of 0.05mm (0.002 in.) or 0.10 mm (0.004 in.) overall.5.4 Flatness (Dish) TolerancesThe b
45、and saw material shall be flat across the sectionalprofile (see Fig. 10), and the tolerance shall be:Permissible DepartureStrip Width From Flatness (Dish)Up to and including13 mm (12in.) 0.010 mm (0.0004 in.)16 mm (58in.) 0.015 mm (0.0006 in.)19 mm (34in.) 0.020 mm (0.0008 in.)25 mm (1 in.) 0.025 mm
46、 (0.0010 in.)27 mm (1 in.) 0.038 mm (0.0011 in.)32 mm (114in.) 0.046 mm (0.0018 in.)41 mm (112in.) 0.053 mm (0.0021 in.)50 mm (2 in.) 0.091 mm (0.0036 in.)67 mm (258in.) 0.107 mm (0.0042 in.)80 mm (318in.) 0.152 mm (0.0060 in.)4Departure from flatness (dish)FIG. 10 BAND SAW FLATNESS (DISH)TOLERANCE5
47、.5 Nominal DimensionsThe dimensions for band saw blade backs are setforth as follows:Table 1 Carbon Hard Edge Flexible BackTable 2 Carbon Hard Edge Tempered BackTable 3 Composite Steel5.6 CamberThe amount of camber shall be the standard adoptedat the discretion of the blade manufacturer to meet thec
48、ustomers requirements.6 PITCH SIZESFixed pitch sizes allowed by this Standard are givenin Table 4. Variable pitch sizes allowed by this Standardare given in Table 5.7 COMBINATIONS OF NOMINALDIMENSIONS AND PITCHESNominal dimensions and pitches for band saw bladesare set forth as follows:Table 1 Carbo
49、n Hard Edge Flexible Back (seeSection 3)Table 2 Carbon Hard Edge Tempered Back (seeSection 3)Table 3 Composite Steel (see Section 3)p. 5 07-18-01 08:24:01 Unit: U1 Textfile: B9451M$U1 p. 5SPECIFICATIONS FOR BAND SAW BLADES (METAL CUTTING) ASME B94.51M-1999TABLE 1 CARBON HARD EDGE FLEXIBLE BACKRegular Type (Raker Set)Size(width thickness) Number of Teeth per 25.4 mm (1 in.)mm in. 6 8 10 14 18 242 0.6116 0.025 . . . . . . . . . . . . . . . +3 0.618 0.025 . . . . . . . . . + + . . .5 0.6316 0.025 . . . . . . + . . . . . . .
