1、AMERICAN NATIONAL STANDARD Solid Steel Rectangular Metal Cutting Squaring Shear Knives DimensionaI Tolerances ANSI 694.53 - 1978 SECE TARIA T THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS THE AMERICAN SOCIETY OF MECHANICAL United Engineering Center 345 East 47th Street New PUBLISHED BY ENGINEERS fork
2、, N. Y. 1 O01 7 ,- i. -. r;L . -_- ASME 874-53 78 0757670 0048570 8 9 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 O 1978 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Ri
3、ghts Reserved Printed in U.S.A. ASME 894.53 78 m 0759670 0048591 T m FOREWORD The Metal Cutting Knife Association appointed the “Standards Committee” of the Association to re- view the possibility of standardizing “Squaring Shear Knives.” After reviewing this program the committee notified the membe
4、rs of Technical Committee #17 about this proposed standard and meetings were held on October 8, 1974, April 8, 1975, October 7, 1975, March 9,1976, September 21,1976, December 7, 1976 and March 22, 1977. On May 6, 1977 this Standardization Program was forwarded to the Chairman of the B94 Standards C
5、ommittee, Technical Committee 17 for review and with anticipation of having it adopted as an American National Standard. This Standard was approved as an American National Standard on April 5, 1978. iii 0757670 0048572 L AMERICAN NATIONAL STANDARDS COMMITTEE B94 Standardization of Cutting Tools, Hol
6、ders, Drivers and Bushings OF FICERS Richard K. Buckley, Secretary Harry McLinden, Chairman A. M. Mezey, Vice-chairman AMERICAN GEAR MANUFACTURERS ASSOCIATION, THE P. M. Dean, Jr., Mechanical Technology, Inc., Latham, New York G. L. Scott, Alternate, American Gear Manufacturers Association, Washingt
7、on, D.C. M. E. Merchant, Dr., Cincinnati Milacron, Inc., Cincinnati, Ohio G. M. Monacelli, General Electric Company, Detroit, Michigan C. J. Oxford, Jr., National Twist Drill & Tool Company, Rochester, Michigan AMERICAN SOCIETY OF MECHANICAL ENGINEERS, THE CEMENTED CARBIDE PRODUCERS ASSOCIATION J. A
8、. Woodward, Teledyne Firth Sterling, Pittsburgh, Pennsylvania A. P. Wherry, Alternate, Cemented Carbide Producers Association, Cleveland, Ohio E. J. Czopor, Falcon Tool Company, Detroit, Michigan C. W. Jatho, Alternate, Cutting Tool Manufacturers Association, Birmingham, Alabama W. R. Wacker, Genera
9、l Services Administration, Washington, D.C. Richard Schrade, Clemson Brothers, Inc., Middletown, New York C. M. Stockinger, Alternate, Hack & Band Saw Manufacturers Association of America, Cleveland, Ohio CUTTING TOOL MANUFACTURE8S ASSOCIATION GENERAL SERVICES ADMINISTRATION HACK AND BAND SAW MANUFA
10、CTURERS ASSOCIATION OF AMERICA METAL CUTTING TOOL INSTITUTE W. A. Wagner, CIeveland Twist Drill Company, Cleveland, Ohio R. M. Byrne, Alternate, Metal Cutting Tool Institute, New York, New York To Be Appointed To Be Appointed G. F. Wilson, General Electric Company, Worthington, Ohio E. J. Loeffler,
11、Alternate, National Machine Tool Builders Association, McLean, Virginia C. H. Lang, c/o Society of Carbide Engineers, Bridgeville, Pennsylvania K. A. Lundell, The Producto Machine Company, Jamestown, New York Harry McLinden, Caterpillar Tractor Company, Peoria, Illinois W. N. Moore, The Ford Motor C
12、ompany, Dearbom, Michigan R. A. Agnew, Western Electric Company, Inc., Chicago, Illinois S. P. Rogacki, Alternate, Western Electric Company, Inc., Kearney, New Jersey To be appointed NATIONAL ASSOCIATION OF PUNCH MANUFACTURERS NATIONAL BUREAU OF STANDARDS NATIONAL MACHINE TOOL BUILDERS ASSOCIATION S
13、OCIETY OF CARBIDE ENGINEERS SOCIETY OF MANUFACTURING ENGINEERS TELEPHONE GROUP, THE U.S. DEPARTMENT OF THE AIR FORCE iv I ASME 874.53 78 m 0759670 0048593 3 m I. U.S. DEPARTMENT OF THE ARMY D. L. York, Liaison, General Thomas J. Rodman Laboratories, Rock Island, Illinois U.S. DEPARTMENT OF THE NAVY
14、J. R. Ruff, Liaison, Naval Ship Systems Command, Washington, D.C. U.S. MACHINE SCREW BUREAU Herman Muenchinger, Continental Screw Company, New Bedford, Massachusetts D. E. Chase, Alternate, Continental Screw Company, New Bedford, Massachusetts Harold Cooper, Chrysler Corporation, Detroit, Michigan K
15、enneth Hull, The Ingersoi Milling Machine Company, Rockford, Illinois A. M. Mezey, Richard Brothers Punch Company, Detroit, Michigan Lyle Storrer, Mohawk Tools, Inc., Montpelier, Ohio Anderson Ashburn, American Machinist, New York, New York INDIVIDUAL COMPANIES INDIVIDUAL MEMBERS TECHNICAL COMMITTEE
16、 17 ROTARY SLITTERS AND SHEAR KNIVES C. W. Murray, Chairman, Heppenstail Company, Pittsburgh, Pennsylvania W. W. Burns, Stamco, Inc., New Bremen, Ohio R. R. Ebbing, Detroit Edge Tool Company, Detroit, Michigan F. A. Krauss, The Yoder Company, Cleveland, Ohio S. A. Jacoby, American Shear Knife Compan
17、y, W. Homestead, Pennsylvania D. H. Turk, Production Machinery Corporation, Mentor, Ohio C. E. Pritchard, Republic Steel Corporation, Cleveland, Ohio i. C. Fischer, The Wapakoneta Machine Company, Wapakoneta, Ohio J. B. Randolph, Jr., Ohio Knife Company, Cincinnati, Ohio R. J. White, Cincinnati, Inc
18、., Cincinnati, Ohio R. Novy, Dreis and Krump Manufacturing Company, Chicago, Illinois V - ASIE 899.53 78 0757b70 0048574 5 M CONTENTS Page Scope . 1. Terminolo gy,., 1 Table 1 3 Dimensional Tolerances of Solid Steel Rectangular, Metal Cutting Squaring Shear Knives (Inch). Squaring Shear Knives (Metr
19、ic) Table 2 Dimensional Tolerances of Solid Steel Rectangular, Metal Cutting 5 vi O I l ASME B94-53 78 m 0759670 0048595 7 m ANSI 694.53-1978 AMERICAN NATIONAL STANDARD SOLID STEEL RECTANGULAR METAL CUTTING SQUARING SHEAR KNIVES DIMENSIONAL TOLERANCES 1. SCOPE This document specifies dimensions and
20、tolerances in inches and millimeters for solid steel metal cutting squaring shear knives used for shearing ferrous and non-ferrous metals. The dimensions and tolerances to- gether with the terminology represent within the in- dustry practice for the manufacture, assembly and use of shear knives cove
21、red in this standard. This document contains two separate series of shear knives, a customary unit series and a metric series. Themetric series are hard converted and not interchangeable with the customary product. 2. TERMINOLOGY 2.1 Gap Shear. A sheet or plate shear whose side housings have a throa
22、t or gap allowing the handling of material of a greater width than the width of the ma- chine. 2.2. Plate Shear. A shear to cut flat rolled material %“ (6 mm) and thicker. 2.3 Sheet Shear, A shear to cut flat rolled material less than ?4“ (6 mm) thick. 2.4 Squaring Shear. Shear used to square plates
23、 and sheets. 2.5 Shear Capacity. Capacity of the shear expressed in maximum thickness and length of cut in mild steel. (55,000 PSI Tensile) (380 MPa). 2.6 Solid Steel Shear Knife. Knife composed of one homogeneous grade of tool steel. 2.7 Four Edge Shear Knife. Straight rectangular in section, havin
24、g all four corners (edges) available for cutting. 2.8 Length. The straight line dimension from one end of the cutting edge to the other, and the greatest dimension. 2.9 Width. The second largest external dimension on a shear knife. 2.10 Thickness. The least of the three dimensions used to identify t
25、he size of a shear knife. 2.11 Parallelism. Two surfaces foliowing the same plane at an equal distance. The tolerances on paral- leiism indicate the degree of variation acceptable from the true parallel surfaces. 2.12 Squareness. Two adjacent surfaces being 90 to each other. 2.1 3 Tolerances. Allowa
26、ble deviation from nominal dimensions. 2.14 Bow. Variation from straight plane edgewise or flatwise over full length of knife. (See Table 1 .) 2.15 Flatness. Having an even surface witthout depres- sions or elevations when gauged along the same plane. Tolerance on flatness is the degree of variation
27、 ac- ceptable from the true flat surface. (See Table 1 .) BOLT HOLES 2.16 Angle of Countersink. The included angle formed by the two opposite sides of the countersink. (Meas- ured in degrees.) 2.17 Countersink. Enlarged conical part of a hole to allow for the head of a fastener. 2.18 Keyslot. Slot i
28、n or through hole and countersink to accommodate lug on plow bolt to prevent bolt from turning in knife. 2.19 Tapped Hole. A through-hole with internal threads to accept a thread fastener. AMERICAN NATIONAL STANDARD SOLID STEEL RECTANGULAR METAL CUTTING SQUARING SHEAR KNIVES Cross Section Recommenda
29、tions Width Thickness 2 112 3 314 3 1 4 1 5 1-118 5-1 12 1 -1 12 6-112 1-314 (in Inches) Lengths Recommended knife length should be the shearing length capacity of the shear plus the width of the knife: Example: 4“ x 1“ cross section on a 10 ft. shear would be 120“ plus 4“ or 124“ for knife length.
30、Similarly, a 5-1/2“ x 1-1/2“ cross section for 10 ft. shear would be 120“ plus 5-1/2“ or 125-1/2“ for knife length. Recommended maximum length or one piece knives should be nominal 168“. Longer knives should be sectional. 2 ANSI 894.53-1978 Holes diameter, and diameter of the bolt hole: The followin
31、g table shows knife thickness, bolt Knife Bolt Hole Diameter Thickness Diameter (in inches) (in inches) (in inches) 112 318 7/16 314 112 9/16 1 314 1311 6 1-1 I8 314 1311 6 1-1 I2 1 1-1/16 1314 1 1-1/16 Hole Spacing It is recommended that end holes should be no closer to end of knife than 1/2 the wi
32、dth of the knife. Example: 4“ wide knife, end holes to be 2“from end of knife minimum. Where feasible, holes to be on 8“ centers e O o ASME 874.53 78 m 0757670 0048577 O m AMERICAN NATIONAL STANDARD SOLID STEEL RECTANGULAR METAL CUTTING SQUARING SHEAR KNIVES ANSI 694.53-1978 SQUARENESS PARALLELICM f
33、 DGBEYjqSF HOLE TOLERANCE Table 1 Dimensional Tolerances in Inches of Solid Steel Rectangular Metal Cutting Squaring Shear Knives (Dimensions in Inches) Knife Lengths 12“ II Shorter Over 12“ to Over 36“ to 38“ 96“ Over 96“ to 126“ Over 126“ Length i 0.031 I0.062 f 0.125 + 0.126 - 0.187 + 0.126 - 0.2
34、50 Width + 0.000 - 0.031 + 0.000 - 0.031 + 0.000 - 0.031 + 0.000 - 0.031 + o.Oo0 - 0.031 Thickness + 0.000 - 0.016 + 0.000 - 0.016 + 0.000 - 0.015 + o.Oo0 - 0.015 + 0.000 - 0.015 Permissible Bow Flatwise 0.031 o .o62 0.093 0.125 0.250 PermissiMe Bow Edgewise 0.016 0.015 0.031 0.062 0.062 A Tolerance
35、 Between End Hdes i 0.031 f 0.062 f 0.125 f 0.187 i 0.260 B Tolerance Between Holes f 0.031 i 0.062 f 0.062 i 0.062 i 0.062 Squarenecs of edge to face of knife within 0.006“. Parallelism of Knife Faces: Within 0.003“ with no variation greater than 0.001 within any 12“ length throughout entire length
36、. Parallelism of Knife Edges: Within 0.006“ with no variation greater then 0.001 within any 12“ length throughout entire length. 3 ASME 894.53 78 m 0757670 0048578 2 m AMERICAN NATIONAL STANDARD SOLID STEEL RECTANGULAR METAL CUTTING SQUARING SHEAR KNIVES Cross Section Recommendations Width Thickness
37、 (in Millimeters) 50 12 75 20 75 25 1 O0 25 125 30 140 40 165 45 Lengths Recommended knife length should be the shearing length capacity of the shear plus the width of the knife: Example: 100 mm x 25 mm cross section on a 3048 mm shear would be 3048 mm plus 100 mm or 3150 mm for knife length. Simila
38、rly, a 140 mm x 40 mm cross section for 3048 mm shear wouldbe 3048 mm plus 140 mm or 3190 mm for knife length. Recommended maximum length or one piece knives should be nominal 4250 mm. Longer knives should be sectional. 4 ANSI 894.53-1978 Holes diameter, and diameter of the bolt hole: The following
39、table shows knife thickness, bolt Knife Thickness (in mm) 12 20 25 30 40 45 Bolt Diameter (in mm) 10 12 20 20 25 25 Hole Diameter (in mm) 12 14 22 22 27 27 Hole Spacing It is recommended that end holes should be no closer to end of knife than 1/2 the width of the knife. Example: 100 mm wide knife, e
40、nd holes to be 50 mm from end of knife maximum. Where feasible, holes to be on 200 mm centers. L - . . , . _ . . ASME 894.53 i8 m 0759670 0048597 4 m AMERICAN NATIONAL STANDARD SOLID STEEL RECTANGULAR METAL CUTTING SQUARING SHEAR KNIVES SQUARENESS PARAUELISM ANSI 894.53-1978 FDG&SF HOLE TOLERANCE Ta
41、ble 2 Dimensional Tolerances in Millimeters of Solid Steel Rectangular Metal Cutting Squaring Shear Knives (Dimensions in Millimeters) Knife Lensttir 300 mm & Shorter Over 300 mm to 1000 mm Over 1000 mm to 2600 rnm Over 2500 mm to 3200 .mm Over 3200 mm Length i 1.0 i 2.0 f 3.0 + 3.0 - 5.0 + 3.0 - 6.
42、0 Width +O - 1.0 +O - 1.0 +O - 1.0 +O - 1.0 +O - 1.0 Thickness +O - 05 +O - o5 +O - o5 +O - 0.5 +O - o5 Permissible Bow Flatwise 1 .o 1.5 2.5 3 .O 6 .O Pennissibie Bow Edgewise O .5 O .5 1 .o 15 1 5 A Tolerance Between End Holes B Tolerance Between Holes f 1.0 f 1.5 k 3.0 f 5.0 f 6.0 f 1.0 f 1.5 f 1
43、.5 f 1.5 2 1.5 Squareneu of edge to face of knife within 0.1 mm. ParalleiIsm of Knife Facer: Within 0.07 mm with no variation greater than 0.02 mm within any 300mm length through- out entire length. Paralieiirm of Knife Edger: Within 0.1 mm with no variation greater than 0.02 mm within any 300 mm length through- out entire length.
