1、BRITISH STANDARD BS 122-1:1953 Incorporating Amendment Nos.1,2,3 and 4 Specification for Milling cutters and reamers Part 1: Milling cuttersBS122-1:1953 This British Standard, having been approved by the MechanicalIndustry Standards Committee and endorsed by the Chairman of the Engineering Divisiona
2、l Council, was publishedunder the authority ofthe General Councilon 30June1953 BSI 02-2000 First published July1920 First revision December1931 Second revision April1938 Third revision June1953 ISBN 0 580 34164 X Co-operating organizations The Mechanical Engineering Industry Standards Committee, und
3、er whose supervision this BritishStandard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Admiralty* Institute of Marine Engineers Air Ministry Institute of Petroleum Associated Offices Technical Committee Institution o
4、f Civil Engineers Association of Consulting Engineers Institution of Gas Engineers (Incorporated) Institution of Heating and Ventilating British Chemical Plant Manufacturers Engineers Association Institution of Mechanical Engineers* British Compressed Air Society Institution of Mechanical Engineers
5、British Electrical and Allied Manufacturers (Automobile Division) Association* Institution of Production Engineers* British Electricity Authority and Area Boards Locomotive Manufacturers Association British Engineers Association Machine Tool Trades Association* British Internal Combustion Engine Min
6、istry of Fuel and Power Manufacturers Association Ministry of Labour and National Service British Iron and Steel Federation (Factory Department) British Railways, The Railway Executive Ministry of Supply* Crown Agents for the Colonies Ministry of Transport D.S.I.R.Mechanical Engineering Research Min
7、istry of Works Organization National Physical Laboratory Engineering Equipment Users Association War Office High Commission of India The Government departments and scientific and industrial organizations marked with an asterisk in the above list, and the following scientific and industrial organizat
8、ions were directly represented on the committee entrusted with the preparation of this standard: Gauge and Tool Makers Association North East Coast Institution of Engineers and Institution of Engineers and Shipbuilders in Shipbuilders Scotland Society of Motor Manufacturers and Traders Milling Cutte
9、r and Reamer Trades Association Amendments issued since publication Amd. No. Date of issue Comments July 1955 June 1959 December 1959 August 1960 Indicated by a sideline in the marginBS122-1:1953 BSI 02-2000 i Contents Page Co-operating organizations Inside front cover Foreword iv 1 Scope 1 2 Hand o
10、f cutter 1 3 Light duty and high power cylindrical cutters 4 4 Helical cylindrical cutters 5 5 Side and face cutters 6 6 Staggered tooth side and face cutters 7 7 Slotting cutters 8 8 Metal slitting saws 9 9 Metal slitting saws with side chip clearance. Type A (staggered teeth) 10 10 Metal slitting
11、saws with side chip clearance. Type B (straight teeth) 11 11 Screw slotting cutters 12 12 Single angle cutters 16 13 Double angle cutters 17 14 Equal angle cutters 18 15 Convex cutters 19 16 Concave cutters 21 17 Single corner rounding cutters 22 18 Double corner rounding cutters 24 19 Shell end mil
12、ls 26 20 Hollow mills 30 21 Taper shank end mills 31 22 Taper shank end mills (brown and sharpe taper shank non-preferred) 33 23 Taper shank slot drills (morse taper shank) 34 24 Taper shank slot drills (brown and sharpe taper shanks non-preferred) 35 25 Parallel shank end mills 36 26 Parallel shank
13、 slot drills 38 27 Cutters for woodruff keyseats 39 28 “T” slot cutters (morse taper shank) 41 29 “T” slot cutters (brown and sharpe taper shank non-preferred) 43 Appendix A Dimensions of Morse taper shanks 44 Appendix B Shell end mills and face cutters 48 Figure A 2 Figure B 3 Figure 1 Light duty t
14、ype 4 Figure 2 High power type 4 Figure 3 5 Figure 4 6 Figure 5 7 Figure 6 8 Figure 7 9 Figure 8 10 Figure 9 11 Figure 10 12BS122-1:1953 ii BSI 02-2000 Page Figure 11 15 Figure 12 16 Figure 13 17 Figure 14 17 Figure 15 18 Figure 16 19 Figure 17 20 Figure 18 22 Figure 19 23 Figure 20 25 Figure 21 28
15、Figure 22 30 Figure 23 31 Figure 24 31 Figure 25 32 Figure 26 32 Figure 27 34 Figure 28 35 Figure 29 36 Figure 30 37 Figure 31 38 Figure 32 39 Figure 33 41 Figure 34 41 Figure 35 42 Figure 36 43 Figure 1 Nomenclature for self-holding tapers 44 Figure 2 Tanged type shank 45 Figure 3 Tapped end shank
16、47 Table 1 Diameters of arbors and standard bores 1 Table 2 Keys for arbors 2 Table 3 Keyways 3 Table 4 Light duty and high power cylindrical cutters 5 Table 5 Helical cylindrical cutters 6 Table 6 Side and face cutters 7 Table 7 Staggered tooth side and face cutters 8 Table 8 Slotting cutters 9 Tab
17、le 9 Metal slitting saws 10 Table 10 Metal slitting saws with side chip clearance. Type A (staggered teeth) 11 Table 11 Metal slitting saws with side chip clearance. Type B (straight teeth) 12 Table 12 Screw slotting cutters 13 Table 13 Single angle cutters 16 Table 14 Double angle cutters 18 Table
18、15 Equal angle cutters 19 Table 16 Convex cutters 20 Table 17 Concave cutters 21 Table 18 Single corner rounding cutters 23BS122-1:1953 BSI 02-2000 iii Page Table 19 Double corner rounding cutters 24 Table 20 Shell end mills 27 Table 21 Arbors for shell end mills 28 Table 22 Hollow mills 31 Table 23
19、 Taper shank end mills (Morse taper shank) 32 Table 24 Taper shank end mills (Brown and Sharpe taper shank) 33 Table 25 Taper shank slot drills (Morse taper shank) 34 Table 26 Taper shank slot drills (Brown and Sharpe taper shank) 36 Table 27 Parallel shank end mills 37 Table 28 Parallel shank slot
20、drills 39 Table 29 Cutters for Woodruff keyseats 40 Table 30 “T” slot cutters (Morse taper shank) 42 Table 31 “T” slot cutters (Brown and Sharpe taper shank) 43 Table 1 Basic dimensions for self-holding tapers 44 Table 2 General dimensions for tanged type self-holding 45 Table 3 Tolerances on dimens
21、ions of shank 46 Table 4 General dimensions for tapped end type self-holding tapers 46 Table 5 Tolerances on dimensions of shank 47 Table 18 (1938) 48 Table 19 (1938) 49 Table 20 (1938) 50 Table 21 (1938) 50BS122-1:1953 iv BSI 02-2000 Foreword This standard makes reference to the following BritishSt
22、andards: BS 328, Twist drills and combined drills and countersinks (centre drills). BS 1660-1, Self-holding tapers. This BritishStandard has been prepared under the authority of the Mechanical Engineering Industry Standards Committee. The standard for milling cutters and reamers was first published
23、in1920 and subsequent editions were issued in1931 and1938. The present revision is in two parts, Part1 relating to milling cutters and Part2 (published separately) relating to reamers, countersinks and counterbores. The scope of Part1 of this standard corresponds to that of the equivalent section on
24、 milling cutters in the1938 edition, but gear forming tools have been omitted since they will be dealt with in a separate standard now in course of preparation. Definitions for the various types of cutter, and requirements and recommendations on some matters of detail such as side clearance and prov
25、ision of a radius or flat have been included. It will be appreciated, however, that there are certain constructional features, e.g.limitation of shape of teeth in relation to size of cutter, which it is not practicable to standardize, and these are left to the option of the manufacturer. Complete di
26、mensions of standard arbors for shell end mills are also given and information regarding Morse tapers is included in an appendix. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compl
27、iance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi toiv, pages1to50 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporat
28、ed. This will be indicated in the amendment table on the inside front cover.BS122-1:1953 BSI 02-2000 1 1 Scope This BritishStandard relates to the following types of cutter: Cylindrical, side and face, slotting, screw slotting, single, double and equal angle cutters; T slot, convex, single and doubl
29、e corner rounding cutters; metal slitting saws; taper and parallel shank slot drills; shell end mills; taper and parallel shank end mills; hollow mills. General requirements and dimensions and tolerances are specified for the various types of cutters listed above. Diameters of arbors and standard bo
30、res and the dimensions of keys for arbors and the corresponding keyways are given, and the complete dimensions of standard arbors for shell end mills are also included. 2 Hand of cutter Reference to hand of cutter is made in a number of tables, and for the purposes of this BritishStandard the follow
31、ing definitions shall apply: Right hand cutting. The anti-clockwise rotation of a cutter when viewed facing the spindle nose. Left hand cutting. The clockwise rotation of a cutter when viewed facing the spindle nose. Table 1 Diameters of arbors and standard bores 1 2 3 Class of cutter Diameter of ar
32、bor Diameter of bore Tolerance 0.0005 in. 0.001 in. Tolerance +0.00075 in. +0.00025 in. Screw slotting cutters and shell end mills in. “ in. “ Screw slotting cutters only * * Screw slotting cutters and shell end mills # # Cylindrical, slotting, side and face, angle and screw slotting cutters; metal
33、slitting saws; shell end mills; convex; concave; single and double corner rounding cutters 1 1 Cylindrical, slotting, side and face and angle cutters; shell end mills; convex and concave cutters. 1! 1! Cylindrical, slotting; side and face cutters and shell end mills 1“ 1“ Cylindrical cutters; insert
34、ed tooth side and face cutters and shell endmills 2 2BS122-1:1953 2 BSI 02-2000 Table 2 Keys for arbors NOTEDimensions of keys relating to a full range of arbors have been included in this table for reference purposes; the standard bore sizes for the various types of cutter are those given in the in
35、dividual tables. Figure A 1 2 3 4 5 Diameter of arbor A Nominal size of key Width of key B Diameter plus height of key C Corner radii of key R Tolerance +0.000 in. 0.005 in. Tolerance +0.000in. 0.005 in. in. in. in. in. in. 3 / 8 3 / 32 0.094 0.422 0.020 1 / 2 3 / 32 0.094 0.547 0.020 5 / 8 1 / 8 0.
36、125 0.688 1 / 32 3 / 4 1 / 8 0.125 0.812 1 / 32 7 / 8 1 / 8 0.125 0.938 1 / 32 1 1 / 4 0.250 1.094 3 / 64 1 1 / 4 5 / 16 0.312 1.375 1 / 16 1 1 / 2 3 / 8 0.375 1.656 1 / 16 1 3 / 4 7 / 16 0.438 1.938 1 / 16 2 1 / 2 0.500 2.188 1 / 16 2 1 / 2 5 / 8 0.625 2.718 1 / 16 3 3 / 4 0.750 3.250 3 / 32 3 1 /
37、2 7 / 8 0.875 3.875 3 / 32 4 1 1.000 4.375 3 / 32 4 1 / 2 1 1 / 8 1.125 4.938 1 / 8 5 1 1 / 4 1.250 5.500 1 / 8BS122-1:1953 BSI 02-2000 3 Table 3 Keyways NOTEDimensions of keyways relating to a full range of bore sizes have been included in this table for reference purposes; the standard bore sizes
38、for the various types of cutter are those given in the individual tables. Figure B 1 2 3 4 Diameter of bore A Width of keyway B Diameter plus height of keyway C Corner radii of keyway R Tolerance +0.007 in. +0.002 in. Tolerance +0.015 in. 0.000in. in. in. in. in. 3 / 8 0.094 0.432 0.020 1 / 2 0.094
39、0.557 0.020 5 / 8 0.125 0.698 1 / 32 3 / 4 0.125 0.822 1 / 32 7 / 8 0.125 0.948 1 / 32 1 0.250 1.104 3 / 64 1 1 / 4 0.312 1.385 1 / 16 1 1 / 2 0.375 1.666 1 / 16 1 3 / 4 0.438 1.948 1 / 16 2 0.500 2.198 1 / 16 2 1 / 2 0.625 2.733 1 / 16 3 0.750 3.265 3 / 32 3 1 / 2 0.875 3.890 3 / 32 4 1.000 4.390 3
40、 / 32 4 1 / 2 1.125 4.953 1 / 8 5 1.250 5.515 1 / 8BS122-1:1953 4 BSI 02-2000 3 Light duty and high power cylindrical cutters a) Definition. A cutter primarily used for surfacing, with teeth on the periphery only; light duty or high power type cutters can be supplied. (See Figure 1 and Figure 2 abov
41、e.) b) Keyways. The dimensions of the keyways shall be as given in Table 3. c) Helix. The purchaser should state in his enquiry and order whether a left-hand or right-hand helix is required. Light duty and high power cylindrical cutters Figure 1 Light duty type Figure 2 High power typeBS122-1:1953 B
42、SI 02-2000 5 Table 4 Light duty and high power cylindrical cutters 4 Helical cylindrical cutters a) Definition. A cutter primarily used for heavy surfacing cuts, having a large angle of helix relative to the axis of the cutter. It has a small number of teeth on the periphery only. (See Figure 3 abov
43、e.) b) Keyways. The dimensions of the keyways shall be as given in Table 3. c) Helix. The purchaser should state in his enquiry and order whether a left-hand or right-hand helix is required. 1 2 3 Diameter of cutter Diameter of bore Lengths Tolerance +0.045 in. 0.000 in. Tolerance +0.00075 in. +0.00
44、025 in. Tolerance Up to and including 6 in. Above 6 in. +0.03in. 0.00in. +0.06in. 0.00in. in. in. in. 2“ 3 3“ 4 4“ 1 1! 1! 1! or1“ a 1“ or2 a 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4 4, 4, 4, 4, 5, 5, 5, 5, 6 6, 6, 6, 7 7, 7, 8 8, 9 a The larger diameter of bore is recommended. Helical cylindrical cutt
45、ers Figure 3 BS122-1:1953 6 BSI 02-2000 Table 5 Helical cylindrical cutters 5 Side and face cutters a) Definition. A cutter with teeth on the periphery and both sides; high power or light duty type cutters can be supplied. (See Figure 4 above.) b) Keyways. The dimensions of the keyways shall be as g
46、iven in Table 3. c) Side clearance. Side and face cutters may have each side ground to provide ! side clearance and the clearance may be amplified by recessing where the width and diameter of the cutter permit. 1 2 3 Diameter of cutter Diameter of bore Lengths Tolerance +0.045 in. 0.000 in. Toleranc
47、e +0.00075 in. +0.000 25 in. Tolerance +0.03 in. 0.00 in. in. in. in. 3 4 5 1 1 / 41 1 / 2 1 1 / 2or2 a 2, 2, 2, 3, 3, 3, 4, 4, 4, 6, 6, 6, a The larger diameter of bore is recommended. Side and face cutters Figure 4 BS122-1:1953 BSI 02-2000 7 Table 6 Side and face cutters 6 Staggered tooth side and
48、 face cutters a) Definition. A cutter with teeth on the periphery and both sides. The teeth are alternately right-hand and left-hand angled and have a positive rake. Alternate side teeth are removed. (See Figure 5 above.) b) Keyways. The dimensions of the keyways shall be as given in Table 3. 1 2 3
49、Diameter of cutter Diameter of bore Width of cutting edges and boss Tolerance +0.045 in. 0.000 in. Tolerance +0.00075 in. +0.000 25 in. Tolerance +0.005 in. 0.000 in. in. in. in. 2 1 / 2 1 1 / 4 5 / 16 3 / 8 1 / 2 3 1 1 / 4 5 / 16 3 / 8 1 / 2 5 / 8 3 1 / 2 1 1 / 4 5 / 16 3 / 8 7 / 16 1 / 2 5 / 8 3 / 4 4 1 or1 1 / 4 a 1 / 4 3 / 8 1 / 2 5 / 8 3 / 4 7 / 8 1 5 1 1 / 4 1 / 2 5 / 8 3 / 4 7 / 8 1 6 1 1 / 4or1 1 / 2 a 1 / 2 5 / 8 3
