1、BRITISH STANDARD BS 8416:2002 Specification for Hole-saws ICS 25.080.60 BS 8416:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee and comes int
2、o effect on 28 August 2002 BSI 28 August 2002 First published as BS 8416 August 2002 The following BSI references relate to the work on this Standard: Committee reference MTE/20 Draft for comment 02/700425 DC ISBN 0 580 40166 9 Committees responsible for this British Standard The preparation of this
3、 British Standard was entrusted to Technical Committee MTE/20, Power Driven Saws, upon which the following bodies were represented. British Hacksaw and Bandsaw Manufacturers Association Gauge and Tool Makers Association Amendments issued since publication Amd. No. Date CommentsBS 8416:2002 BSI 28 Au
4、gust 2002 i Contents Page Foreword ii 1S c o p e 1 2 Normative references 1 3T e r m s a n d d e f i n i t i o n s 1 4 Hole-saw types 2 5D e s i g n 3 6 Hole-saw arbors 9 7 Hole-saw accessories 12 8 Marking 17 9 Instructions for use 17 Figure 1 Pitch and depth 2 Figure 2 Toothed hole-saw (typical co
5、nstruction) 2 Figure 3 Hole-saw type I 5 Figure 4 Hole-saw type II 6 Figure 5 Hole-saw type III 7 Figure 6 Hole-saw type IV 8 Figure 7 Hole-saw arbor type I 10 Figure 8 Hole-saw arbor type II 10 Figure 9 Hole-saw arbor type III 11 Figure 10 Pilot drill for use with arbor type I 12 Figure 11 Pilot dr
6、ill for use with arbor type I (tipped) 13 Figure 12 Pilot drill for use with arbor type II and III 13 Figure 13 Pilot drill for use with arbor type II and III (tipped) 14 Figure 14 Arbor extension 15 Figure 15 Morse taper adapter 16 Table 1 Standard hole-saw sizes 4 Table 2 Tolerances for hole-saw c
7、oncentricity 9 Table 3 Hole-saw arbor dimensions 9BS 8416:2002 ii BSI 28 August 2002 Foreword This British Standard has been prepared under the direction of BSI Technical committee MTE/20, Power Driven Saws. The committee is not aware of any international work on this subject and no existing standar
8、ds are replaced. This British Standard does not purport to include all the necessary provisions required for a contract. Users of British Standards are responsible for their correct application. This British Standard has been prepared, under the direction of BSI Technical committee MTE/20 Power Driv
9、en Saws. The committee is not aware of any international work on this subject and no existing standards are replaced. Compliance 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, pages 1 t
10、o 17 and a back cover. The BSi copyright notice displayed in this document indicates when the document was last issued.BS 8416:2002 BSI 28 August 2002 1 1 Scope This British Standard specifies design, dimensions and tolerances for hole-saws up to 152 mm diameter. The following types of hole-saws are
11、 specified: a) toothed hole-saws; b) tipped-toothed hole-saws; c) abrasive grit-edged hole-saws. This British Standard also includes dimensions of hole-saw driving arbors and other accessories. 2 Normative references The following referenced documents are indispensable for the application of this do
12、cument. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. BS 1580, Specification for unified screw threads. BS 1660-1, Machine tapers Specification for shanks and sockets with self-holding t
13、apers (Morse and metric 5 %). BS EN ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method. BS EN ISO 6508-1, Metallic materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H,K, N, T). BS 328-1, Drills and reamers Specification for twist drills. 3 Terms
14、and definitions For the purposes of this British Standard the following definitions apply. 3.1 hole-saw cylindrical tool used to cut a circular hole through sheet material NOTE Hole-saws are not intended to cut blind holes. 3.2 cutting edge toothed or gritted edge of the hole-saw 3.3 body part of th
15、e hole-saw between the cutting edge and the cap 3.4 cap closure at the non-cutting end of the body 3.5 teeth serrations formed across the thickness of the hole-saw to provide cutting edges NOTE Teeth are “set” to cut wider than the body thickness. 3.6 body thickness thickness of the material used to
16、 form the body 3.7 tooth pitch distance between the apices of adjacent teeth (in millimetres) NOTE See Figure 1.BS 8416:2002 2 BSI 28 August 2002 3.8 tooth depth distance from the point of a tooth to the bottom of the root radius NOTE See Figure 1. 3.9 Cutting plane plane perpendicular to the axis o
17、f the hole-saw at the point on the cutting edge furthest from the cap 4 Hole-saw types 4.1 Toothed hole-saws Toothed hole-saws shall have teeth formed in a material suitable for their intended use. NOTE Toothed hole-saws typically have a composite “bi-metal” construction consisting of an alloy steel
18、 main body with a narrow high-speed steel edging strip, in which the teeth are formed (see Figure 2). Figure 1 Pitch and depth Figure 2 Toothed hole-saw (typical construction)BS 8416:2002 BSI 28 August 2002 3 4.2 Tipped toothed hole-saws Tipped toothed hole-saws shall have permanently bonded teeth f
19、ormed in a material suitable for their intended use. NOTE Tipped hole-saws are typically constructed with tungsten carbide teeth permanently bonded to an alloy steel body. 4.3 Abrasive grit-edged hole-saws Abrasive grit-edged hole-saws shall have abrasive grit particles, suitable for their intended
20、use, permanently bonded to the cutting edge, in addition to or instead of teeth. 5 Design 5.1 Construction The hole-saw body shall be made from alloy steel. The cap shall be permanently bonded (e.g. fusion welded) to the body. Holes or slots shall be provided in the body to facilitate core removal.
21、5.2 Direction of rotation The hole-saw shall be designed to cut when rotated in a clockwise direction viewed from the cap end. 5.3 Heat treatment The hole-saw body shall be hardened and tempered to produce a minimum hardness of 40 HRc /380 Hv in accordance with BS EN ISO 6508-1 or BS EN ISO 6507-1 a
22、s appropriate. Toothed hole-saws shall be hardened and tempered to produce a minimum hardness of 63 HRc /770 Hv in the teeth. 5.4 Finish Hole-saws shall have a protective coating to prevent corrosion. 5.5 Screw threads Screw threads shall conform to BS 1580. 5.6 Morse tapers Morse tapers shall confo
23、rm to BS 1660-1. 5.7 Standard diameters Hole-saw diameters shall conform to the standard sizes specified in Table 1.BS 8416:2002 4 BSI 28 August 2002 Table 1 Standard hole-saw sizes 5.8 Depth The cutting depth of the hole-saw shall be as follows. a) Shallow depth for sheet materials up to 13 mm thic
24、k. b) Standard depth for sheet materials up to 30 mm thick. c) Extra depth for sheet materials over 30 mm thick. For extra-depth hole-saws the maximum cutting-depth shall be specified by the manufacturer. 5.9 Driving arbors interfaces 5.9.1 General The hole-saw shall have an interface for a driving
25、arbor conforming to Table 1. Nominal diameter Nominal diameter Hole-saw interface type Arbor type Nominal diameter Nominal diameter Hole-saw interface type Arbor type mm inches mm inches 14 I I or II 57 2 II III 16 I I or II 59 2 II III 17 I I or II 60 2 II III 19 I I or II 64 2 II III 20 I I or II
26、65 2 II III 21 I I or II 67 2 II III 22 I I or II 68 2 II III 24 I I or II 70 2 II III 25 1 I I or II 73 2 II III 27 1 I I or II 76 3 II or III or IV III 29 1 I I or II 79 3 II or III or IV III 30 1 I I or II 83 3 II or III or IV III 32 1 II III 86 3 II or III or IV III 33 1 II III 89 3 II or III or
27、 IV III 35 1 II III 92 3 II or III or IV III 37 1 II III 95 3 II or III or IV III 38 1 II III 98 3 II or III or IV III 40 1 II III 102 4 II or III or IV III 41 1 II III 105 4 II or III or IV III 43 1 II III 108 4 II or III or IV III 44 1 II III 111 4 II or III or IV III 46 1 II III 114 4 II or III o
28、r IV III 48 1 II III 121 4 II or III or IV III 51 2 II III 127 5 II or III or IV III 52 2 II III 133 5 II or III or IV III 54 2 II III 140 5 II or III or IV III 56 2 II III 152 6 II or III or IV III 25 32 BS 8416:2002 BSI 28 August 2002 5 5.9.2 Interface type I Hole-saw interface type I (14 mm to 30
29、 mm diameter) shall conform to Figure 3. The cap shall be hexagonal or cylindrical. 5.9.3 Interface type II Hole-saw interface type II (32 mm to 152 mm diameter) shall conform to Figure 4. The hole-saw cap shall have a minimum of two drive holes 6.9 mm 0.1 mm diameter on 25.4 mm 0.1 mm pcd., of whic
30、h two shall be diametrically opposite. 5.9.4 Interface type III Hole-saw interface type III (76 mm to 152 mm diameter) shall conform to Figure 5. The cap shall have a minimum of two drive holes 6.9 mm 0.1 mm diameter on 25.4 mm 0.1 mm pcd of which two shall be diametrically opposite. There shall als
31、o be a minimum of two drive holes 8.4 mm 0.1 mm diameter on 50.8 mm 0.1 mm pcd of which two shall be diametrically opposite. 5.9.5 Interface type IV Hole-saw interface type IV (76 mm to 152 mm diameters) shall conform to Figure 6. The cap shall have a minimum of two drive holes 6.9 mm 0.1 mm diamete
32、r on 25.4 mm 0.1 mm pcd. of which two shall be diametrically opposite. There shall also be three drive holes 8.4 mm 0.1 mm diameter equally spaced on a 85.7 mm 0.1 mm pcd. Figure 3 Hole-saw type IBS 8416:2002 6 BSI 28 August 2002 Figure 4 Hole-saw type IIBS 8416:2002 BSI 28 August 2002 7 Figure 5 Ho
33、le-saw type IIIBS 8416:2002 8 BSI 28 August 2002 Figure 6 Hole-saw type IVBS 8416:2002 BSI 28 August 2002 9 5.10 Concentricity When mounted on the appropriate hole-saw arbor, the concentricity of the hole-saw cutting edge shall conform to the tolerances specified in Table 2 when rotated about the ax
34、is of the arbor. Table 2 Tolerances for hole-saw concentricity 5.11 Cutting edge variation When mounted on the appropriate hole-saw arbor, the axial deviation of the cutting edge or any tooth, from the cutting plane shall not exceed 0.25 mm when rotated about the axis of the arbor. 6 Hole-saw arbors
35、 6.1 General Hole-saw arbors and arbor extensions shall be manufactured from steel and shall conform to the requirements specified in Table 3. Table 3 Hole-saw arbor dimensions 6.2 Hole-saw arbor type I Hole-saw arbors type I, when assembled with the appropriate pilot drill (see Clause 7) shall conf
36、orm to Table 3 and Figure 7. 6.3 Hole-saw arbor type II Hole-saw arbors type II shall conform to Table 3 and Figure 8. 6.4 Hole-saw arbor type III Hole-saw arbors type III shall conform to the requirements of Table 3 and Figure 9. Hole-saw diameter Concentricity mm mm 50 0.75 51 to 100 1.00 101 to 1
37、52 1.50 Arbor Mounting thread A Typical body diameter B Shank size C Diameter or AF Typical shank length D Cross-thread designation E inches mm mm mm inches Type I 19 6.35 () 20 (20 UNF-2B) (24 UNF-2B) Type II 19 9 0.1 25 (20 UNF-2B) or 11.0 0.1 (24 UNF-2B) Type III 36 9 0.1 25 (18 UNF-2B) or 11.0 0
38、.1 (24 UNF-2B) Arbor extension 19 9 0.1 300 or 11.0 0.1 (24 UNF-2B) Morse taper No. 2 or No. 3 Adapter morse taper (18 UNC-2B)BS 8416:2002 10 BSI 28 August 2002 Figure 7 Hole-saw arbor type I Figure 8 Hole-saw arbor type IIBS 8416:2002 BSI 28 August 2002 11 Figure 9 Hole-saw arbor type IIIBS 8416:20
39、02 12 BSI 28 August 2002 7 Hole-saw accessories 7.1 Pilot drills Pilot drills shall conform to BS 328-1. Pilot drills shall be 6.35 mm ( ) diameter and shall include a means of fixing to the arbor. When assembled to the drive arbor, the overall length and position of the drive flat or notch shall be
40、 such that the pilot drill protrudes beyond the cutting edge of the hole-saw by 10 mm minimum. The dimension D shall conform to Table 3. Pilot drills for use with toothed hole-saws shall be manufactured from high-speed steel, fully heat-treated in the tip to a minimum hardness of 63 HRc/770 Hv, and
41、shall conform to Figure 10 or Figure 12. Pilot drills for use with tipped toothed and abrasive grit-edged hole-saws may be manufactured from solid tungsten carbide or steel with a tungsten carbide tip and shall conform to Figure 11 or Figure 13. Figure 10 Pilot drill for use with arbor type IBS 8416
42、:2002 BSI 28 August 2002 13 Figure 11 Pilot drill for use with arbor type I (tipped) Figure 12 Pilot drill for use with arbor type II and IIIBS 8416:2002 14 BSI 28 August 2002 7.2 Arbor extension Arbor extensions shall be manufactured from steel and shall conform to Figure 14 and Table 3. 7.3 Morse
43、taper adapter Morse taper adapters shall be manufactured from steel and shall conform to Figure 15 and Table 3. Figure 13 Pilot drill for use with arbor type II and III (tipped)BS 8416:2002 BSI 28 August 2002 15 Figure 14 Arbor extensionBS 8416:2002 16 BSI 28 August 2002 Figure 15 Morse taper adapte
44、rBS 8416:2002 BSI 28 August 2002 17 8 Marking Each hole-saw, hole-saw arbor, pilot drill or hole-saw extension and the package in which it is supplied shall be clearly and permanently marked with the following information: a) the number and date of this British Standard, i.e. BS 8416:2002 1) ; b) th
45、e nominal diameter; c) the maximum depth of cut of the hole-saw or the intended use of the hole-saw arbor, pilot drill or hole-saw extension; d) manufacturers name or trade mark; e) intended use (materials to be cut); f) any restrictions on use (e.g. maximum speed). Where space is limited (i.e. on s
46、mall diameter hole-saws) at least item b should be marked. 9 Instructions for use Each hole-saw, hole-saw arbor, pilot drill or hole-saw extension and the package in which it is supplied shall include full instructions for use. These shall include the following: a) instructions for assembly; b) othe
47、r equipment required; c) advice on the use of the equipment. The instructions shall also include advice, on safety precautions to be taken by the user. 1)Marking BS 8416:2002 on or in relation to a product represents the manufacturers declaration of conformity, i.e. a claim by or on behalf of the ma
48、nufacturer that the product meets the requirements of the standard. The accuracy of the claim is solely the claimants responsibility. Such a declaration is not to be confused with third-party certification of conformity.BS 8416:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Ch
