《ISO-1721-1974.pdf》由会员分享，可在线阅读，更多相关《ISO-1721-1974.pdf（8页珍藏版）》请在三一文库上搜索。
1、INTERNATIONAL STANDARD 1721 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION .MEXAYHAPOAHAII OPTAHM3ALW II0 CTAH,UAPTI13AI these documents are now in the process of being transformed into International Standards. As part of this process, Technical Committee ISO/TC 82 has reviewed IS0 Recommendation R
2、1721 and found it suitable for transformation. International Standard IS0 1721 therefore replaces IS0 Recommendation R 1721-1970. IS0 Recommendation R 1721 was approved by the Member Bodies of the following countries : Austria Belgium Canada Czechoslovakia Egypt, Arab Rep. of France Germany Greece H
3、ungary India Iran Israel Italy Japan Netherlands New Zealand Poland South Africa, Rep. of Spain Sweden Thailand Turkey United Kingdom Yugoslavia No Member Body expressed disapproval of the Recommendation. The Member Body of the following country disapproved the transformation of ISO/R 1721 into an I
4、nternational Standard : Canada 0 International Organization for Standardization, 1974 l Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 02:25:55 MDTNo repr
5、oduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 1721-1974 (E) Rock drilling - Extension drill-steel equipment for percussive long-hole drilling - Reverse-buttress-threaded equipments 1 l/16 and 1 114 in (27 and 32 mm) 1 SCOPE AND FIELD OF APPLICATION This I
6、nternational Standard specifies the basic dimensions for reverse-buttress-threaded extension drill-steel equipment for percussive long-hole drilling, of the following nominal sizes : 1 1 /I 6 in light (27 mm) 1 1/4 in light (32 mm) 2 REFERENCE IS0 723, Rock drilling - Forged collared shanks and chuc
7、k bushings for hollow hexagonal drill-steels. 3 LIST OF COMPONENTS Equipment 1 l/16 in light 1 1/4 in light (27 mm) (32 mm) Thread diameter 1 l/16 in 1 If4 in Size of drill rod in bar 7/8 in hexagonal 1 in hexagonal Form (22 mm) (25 mm) Shank adapters, hexagon type See clause 4 Shank adapters, lug-s
8、hank ww See clause 5 Lengths of extension rods clause 6) Coupling sleeves Bit diameters (four-wing bits) (clause 8) Reverse-buttress threads Hollow hexagonal bars for extension rods mm ft mm ft 915 3 915 3 1 220 4 1 220 4 - 1 525 5 1.830 6 1830 6 2 435 8 2 435 8 - - 3050 10 See clause 7 mm in mm in
9、41 1 5/8 - - - - 45 1 3/4 48 1 718 51 2 51 2 -. - 57 2 l/4 64 2 II2 See clause 9 See clause 10 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 02:25:55 MDTNo reproduction or netw
10、orking permitted without license from IHS -,-,- 4 SHANK ADAPTERS FOR CENTRAL FLUSHING - HEXAGON TYPE /Forged collar, see IS0 723 Dimensions in millimetres Hexagonal drill-steel Thread 6 L Ll L4 L5 Equipment (see clause 10) diameter Nominal G Basic Basic Basic size nominal size Tolerance size Toleran
11、ce _+I size Tolerance 1 l/16 in light 22 1 1/16in 22.10 -:,2 255 i 25 108 85.7 7,14 i: 0,5 1 t/4 in light 25 1 l/4 in 25.27 0 - 0,2 255 108 i 25 159 92,l 6,35 2 0.5 Dimensions in inches Hexagonal drill-steel Thread 6 L Ll L4 L5 Equipment (see clause 10) diameter Nominal G Basic Tolerance Basic size
12、nominal size size Tolerance i 0.39 Basic size Tolerance 1 l/16 in light 718 1 1/16in 0.870 i.008 10 +l 4 l/4 3.375 0.281 f 0.020 - I l/4 in light 1 1 l/4 in 0.955 0 10 +_l 4 l/4 - 0.008 6 114 3.625 0.250 +- 0.020 Copyright International Organization for Standardization Provided by IHS under license
13、with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 02:25:55 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 1721-1974(E) 5 SHANK ADAPTERS FOR CENTRAL FLUSHING - LUG-SHANK TYPE Section A-A Dimensions in millimetres (Bracketed values in inc
14、hes) N -2 06 g I- I t, 1 od R I - lo 380 * 1 (14.96 +o.o39) F; F! C i 1) Refers only to the length for which diameter 32,0 _ i 4 mm (1.26 _ i o,6 in) is valid. I Thread I B Equipment diameter G nominal Basic size Tolerance 1 1116 in light 1 l/16 in 22,lO 0 - 0,2 1 l/4 in light 1 l/4 in 25,27 0 -0,2
15、L4 L-F- +l Basic I I size Tolerance R max. 4 10 1 82,5 1 4 10 I I 82,5 Dimensions in millimetres Dimensions in inches Equipment Thread B L4 L5 R Flushing tube diameter G nominal Basic Outside Entry size Tolerance f. 0.039 Basic Tolerance max. size diameter length i 0.004 max. 1 l/16 in light 1 l/16
16、in 0.870 i.008 3.375 0.281 i 0.020 0.157 25164 3 114 - 1 l/4 in light 1 II4 in 0.995 0 0.008 3.625 0.250 i 0.020 0.157 25164 3 114 - 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/
17、2007 02:25:55 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 1721-1974 (E) 6 EXTENSION RODS Section A-A Dimensions in millimetres B L4* tl L5 Hexagonal drill rod (see clause 10) N nominal L Basic size Tolerance ft in 3 4 6 t1 8 3 4 5 6 ?l 8 10 Thread diameter G nominal
18、 Equipment 1 1 /16 in light 22 1 l/16 in Basic size Tolerance Basic size Tolerance 22,lO -:,2 85.7 1 l/4 in light 25 1 l/4 in 25.27 0 - 0,2 92,l 6,35 +_ 0,5 Dimensions in inches Hexagonal drill rod (see clause 10) N nominal y-j- Tolerance L4* f 0.039 L5 Thread diameter G nominal Equipment Basic size
19、 Tolerance 0 - 0.008 1 l/16 in light 718 1 l/16 in 0.870 3.375 0.281 ?: 0.020 1 l/4 in light 1 1 l/4 in 3.625 0.250 + 0.020 I L l No thread undercut is required in this instance. 4 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical
20、 Standards 1/9972545001 Not for Resale, 04/27/2007 02:25:55 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 1721-1974 (E) 7 COUPLING SLEEVES rRound or chamfered Dimensions in millimetres c Thread B L6 Equipment D diameter max. G Basic Tolerance L-: Basic nominal size si
21、ze Tolerance 1 l/16 in light 36,8 1 l/16 in 22,23 + 0,5 0 127 57,38 t l,o 0 1 I/4 in light 45,7 I 114 in 2553 t 0,5 + I,0 0 152 70,87 0 Dimensions in inches Equipment Thread B D diameter max. G Basic L-00.039 L6 Basic nominal size Tolerance size Tolerance 1 l/16 in light 1.45 1 l/16 in 0.875 + 0.020
22、 5 ()() 2.259 t 0.039 0 0 1 1/4 in light 1.80 1 l/4 in 1.005 t 0.020 t 0.039 0 6.00 2.790 0 8 FOUR-WING BITS - CROSS-DESIGN Round or chamfered - K max = D- 5 mm (0.197 in) Cross design Nominal diameter mm in f 41 1 5/8 45 1 314 51 2 48 1718 51 4 57 2 l/4 64 2112 5 Copyright International Organizatio
23、n for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 02:25:55 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 1721-1974 (E) 9 LEFT-HAND REVERSE-BUTTRESS THREADS I lb I I ! Striking face Di
24、mensions in millimetres Nominal thread diameter Internal threads External threads Pitch D +313 a R a r P t 0.10 0 0 + 0,4 od 3 + 112” t 0,4 0 - 0.08 - 0.08 f l/2” 0 1 l/16 in 27,13 23.95 22” I,98 26.85 23,72 22” 1.98 7,26 1 l/4 in 32,69 28.22 25” 3.28 31,65 27.89 25” 2,21 10.16 Dimensions in inches
25、Nominal thread diameter 1 l/16 in 1 114 in Internal threads External threads Pitch D Dl 01 R d dl (Y t 0.004 t 0.005 l/2” + 0.016 0 i.003 +_ l/2” + 0:016 P 0 0 k 0 - 0.003 - 0 1.068 0.943 22” 0.078 1.057 0.934 22” 0.078 0.286 I.287 1.111 25 0.129 1.246 1.098 25” 0.087 0.400 10 HOLLOW HEXAGONAL DRILL
26、-STEEL IN BAR FORM FOR EXTENSION RODS Dimensions in millimetres 1 I N I I 1 1 Eccentricitv : max. 22 22,4 t 0.1 24.8 6.1 2 0,75 - 0,4 I 25 25,6 0 0,6 28.5 8.4 2 0.75 - Dimensions in inches Hexagonal drill-steel Basic size 7/a 1 0.882 1.008 i O N Tolerance + 0.004 - 0.016 - 0 1 1 0.024 Eccentricity :
27、 Distance between the centre of the hexagon and the centre of the hole max. ,976 0.030 0.030 NOTE - These tables are identical with those in IS0 1719, Rock drilling - Extension drill-steel equipment for percussive long-hole drilling - Rope-threaded equipments 7/8 to 1 l/4 in (22 to 32 mm). 6 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 02:25:55 MDTNo reproduction or networking permitted without license from IHS -,-,-