1、1 主题内事中华人民共和国国家标准机床夹具慧件及部件锥度芯轴The阴阳andun胁。Ifjigs and fixtures Ta阳翩翩ndred本标准规定了适用于工件直径为8100mm的锥度芯输。2 引用掘准GB 145 中心孔GB 1298 碳萦工具钢技术条件GB/2259 机床央具零件及部件技术要求3 尺寸尺寸如下朋及表所示。适用工件孔径8,.50mm GB 145 3 国靠技术监督局1991-。中30批准GB/T 12875 91 真余V 1992-01-01实施GB/T 1 2 8 7 5 - 9 1 适用工件孔径52.100mm mm 公称直径K 文号41 42 L t (适用工件孔
2、径)No 8.002 1.982 8 1: 3000 日8.022 8.002 95 80 10 20 m 8.042 8.022 10.002 9.982 10 1 13 000 11 10.022 10.002 105 85 12 25 II1 10.042 10.022 GB月12875-91镜表mm 公称1草径K 3比号谶用工件孔银No tl1 42 L lz 11.002 10.978 11 3000 m 11.026 11.002 125 99.5 m 11.050 1l.026 11 10.996 10.978 27.5 日11. 014 10.996 1 t 5000 140
3、117.5 m 11.032 11.014 四11.050 11.032 12.002 11.978 1 J 3000 H 12.026 12.002 125 102 m 12.050 12.026 12 11.996 11.978 30 日12.014 11. 996 1 J 5 000 145 120 m 12.032 12.014 12.050 12.032 14 13.002 12.978 11 3000 H 13.026 13.002 130 104.5 m 13.050 13.026 13 12.996 12.978 32.5 n 13.014 12.996 11 5000 145
4、 122.5 m 13.032 13.014 四13.050 13.032 14.013 13.976 11 3000 170 146 日14.050 14.013 13.996 13.978 14 35 II 14.014 13.996 11 5000 150 125 m 14.032 14. 014 IV 14.050 14.032 G8/T 12875-91 镇表mm 公称直径支号111 112 L K 11 适用工件孔径)No 15.013 14.976 1 1 3 000 175 148.5 11 15.050 15.013 14.996 14.978 15 37.5 u 15.01
5、4 14.996 11 5000 155 127.5 皿15.032 15.014 15.050 15.032 16.013 15.976 11 3000 175 151 11 16.050 16.013 15.996 15.978 16 40 H 16.014 15.996 11 5000 155 130 m 16.032 16.014 IV 16.050 16.032 16 17.013 16.916 11 3 000 180 153.5 H 11.050 11.013 16.996 16.978 17 42.5 11 17.014 16.996 11 5000 160 132.5 m 1
6、7.032 17.014 IV 17.050 17.032 18.013 17.976 1 I 3000 185 156 日18.050 18.013 17.996 17.978 18 45 11 18.014 17.996 11 5000 160 135 m 18.032 18.014 W 18.050 18.032 GB/T 12875-91 绩表mm 公称直径K 文号d, d2 L (适用工件孔径)No 19.017 18.972 1 1 3 000 210 182.5 H 19.062 19.017 19 19.002 18.972 47.5 115000 H 19.032 19.00
7、2 . 225 197.5 m 19.062 19.032 20.017 19.972 11 3000 215 185 日20.062 20.017 20 20.002 19.972 50 11 5000 20.032 20.002 230 200 m 20.062 20.032 21. 017 20.972 11 3000 215 187.5 H 21.创221. 017 21 21.,002 20.972 18 52.5 115000 H 21.032 21. 002 230 202.5 m 21.062 21.032 22.017 21. 972 11 3000 220 190 H 22
8、.062 22.017 22 22.002 21. 972 55 11 5000 日22.032 22.002 235 205 m 22.062 22.032 24.017 23.972 11 3000 225 195 H 24.062 24.017 24 24.002 23.972 60 1 I 5 000 II 24.032 24.002 240 210 m 24.062 24.032 GB/T 12875-91 续表mm 公称直径支号41 L K tl2 (适用工仲孔怪)No 25.017 24.972 11 3000 225 197.5 2S.062 25.017 25 25.002
9、24.972 62.5 11 5000 H 25.032 25. 002 240 212.5 m 25.062 25.032 18 26.017 25.972 11 3000 215 187 26.062 26.017 26 26.002 25.972 52 11 5000 H 26.032 26.002 230 202 m 26.062 26.032 28.017 27.972 11 3000 225 191 H 28.062 28.017 28 28.002 27.972 56 115000 日28.032 28.002 240 206 m 28.062 28.032 30.017 29.
10、972 11 3 000 230 195 H 30.062 30.017 30 30.002 29.972 60 11 5000 日30.032 30.002 245 210 22 丽30.062 30.032 -32.020 31. 966 11 3000 260 226 H 32.074 32.020 32.002 31. 966 11 5 000 II 32.038 32.002 275 244 32 m 32.074 32.038 64 31. 993 31. 966 H 32.020 31. 993 1 18000 315 280 m 32.047 32.020 IV 32.074
11、32.047 G8/T 12875一们续衰mm 公称直径K 支号4, d. L l. 适用工件孔径No 34.020 33.966 1 3000 265 230 E 34.014 S毒.0203毒.00233.966 1 t 5000 E 34.038 34.002 280 248 3毒黯34.014 34.038 22 68 33.993 33.96毡E 34.020 33.993 1.8000 315 284 览3垂.047S毒.020E军34.014 3毒.04735.020 34.966 1 t 3000 210 232 E 35.074 35.020 35.002 34.966 1
12、I 5000 豆35.038 35.002 285 250 35 应35.074 35.038 70 1 34.993 34.966 E 35.020 34.993 1雹8000320 286 因35.047 33.020 到35.014 35.047 25 E 37.020 36.966 1 3000 275 236 E 31.074 37.020 37.002 36.966 1 5000 g 31.038 37.002 290 254 37 m 37.074 31.038 74 36.993 36.96击豆37.020 36.993 1.8000 325 290 顶31.0基737.020
13、 :¥ 37.074 31.0毒7 一一一一二一一G8/T 1 2 8 7 5 - 9 1 镶表即lDl公称直径K 文号41 42 L 通用工件孔径)No 甜.02037.966 1 1 3000 275 238 H 38.074 38.020 38.002 37.966 11 5000 H 38.038 38.002 290 256 38 m 38.014 38.038 25 76 37.993 37.966 E 38.020 37.993 1 I 8 000 330 292 m 38.047 38.020 lV 38.074 38.047 40.020 39.966 11 3000 280
14、 242 E 40.074 40.020 40.002 39.966 1 I 5000 H 40.038 40.002 300 260 40 回40.074 40. 038 80 39.993 39.966 日40.020 39.993 11 8000 335 296 回40.047 40.020 W 40.074 40.047 28 42.020 41.966 1 I 3 000 285 246 日42.074 42.020 42.002 41.966 11 5000 日42.038 42.002 305 264 42 朋42.074 42.038 84 , 41. 993 41.966 H
15、 42.020 41.993 1 1 8 000 , 340 300 m 42.047 42.020 IV 42.074 42.047 GBjT 12875-91 续表盯1阳1公称直径文号d1 d2 L K 适用工件孔径)No 45. 020 44.966 1 1 3 000 295 252 日45.074 45.020 45.002 44.966 11 5000 日45.038 45.002 315 270 45 m 45.074 45.038 90 44.993 44.966 n 45.020 44.993 118000 350 306 m 45.047 45.020 W 45.074 4
16、5.047 47.020 46.966 1 3 000 300 256 n 47.074 47.020 47.002 46.966 11 5000 日47.038 47.002 320 274 47 m 47.074 47.038 32 94 46.993 46.966 n 41.020 46.993 11 8 000 355 310 m 47.047 47.020 阴47.074 47.047 50.020 49.966 11 3000 305 262 H 50.074 50.020 50.002 49.966 115000 n 50.038 50.002 325 280 50 m 50.0
17、74 50.038 100 49.993 49.966 n 50.020 49.993 118000 360 316 m 50.047 50.020 50.074 50.047 52.024 51. 960 I 3000 325 270 n 52.088 52.024 52.024 51. 960 I 5 000 450 398 52 n 52.088 52.024 36 78 52.004 51. 962 11 8000 H 52.046 52.004 465 414 m 52.088 52.046 GB/T 12875-91 镇表mm 公称赢径支号d1 d2 L K (通用工件孔佳)No
18、55.024 54.960 1 I 3 000 330 274.5 11 55.088 55.024 55.024 54.960 11 5000 455 402.5 55 日55.088 55.024 82.5 . 55.004 54.962 11 8000 H 55.046 55.004 470 418.5 回55.088 55.046 58.024 57.960 11 3000 335 279 u 58.088 58.024 58.024 57.960 1 I 5000 460 407 58 H 58.088 58.024 36 87 58.004 57.962 11 8000 n 58.
19、046 58.094 475 423 m 58.088 58.046 60.024 59.960 1 I 3 000 340 282 日60. 088 60.024 60.024 59.960 11 5 000 465 410 60 n 60.088 60.024 90 60.004 59.962 1 I 8000 H 60.046 60.004 480 426 m 60.088 60.046 62.024 61. 960 1 I 3 000 345 285 H 62.088 62.024 62.024 61. 960 1 1 5 000 470 413 62 H 62.088 62.024
20、93 62.004 61.962 1 I 8 000 11 62.046 62.004 485 429 III 62.088 62.046 65.024 64.960 40 1 1 3 000 350 289.5 II 65. 088 65.024 65.024 64.960 1 1 5 000 475 417.5 65 H 65.088 65.024 97.5 65.004 64.962 1 I 8 000 日65.046 65.004 490 433.5 III 65.088 65. 046 Q8/T 1 287 5 - 91 续表mm 公称直径K 支号适屠工件孔径No tl1 tl2 L
21、 11 12 : 68.024 67.960 11 3000 355 2章4E 68.088 68.024 68.024 67.960 1雹5000480 垂2268 E 68.088 68.02毒102 E 68.004 67.962 1.8000 E 68.046 68.00垂495 毒38应68.088 68.0毒6E 70.024 69.960 1 t 3 000 360 297 E 70.088 70.024 I 70.024 69.960 15000 毒85425 70 E 70.。在S70.024 毒。105 70.004 69.962 1 t 8000 E 70.04窑70.0
22、0毒500 哇哇1回70.088 70.046 72.024 71.960 l 3000 340 282 E 72.088 72.024 72.024 71.960 1.5000 470 410 72 E 72.088 72.92毒90 E 72.004 71.962 1 t 8000 E 72.046 72.004 基85426 回72.088 72.046 75.024 74.960 11 3000 350 285.75 n 15.088 75.024 I 75.024 7垂.9601. 5000 475 垂13.7575 E 75.088 75.024 93.75 75.004 74.9
23、62 1 t 8000 E 75.0毒在75.004 岳90429.75 45 回75.088 75.046 76.024 77.960 1 t 3000 78.024 355 289.5 E 78.088 78.024 77.960 1. 5000 毒20417.5 78 E 78.088 78.024 97.5 78.00垂77.962 1 t 8 000 E 78.046 78.004 495 433.5 m 78.088 78.046 G8/T 1 2875 - 91 续表mm 公称直径支号41 电L K 马适题工件在径No 80.024 19.960 1 1 3000 360 292
24、 H 80.088 80.024 80:024 19.9毒。115000 485 420 80 H 80.088 80.024 45 100 80.004 19.962 1 8 000 E 80.0毒80.004 500 436 m 80.088 80.046 85.029 84.954 113000 380 310 日85. 104 85.029 85.029 84.954 115000 530 460 85 n 85.104 85.029 85 85.004 84.954 118000 E 85.054 85.004 555 垂85m 85.104 85.054 90.029 89.954
25、 50 1.3000 385 315 n 90.104 90.029 90.029 89.954 1.5000 535 .毒奇590 H 90.104 90.029 90 90.004 89.954 1.8000 E 90.054 90.004 560 490 m 90.104 90.054 90.029 94.954 1 3 000 395 320 E 95.104 95.029 95.029 94.954 1 5 000 5垂5410 95 E 95. 104 5. 029 95 95.004 94.954 118000 H 95.054 95.004 570 495 m 95.104 9
26、5.054 55 100.029 99.954 1 3000 4闵325 u 100. 104 100.029 100.029 99.954 550 11 5 000 毒15100 100. 104 100.029 100 100.004 99.954 1军8000E 100.054 100.004 515 500 m 100.104 100.054 GB月1275-914 技术条件4.1 材料;公称直径为50mm时,T1 0Ao 公称直径为50mm时,20元雄钢管,4.2 热处理:TI0A为HRC58640 20元继钢管,栅深度。.81.2 mm,HRC 55600 4.3根据需要叫表面可翩
27、翩处理。4.4当公阳径为52mm时,叫采用空忡接结构,附录A瞅后作中心孔,热处理后附中心孔,按表要求精加工。4.5 t输可成组制造成组使用,也可按附录A以1件孔蚀带分布脱椒才分布回单根制造,单根使用。i 标记5. 1 ;标记示例i公称直径为52mm位皮K= 11 3000,史中的帧峭18输52-1:3 000嗣IGB月12875斗lAl 芯轴安提长度l2的确定。适用工件孔径安装怯度hGB/T 1 287 5 - 91 附录A锥度芯轴使用说明(补充件)表Al25-50 24 50-70 1.54 70-80 1.254 mm 80-100 4 A2 芯袖K值应根据工件孔的直径、长度Lo及同轴度离
28、求的公盖等级来选用(见者A2)。我A2适用工仲孔径,mmK 8-10 10-18 18-30 30-50 50-100 间辅度公盖等级GB 1184 Lo.帽,mm18 24 30 36 45 6 1 I 3 000 30 36 45 60 75 7 45 60 75 90 120 8 25 30 40 50 5 40 50 60 75 6 11 5000 60 75 100 125 7 100 125 150 200 8 64 80 5 11 8 000 96 120 6 160 200 7 注:工件孔币45,怯60恤,罔袖皮5辙,根据表A2可选用K=118000芯袖来加工.工件孔币45,长
29、30mm,同输度5级,根据表M则可选用K叫15000芯袖来加工.A3 不同偏毅的工件孔对芯袖、文号的选用,可按图AI-A6所示不同工件孔公楚带分布及芯轴尺寸分布图对应选用芯袖。例:10F8孔可选用10幽1: 3 OOO-II及10-1: 3 000幽皿两根,份10K8孔可选用10辆1: 3 000-1及10斗:3 OOO-II两根。cl0N6孔可选用10-1: 3 000-1一根。G8fT 12875 91 适用工仲孔径8.,10mm I件孔公接带分布及芯轴尺寸分布罔芯袖五件孔公xi带范l倒l 3000 42 + 36 + 22 () - 18 图A1适用工仲孔径10-18mm 工件孔公雄带分
30、带及芯轴尺寸分布罔芯输l 3000 l 5000 王仲孔公釜带施阴d= 11-13mm d= 14-18mm d= 1O -18mm +, + + 43: 回A2GB/T 12875-91 适用工件孔径18-30mm 工件孔公撞带分布及芯袖尺寸分布图工仲孔公楚帘.;t输130 150 + 62 + 62 + 53 + 52 1 m 日+注lI I rt; H9 + 20 幽1. 71 n +2 。圈A3GB/T 12875一91适用工件孔径3050mm 工件孔公羡带分布及芯轴尺寸分布图工件孔公差带范阂芯输1: 3000 1: 5000 1.800U + 74 +7 +Ti In +64 + 6
31、2 I I I m 日+ 47 + 38 + 38 111 11 + 24 。 34 图A4。+ 76 俨腼叫FIJ F7 GBjT 12875-91 适用工件孔径50.,80mm 工件孔公笼带分布及芯轴尺寸分布图王仲孔公主E带阀芯轴1: 3000 1: 5000 1: 8000 + 88 |门俨+88,翩翩+ 40 + 46 F + 74 F唰叫俨.,1 IHH m 1 1 11 均可r:户+ 30 ,., H8 + 28 忡叫F241 1巾.E G7 G唱+1臼1-日6+ 10 + 10 H7 + 18 1+241 1+24 斗忖LJLJ J呱J7!J61JS6俨叫1. i I 1-忡叫L
32、JidK61K7r8 、叫咱21阁A5- 5 阳嗣唰1M户、国-38 GB/T 12875-91 适用工件孔校工件孔公整带分布及芯袖尺寸分布阁;芯输王仲孔公f青藏l蝇1: 3000 1:1: 8000 + 104 + 104 + 104 俨俨晰、俨叫+90 F叫+ 87 俨叫m t t+F7f li tFS t 广89 问H7 + 1212 日6I I IJ8 o n I I fI 而卡2司1+2141+2咧1+29 H + 22 1+ 16 1+ 11 + 16 叫丁H 目U门M门川l川A +4 。iO-I 20 哼181宫皿.JN6JN 7 1- 281 LJ:tS L 骂t:-t6吁吁圈A6GBjT 1 1 - 1 川I术标准自中华人民刷刷fI翩翩例所剿,本标准mm_日棚标准t研究所归口,本标准酬自fli棚标准化研究所倾衅。柳州&dtt.:机r,t刷刷r,.四川r沈阳旧机厂,&11川*ro本标准lz jl, JB胁(制时)慨。
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