平键介绍、分类及尺寸

1、平键介绍、分类及尺寸平键介绍、分类及尺寸、普通平键1、普通平键的概念、结构、尺寸普通平键（GB1096-2003分为三种结构形式，如图所示（倒角或倒圆未画），A型为圆头普通平键，B型为方头普通平键，C型为单圆头普通平键。普通平键的主要结构尺寸为键宽b、键高h、键长L。4EH3U脚B型晋通平键(GB1056-2003)2、普通平键的标记格式为：名称键的形式键宽bX键高hX键长LGB1096-2003其中A型普通平键的形式A可以省略不住例如A型普通平键，b=8,h=7,L=25,标记为键8X7X25GB10962003,如为B型普通平键，尺寸同上，则标记为：键B8X7X25GB1096-2003。

2、除了普通平键外还有薄型普通平键，用于受力较小的连接，其国标代号为GB1657-2003,结构同GB1096-2003相同，也分为AB、C型。普通平键依靠的是键的两个侧面来传递动力柚径疗b?半泾厂bhL较松谥连接一般慑连接较紧健连接轴H9no轴N9般Js9轴和载pgtft小址大6?8226?202+0.0250+0.0600.0200?004一0.029±0.0125一0.006-0-0311.2十0.1014-0.100.030?1>8?103363631.81?4>10-12448454+0.0300+0.078+0?0300-0.030±0.015-0.01

3、2-0?0422.51?i>12?175510?5653?02.30.160.25>17-226614?7063.52.?>22?308.718?908+0?03604-0.09?0.0400一0.036士0.018-0.015一0.0514.040.203.3+0.20，>30-3810822?110105.03.3,0.250<40>38?441282814012+0.0430+0?120+0.0500-0.043±0.0215-0.018一0?0615.03.3:>44?5014936760145.53?8>5058161045?

4、180166.04.3键的公休尺寸度更度06.8.10>12.14.16、18.20、22、25.2&32.36、40.45.50.56.6370、80.90.100.110.125.L（系列）140.160.180绘图时与键有关的数据，如槽深、槽宽必须查上面的表画图3、画法3.1键槽的画法其中如标注偏差，应该按照上面标中的要求和说明进行标注3.2普通平键连接画法普逍平键的连接画法:、普通平键型式与尺寸标准：摘自GB/T1095-1979,GB/T1096-1979（1990年确认有效）GB1096.SLDPRT模型(M)GB1096.CATPart0+0.020010?1244

5、)?8450.254+0.030?+0.078?-0.000?-0.030±0.015-0.012?-0.0422.5+0.1?12?175510?0.45+0.000?0+0.038?+0.030-0.000?-0.030±0.015-0.012?-0.0423+0.1?017?226614?0.46+0.030?0+0.078?+0.030-0.000?-0.030±0.015-0.012?-0.0423.5+0.1?1022?308718?0.48+0.036?0+0.098?+0.040-0.000?-0.036±0.018-0.015?-0.0

6、514+0.2?030?3810822?1100.610+0.036?0+0.098?+0.040-0.000?-0.036±0.018-0.015?-0.0515+0.2?038?4412828?1400.612+0.043?0+0.120?+0.050-0.000?-0.043±-0.018?-0.0615+0.2?044?5014936?1600.614+0.043?0+0.120?+0.050-0.000?-0.043±-0.018?-0.0615.5+0.2?1050?581610145?1800.616+0.043?0+0.120?+0.050-0.0

7、00?-0.043±-0.018?-0.0616+0.2?058?6565?7575?8585?9595?110110?130130?150150?4017011氏？2000.618+0.043?12156?2200.820+0.002?014(63?2500.822+0.052?0140?2800.825+0.052?01630?3200.828+0.052?018(90?3600.832+0.062?020100?4001.236+0.062?022100?4011.240+0.062?018202225283236+0.120+TO+0.080+0.180+0.080+0.06

8、5+0.149+0.065+0.149+0.065+0.149+0.065+0.180+0.080+0.180-0.000?-0.043-0.000?-0.052-0.000?-0.052-0.000?-0.052-0.000?-0.052-0.000?-0.062-0.000?-0.062-0.000?-0.062±0.0215±0.026±0.026±0.026±0.026±0.031±0.031±0.031-0.018?-0.061-0.022?-0.074-0.022?-0.074-0.022?-0.074

9、-0.022?-0.074-0.026?-0.088-0.026?-0.088-0.026?-0.088+0.2+0.27.51011121310+0.20+0.20+0.210+0.20+0.3+0.3170?200230260290330330?380380?44050045505663708090100252832323640455010?1450125?500500500180?500200?500220?500250?5001.21.24550566370809010+0.062+0.0020+0.0740+0.0740+0.0740+0.0740+0.087+0.087+0.180

10、+0.080+0.220+0.100+0.220+0.100+0.220+0.100+0.220+0.100+0.260+0.120+0.260+0.120-0.000?-0.062-0.000?-0.062-0.000?-0.074-0.000?-0.074-0.000?-0.074-0.000?-0.074-0.000?-0.087-0.000?-0.087±0.031±0.031±0.037±0.037±0.037±0.037-0.026?-0.088-0.026?-0.088-0.032?-0.106-0.032?-0.106

11、-0.032?-0.106-0.032?-0.106-0.037?-0.124-0.037?-0.124+0.315?17+0.3310+0.320?I0+0.320?10+0.322?10+0.325?0+0.328?10+0.331l (系列)：6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 45,50,56,63,70,80,90,100,110,125,140,160,180,200,220,250,280,320,360,400,450,500三、薄型平键、键槽的剖面尺寸及公差标准：摘自GB/T1566-2003,GB/T1

12、567-2003模型(M):GB1567.CATPartGB1567.SLDPRT公称尺寸宽度b极限偏差深度b(h9)h(h11)公.较松键联结称L(h14)尺轴H9毂D10b,般键联结轴N9毂Js9较紧键联结轴P9极限偏差宽度图度(PB) (PH)12倒角高名义长度度(PHH)(NLG)0.25+0.030+0.078-0.012+0.10?±1.810.456+0.030-0.0300.015-0.0421717?2222?83030?103838?1244140.25?0.40.25?0.40.4?0.60.4?0.60.4?+0.030?+0.078?0?-0.012?+0.

13、114?70+0.030-0.030士0.015-0.0422.5+0.036?+0.098?0?-0.015?+0.118?9022?11028?14036+0.040-0.036士0.018-0.051101214+0.036?+0.043?+0.043?+0.098?+0.040+0.120?+0.050+0.120?0?-0.036士0.0180?-0.043土0.02150?土0.0215-0.015?-0.051-0.018?-0.061-0.018?+0.13.53.53.5+0.1+0.144?500.61600+0.050-0.043-0.0610>50?581670.

14、4?0.645?18016+0.043?0+0.120?+0.0500?-0.043±0.0215-0.018?-0.0614+0.20>58?651870.4?0.650?20018+0.043?0+0.120?+0.0500?-0.043±0.0215-0.018?-0.0614+0.20>65?r52080.6?0.856?22020+0.052?0+0.149?+0.0650?-0.052±0.026-0.022?-0.0745+0.20l>I75?852290.6?0.863?25022+0.052?0+0.149?+0.0650?-0

15、.052±0.026-0.022?-0.0745.5+0.20>85?25995>95?2810110>0.6?0.80.6?0.87028080'320+0.052250+0.052280+0.149+0.0650?-0.0520.026-0.022?-0.0745.5+0.149?+0.0650?-0.0520.026-0.022?-0.074+0.20+0.20110?32130>130?36150110.6?0.890360+0.062320+0.180+0.0800?-0.0620.031-0.026?-0.088+0.2121.0?1.21

16、00?400+0.062360+0.180+0.0800?-0.062-0.026?+0.20.031-0.0887.5l （系列）： 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 45, 50,56,63,70,80,90,100,110,125,140,160,180,200,220,250,280,320,360,4004、 描述（D）1 、在工作图中，轴槽深用t或（d-t）标注，毂槽深用（d+t1）标注。2 、（d-t）和（d+t1）两个组合尺寸的极限偏差按相应的t和t1的公差选取，但（d-t）极限偏差取负号（-）。3 、轴槽长度公差用

17、H14。4 、为便于装配、轴槽及毂对轴及轮毂轴线的对称度公差根据不同要求，一般可按GB1184-1996中附表4对称长公差7?9级选取。键槽（轴槽及轮槽）的对称度公差尺寸是指键宽b。5 、材料、键用型钢的抗拉强度不小于590MPa般用途时推荐采用45、35号钢。6 、当键长与键宽比大于或等于8时，b面在长度方向的平行度应符合GB1184-1996,当b<6mm按7级,b>8?36mn按6级；当b>40mm按5级。5、 标记示例：圆头薄型平键（A型），b=16mm,h=7mm±=100mm键16X7X100GB1567-2003平头薄型平键（B型），b=16mm,h=7mm_L=100mm键B16X7X100GB1567-2003单圆头薄型平键（C型），b=16mm,h=7mm,L=100mm2?格DDD2D3HH1hz-d805566166650*3.53?M610072842274.5553?M812595108308458413010011586603.516013014240956551