冲床冲压力计算Word文档下载推荐.docx

1、 b-材料抗拉强度（Mpa） K-修正系数金属板材冲切吨位的计算方法:公式：冲芯周长（mm）*板材厚度（mm）*材料的剪切强度（mm）冲切力系数质：1.3如果换算成公吨：用KN / 9.81冲芯周长-任何形状的各个边长总长材料厚度-指冲芯要冲孔穿透的板材的厚度材料的剪切强度-板材的物理性质,由板材的材质所决定，可在材料手册中查到。常见的剪切强度如下：材料剪切强度（KN/mm2）铝5052 H320.1724黄铜0.2413低碳钢0.3447不锈钢0.5171举例：在3.00mm厚的低碳钢板材上冲孔，形状方形，边长20.00mm充芯周长=80.00mm材料厚度=3.00mm剪切强度=0.3447

2、KN/mm2换算成公吨：计冲切力系数质：算：80.00*3.00*0.3447=82.73 KN82.73KN / 9.81=8.43吨8.43吨*1.3=10.959吨（冲压吨位）课程常用附表附表1 钢材和连接的设计强度值附表1.1 钢材的强度设计值（）钢材抗拉、抗压和抗弯抗剪端面承压（刨平顶紧）牌号厚度或直径（Q235钢1621512532516 4020512040 6020011560 100190110Q345钢31018040016 3529517035 5026515550 100250145Q390钢350415335315Q420钢3802204403602103401951

3、85注：表中厚度系指计算点的钢材厚度，对轴心受拉和轴心受压构件系指截面中较厚板件的厚度。附表1.2 钢铸件的强度设计值（钢号抗拉、抗压和抗弯抗 剪端面承压（刨平顶紧）ZG200 40090260ZG230 450105290ZG270 500ZG310 570240140370附表1.3 焊缝的强度设计值（焊接方法和焊条型号构件钢材对接焊缝角焊缝厚度或直径抗压焊缝质量为下列等级时，抗拉和抗剪一级、二级三级自动焊、半自动焊和E43型焊条的手工焊160175动焊和E50型焊225动焊和E55型焊3002852703203052751 自动焊和半自动焊所采用的焊丝和焊剂，应保证其熔敷金属的力学性能不

4、低于现行国家标准埋弧焊用碳钢焊丝和焊剂GB/T 5293和低合金钢埋弧焊用焊剂GB/T 12470中相关的规定。2 焊缝质量等级应符合现行国家标准钢结构工程施工质量验收规范GB/T 50205的规定。其中厚度小于8 mm钢材的 对接焊缝，不应采用超声波探伤确定焊缝质量等级。3 对接焊缝在受压区的抗弯强度设计值取，在受拉区的抗弯强度设计值取。4 表中厚度系指计算点的钢材厚度，对轴心受拉和轴心受压构件系指截面中较厚板件的厚度。附表1.4 螺栓连接的强度设计值（螺栓的钢材牌号（或性能等级）和构件钢材牌号普通螺栓锚栓承压型连接高强度螺栓C级螺栓A级、B级螺栓抗拉承压4.6级、4.8级5.6级8.8级高

5、强度螺栓10.9级500构件4054703855105905306154255606551 A级螺栓用于mm和或mm（按较小值）的螺栓；B级螺栓用于mm或mm（按较小值）的螺栓。为公称直径，为螺杆公称长度。2 A、B级螺栓孔的精度和孔壁表面粗糙度，C级螺栓孔的允许偏差和孔壁表面粗糙度，均应符合现行国家表中钢结构工程施工质量验收规范GB 50205的要求。附表1.5 铆钉连接的强度设计值（铆钉钢号和构件钢材牌号抗拉（钉头拉托）类孔I类孔铆钉BL2或BL3450365565460480附表1.6 普通螺栓规格及有效截面面积公称直径（mm）121416182022242730有效截面面积0.841.

6、151.571.922.453.033.534.595.613336394245485256606.948.179.7611.213.114.717.620.323.66468727680859510026.830.634.638.943.449.555.962.770.0附表1.7 锚栓规格附表2 轴心受压构件的稳定系数附表2.1 a类截面轴心受压构件的稳定系数123456789104050701301502301.0000.9950.9810.9630.9410.9160.8830.8390.7830.7140.6380.5630.4940.4340.3830.3390.3020.2700

7、.2430.2200.1990.1820.1660.1530.1410.1300.9940.9790.9610.9390.9130.8790.8340.7760.7060.6300.5550.4880.4290.3780.3350.2980.2670.2410.2180.1980.1800.1650.1520.1400.9930.9770.9590.9370.9100.8750.8290.7700.6990.6220.5480.4810.4230.3730.3310.2950.2640.2380.2150.1960.1790.1640.1500.1390.9920.9760.9570.9340

8、.9070.8710.8240.7630.6910.6150.5410.4750.4180.3690.3270.2920.2620.2360.2130.1940.1770.1620.1490.1380.9990.9910.9740.9550.9320.9040.8670.8180.7570.6840.6070.5340.4690.4120.3640.3230.2890.2590.2330.2110.1920.1750.1610.1480.1360.9890.9720.9520.9290.9000.8630.8130.7500.6760.6000.5270.4630.4070.3600.3200

9、.2850.2560.2310.2090.1900.1740.1590.1470.1350.9980.9880.9700.9500.9270.8970.8580.8070.7430.6680.5920.5200.4570.4020.3560.3160.2820.2530.2290.2070.1890.1720.1580.1460.1340.9860.9680.9480.9240.8940.8540.8010.7360.6610.5850.5140.4510.3970.3510.3120.2790.2510.2260.2050.1870.1710.1570.1440.1330.9970.9850

10、.9660.9460.9210.8900.8490.7950.7280.6530.5770.5070.4450.3920.3470.3090.2760.2480.2240.2030.1850.1690.1550.1430.1320.9960.9830.9640.9440.9190.8860.8440.7890.7210.6450.5700.5000.4400.3870.3430.3050.2730.2460.2220.2010.1830.1680.1540.1420.131附表2.2 b类截面轴心受压构件的稳定系数0.9360.8990.8560.7510.6880.6210.4930.437

11、0.3450.3080.2490.2250.2040.1860.1700.1560.1230.9670.8950.8520.8020.7450.6810.6140.5490.4870.4320.3410.3040.2230.2020.1840.8910.8470.7970.7390.6750.6080.5420.4260.3370.3010.2440.2000.1670.9870.9600.9250.8870.8420.7910.7320.6010.5360.4210.3740.3330.1810.9220.8820.8380.7860.7260.5940.5290.4700.4160.370

12、0.3290.2650.2390.2160.1970.1510.1290.9530.9180.8780.8330.7800.7200.6550.5880.5230.4640.4110.3650.3260.2910.2140.1950.1780.1630.1280.9140.8740.8280.7740.6480.5810.5170.4580.4060.3610.3220.2880.2340.2120.1930.1760.1370.1270.9780.8700.8230.7690.7070.6410.5750.5110.4530.3570.3180.2320.2100.1910.1600.126

13、0.9430.9060.8650.7010.6350.5680.5050.4470.3530.3150.2540.2080.1730.1250.9730.9030.8610.6940.6280.5610.4990.4420.3490.3110.2270.2060.1880.1450.124附表2.3 c类截面轴心受压构件的稳定系数0.9020.7750.7090.6430.5780.4190.3790.3420.2800.2300.1190.9900.8960.7680.7020.6360.5720.4150.3750.3060.2770.2280.8260.7620.6950.6290.5660.4540.3710.3030.2740.9470.8840.8200.7550.6890.6230.5590.4490.3670.3320.3000.2710.9400.8770.8140.7480.6820.61