冲床冲压力计算资料

1、手啤机(人工操作在压力机) ,5吨, 8吨, 10吨, 16吨, 25吨, 35 吨, 40吨, 63吨, 80 吨,100 吨,120 吨,160 吨,200 吨,等等.这只是普通的按吨位的分类.还有是按普通型 的或国标型的或者是定做的专机,这都是有区别的.如果按功能上分又可分为：深虎口式, 普通可倾式,拉深用(超大行程)式,液压冲床,等等, ,冲床冲压力计算公司p=kit r其中:k为系数,一般约等于1,i 冲压后产品的周长 ,单位 mm; t 为材料厚度 ,单位 mm;r为材料抗剪强度.单位MPa .算出的结果是单位是牛顿 ,在把结果除以 9800N/T, 得到的结果就是数字是多少就是多

2、少 T. 这个只能算大致的 ,为了平安起见 ,把以上得到的值乘以 2就可以了 ,这样算出的值也符合复 合模的冲压力 .指外力与材料轴线垂直,并对材料呈剪切作用时的强度极限1 A3抗剪强度为：261274MPa或26.628Kgf/mm245# 抗剪强度为： 411MPa 或 42Kgf/mm2计算公式：抗剪强度=0.60.8抗拉强度冲裁力计算公式：P=K*L*t* tP平刃口冲裁力(N);t 材料厚度 (mm);L 冲裁周长(mm);t 材料抗剪强度 (MPa);K平安系数,一般取K=1.3.冲剪力计算公式： F=S*L*440/10000S工件厚度L工件长度 一般情况下用此公式即可.冲压力是

3、指在冲裁时,压力机应具有的最小压力.P冲压=P冲裁+P卸料+P推料+P压边力+P拉深力冲压力是选择冲床吨位,进行模具强度.刚度校核依据.1、 冲裁力：冲裁力及其影响周素 :使板料别离动称作冲裁力 .影响冲裁力的主要 因素:2冲裁力计算：P 冲=Lt (T b其中：P冲裁-冲裁力L-冲裁件周边长度t- 板料厚度t b-材料强度极限t b-的参考数0.6 算出的结果单位为KN3、卸料力：把工件或废料从凸模上卸下的力Px=KxP冲 中其中Kx-卸料力系数Kx-的参考数为0.04算出的结果单位为 KN4、推件力：将工件或废料顺着冲裁方向从凹模内推出的力Pt=KtPnKt- 推件力系数 n- 留于凹模洞

4、口内的件数其中:Px、Pt -分别为卸料力、推件力Kx,Kt 分别是上述两种力的修正系数P冲裁力；n 查正表卡在凹模洞口内的件数Kt 的参考数为 0.05, 结果单位为 KN5、压边力：P y=1/4 D2 ( d1+2R凹)2P式中D 毛坯直径d1 凹模直径R 凹 凹模圆角半径p 拉深力6、拉深力：Fl= d1 bk1(N)式中d1 首次拉深直径( mm)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

5、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/mm 2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=0.3447KN/mm 2换算成公吨：用 KN / 9.81计冲切力系数质：1.3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

6、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N/mm钢材抗拉、抗压 和抗弯f抗剪fv端面承压刨平顶紧fee牌号厚度或直径mmQ235 钢<16215125325>16 40205120>40 60200115>60100190110Q345 钢<16310180400>16 35295170>35 50265155>50100250145Q390 钢<16350205415>16 35335190>35 50315180>50100295170Q420 钢<16380220440>16 35360210

7、>35 50340195>50100325185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N/mm2钢号抗拉、抗压和抗弯f抗剪fv端面承压刨平顶紧feeZG200 -40015590260ZG230 -450180105290ZG270 -500210120325ZG310 -570240140370附表1.3焊缝的强度设计值N/mm2焊接方法和焊条型号构件钢材对接焊缝角焊缝牌号厚度或直径mm 抗压f W1 c焊缝质量为以下等级时,抗拉ftw抗剪fvW抗拉、抗压和抗剪ffW一级、二级三级自动焊、半自动焊和E43型

8、焊条的手工焊Q235 钢<6215215185125160>16 40205205175120>40 60200200170115>60100190190160110自动焊、半自 动焊和E50型焊 条的手工焊Q345 钢<6310310265180200>16 35295295250170>35 50265265225155>50100250250210145自动焊、半自动焊和E55型焊条的手工焊Q390 钢<6350350300205220>16 35335335285190>35 50315315270180>5010

9、0295295250170Q420 钢<6380380320220220>16 35360360305210>35 50340340290195>50100325325275185注：1 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标准?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fc

10、W,在受拉区的抗弯强度设计值取ftW.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N/mm2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ftb抗剪f b1 v承压fvb抗拉ftb抗剪f b1 v承压fvb抗拉ftb抗拉ftb抗剪f b1 v承压f b1 v普通螺栓4.6 级、4.8级1701405.6级2101908.8级400320锚栓Q235 钢140Q345 钢180高强度螺栓8.8级40025010.9 级500310构件Q235 钢305405470Q345 钢

11、385510590Q390 钢400530615Q420 钢425560655注：1 A级螺栓用于d -：;24 mm和I ：10d或I -：;150 mm 按较小值的螺栓；B级螺栓用于d 24 mm或丨祗10d或I .150 mm 按较小值的螺栓.d为公称直径,I为螺杆公称长度.2 A、B级螺栓孔的精度和孔壁外表粗糙度,C级螺栓孔的允许偏差和孔壁外表粗糙度,均应符合现行国家表中钢结构工程施工质量验收标准? GB 50205的要求.附表1.5铆钉连接的强度设计值N/mm2 铆钉钢号和构件钢材牌号抗拉钉头拉托ft抗剪fvr承压fcrI类孔I类孔I类孔I类孔铆钉BL2 或 BL3120185155

12、构件Q235 钢450365Q345 钢565460Q390 钢590480附表1.6普通螺栓规格及有效截面面积Ae mm2附表1.7锚栓规格锚栓直径d mm 计算净截面积cm2锚栓容许3号钢拉力KN 16Mn皿型锚板宽度c mm锚栓锚板厚度mr20242.453.53305.61364248563.1711.2014.7020.3034.349.4278.5446.55 67.07 106.59114.38155.23156.8212.814020205.8279.320020284.2385.7200206472889026.834.6043.4455.91375.2484.4608.16

13、782.74509.2657.4825.361062.2924028035040025304040公称直径mm121416182022242730有效截面面积0.841.151.571.922.453.033.534.595.61公称直径mm333639424548525660有效截面面积6.948.179.7611.213.114.717.620.323.6公称直径mm6468727680859095100有效截面面积26.830.634.638.943.449.555.962.770.0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©01234567801

14、.0001.0001.0001.0000.9990.9990.9980.9980.9970.996100.9950.9940.9930.9920.9910.9890.9880.9860.9850.983200.9810.9790.9770.9760.9740.9720.9700.9680.9660.964300.9630.9610.9590.9570.9550.9520.9500.9480.9460.944400.9410.9390.9370.9340.9320.9290.9270.9240.9210.919500.9160.9130.9100.9070.9040.9000.8970.8940

15、.8900.886600.8830.8790.8750.8710.8670.8630.8580.8540.8490.844700.8390.8340.8290.8240.8180.8130.8070.8010.7950.789800.7830.7760.7700.7630.7570.7500.7430.7360.7280.721900.7140.7060.6990.6910.6840.6760.6680.6610.6530.6451000.6380.6300.6220.6150.6070.6000.5920.5850.5770.5701100.5630.5550.5480.5410.5340.

16、5270.5200.5140.5070.5001200.4940.4880.4810.4750.4690.4630.4570.4510.4450.4401300.4340.4290.4230.4180.4120.4070.4020.3970.3920.3871400.3830.3780.3730.3690.3640.3600.3560.3510.3470.3431500.3390.3350.3310.3270.3230.3200.3160.3120.3090.3051600.3020.2980.2950.2920.2890.2850.2820.2790.2760.2731700.2700.26

17、70.2640.2620.2590.2560.2530.2510.2480.2461800.2430.2410.2380.2360.2330.2310.2290.2260.2240.2221900.2200.2180.2150.2130.2110.2090.2070.2050.2030.2012000.1990.1980.1960.1940.1920.1900.1890.1870.1850.1832100.1820.1800.1790.1770.1750.1740.1720.1710.1690.1682200.1660.1650.1640.1620.1610.1590.1580.1570.15

18、50.1542300.1530.1520.1500.1490.1480.1470.1460.1440.1430.1422400.1410.1400.1390.1380.1360.1350.1340.1330.1320.1312500.130附表2.2 b类截面轴心受压构件的稳定系数©235012345678901.0001.0001.0000.9990.9990.9980.9970.9960.9950.994100.9920.9910.9890.9870.9850.9830.9810.9780.9760.973200.9700.9670.9630.9600.9570.9530.950

19、0.9460.9430.939300.9360.9320.9290.9250.9220.9180.9140.9100.9060.903400.8990.8950.8910.8870.8820.8780.8740.8700.8650.861500.8560.8520.8470.8420.8380.8330.8280.8230.8180.813600.8070.8020.7970.7910.7860.7800.7740.7690.7630.757700.7510.7450.7390.7320.7260.7200.7140.7070.7010.694800.6880.6810.6750.6680.6

20、610.6550.6480.6410.6350.628900.6210.6140.6080.6010.5940.5880.5810.5750.5680.5611000.5550.5490.5420.5360.5290.5230.5170.5110.5050.4991100.4930.4870.4810.4750.4700.4640.4580.4530.4470.4421200.4370.4320.4260.4210.4160.4110.4060.4020.3970.3921300.3870.3830.3780.3740.3700.3650.3610.3570.3530.3491400.3450

21、.3410.3370.3330.3290.3260.3220.3180.3150.3111500.3080.3040.3010.2980.2950.2910.2880.2850.2820.2791600.2760.2730.2700.2670.2650.2620.2590.2560.2540.2511700.2490.2460.2440.2410.2390.2360.2340.2320.2290.2271800.2250.2230.2200.2180.2160.2140.2120.2100.2080.2061900.2040.2020.2000.1980.1970.1950.1930.1910

22、.1900.1882000.1860.1840.1830.1810.1800.1780.1760.1750.1730.1722100.1700.1690.1670.1660.1650.1630.1620.1600.1590.1582200.1560.1550.1540.1530.1510.1500.1490.1480.1460.1452300.1440.1430.1420.1410.1400.1380.1370.1360.1350.1342400.1330.1320.1310.1300.1290.1280.1270.1260.1250.1242500.123附表2.3 c类截面轴心受压构件的稳

23、定系数 ©1.0001.0000.9920.9900.9660.9590.9020.8960.8390.8330.7750.7680.7090.7020.6430.6360.5780.5720.5170.5110.4630.4580.4190.4150.3790.3750.3420.3390.3090.3060.2800.2770.2540.2510.2300.2280.2100.2080.1920.1901.0000.9990.9880.9860.9530.9470.8900.8840.8260.8200.7620.7550.6950.6890.6290.6230.5660.559

24、0.5050.5000.4540.4490.4110.4070.3710.3670.3350.3320.3030.3000.2740.2710.2490.2460.2260.2240.2060.2050.1890.1870.9990.9830.9400.8770.8140.7480.6820.6160.5530.4940.4450.4030.3640.3280.2970.2690.2440.9980.9810.9340.8710.8070.7420.6760.6100.5470.4880.4410.3990.3600.3250.2940.2660.2420.9970.9780.9280.865

25、0.8010.7350.6690.6040.5410.4830.4360.3950.3560.3220.2910.2640.2390.222 0.220 0.2180.2030.2010.1990.1860.1840.1820.9960.9750.9210.8580.7940.7290.6620.5970.5350.4770.4320.3910.3530.3190.2880.2610.2370.2160.1970.1810.9950.9730.9150.8520.7880.7220.6560.5910.5290.4720.4280.3870.3490.3150.2850.2580.2350.2

26、140.1960.1790.9930.9700.9090.8460.7810.7150.6490.5840.5230.4670.4230.3830.3460.3120.2820.2560.2330.2120.1940.17801020304050607080901001101201301401501601701801902000.1760.1750.1730.1720.1700.1690.1680.1660.1650.1632100.1620.1610.1590.1580.1570.1560.1540.1530.1520.1512200.1500.1480.1470.1460.1450.144

27、0.1430.1420.1400.1392300.1380.1370.1360.1350.1340.1330.1320.1310.1300.1292400.1280.1270.1260.1250.1240.1240.1230.1220.1210.1202500.119附表2.4 d类截面轴心受压构件的稳定系数©计235012345678901.0001.0000.9990.9990.9980.9960.9940.9920.9900.987100.9840.9810.9780.9740.9690.9650.9600.9550.9490.944200.9370.9270.9180.9090.9000.8910.8830.8740.8650.857300.8480.8400.8310.8230.8150.8070.7990.7900.7820.774400.7660.7590.7510.7430.7350.7280.7200.7120.7050.697500.6900.6830.6750.6680.6610.6540.6460.6390.6320.625600.6180.6120.6050.5980.5910.5850.5780.5720.5650.559700.5520.5460.5400.5340.5280.5220.5160.5100.5040.