折弯作业指导书汇总

文件编号TS/QS06.04-2015文件版本A发放编号受控标识折弯通用作业指导书编制日期审核日期批准日期.适用范围本公司钳工工序所使用液压折弯机、手动折弯机、以及手工使用锤子等工具折弯工件的工序二.作业前准备使用液压折弯机加工，必须熟悉折弯机 操作规程 操作规程下载怎么下载操作规程眼科护理技术滚筒筛操作规程中医护理技术操作规程 ，熟悉机床操作。核对图纸和所要加工工件相符合，包括尺寸、厚度、材质等，以及确认工艺单上所要求折弯前的工序如钻（沉）孑L、去毛刺等。工作前确认机床正常，模具刀具无误。详细参考折弯工艺规程。对折弯印痕有严格要求的产品（例如：TE003铜排系列，TE6112不锈钢系列等），在折弯时垫防压痕保护膜保证产品外观无折弯压痕。三•工作内容使用靠模定位或者划线、量尺定位。试弯。保证精度符合公差要求。自检。确认靠模无误。按图加工四.工艺规程弯曲过程：一般弯曲过程可分为二个阶段:工件在外力作用下仅产生几何变形的阶段，称之为自由弯曲•当外力超过材料的屈服极限，工件就开始产生塑性变形，一直到工件成型的这个阶段，就称为拉伸弯曲.最小弯曲半径与材料的纤维方向：不同的材料具有不同的最小弯曲半径.见<表24>表24各种材料的最小弯曲半径表材料退火的或正火的冷作硬化的弯曲线位置垂直纤维平行纤维垂直纤维平行纤维0.8,100.1t0.4t0.4t0.8t15,200.1t0.5t0.5t1t25,300.2t0.6t0.6t1.2t35,400.3t0.8t0.8t1.5t45,500.5t1t1t1.7t55,600.7t1.3t1.3t2t磷铜————1t3t半硬黄铜0.1t0.35t0.5t1.2t软黄铜0.1t0.35t0.35t0.8t紫铜0.1t0.35t1t2t铝0.1t0.35t0.5t1.0t注:①当弯曲线与纤维方向成一定角度时，可采用垂直和平行纤维方向二者的中间数值.中冲载或剪裁后没有退火的毛料应作为硬化的金属选用.弯曲时应使有毛刺的一边处于弯角的内侧.表中t为板料厚度.从上表可以看出同一种材料的不同纤维方向的最小弯曲半径也不相同•因此折弯时（特别是小弯曲角时）要特别注意材料的纤维方向.3•展开算料：展开算料是铆工和从事展开下料工种的最基本要求的常知,—般展开算料的方法有以下几种：①按薄板中性层位置的计算方法中性层弯曲半径：XoRo=r（5（1）Ro式中Xo——中性层位置系数。5薄板厚度。R――弯曲半径。中性层位置系数Xo按t/5查表25得出。表25中性层位置系数表r/50.250.50.8123456781012>14Xo0.20.250.30.350.370.40.410.430.440.450.460.470.480.50②薄板n/4圆弧的展开长度Y=n(r+Xo5)/2(2)或Y=n(R—5+Xo5)/2(3)薄板n/4圆弧的展开长度Y值可查表26得出。表26薄板1/4圆弧展开长度表（y）mm0.50.81.01.21.52.02.53.0内径外径内径外径内径外径内径外径内径外径内径外径内径外径内径外径11.872.012.122.1423.472.673.632.343.732.123.831.783.9835.064.265.303.955.343.735.413.515.625.856.1146.645.856.025.956.945.347.055.117.214.837.46一7.723.537.98一58.227.448.417.148.536.948.646.718.816.449.075.859.345.229.58一69.809.0110.008.7310.128.5310.248.3110.408.0310.687.4610.947.1111.19一711.3910.6011.5810.3111.7010.1211.829.9012.009.6312.279.0712.558.7212.807.98812.9612.1713.1611.8913.2911.7013.4111.4913.5911.2213.8710.6814.1510.3314.419.58914.5313.7414.7413.7414.8713.2914.9913.0815.1712.8115.4612.2715.7411.7816.0211.191016.1015.3216.3415.0516.4514.8716.5014.6716.7614.4017.0613.8717.3413.3817.6112.801117.6716.8017.9116.6318.0316.4518.1616.2518.3615.9818.6515.4618.9314.9719.2114.411219.2418.4619.4818.2219.601&0319.7417.8319.9317.5220.2317.0620.5316.5620.8116.021320.8120.0921.0619.7921.2119.6021.3119.4121.5119.1521.821&6522.1218.1622.3917.611422.3821.6022.6221.3622.7821.2122.0921.0023.0920.7323.4020.2323.7019.7523.9919.211523.9523.1724.1922.9824.3522.7824.5022.5724.6722.3124.9921.8225.3021.3425.5920.811625.5324.7425.7624.9825.9224.3626.0024.1526.2523.8926.5723.4026.8822.9327.1722.391727.1026.3127.3326.0827.4925.9227.6525.7627.8325.4728.1624.9928.4624.5128.7623.991820.6727.882&9027.6529.0627.4929.2227.3329.4127.0629.7426.5730.0526.1030.3525.591930.2429.4530.4729.2230.6329.0630.7928.9031.2028.6531.312&1631.7927.6831.9327.172031.8131.0232.0430.7932.2030.6332.3630.4732.5930.2433.0529.7433.2229.2733.5228.722133.3832.5933.6232.2633.7732.2033.9832.0434.1631.8134.6331.3134.8030.8836.2630.352234.9534.1635.1933.9335.3433.7735.5033.6235.7433.3836.2133.0536.3832.4436.8531.932336.5235.7436.7636.5036.9136.3437.6736.1937.3134.9537.7834.6337.9634.023&4433.522438.0037.313&3037.0738.4836.9138.6436.763&6036.5239.3636.2139.5436.5440.0235.262539.6638.8039.7038.6440.063&4840.2138.3340.4538.0940.8437.7041.1237.3341.6036.852641.2340.4641.4770.2141.6340.0641.7339.9042.0239.6642.4139.3642.6938.9143.1838.442742.8042.0243.0441.7843.2041.6343.3341.4743.5941.2343.9840.8444.2740.4844.7640.022844.3843.5944.6143.3644.7043.2044.9243.6445.1642.8846.5542.4145.8541.9146.3441.602945.9545.1646.1844.9246.3444.7046.5044.6146.7344.3847.1243.9847.4343.4947.7643.183047.5246.7347.7546.5047.9146.3448.0746.184&3045.9548.6945.9549.0145.0749.3444.76注:①内径项值为按内径r所查得的值:外径项值为按外径R值所查得的值.当弯曲半径的尾数为0.5时,则应按查表系数_||一吝加0.79.TOC\o"1-5"\h\zHYPERLINK\l"bookmark48"按薄钣折弯系数的计算方法：—''Y二a+b+x(4)式中:x=薄钣折弯系数.可查表27得出.表27薄钣折弯系数表(x)mm0.10.20.30.40.50.811.21.522.534568100.30.1250.100.070.0350-0.125-0.21-0.3-0.42-0.64-0.85-1.05-1.5-1.9-2.34-3.2-4.070.40.100.150.120.080.05-0.06-0.14-0.22-0.35-0.56-0.78-1.0-1.4-1.84-2.35-3.1-4.00.50.220.200.180.150.120-1.07-0.36-0.28-0.48-0.7-0.9-1.34-1.79-2.2-3.0-3.90.80.370.350.330.310.200.100.110.04-0.07-0.3-0.5-0.7-1.12-1.57-1.96-2.8-3.661.00.460.450.430.410.380.30.230.150.05-0.14-0.35-0.57-0.96-1.38-1.82-2.66-3.51.20.560.550.530.510.430.40.360.250.15-0.01-0.23-0.45-0.82-1.25-1.67-2.52-3.381.50.700.680.670.660.630.560.500.460.350.15-0.02-0.21-0.62-1.02-1.47-2.3-3.722.00.930.920.910.890.380.010.760.700.620.460.280.09-0.27-0.68-1.10-1.93-2.782.51.21.301.161.151.131.071.040.960.880.750.570.390.05-0.35-0.75-1.60-2.453.01.421.401.391.381.361.321.261.201.131.00.870.690.35-0.02-0.4-1.25-2.2注:粗折线之左其值为正，粗折线之右其值为负.在其角折弯时，对于比较厚的钢板和铝板的伸长系数略有不同•钢板折弯系数与铝板折弯系数的对比:可参见表28.表28钢板和铝板折弯系数对比表mm\厚材\度料、0.50.811.21.522.53钢板0.120.180.230.250.350.460.570.69铝板————0.280.400.600.901.051.25折弯零件展开长度计算 公式 小学单位换算公式大全免费下载公式下载行测公式大全下载excel公式下载逻辑回归公式下载 表:见表29表29折弯零件展开长度计算公式表4•折弯操作：正确选取凸凹模：根据工件的板厚，折弯角及折弯尺寸选取适当的凸凹模•此外还要遵守某些设备（如进口折弯机）对凸凹模使用的具体 规定 关于下班后关闭电源的规定党章中关于入党时间的规定公务员考核规定下载规定办法文件下载宁波关于闷顶的规定 •凹模开口选择普通折弯机标准为板厚的8倍数控标准为6倍。（薄板折弯大R时需按照展开料选择凹模）定位:根据折弯尺寸定位.确定折弯顺序：某些工件需折弯几道，因此必须选取正确的折弯顺序，才能折出每一道弯.试压:根据工件有有板厚和宽度估算适当的折弯压力，然后试压•试压后检查工件尺寸.调整参数:根据试压的结果调整定位，折弯压力等参数，直到折出合格的产品.整形:折弯后某些工件需要适当的进行整形，如折弯角的垂直度等.凸凹模选取原则：凸模圆角半径按图纸规定选取.凹模开口尺寸S按〈表30＞选取：3不锈钢材料压力计算P=650x（Sx1.5）2xL/V凹模选择需尽量用大点以减少受力表30凹模选择表V下模宽度R角度B最小尺寸板厚t0.50.81.01.21.51.822.5345678940.72.64010581.55.2205580115180101.76.5416595145210260122.7.85580120175215335162.710.46090130160250360203.41375105130200290520254.2168510516023041064030520N/mm2650xS2xL/V14019034054077035623170300460660407261502604005801030457.529230360520910508.5322103204808201230553004207501170折弯大R时尽量选择开口宽一点的下模以减少压力下模槽口的选择:数控折弯机V=Sx6，普通折弯机V=Sx8,文件更改记录更改单号更改标记更改项更改日期更改者折弯操作红色折弯操作4①9.24楚德年提出日期审核日期批准日期折弯参考系数表一•下表仅适用于本公司计算展开料用（适用材料:冷、热轧板）二.选择刀片时应严格对照下表选相应的槽宽三•计算展开长的方式例：5.0以上的板厚画图测量测量办法：折弯内引边板厚的0.4部分画线，得展开周长展开长=A+B-板厚*1.75（3MM以下）计算公式:A+B-C=展开长折锐角多减一个料厚、折钝角少减一个料厚公式中C表示直接系数，依照产品的板厚及R角，在下表中查找系数'、、板厚刀片T1T1.2T1.5T2.0T2.5T3.0T4.0T5.0直接系数槽宽直接系数槽宽直接系数槽宽直接系数槽宽直接系数槽宽直接系数槽宽直接系数槽宽直接系数槽宽R0.51.7661.9862.6793.28114.36134.66166.0824&2330R22.382.6283.07103.68124.53164.96216.3621&5232R32.6692.8293.25103.77134.8165.28216.3921&532R53.05123.16123.61124.35165.14215.59216.7224&6932R64.22154.39154.95185.37186.19186.63227.61229.3830R84.37184.55184.99185.48226.28226.67227.64309.6330R105.83225.84226.39226.82307.6307.82309.033010.233文件更改记录更改单号更改标记更改项更改日期更改者折弯操作红色折弯操作4①9.24楚德年折弯操作指导书添加折弯参考系数表及提高产口口质量注意事项9.30楚德年提出日期审核日期批准日期