飞行器CADCAM技术大作业18号零件Word文件下载.docx
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首先,通过拉伸得到“毛坯”,结果如下:
图3拉伸基体
接着,通过“拉伸”方法,并选择“求差”选项,建出上层廓形。
图4拉伸切除得到上层外廓
然后,再次采用“拉伸”特征,并求差,切出圆弧槽。
图5切出圆弧槽
最后,采用“孔”特征,直接在上表面上插入两个φ12mm深30mm的钻孔。
至此,建模过程完毕。
图6插入孔
3.数控代码生成
点击UGNX7.5软件界面左上角的“开始”,将软件环境由之前的“建模”切换到“加工”,在弹出的加工类型选项框中选择“general_cam”和“mill_contour”,软件即进入如下的加工界面:
图7进入加工界面
点击下方的“几何视图”,点按“MCS_MILL”前的“+”号,展开后即可看到“WORKPIECE”,右键单击,在弹出的菜单中选择“编辑”,即可进入如下“铣削几何体”设置界面:
图8铣削几何体设置
从上到下依次制定加工对象、设置毛坯尺寸,设置毛坯时点选“自动块”方式,可以自动以长方体包络当前零件模型,考虑上表面需要进行铣削,留出加工余量,所以“ZM+”设为2mm。
点击下方的“加工方法视图”,可见软件已自动识别特征并排定加工工序:
先粗铣,再半精铣,然后精铣,最后钻孔,但是由于该零件不需要精铣,所以我们可以从加工工序中删除“精铣”工序。
图9加工方法视图
进入“加工”模式时之所以选择“MILL_CONTOUR”,是因为零件的主要加工方法都是z向铣削廓形,但是为了保证上表面粗糙度和深度尺寸的准确度,需要先对毛坯上表面进行平面粗铣和半精铣,所以右击“未用项”→“插入”→“操作”,弹出如下“创建操作”界面:
图10创建操作
选取“mill_planar”,具体加工类型选择“face_milling”,点确定后自动进入加工参数设置界面,刀具选择直径10mm的端铣刀,因为不用换刀,所以直接在工序内设置一步粗铣,铣削量1.5mm,一步半精铣,铣削量0.5mm,生成的刀轨如下图:
图11面铣刀轨
粗铣上层外廓形,加工方法为“solid_profile_3d”选取直径12mm端铣刀,深度和厚度方向各进给6次,余量1mm,生成的刀轨如下所示:
图12外廓刀轨
粗铣圆弧槽,加工方法为“cavity_mill”,余量为1mm,刀具为直径8mm端铣刀,选取“深度优先”以便先加工完一个槽后再进入下一个槽的加工。
刀轨如下:
图13弧槽铣刀轨
半精铣上层外廓,为减少换刀次数,仍使用弧槽铣削的刀具,侧向的进给量设置为0.5mm,进刀2次;
深度方向余量0.8mm,一次深切即可。
生成的刀路轨迹如下:
图14半精铣外廓刀轨
最后是钻两个直径12mm的孔,选取直径12mm的直柄麻花钻钻出两个孔即可,刀轨如下:
图15钻孔刀轨
至此,数控加工的所有工艺参数设置完毕。
4.生成的数控代码
切换到“程序顺序视图”,可以看到自上而下列出的加工工序,在后处理前,工序列前面有一个黄色的感叹号。
后处理生成数控代码后,黄色感叹号会变成一个绿色的对号,表示处理完成。
图16程序顺序视图
右击某一个工步,点选“后处理”,即可生成相应工步的数控加工程序,选择所有工步后右击,点选“后处理”,即可得到整个加工过程的数控程序代码。
为方便查看,以下按加工工序列出相应数控代码,由于代码行数太多,只列出前20行和后20行。
铣上表面
%
N0010G40G17G90G70
N0020M00
N0030G0X2.0788Y-1.7369S0M03
N0040G43Z2.874H00
N0050Z2.5492
N0060G1Z2.4311F9.8M08
N0070X1.8469
N0080X-1.8469
N0090G2X-1.9546Y-1.5053I.4689J.3589
N0100G1X1.9546
N0110G3X1.9685Y-1.378I-.5766J.1273
N0120G1Y-1.2737
N0130X-1.9685
N0140Y-1.0421
N0150X1.9685
N0160Y-.8106
N0170X-1.9685
N0180Y-.579
N0190X1.9685
N0200Y-.3474
/*此部分略去*/
N0650X-1.9685
N0660Y.3474
N0670X1.9685
N0680Y.579
N0690X-1.9685
N0700Y.8106
N0710X1.9685
N0720Y1.0421
N0730X-1.9685
N0740Y1.2737
N0750X1.9685
N0760Y1.378
N0770G3X1.9546Y1.5053I-.5905J0.0
N0780G1X-1.9546
N0790G2X-1.8469Y1.7369I.5766J-.1273
N0800G1X1.8469
N0810X2.0788
N0820Z2.5
N0830G0Z2.874
N0840M02
粗铣外廓形
N0030G0X1.378Y2.3425S0M03
N0040G43Z2.7559H00
N0050Z2.3228
N0060G1Z2.2047F9.8M08
N0070G2X1.4309Y2.3401I0.0J-.5708
N0080G1X1.5667Y2.3267
N0090X1.7481Y2.2716
N0100X1.8281Y2.2289
N0110G2X1.9838Y1.9838I-.1392J-.2604
N0120X2.2273Y1.831I-.0153J-.2949
N0130G1X2.275Y1.737
N0140X2.3267Y1.5667
N0150X2.3403Y1.4278
N0160G2X2.3425Y1.378I-.5686J-.0498
N0170G1Y-1.378
N0180G2X2.3398Y-1.4339I-.5708J0.0
N0190G1X2.3267Y-1.5667
N0200X2.2716Y-1.7481
N5420G0Z2.7559
N5430X2.277Y2.1217
N5440Z1.6929
N5450G1Z1.5748
N5460X2.0655Y2.0086
N5470G3X1.9685Y1.6889I.1113J-.2084
N5480G1X1.9975Y1.6346
N5490X2.0357Y1.5088
N5500X2.0459Y1.405
N5510G2X2.0472Y1.378I-.2742J-.027
N5520G1Y-1.378
N5530G2X2.0459Y-1.405I-.2755J0.0
N5540G1X2.0357Y-1.5088
N5550X1.9975Y-1.6346
N5560X1.9685Y-1.6889
N5570G3X2.0655Y-2.0086I.2083J-.1113
N5580G1X2.277Y-2.1217
N5590Z1.6929
N5600G0Z2.7559
N5610M02
铣弧槽
N0020G91G28Z0.0
N0030T00M06
N0040G0G90X-.1098Y-1.259S0M03
N0050G43Z2.8346H00
N0060Z2.5591
N0070G3X-.1417Y-1.1693Z2.3465I.1098J.0897K.038F9.8
N0080G1X0.0M08
N0090G3X.8064Y-.8467I0.0J1.1693
N0100X.7684Y-.8068I-.019J.0199
N0110G2X-.7684I-.7684J.8068
N0120G3X-.8064Y-.8467I-.019J-.02
N0130X0.0Y-1.1693I.8064J.8467
N0140G1Y-1.3268
N0150G3X.915Y-.9608I0.0J1.3268
N0160X.6598Y-.6928I-.1276J.134
N0170G2X-.6598I-.6598J.6928
N0180G3X-.915Y-.9608I-.1276J-.134
N0190X0.0Y-1.3268I.915J.9608
N0200G1Y-1.1693
N1860G2X.7684I.7684J-.8068
N1870G3X.8064Y.8467I.019J.02
N1880X0.0Y1.1693I-.8064J-.8467
N1890G1Y1.3268
N1900G3X-.915Y.9608I0.0J-1.3268
N1910X-.6598Y.6928I.1276J-.134
N1920G2X.6598I.6598J-.6928
N1930G3X.915Y.9608I.1276J.134
N1940X0.0Y1.3268I-.915J-.9608
N1950G1Y1.1693
N1960Y1.3583
N1970G3X-.9367Y.9836I0.0J-1.3583
N1980X-.6381Y.67I.1493J-.1568
N1990G2X.6381I.6381J-.67
N2000G3X.9367Y.9836I.1493J.1568
N2010X0.0Y1.3583I-.9367J-.9836
N2020G1Y1.2008
N2030Z2.1811
N2040G0Z2.8346
N2050M02
半精铣外廓形
N0030G0X1.2352Y2.126S0M03
N0050Z1.6929
N0060G1Z1.5748F9.8M08
N0070X1.2346Y2.1126
N0080G3X1.3854Y1.9487I.1573J-.0066
N0090G2X1.3866Y1.9486I-.0074J-.177
N0100G1X1.4339Y1.9463
N0110X1.4894Y1.9381
N0120X1.5437Y1.9244
N0130X1.5965Y1.9056
N0140X1.6472Y1.8816
N0150X1.6952Y1.8528
N0160X1.7402Y1.8194
N0170X1.7818Y1.7818
N0180X1.8194Y1.7402
N0190X1.8528Y1.6952
N0200X1.8816Y1.6472
N1560X-1.8874Y1.589
N1570X-1.8642Y1.6379
N1580X-1.8364Y1.6843
N1590X-1.8042Y1.7277
N1600X-1.7678Y1.7678
N1610X-1.7277Y1.8042
N1620X-1.6843Y1.8364
N1630X-1.6379Y1.8642
N1640X-1.589Y1.8874
N1650X-1.538Y1.9056
N1660X-1.4855Y1.9187
N1670X-1.432Y1.9267
N1680X-1.3857Y1.9289
N1690G2X-1.378Y1.9291I.0077J-.1572
N1700G1X1.378
N1710G3X1.5354Y2.0866I0.0J.1575
N1720G1Y2.0889
N1730Z1.6929
N1740G0Z2.7559
N1750M02
钻孔
N0040G0G90X-1.378Y-1.378S0M03
N0050G43Z2.4803H00
N0060G81Z1.0392R2.4803F9.8
N0070X1.378Y1.378
N0080G80
N0090M02