CAXA实体 - 实例分析 - 叶轮造型

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4）单击草图开关退出草图,应用直线命令,选择【两点线】、【正交】、【点方式】,画出一根轴线(和轮廓线的左边重合),如图6所示。

<img src="attachments/dvbbs/2004-5/20045620391160396.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-5/20045620391160396.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

<img src="attachments/dvbbs/2004-5/20045620401825375.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-5/20045620401825375.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

图6 进行旋转增料

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（5）按F8切换到轴测图。单击特征【增料旋料】,弹出如图6所示的对话框后拾取草图0和轴线然后单击【确定】,完成旋转增料得到圆底盘(如图7所示)。


<img src="attachments/dvbbs/2004-5/20045620431020107.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-5/20045620431020107.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

图7 得到底盘造型

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3.构造叶片放样增料用的轮廓线

　 （1）旋转显示底盘,拾取底盘底平面(图光标出现平面符号),按F2进入草图状态。

<img src="attachments/dvbbs/2004-5/20045620455345821.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-5/20045620455345821.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

图8 选草图基准平面

[此贴子已经被作者于2004-5-6 20:47:10编辑过]

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2）单击【曲线投影】按钮 ,根据状态栏中的提示拾取XY平面上的一条圆弧线,得到草图上的投影线(轮廓线),图9箭头所指的弧线。

<img src="attachments/dvbbs/2004-5/20045620484859439.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-5/20045620484859439.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

图9 向草图面投影曲线

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（3）单击 ,选择【等距】、输入【距离】=4，拾取上一步得到的投影线,等距方向指向中心,结果如图10。


<img src="attachments/dvbbs/2004-5/20045620512943025.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-5/20045620512943025.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

图10　画出等距线

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（4）单击 ,选择【两点线】、【单根】、【非正交】、【点方式】将等距线的两端用连线封闭（如图11所示）。检查草图环是否封闭,如封闭,就进入下一步。


<img src="attachments/dvbbs/2004-5/20045620535035926.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-5/20045620535035926.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

图11 将等距线封闭

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5）旋转显示底盘,点击底盘顶平面(如图12光标出现平面图标),按F2进入草图。


<img src="attachments/dvbbs/2004-5/2004562057659182.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-5/2004562057659182.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

图12 选草图平面

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单击 ,根据状态栏中的提示拾取XY平面上的令一条圆弧线,得到草图上的投影线(轮廓线),图13光标箭头所指的弧线。

<img src="attachments/dvbbs/2004-5/20045620593494984.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2004-5/20045620593494984.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

图13 生成草图轮廓线

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待续