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[技巧文章] 中望3D强大混合建模,让设计更高效,造型更美观

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发表于 2015-10-22 10:08 | 显示全部楼层 |阅读模式
本帖最后由 国产007 于 2015-10-22 10:10 编辑   ?3 P, A1 V' i

3 |9 N" m' [0 F* N6 u关键词:三维CAD 混合建模 中望3D 高效 造型% ?/ H+ ^: w* L" T
      企业进行产品设计的时候,往往需要使用三维CAD软件进行建模,来构建产品的造型,再进行一些细节的调整、打磨。因此,CAD软件的建模效果,对产品的造型有着重要的影响。从设计角度出发,优质产品的美观度,实用度都对设计有较高要求,而从产品生产的角度来看,优质的产品,在生产过程中能最大化地利用上所有的材料。
" s& n. a$ D% @/ }( h' {      当前,市面上各种三维CAD设计软件,在建模方面都有自己的特点,而常见的,主要有曲线建模、实体建模、混合建模这三种。其中,混合建模相对曲面建模和实体建模来说,是一个较新的概念。尽管每个软件对混合建模都有不同的解释,但笔者相信很多使用三维CAD设计软件的工程师,对这个概念还是比较清晰的。下面我们通过简单的对比,还有一些图例,来说明下混合建模跟另外两种传统的建模方式之间的区别。
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8 {$ g4 s" U2 ]# ^! {5 L      图1 传统建模与混合建模的区别; h% [( s4 v5 F7 @7 x

+ L3 l* r9 @. X( ^' i4 x% i      从上图可以看出,工程师在做产品设计的时候,要么先做线框,然后再设计面,这样一步步来完成整个产品的设计;或者选择直接通过实体的加减运算,来完成产品的设计。然而,现在消费者对产品外型的要求越来越高,企业为了占领市场,也会越来越注重产品的外型设计效果,而仅通过传统的设计方法,已经无法很好地去满足设计需求了。因此,混合建模的出现,则能让设计工程师在设计过程中获得更多设计的灵活体验,也补足了单纯的曲线建模或者实体建模的不足,从而设计出更好的产品。) q" _4 b, R; c! v, N1 v9 Z
     下图是一个简单的混合建模操作效果图,通过面与实体的修剪操作,从而更灵活、高效地获得造型效果。
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3 W! ^1 t9 j- Y. o* @/ e      图2 面与实体操作后的效果
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      中望3D作为一款专业高效的国产三维CAD设计软件,具有强大的混合建模功能。接下来,笔者将为大家介绍中望3D丰富的造型及曲面功能,是如何帮助设计工程师完成日益复杂的外型设计的。' F! {7 [, T' f0 b0 ]! f
      首先,我们来看看中望3D混合建模方面,有哪些相关功能。
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- t2 f4 ?" t7 {9 d" D! V      图3 中望3D混合建模的相关功能界面
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9 q7 w* X' T2 J* u! b/ E1 ]1 C1 \* I      通过上图所示的这些功能,可以实现:: T$ G; p& ]2 Z. w
      1、线框-面-产品的设计方法2 e4 ]: R8 u. H- z4 x: z2 b
      2、实体建模2 _4 C9 Z7 h) B6 U$ A
      3、混合建模
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" ^6 w) \- x2 s- r7 ]2 B      下面,我们结合简单的实例,重点来看看混合建模方面的功能效果。5 F8 V5 Q. D; {2 c
      【设计需求】:如下图所示,需要在后保险杠上做个车牌安装位;: F! F/ I7 z8 v( d  c. C# [

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       图4 需设计车牌安装位的后保险杠# C. A9 R/ b7 L
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      【常规设计】:一般要通过“面”功能来做出车牌的安装位(如下图),然后使用“面修剪”或者“合并”等功能,把车牌和后保险杠这两个面组合在一起。这种方法操作步骤繁多,且实际操作起来,效果也不够直观,影响设计工程师的工作效率。
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+ A9 q$ a2 R! @  _4 s; g      图5 车牌安装位                                  图6 组合后的后保险杆 ' m0 B* b, L( E

$ n( D2 a  R% d' v- ]     【中望3D解决方案】:通过实体与曲面做布尔运算,即可直接生成车牌安装位。具体操作时,只需要创建好后保险杠曲面和车牌安装位实体,然后点击造型模块下的组合功能(即下图红框中图标),进行曲面和实体的布尔运算,即可直接生成车牌安装位的效果,一键即可到位。# A$ |; }& x+ ^9 D
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      图7一键到位,中望3D混合建模操作界面
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      图8 生成车牌安装位后的效果图0 \& w; p# m: f7 j" q

8 v/ X% h: m/ @      中望3D可以高效地实现曲面对实体的修剪,也可以使用实体对曲面进行布尔运算来达到我们所需要的,更高的设计要求,与此同时,混合建模的相关功能,还能够设计工程师更加直观、高效地去完成各种造型设计。
5 g, y  L1 Y, d* {" [/ }      全新的三维CAD/CAM软件中望3D 2015 SP版已于9月22日发布,SP版全面优化升级,整体性能更稳定,设计效率更高。更多详情,欢迎访问中望3D官方网站:www.zw3d.com.cn

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发表于 2015-10-23 08:38 | 显示全部楼层
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