PLM集成3D CAD的开发范例

xiao_chen

PDM/PLM软件 对3维CAD系统的集成,
对于CAD原厂之外的PLM方案提供商 而言;称得上是Achilles' Heel；
因为 发布CAD 程序接口有限或完全不开放， 无以识别/处置图纸之间的层级/装配关系，
进而成为市场推广的软肋:

在PLM用户存装配图时，若打包其组成零件图，则有数据冗余；
若PLM将装配图 与 零件图文件做相同处理则不一定能打开单纯的 装配图的  （可能会提示找不到零件图）；

为此，若没有很好的 CAD的集成， 工程师在PLM系统中无法对其3d设计图的集合做快速的操作；
极端情况下，需要Designer Engineer将图纸Moduel/Drawing逐个或批量的签出/签入 等烦琐的操作。。。

      
为此，除 源于CAD提供商 的Windchil、TC，ENOVIA等少数方案之外；
PDM/PLM项目中；客户经常要求针对专门的CAD平台，开发专门的MCAD Connector；


以下是一个第三方 PLM集成 CATIA 的范例；
3D MCAD ： DS CATIA V5
PLM： AGILE   PLM 9.0
开发语言：TCL，JAVA

思路：
In keeping with Agile standard methodology, which is that all representations of a given CAD model are stored together in a common Document record, both the native CATPart or CATProduct file and the corresponding CGR file will be stored in a common Document.  


The association between the CATProduct file and its corresponding CGR file is made through the new command “Save with CGR”.  Once this has been done once, Agile will know that the two are associated.  After that point, when the user uses the Load command to bring files from Agile into CATIA, the integration will use either the CGR or the native CATProduct, depending on whichever one was last saved (in its parent assembly) into Agile.  This is “flagged” by a relationship attribute, denoted by the yellow bubble in figures 1 through 3.  When the value is set to CAX-ACC by the Save command, upon subsequent loads the native CATProduct file will be loaded.  When the value is set to CAX-ACC-CGR, subsequent Load commands will load the CGR instead.  Note that this flag is set automatically by the Save command and should not be set manually by the user, or data corruption may result.



Notice：
1. 为准确而引用 原文, 故不作翻译,
2.有Catia开发需求,请不吝联系;
3. 转发请注明出处；

In order to provide this functionality, the existing Save and Load commands are modified, and four new commands will be provided as follows:
Insert CGR – Adds a CGR model to the current CATProduct
Save with CGR – Saves the CGR file along with the native CATPart or CATProduct file, and establishes the relationship between them
Open Native File – Opens the native CATPart or CATProduct files for the selected CGR file(s)  
Reload CGR – Update the selected CGR file(s) with the latest version from PLM