模型图纸

Hi @HaoTian_333 

Thank you for your question! 

I’d like to recommend to bring more details and context to your initial inquiry. For example:

• How are you currently associating the 3D model with drawings—manually, through a specific Windchill action, or via CAD integration?
• When you say it “will not be associated” if two drawings are linked, do you mean Windchill prevents the association, or the system behaves unexpectedly?
• Is your goal to enforce a one-to-one relationship between a 3D model and a drawing, or are you trying to understand Windchill’s default behavior?

Please add screenshot(s) to better understand what you are trying to do in your process. 

Please refer to this guideline to make your questions more likely to receive a quick and useful answer. 

This will increase your chances to receive meaningful help from other Community members. 

Here's what a good question for Windchill looks like. 

Thank you for your participation and please let me know if you need further assistance! 

Best regards,