can anybody help me for to spilit core cavity in unigraphics or pro/e

sumithkarun

4 Aug, 2012 04:57 PM

I am not that comfortable with Unigraphics, but i could help you with Creo parameteric(Latest version of Pro E), I took a simple component to explain the procedure but it needs a good understanding of moulding process to become a real expert in Core Cavity split. should understand the concepts of different parting surfaces.
Dont worry! it is not a rocket science ,

1. Step 1:

   For this tutorial ,I have created a simple cap shaped plastic component. You can use any of the component. Every component has unique parting surface
   

   

2. Step 2:

   After creating a component, Create a new file -(we need to create a manufacturing file, and opt for mould cavity on the right column) as shown in the image
   

   

3. Step 3:

   You could see "pull direction" arrows in the screen, General practise is the mould opening should be in the direction of those arrows. For that you need to assemble the component in this assembly and orient the component properly so that you can get mould opening correctly.
   You need to click -
   1-reference model
   2-Assemble reference model

   As shown in the image.
   

   

4. Step 4:

   Once you assemble the component , a small window pops up , asking for creation of reference model , you can opt for "same model". and click ok.
   The reason why we need to create a reference model is for including the shrinkage .If we create a new reference part and then add shrinkage, the shrinkage will be a part of the new reference part else it will be a part of parent model.
   

   

5. Step 5:

   Next step is to add shrinkage,
   Depending upon the plastic material shrinkage varies, In this example I have put 2% (scaling faction should be 0.02). Follow the image to add shrinkage. I have added step no on the image
   

   

6. Step 6:

   Next step is to create a work piece.
   Work piece is nothing but outer size and shape of your mould. Logic behind core cavity splitting is that , work piece is initially cut using the part and this volume is split to core / cavity using parting surface.
   for creating an automatic workpiece please follow the steps in the image
   

   

7. Step 7:

   Next step is to create parting surface
   In this example , we need only 2 parting surfaces (using "fill" option)
   Click "parting suface"--- "fill"--- use the edges the hole to create flat surface as shown in the image
   

   

8. Step 8:

   Next step is to create 2nd parting surface
   Follow the same procedure of the previous step and create a parting surface as shown in the image
   

   

9. Step 9:

   Next step is to split volume to core and cavity
   Follow the steps in the image, and continue to next step
   While volume spliting you need to select the workpiece as volume to split and click done
   

   

10. Step 10:

    Next step is to select the parting surface for spliting
    For defining the parting surface you need to select the 2 parting surface which you have already made .
    

    

11. Step 11:

    Next step is naming the split volume to CORE and CAVITY
    In the image you can see that i have named male part as core
    

    

12. Step 12:

    Next step is naming the split volume to CORE and CAVITY
    In the image you can see that i have named female part as cavity
    

    

13. Step 13:

    Next step is to convert this volume to part
    In this step you are converting the volumes (core/cavity) to parts which has all the standard datum plane and CSYS
    Please follow the steps sequence in the image