YesAX V3.1.2 - Software User Manual.pdf - 第77页
3D Recipe Creatio n 7-7 7.3.9 Step9: Adjust Offse t for the 3D Sit es After board height is established, step through each of the 3D sites and use the Edit 3D Site dialog to adjust the offset parameters for each site. Yo…
7-6 3D Recipe Creation
7.3.4 Step4: Create Test 3D Sites and Verify Board Thickness
This step is very important for complex boards when a lot of surface parts (resistors and
capacitors) on both top and bottom sides need to be inspected. For some simple boards this step
is optional. Manually add one or more 3D sites and make sure the Bottom button in the Edit 3D
Site dialog brings you to the correct surface slice at the bottom side of the board. If not, adjust
the board thickness parameter in the Video Parameters dialog.
7.3.5 Step5: Import Centroid CAD for BGA parts
The CAD conversion utility creates two sets of YCD files, Full and BGA only. Import the BGA
only file. There is no need to set the proper part size for the BGA parts. The part size will be set
in the next step when YPC CAD is imported.
Press the “Skip Mark” button.
In this step all we need is to have small purple boxes to show the centroid of the BGA parts.
7.3.6 Step6: Import Pin CAD, and merge Pin library Data
The Pin CAD (YPC file) contains the position for each pin (solder joint) of every part. During
the process you can merge the Pin definition from the Pin library with the pin location and name
from the YPC file. Merging the Pin definition is highly recommended, even if you cannot find an
item in the pin library that matches your part exactly. This is because once a link is established
between the part and the pin library, future changes will be a lot easier.
NOTE
you CANNOT use any solder with the BGA Solder algorithm in any item in the
Pin library.
7.3.7 Step7: Walk Thru and Create 3D Sites for the BGA Parts
Assuming you completed step 6 accordingly, this step would create the 3D sites for BGA parts
almost automatically. Select Walk Thru Parts w/o Sites in the List View Selected pop-up menu.
At each part, select Create 3D Sites, From Parameter dialog.” to select the proper parameters.
Then press OK. After the sites are created, select Update from the part menu to propagate the
3D sites by PN or Package.
After finishing the walk through, select Re-Capture All Sites from the pop-up menu of the 3D
Control dialog to convert all the Future Sites to normal 3D sites.
7.3.8 Step8: Add Laser Height References
One laser height reference can be added with one mouse click.
Select Add Laser Reference.. from the pop-up menu of the 3D Control dialog.
After all the laser references are added, select “Profile Board Height” from the same pop-up
menu.
3D Recipe Creation 7-7
7.3.9 Step9: Adjust Offset for the 3D Sites
After board height is established, step through each of the 3D sites and use the Edit 3D Site
dialog to adjust the offset parameters for each site. You may be able to use the Sync. Site
Parameters function to speed the process by synchronizing the offset for all sites under one part.
7.3.10 Step10: Import Full Centroid CAD and train the rest of the parts
Select “Recipe Save As” prior to performing this step.
Nordson YESTECH does not recommend 100% inspection using AXI. Many parts can be more
effectively inspected using AOI.
Please be aware of two features specifically designed for AXI CAD import:
First you can now import part to be trained on 3D slice directly, provided the sites are
present before you start the import process. Secondly, please do not forget, you can add
Future Site while you are importing and training new parts. When importing and train
parts directly to 3D slice the software appends “_3dt” and “_3db” to the part numbers and
packages, this way they are separated from 2D parts during library updates.
Here is one strategy you can use, import and train all the parts that can be inspected in 2D, when
you see a part that cannot be inspected in 2D, press the “Skip Part” button to skip it. Finish
training all the 2D parts for both sides. Add Future Sites for parts not trained, capture image set
for the future sites, and then re-import the same YCD file (or files) and train parts to the 3D
slices.
7.3.11 Step11: Fine Tune the Recipe
From the Recipe Option dialog you can turn on and off 3D inspection, using this feature you can
focus on fine tuning the 2D inspection first. For 3D tuning, you can skip all parts and unskip only
one part at a time to work on. (ListView, Part List Page, pop-up menu). Also there is a feature to
re-sequent the 3D site to speed up the inspection. There is a similar feature to re-sequent laser
height reference as well.
7.4 Creation Process When There is a Need to Minimize Machine
Time
7.4.1 Step1: Prepare CAD Data
This is an offline step. Refer to 7.3.1 Step1: Prepare CAD Data.
7.4.2 Step2: Determine Which Side Face Up
This is an offline step. Refer to 7.3.2 Step2: Determine Which Side Faces Up.
7.4.3 Step3: File, New Board
This step has to be done on the machine, to minimize machine time you should capture a 25% or
50% overlap image set with Top View, 1 inch X-ray view and may be ½ inch X-ray view.
7-8 3D Recipe Creation
7.4.4 Step4: Create Test 3D Sites and Verify Board Thickness
This step also has to be done online. Refer to 7.3.4 Step4: Create Test 3D Sites and Verify Board
Thickness.
7.4.5 Step5: Import Centroid CAD for BGA parts
This step can be done offline using the image set captured in 7.4.3 Step3: File, New Board.
7.4.6 Step6: Import Pin CAD, and merge Pin library Data
This step can also be done offline using the image set captured in 7.4.3 Step3: File, New Board.
Refer to 7.3.6 Step6: Import Pin CAD, and merge Pin library Data.
7.4.7 Step7: Walk Thru and Create 3D Sites for the BGA Parts
This step can be done mostly offline except you cannot do “Re-Capture All Sites” which will be
done in step 9. User should utilities the “Future Site” feature of the software to add 3D sites onto
the 2D image set.
7.4.8 Step8: Add Laser Height References
This step can be done mostly offline except you cannot do “Profile Board Height” which will be
done in step 9. The “Add Laser Reference…” feature allows user to add laser reference onto a
grid image set captured in 7.4.3 Step3: File, New Board.
7.4.9 Step9: Capture Inspection Path Image Set
This step needs to be done on the machine. The feature in 3D Control dialog’s pop-up menu
“Capture IS for Offline Prg” is specially designed for this step. If you are given more than 1
board for initial recipe creation, you can capture one image set per board given in this step.
7.4.10 Step10: Adjust Offset for the 3D Sites
This step can be done offline. Refer to 7.3.10 Step10: Import Full Centroid CAD and train the
rest of the parts.
7.4.11 Step11: Define 3D Inspection and Fine Tune the Recipe Offline
With the inspection path image sets captured in section 7.4.9 user can define the 3D Inspection
boxes and fine tune the recipe base on the image set. This could be very time-consuming
depends on the complexity of the recipe. Unfortunately, this step can be done offline using the
image sets.
7.4.12 Step12: Fine Tune the Recipe
A lot of the fine tuning can be done offline using the image set, the rest will have to be done on a
machine.