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Can someone help me on correcting CAD information on Univesal mc

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#47044

Can someone help me on correcting CAD information on Univesal mc | 28 January, 2007

hi to all. I am new in this forums. but I like it too much. i am working on universal machine but sometimes i had a problem when the CAD data ( X,Y,Theta ) information are not correct, I adjust them manually in Board Enhanced Setup, my question is there any other method to do that by just correcting thr first component ??

best regards and wishes.

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#47047

Can someone help me on correcting CAD information on Univesal mc | 28 January, 2007

Welcome Sami. I am unfamiliar with Universal but in general....

If all of your placement is out the same amount in the same direction then your fiducial data is probably incorrect. This can also be caused by a machine offset problems.

If all or some of your placement is out in different directions then you have probably been supplied with "tweaked" data. Although this can also be caused by a machine offset problems.

If you get it all going properly and two months later it's no good on the same pcb with the same data then you probably have machine problems.

Can you get the original CAD data and compare it with the placement file?

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#47049

Can someone help me on correcting CAD information on Univesal mc | 29 January, 2007

thanks I haven't the same shift in all the components, that's why I need to correct them one by one and this takes a lot of time. I am searching in the Software of the machine if there is any way to change just one parameter to correct all the data then I can change the non correct ones. anyway thanks for your interest. b.r.

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#47054

Can someone help me on correcting CAD information on Univesal mc | 29 January, 2007

Hi Sami, A little more detailed information would be good,as it perhaps makes it easier for us to point you in the right direction of the root cause of your problem. And then you should fix that, rather than tweaking your programs around. 1. What type of UIC machine, head configuration, cameras and UPS s/w? 2. Is the machine calibrated? If yes, are you sure that there has not been a head/spindle crasch or something that could have screwed up things? 3. "Sometimes i had a problem when the CAD data (X,Y,Theta ) information are not correct" How did you determine that the cad data is wrong? 4. "I haven't the same shift in all the components". How much is the components shifted in x,y and theta (+ or - and degrees). Is it really on all components and 3 axis? 5. Have you set up the cad import file format correctly, so it doesn't skip the last digit in the coordinate columns? Compare the placement coordinates with your original cad-file (Just as Darby said). 6. Is this a panelized board with different orientation of the boards or just a single board? 7. Have you activateted the global board or global circuit fiducial correcction properly? (It is possible to have the fiduicials in the program, but no board correction activated)!! 8. Sometimes it is good to have a known good test board with a known good program that has not been tampered with. Using this test board and place a few components on double sided sticky tape, using all heads and all spindles/tooling will give you a hint if the machine needs re-calibration or if the product program(s) is wrong. 9. Is the pcb clamped properly and board support pins is in place? 10. Proper nozzle size is used for the component packages of yours? 11. If you conclude that there might be a machine problem: try to determine if you can "see a pattern" of the mis-placed ones; for ex. all componets from a certain feeder, head, spindle, nozzle, tooling, camera, etc. 12. It is possible to use the "Search & Replace" in the editor in variuos ways. Also change or move selected components, but only if it is the same amount and direction you want to set the offset. 13. Is this the only product you are having problem with or is it all of them, I mean if you have to tweak the coordinates on all your products?

Keep us posted and Good Luck. /Sincerely

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#47064

Can someone help me on correcting CAD information on Univesal mc | 29 January, 2007

You are probably using a GSM since you mentioned "enhanced board setup".

1.- Your CAD data. It works better when all your data uses bottom left of the PCB as a board origin ( BO ). If my CAD does not use bottom left as a BO, then I edit the data in excel or any program/ software of your choice.

That should be your first step, that way you will have a "standard" way of creating your programs.

Anyway, if you know how much you need to move all your placement in one move, do this:

1.- Go to PRODUCT EDITOR, open your program to be edited. 2.- Go to COMPONENTS, then GRAPHIC. 3.- Select EDIT, then select ALL COMPONENTS. 4.- Select EDIT then select MOVE 5.- A popup window will appear, your options are X, Y, Theta. Input your numbers and press OK. All components will move the distance you specified.

Don't forget to SAVE it and RELOAD.

Hope it helps.

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Sami

#47140

Can someone help me on correcting CAD information on Univesal mc | 1 February, 2007

thanks to all . I am using GSM Genesis machines. I am also using using a single board without any offset. When I tried to test the first board for a new product, I can see the shiffting in the placement of some components. Yes I know that the default zero is the left down corner, but all what you have said is ok for me . Another question, Is there any way to clean the nozzles of my GSM machines ( because sometimes the reject rate is too big ) and this is due to cleaning of the nozzles I think.

a freind has told me to use Izopropyl Alcohol . but I do't know what is the adequate soluble to use.

I need to share all what you have as experience with me. thanks a lot to all of you. best regards and wishes.

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#47147

Can someone help me on correcting CAD information on Univesal mc | 1 February, 2007

The reject rate of yours could be a number of reasons. 1. Which component types are rejected? 2. From a particular nozzle? 3. If the rejected part will be dropped on the reject belt or reject bin; it suggests that there is a problem with the component definition in the comp. database. You should run a component recognition test from whithin the comp. database of those particular trouble components. Set All the values right and pay extra attention to lighing lev and type. 4. If the nozzles is clogged with dust etc. or if You have been using wrong nozzle size; then there should be components all over inside the machine and around the feeders. If the components drop off the nozzle after camera inspection, it could lead to solder paste in the nozzle. Do You find components randomly on the board as well?

Isopropyl Alchohol does the trick in such case, unless the paste has been around in the nozzle for a long time so it has become dry and hard.

A little more detailed information is needed about your reject problem. /Sincerly

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#47208

Can someone help me on correcting CAD information on Univesal mc | 5 February, 2007

Sami, Have you contacted Universal directly for assistance? You can contact your local service team, or contact them at GSMTechs@uic.com.

There is also a set of online "Knowledge bases" that are at your access 24/7 if you are a UIC registered user.

regards, T.Vick

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