Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Unicam/fujicam

Greg

#20408

Unicam/fujicam | 18 June, 2002

Hello all,

I support the floor issues and it seems that a vast majority of our connecters always place off in the x or y. We are using IP3's with unicam software. Has anyone else run into this and what was the fix.

Thanks Greg

reply »

mantis

#20410

Unicam/fujicam | 18 June, 2002

Well if the Part Data isint correct then your placement position wont be right especially if there odd for connectors.You should examine the image on the ip3 and determine wether the machine has found the centre of the part.Also u might want to check wether there is slippage on the nozzle when being transfered.Maybe pre-rotate before placement. Regards,

reply »

#20461

Unicam/fujicam | 21 June, 2002

Hi Greg.

FujiCam has two ways of calculating the placement coordinate for a component. - The "FujiCam/Unicam way": calculating component origo as the center of the designed component pads. - Use the PCB designers part origo which could be center of pin 1, package center, land pattern center etc.

Unfortunately you have to choose one or the other for the job. You cannot set it up per component package ! You can choose the second way by check marking the bottom choice in the program generation window. Right now I can�t think of the neame for the choice.

You can see the difference of the origo coordinates by going in the Part info function. You will see two sets of coordinates.

So to avoid tweaking you must ensure that the PCB designer uses the correct origos for the different packages that fits your machine (Fuji IP3).

On the the IP-3 you can in most cases choose a vision type that either center the component from the part body or the part including the non symetric lead formation. It most fit to the part origo chosen in the BCB design.

I hope this helps !

Regards Brian

Check out my site: http://www.smtinfocus.com

reply »

Greg

#20569

Unicam/fujicam | 2 July, 2002

Thanks brian, we do use "shape origin". Yet the connectors need constant tweaking. There is no slippage from the nozzle either. So what you are saying its possible that the designers may be using unicam center and we are using shape center? Is it possible a problem with fuji vision 100? Is there a better vision number for connectors? We have occasionally used vision 105 but with inconsistent result (will work for 1 job but be off with same part on another customers job).

Thanks Greg

reply »

#20574

Unicam/fujicam | 2 July, 2002

Hi Greg.

As a subcontractor, not able to control the part design, you are in trouble.

I�m not sure, but maybe use of the graphical shape library could be a solution. This library can be used to ensure correct zero degree rotation and it migth be possible to move the origo as well.

Maybe it was worth investigating ?

Otherwise tweeking will be necessary!

Regards Brian

www.smtinfocus.com

reply »

mantis

#20594

Unicam/fujicam | 3 July, 2002

If the designer has used pin one as origin surely all parts on the board would have pin one as orign and all parts would be off be same amonunt.If u like you can send a copy of your PD and i would be happy to review it for you and see if theres anything a miss.We have been placing all sorts of connectors with little trouble. Regards, Mantis

reply »

SMT Custom Nozzles

Panasonic OEM Solutions