Electronics Forum | Wed Jun 15 00:33:11 EDT 2005 | Frank
You didn't state if you are using all CAD data or not. If you are not using any CAD data then all bets are off. If you global fid XY data and all your placement XY data are all from CAD data, but you are manually teaching your local fids, then they
Electronics Forum | Thu Aug 30 13:24:04 EDT 2001 | dougt
James The machine will do it. If the machine calibration is questionable take the time and recalibrate it. Use local fiducials and place it as one of the last parts.
Electronics Forum | Tue Jun 14 07:33:58 EDT 2005 | bobpan
If the placement is off the same amount everytime...(which I suspect it will be)...just adjust your placement co-ordinate for the part and be done with it.
Electronics Forum | Tue Jun 14 08:44:42 EDT 2005 | jdengler
What machine are you running. Someone here can probably help you more if you give us more detail. Jerry
Electronics Forum | Thu Oct 19 12:35:32 EDT 2006 | wrongway
have not given much thought on this i use old amistar machines as far as i know the fids are just referances to where the part is i dont think they would have to be centered up with the part as long as they are in the same place from board to board
Electronics Forum | Thu Oct 19 14:21:34 EDT 2006 | sliebl
Also, with our CS machines, I don't need to know the exact location of the fids, I just teach them to the machine. What the software does with the data is bisect the line the centerline between the fids to find the centerpoint of the part.
Electronics Forum | Thu Oct 19 14:37:30 EDT 2006 | curious
OOps, to quick on the draw. If you have the CAD data for you fids I'll bet if you input those numbers (not teach on the machine) they'll work. Do you teach your globals the same way?
Electronics Forum | Fri Oct 20 10:15:13 EDT 2006 | wrongway
mid chip solder balls we had that trouble for awhile we went from a 8 mil thick stencil to 6 mil stencil and did some home plate style of cut outs in the stencil for the 1206 caps and resistors it seemed to fix our mid chip solder balls
Electronics Forum | Mon May 04 16:42:34 EDT 2009 | pauld
I'm with hoss67. Trust the local pcb fids. Have you run the camera down one edge of the board to see if it runs off due to a poorly scored breakaway? Some fab houses do not hold very tight tolerances for breakaways.
Electronics Forum | Wed Aug 07 05:26:45 EDT 2024 | dimamalin
We are working with ASM SX machines. To solve similar issues, it is necessary to check the PCB thickness in addition to the component height. Reduce the placement speed. Check the possibility of correcting the placement profile for the component. If
