Electronics Forum: skew (Page 1 of 23)

skew components

Electronics Forum | Thu Sep 22 15:15:15 EDT 2005 | stepheniii

How are the cameras calibrated on those machines?

skew components

Electronics Forum | Tue Sep 20 12:38:05 EDT 2005 | Mark

Hallo, I have a problem with Topaz Xi with FNC nozzles. We have front, back and single camera in Topaz Xi. When i am using front camera and placing SO8, TSSOP14, TSSOP16 etc, using nozzles 73F the accurancy is ok. But when i switch to the back cam

skew components

Electronics Forum | Sun Sep 25 16:02:59 EDT 2005 | mark

The calibration was ok. When i switch off the back camera and use front one everything is ok. Is it true that when Topaz use back line camera after checking the components the machine rotates the components 180 degree?. Mark \

skew components

Electronics Forum | Mon Sep 26 07:56:38 EDT 2005 | pavel_murtishev

Hi! Try to make "R_AXIS_ACCURACY" calibration for all of FNC heads for back camera only. I met such problem on Topaz-X. There was clearly seen offset on 0.8mm pitch components. I simply calibrated all cameras for FNC nozzles and problem disappeared.

skew components

Electronics Forum | Tue Sep 27 23:02:55 EDT 2005 | selva Govind

Hi Mark, This problem can be overcome by adjusting the camera brightness - Gain & Offset. I think the offset value is very high. Try reducing it.

skew components

Electronics Forum | Wed Sep 28 20:54:04 EDT 2005 | Ken

I would run scale calibration first (for the suspect camera). That may be your only problem. However, if your having a rotation issue and all major angles are off (differently) then it is most likely R-axis accuracy. However, I would run AMF and

0402 placement skew

Electronics Forum | Fri Jul 06 18:22:51 EDT 2001 | davef

Oooo, you are waving 0402. Tell us more about your wave and its set-up. Never seen this [knock on wood]. When is this skewing occurring, after placement or during cure? What�s the distribution? What happens when you slow-down yer placement rate?

0402 placement skew

Electronics Forum | Mon Jul 09 20:46:22 EDT 2001 | davef

Is the glue intended for printed SMD attach? 3 Are you following all the manufacturer�s glue shelf life recommendations? 4 Are you observing all the manufacturer�s glue working life guidelines? Finally, what level of skewing are we talking about?

0402 placement skew

Electronics Forum | Fri Jul 06 09:39:18 EDT 2001 | johnw

Hi guys I am having problems with skewed placement of 0402 devices I would like to add the board has raised pads and we are placing on glue. We are now printing the glue rather that dispensing with a GL5. have any of you guys had this pro

0402 placement skew

Electronics Forum | Sat Jul 07 04:30:23 EDT 2001 | johnw

Dave this seems to be happining at placement altough when u run cal board the palcement is fine could the glue density be causing this

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