Electronics Forum | Sat Mar 21 16:37:22 EST 1998 | Earl Moon
| | Cpk's on top flight ovens (e.g., Conceptronics, Heller, Electrovert, Vitronics) vary wildly, from 1 to 2+, between different supplers. The suppliers don't seem to understand Cpk's. A supplier's rep whose oven has a Cpk of 1.0 told me: | | 1. C
Electronics Forum | Fri Sep 16 02:36:07 EDT 2005 | Steve
We're in process of calculating Cp, Cpk for our CP machines. Does anyone know what we need to have to use Fuji PAM? Thanks Steve
Electronics Forum | Wed Feb 02 15:12:44 EST 2000 | Chung H. Park
Mr. Kim: The answer to your question depends on the type of mix you are dealing with. Here is the approach you should be taking to answer to your question yourself: 1. Establish the reflow process specifications for products. 2. Profile your p
Electronics Forum | Tue Feb 06 11:07:43 EST 2001 | cjrjmj
I am looking for some assistance with placement accuracy studies for chipshooters(Fuji CP4-Cp642) and platform machines (GSM all configurations, Siemens HS50/S25). I would like some information on companies and recommendations on process of evaluatin
Electronics Forum | Sat Oct 18 08:17:40 EDT 2008 | hussman
Use a Cpk study on your screen printer. Deviation from print to print. Most reutable surface mount machine companies will supply you with their Cpp study they performed on your machine before they shipped it. On ovens use your profiler. You can
Electronics Forum | Wed Jul 07 22:59:06 EDT 1999 | Dave F
| Hi! | I'm a process engineer attempting to do a capability study on our existing convection reflow oven - Heller 1500. It was recommended by an independent consultant to do at the very least, load testing, process ready testing, and board uniformi
Electronics Forum | Wed Aug 21 01:40:42 EDT 2002 | jkhiew
Hi all, Our management set target 50 ppm for overall process like printing,mounting & reflow soldering. Our m/c cpk for mounter is 1.0 & for printing is 1.33. So, pls comment !
Electronics Forum | Fri Mar 07 20:52:51 EST 2003 | Neil
With any kind of statistical study you must have some limits to which you can measure against. The whole purpose of generating a CPK is to ensure that the equipment under observation can meet these limits when used under normal operating conditions.
Electronics Forum | Tue Mar 04 07:23:15 EST 2003 | msivigny
Hello ricardof, To implement Cpk studies on SMT production equipment, you will require highly accurate glass plates, glass component slugs, accurately manufactured stencils and a measurement system to perform X, Y and Theta positional deviations from
Electronics Forum | Tue Sep 26 20:14:29 EDT 2000 | Dave F
I agree with Wolfgang that a check list, like he proposes, is very useful in evaluating your ability to assemble products. No sense designing a 16 inch board if the throat of your wave is 15 inches. Taking a different tact � what if you define your
