How to Effectively Apply Short Run SPC

the GR&R result composed of 10 parts, the data i presented came from 1 of the parts being measured during MSA.

this is a distance data, hole to hole edge requirement

the std measurement is 46.4 + 0.7 mm, we measure this to monitor the wear of the locator to ensure the correct location of the hole.

thank you so much for computing the data i provided...
i will present the data you made to my boss, because he also has no idea how to analyze the data we are gathering....

thank you so much for your time...

I have attached a distribution chart with specifications and a X-MR chart for review. From the distribution, it appears that you are not having any trouble with capability. As far as charting, it is still not clear where the variation is coming from. It looks to me like a combination of measurement and warm-up, perhaps some die slop. Still need to ponder the data some more, but I figured I would post what I have charted in case others wanted to ponder the data also.

I think the next thing I would like to see is some long term data, that may show shifts from raw material lots or set-ups. Do you have any of that data handy?

what i have here right now is the data for the DNOM chart, which consist of several parts with several data.

i tried attaching the data in excel format but i cant attach it..

elmabawaan said:

what i have here right now is the data for the DNOM chart, which consist of several parts with several data.

i tried attaching the data in excel format but i cant attach it..

Click to expand...

See: (broken link removed)

elmabawaan said:

what i have here right now is the data for the DNOM chart, which consist of several parts with several data.

i tried attaching the data in excel format but i cant attach it..

Click to expand...

If you are using the newer version of Excel, save it as an .xls file by save as Excel 2003 worksheet. I ran into that problem, and it fixed it.

to all of you guys, thank you so much!!! your help is really appreciated...
GOD BLESS YOU ALL!!! MERRY CHRISTMAS IN advanced!!!

Is this being stamped as a progressive die or is it stage tooling after the part is blanked?
That is a tremendous amount of variation for a Progressive Die.
I am sorry - I did not see, is this data all from 1 run or spread out over several runs?
As a fellow stamper - I am enjoying trying to troubleshoot this from "afar".....

Pudge 72 said:

Is this being stamped as a progressive die or is it stage tooling after the part is blanked?
That is a tremendous amount of variation for a Progressive Die.
I am sorry - I did not see, is this data all from 1 run or spread out over several runs?
As a fellow stamper - I am enjoying trying to troubleshoot this from "afar".....

Click to expand...

this is not a progressive die, the product has 3 processes & we are monitoring this during piercing process.

the data also came from 4 production runs, this is why we are not sure if we are using the correct technique...

Re: how to implement spc on low volume/Short run SPC

HI -

Can I get any .PPT or document where I can get details of

Define low volume/Short run spc
what different types of charts can be used for low voulme/shor run SPC
how to setup run rules for low volume/Short run spc
how to mesure control limits
how to define/limits Trend

Please help me

Thanks in advance
Ven

Re: how to implement spc on low volume/Short run SPC

chvrajus said:

HI -

Can I get any .PPT or document where I can get details of

Define low volume/Short run spc
what different types of charts can be used for low voulme/shor run SPC
how to setup run rules for low volume/Short run spc
how to mesure control limits
how to define/limits Trend

Click to expand...

What process do you want to apply short run SPC to? Makes a big difference.