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Subject:
From:
"<Jin Hong>" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 7 Dec 1999 21:58:46 +0800
Content-Type:
text/plain
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text/plain (147 lines)
Mr.Jerry Wagner ,
Could you give me a ED's copy?
Regards,

Jin Hong
-----Original Message-----
发件人: Jerry Wagner <[log in to unmask]>
收件人: [log in to unmask] <[log in to unmask]>
日期: 1999年12月3日 22:43
主题: Re: [TN] Why SPC is not used more


>ED I have a copy of your article very well said
>
>> -----Original Message-----
>> From: Ed Cosper [SMTP:[log in to unmask]]
>> Sent: Thursday, December 02, 1999 2:52 PM
>> To:   [log in to unmask]
>> Subject:      [TN] Why SPC is not used more
>>
>> Lou has a made a very good point.  In one article I wrote for PC Fab some
>> years ago on SPC, I made a similar comment.  Oh the subsequent wailing
and
>> gnashing of teeth!!
>>
>> I stated in this article that one of the first things and effective SPC
>> program will highlight is incompetence. The problem is simple. Once you
>> highlight a concern, someone now is expected to fix it. In many
instances,
>> those responsible may not be able to fix it. This presents a significant
>> problem to many in our industry that may have been promoted into
positions
>> that they are simply not qualified for.
>>
>> I know many may challenge my position on this but I suspect when were
>> alone
>> and no one is around, we all can relate to individuals to which my
>> scenario
>> applies.
>>
>> Just my opinion and that's all it is.
>>
>> Ed Cosper
>>
>>
>>
>> ----- Original Message -----
>> From: Lou Hart <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, December 02, 1999 5:01 PM
>> Subject: Re: [TN] SPC Information
>>
>>
>> Thanks, Bob, for your comments on SPC.  Your last point is critical -
gage
>> error.  If you don't have a good gage, give up right away.  By good, I
>> mean
>> not that it is able to determine that something does or does not meet
>> spec,
>> rather, that it can discriminate between parts or coupons or any test
>> sample
>> that actually comes off the production line.  There's a book by Don
>> Wheeler,
>> Evaluating the Measurement Process, that deals with this point.
>>
>> SPC is not a cookie cutter approach.  You need some engineering sense.  I
>> dare say no one who has used SPC found a recipe for it in his or her
>> industry in a book.  It's a tool.  I can go out and buy a box of
wrenches,
>> but that doesn't make me a car mechanic.
>>
>> I'm interested to hear from others on the new IPC document on SPC in
>> assembly, am still eagerly awaiting my copy.
>>
>> Why is SPC not used more widely?  It's been around 70 years, easy to use,
>> and it helps.  Hate to sound cynical, but maybe it's because with SPC any
>> operator can see and prove when engineering and management has given him
>> an
>> incapable process.
>>
>> Lou Hart
>>
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