View Full Version : Fourslide FMEA - Part Specific vs. Family Specific FMEAs
paccnc 19th October 2006, 03:56 PM Hi folks!
Was wondering if someone had an example of a FMEA from someone who runs fourslides. There is a big argument here at the shop and currently my job on the line to see who is right. Battle between quality and production:mad: I have been looking through all of the past posts but have not come up with anything on FMEA for fourslides. I have seen the one on stamping which helped my case but still need one on fourslides.
Jim Wynne 19th October 2006, 04:01 PM Welcome to the Cove :D
Battle between quality and production:mad:
Gee, and I thought quality and production always got along so well :biglaugh:
There is a big argument here at the shop and currently my job on the line to see who is right.
Tell us more about the nature of the dispute, and someone will be able to give some good advice, I'm sure.
paccnc 19th October 2006, 04:31 PM I am new to this position and the production manager has been here a long time so he thinks he knows it all. He has been doing the FMEA's by part specific and I thought we could get by with a family FMEA. He said that it couldn't be done and that I would have to prove him wrong. So if I could get a sample to show him someone else was capable and that this would make our jobs easier becasue we wouldn't have to keep repeating the FMEA. Unless I am way off base here and a family FMEA is not able to be used in this application.
Thanks
Jim Wynne 19th October 2006, 04:42 PM I am new to this position and the production manager has been here a long time so he thinks he knows it all. He has been doing the FMEA's by part specific and I thought we could get by with a family FMEA. He said that it couldn't be done and that I would have to prove him wrong. So if I could get a sample to show him someone else was capable and that this would make our jobs easier becasue we wouldn't have to keep repeating the FMEA. Unless I am way off base here and a family FMEA is not able to be used in this application.
Thanks
There's nothing inherently wrong with the generic approach, and it's often seen in metal stamping, mainly because the process usually changes very little from part to part. If you want to persuade the production person to to do the family thing, concentrate on process failures as potential failure modes, not defects in the output. Take FMEA documents for different parts, and ask him how process failures might be significantly different among them.
A word of friendly advice: don't try to jerk the rug out from under his feet. See what you can learn from him, and discuss his rationale for doing separate FMEAs. Although he probably doesn't know everything, he might know stuff that you don't.
Marc 19th October 2006, 05:09 PM Some companies use machine specific process FMEAs where the product per se is not part of the FMEA. There are several options you c an take. The specifics of your situation are the factors which determine which is best for you.
Excuse my ignorance, but what is fourslides?
Bob Schiller 19th October 2006, 06:13 PM I have had some experience with stamping and fourslides, I have always done FEMAs on a part specific basis, and I can see some difficulties with generic FEMAs especially on fourslides. What does your customer require? Mine always wanted part specific.
Bob Schiller
antoine.dias 20th October 2006, 04:34 AM .........
Excuse my ignorance, but what is fourslides?
Found via google search :
http://www.hamond.com/fourslide/what_is_a_fourslide.htm
Best regards,
Antoine
Manix 20th October 2006, 07:07 AM I too would love to see some examples of generic FMEAs. I am trying (should time ever permit!) to establish an approach whereby failures are databased and can be easily recalled for all similar products.
Difficulty is, the products are "similar" and not the "same", therefore additional processes are used or some processes are removed. The only way I can see it being done on our "similar" products, is to start with the generic version and changing the parts that are not applicable and adding parts that need to be included!
A generic, fast wizard type FMEA would be fantastic and save so much time! Heres hoping :cfingers:
Bill Ryan 20th October 2006, 08:23 AM Difficulty is, the products are "similar" and not the "same", therefore additional processes are used or some processes are removed. The only way I can see it being done on our "similar" products, is to start with the generic version and changing the parts that are not applicable and adding parts that need to be included!
One possibility is to have separate PFMEAs for each processing action your company performs. When pulling the PFMEA together, you would go by your Process Flow and only include those actions used on that part. I don't use this approach but there's at least one member here that does (can't remember who right now). It's an interesting idea and I keep it in the back of my mind for the future.
Jim Wynne 20th October 2006, 08:58 AM Difficulty is, the products are "similar" and not the "same", therefore additional processes are used or some processes are removed. The only way I can see it being done on our "similar" products, is to start with the generic version and changing the parts that are not applicable and adding parts that need to be included!
We're talking about a fairly generic process here with regard to potential process failure modes. The chances are, if you base your PFMEA on defects as failure modes, you'll have a much more difficult time with generic PFMEA process. In your case, as Bill suggests, the processing requirements should dictate the methods, and as he also suggests, you might find that sub-processes are themselves generic in nature, and common to more than one part, and so might be addressed in the "family" way as well.
Michael Wagner 1st November 2006, 04:50 PM Found via google search :
http://www.hamond.com/fourslide/what_is_a_fourslide.htm
Hi All:
I maintain the referenced web site.
A better set of pages to answer the question about PFMEAs would be
http://www.hamond.com/slide_forming/slide_forming_introduction.htm
The "what is a fourslide" page is more intended for purchasing agents and other people requiring a broad overview.
Michael
Bill Ryan 1st November 2006, 05:39 PM Hi All:
I maintain the referenced web site.
A better set of pages to answer the question about PFMEAs would be
http://www.hamond.com/slide_forming/slide_forming_introduction.htm
The "what is a fourslide" page is more intended for purchasing agents and other people requiring a broad overview.
Michael
Welcome to the Cove :bigwave: and thanks for the feedback. I haven't checked out your website yet but plan to do so in the near future.
pratishesh_72 29th November 2006, 03:36 AM Hi folks!
Was wondering if someone had an example of a FMEA from someone who runs fourslides. There is a big argument here at the shop and currently my job on the line to see who is right. Battle between quality and production:mad: I have been looking through all of the past posts but have not come up with anything on FMEA for fourslides. I have seen the one on stamping which helped my case but still need one on fourslides.
Dear Friend ,
It is poosible to prepare a Generic /family FMEA for any product provided their apperance and geometry are similar.
Ex:In our case where we manufacture piston rings , we always follow Family type FMEA.
i.e in broad we have rings which are categorised based on the surface treatemnt they undergo, i.e one is Molybdenum cioated , one is nitrided and other is Chromium plated.
In all the above case the manufacturing process remains more or less.Now in this case we adapt FMEA for each surface treatement process and any part number will follow the one of the above category FMEA.
Bye
Pratishesh
:bigwave:
|