【转帖】checker checklis

yang686526

"checker" checklist...
does anyone have a good starting point for developing a "checkers' checklist" for reviewing and/or approving new/revised drawings?
thanks.
eng-tips forums is member supported.
see
madmango-
your response is fine if a checker is only concerned with "crossing the ts and dotting the is."  one would think that a checker should be more concerned about the design of the product than with the delineation of the product.  after all, a crappy design can be beautifully drawn.
tunalover
i agree that there is much more to a checking list than what madmango recommended, but is is a good starting point, which is what the op asked for.
if you can, get a copy of boeing drafting standard, bds-1018. it is a pretty thourough checklist (however much of it's list is specifically geared toward aircraft industry specific design requirements.
quote:
one would think that a checker should be more concerned about the design of the product than with the delineation of the product.
if we are talking about the difference between good and bad design, this is not the responsibility of a checker. it is the responsibility of the engineering project manager / project engineer / lead engineer / design engineer to be responsible for the performance of the product. a checker (unless you only make a very few products) should really be more of a breadth of knowledge than a depth of knowledge. this breadth is usually in the form of, "lets assume that the design engineer has created a part that will function properly and meet all requirements... how best do i describe this part in order to get it manufactured and inspected."
if you are looking for a checker to determine if a product will meet its performance requirements, then there are bigger issues in the system.
wes c.
------------------------------
when they broke open molecules, they found they were only stuffed with atoms. but when they broke open atoms, they found them stuffed with explosions...
i agree with the others.
wes, that is a great spec, but very hard to get...unless you work as an engineer on commercial aircraft.
chris
systems analyst, i.s.
solidworks/pdmworks 05
autocad 06
do companies really employ checkers that do not care if the product will actually work but only check that the drawing is 鈥減retty鈥?
i trust you to design whatever that will work fine but doubt that you have the knowledge to draw the lines correct. seems like an odd system to me.
we have a checker, they check for:
drafting standards (line type, fonts, etc)
mrp bom and solid models match each other(but not for completeness/correctness)
the host of other requirements fall upon the me, designers and project manager:
overall design
mechanical requirements
manufacturability
component gd&t
tolerance stack-ups
material and finish selection
routings
other
art without engineering is dreaming; engineering without art is calculating.
steven k. roberts, technomad
yes. my last job had a psycho woman as a "checker". she actually sent a dwg back to me and told me "it's not pretty enough". i put it back on her desk and told her "i'll make it pretty for you if you show me the spec that says to do it!". she signed it and let it go.
chris
systems analyst, i.s.
solidworks/pdmworks 05
autocad 06
different checking standards for different companies.  they are tailor made for the most part.  the most effective checker that i have known checked for (among other things):
drafting standards
tolerancing standards
material and finish standards
manufacturability
it was not his job to tell the engineer what material or finish to use, just that the material and finish were suitable and available.  he did not specify what tolerances to use, just that they be used properly.  he was not an engineer, and his function was not to design the product, but to ensure that the proper methods were used to document the product that was designed.
i must say i find it amazing that companies pay people good money just to tell someone that the fonts or linetypes are wrong, especially when as ctopher says when questioned about why they are rejecting something they actually have no idea.
still it must help keep the companies tax bill down right up to the point they go pop.