share a welded assembly

[jiji_akiko]

Good afternoon to all,
I'm drawings for a customer (welded and worked assemblies), and the latter advised me to quote holes and single parts. taking as reference: when possible the processed faces, otherwise the half-mills of the aid.
someone would tell me if it is correct and why of this choice.
the odds circled in red, would be those to be eliminated.

 

[MassiVonWeizen]

starting from the assumption that you have to know the context to make a correct quotation, what you have been told is generally right.
because it should start from any processing it seems quite obvious to me, while in regards to the half-way is because the silhouette of an element is rarely squared as in the cad therefore the half-car guarantees greater precision.
Moreover in your specific case you have put all the quotas as functional and therefore the operator cannot know what are important for assembly also because there are no specified tolerances.
since the holes are centered with the dig you can deduce that they are tied to it therefore the best thing would be to quote the dig, which you did not, and then regarding its half-mills the holes; other quotas should be placed in brackets indicated that they are not functional.

 

[jiji_akiko]

starting from the assumption that you have to know the context to make a correct quotation, what you have been told is generally right.
because it should start from any processing it seems quite obvious to me, while in regards to the half-way is because the silhouette of an element is rarely squared as in the cad therefore the half-car guarantees greater precision.
Moreover in your specific case you have put all the quotas as functional and therefore the operator cannot know what are important for assembly also because there are no specified tolerances.
since the holes are centered with the dig you can deduce that they are tied to it therefore the best thing would be to quote the dig, which you did not, and then regarding its half-mills the holes; other quotas should be placed in brackets indicated that they are not functional.

Hello Masses,
Thank you for the answer.
you mean the individual details? in case the answer was yes, they manage the individual part. listed on another sheet.

 

[MassiVonWeizen]

by dig, term gergale, means an opening.
if the holes are to be made to welded element, the half-pieces of the opening and the holes are quoted from these.
It is not always so, it seems to be in this case by deducting it from the first image.
In the first image, there is a big mistake due to a misuse of symmetry.
the symmetry should be put if there are no other quotas of position or if these other quotas are not functional, then in brackets, but of simple help; instead you have quoted the fresata from 730 as symmetric when instead it is 55 on one side and 65 on the other; Obviously the customer calls you back (in addition to having its own internal methods). besides if you have a processing the vertical position will start from this

 

[MassiVonWeizen]

other consideration: the horizontal intersection is 600mm for 20mm holes that can be used for m18 screws.
if the element that is fixed has a threaded hole and not passing is that the screw has possibility of play, of 1mm only on the element in figure; the measure 600 has with general tolerance m a scaffolding of +-0.8 so you can understand how the assembly of both screws is really relocated, not to mention the tolerance of the other mounted element. so with the quoting you used, where there are no specific tolerances and you do not know which is the important quota, the possibility that the mounting does not succeed is likely.

 

[jiji_akiko]

other consideration: the horizontal intersection is 600mm for 20mm holes that can be used for m18 screws.
if the element that is fixed has a threaded hole and not passing is that the screw has possibility of play, of 1mm only on the element in figure; the measure 600 has with general tolerance m a scaffolding of +-0.8 so you can understand how the assembly of both screws is really relocated, not to mention the tolerance of the other mounted element. so with the quoting you used, where there are no specific tolerances and you do not know which is the important quota, the possibility that the mounting does not succeed is likely.

hello Masses thank you infinitely, I will certainly treasure your advice!
for the tolerances, I also noticed at the beginning but it would seem that they little care (there are no complaints from the customer).
Thank you again.