Hello
I have made a request for a price for the machining of a chassis and the mechanic asks me for a developed plan to cost me my part. Could you inform me of the meaning of plan in developed.
Initially, I provided him with a 2D plan (pdf, dxf)
Thank you in advance
Youngest child
Hello
It is a view of a sheet metal piece unfolded to allow the supplier to identify the dimension and trajectory of the part to be cut flat
This is also true for bent tubes
Perfect!! Thank you Tomalam and have a good day to you
Hello
If you do the press, you have to plan the lengths of the folds.
The general rule of thumb is to measure the neutral fiber which is 2/3 - 1/3 of the thickness of the sheet.
The fact that he asks you for the press is that he will not take responsibility for this press and if you have a lot of holes or other machining on different folded walls, there is a risk that they will not fall properly.
Practice is not always identical to theory.
S.B
Indeed, sheet metal pliafge is far from being an exact science and the devellopé can change by a few mm depending on one tool to another. We have to be very attentive to this.
If your part requires an important precision, it is not up to you to calculate the devellopé but to your patron...
In my company, when we acquired solidworks, we realized that the way of modeling the sheet metal influenced the development given by the software. A part converted to sheet metal functions gave a false development (with respect to our constraints and tools) by comparison to a part modeled directly with sheet metal functions. Strange but nevertheless observed, checked and approved by sheet metal specialists...
As far as I can remember; There is a K-factor to change in the folding function depending on the folding Vés you have.
Hi @aldebarian
It's not easy to know the loss at the folds
why because each machine as well as the bending Vs are #
So it's up to your folding sheet metal to give you the right values
To do this, do some tests
on sheets of the same cross-section as well as the weft of the yarn according to the material
Watch this video
http://www.youtube.com/watch?v=d068bXXRsU8
A tip:
Put your sides on the folded piece
Do your no hill press
it's up to your sheet metal workers to give you the loss at the bends (he's the master of the machine)
@+ ;-)