a ½ fem botulture studio?

[rinato]

Good morning to all, I have to ask you the following problem:
in the attached image there is a plate plate plate aisi304 20/10, on which I collect the collars quoted through funnel with mechanical press. These collars have, in addition to the tolerance on the internal diamentron, also a circular tolerance of 5/100 and the internal surface, as you can see, must be very "cylindrical" and the final edge intact.
all at the request of the customer, for its technical requirements of assembly.

But now I can get all this just by preparing the hole to be carried out by means of removal of truciole, because a border of the preforus only cut causes fractures etc., because of the incrudiment of the material and the typical fragmentation of the process of drawing.
the punches I use now are totally rounded in tip and the matrices are conical to manage the assotigliamneto, all defined on a purely empirical basis.

my question is therefore the following: with a cad program equipped with fem, it is possible to simulate a cold molding process, (through imbu-
titura,presumo) that allows me to eliminate the phase of "cleaning of the hole" and to be able to get the same piece, with the same result on the final edge?
especially reducing the test times "from the real".

or do you have to recommend alternative processes? If you miss data, ask yourself.

right for completeness: the customer has a 3d tasting machine in receipt of goods for dimensional control to sample. . .

thanks for the attention, reborn.

 

[Counterblow Hammer]

Hi.

personally I would think I would make a step-by-step mold so as to avoid doing everything in a single pass, but it is an opinion of a warm, not cold... .

p.s.: But instead of making the pre-fores in the machine you don't want you to get the laser-cut sheets with everything you need (development and various pre-fores)? . . .

 

[rinato]

hi, it is not necessary to divide the deformation because 1 passage is bearable and in several blows do not eliminate the defects deriving from the incrudiment, instead of the latter it adds.
rather I forgot a detail: The pieces are in work account, we only do that "work". So we don't talk about changing the production cycle, unless we have copernican revolutions and our tests we have also made them with laser cut pieces, but without satisfactory results.

 

[Counterblow Hammer]

I don't know what to say since, I repeat, hot mold... .

As regards the fem I know for certain that at the dimeg of the University of Padua have the program suitable for the analysis fem relating to the processing of the sheet: Try to hear them tell you...

 

[rinato]

Maybe we'll see.
In the meantime we have made two accounts (notoriously the best;-) for the new article, rethinking any equipment for the cn.
the funny is that the customer doesn't even know how we can do the piece... and they're all engineers, eh! except to complain anyway of the cost:frown:.

 

[Counterblow Hammer]

Maybe we'll see.
In the meantime we have made two accounts (notoriously the best;-) for the new article, rethinking any equipment for the cn.
the funny is that the customer doesn't even know how we can do the piece... and they're all engineers, eh! except to complain anyway of the cost:frown:.

What? and perhaps I bet that in circulation to make such pieces at a relatively reasonable price you are in 2 or 3....

for the series: want the full bang and the drunk wife!...

 

[rinato]

- to what he is there is only one other supplier at stake, but for now they keep coming back to us. It must be admitted that it is a particular that is quite screma.

That's all the customers of a certain weight.

 

[Biagio57]

I hope I help you.
Forget the fem speech, you can't find the solution with this method.
I agree that pull the hole first and then cum it, the edge looks irregular and jagged, it is typical of these processing, the greater the thickness and the greater the problem arises.
instead I propose the following method that I apply in some phases of the molding of the plates with progressive molds and transfert. :
1) perform a bas-relief (imbutitura dei 2 holes) up to 7 for one and 5 for the other
2) perform a second coniatura passage to make the outer and inner radius of the bottom of the 2 funnels smaller possible
3) you can repeat this step if necessary with smaller inner edges
4) pull the bottom with a punch that has the lowered inner diameter of 2/4 cents to not scratch the walls
you will have at this point the inner edge on the drained hole and a minimum radius according to the operation described in point 2 that will be as small as from your needs and will be able to replace the current bevel.
if even the inner edge is not good, you can connect it and then repass the hole with a calibration pass.
seems a long cycle, but on appropriate press you can put together all the steps.
the conclusion and that you will have all the pieces exactly equal, so the dedication for important quantities.
Last and last you can make the piece all with a progressive mold that is to be discussed and studied.
I hope I've been helpful.
Hi.

 

[rinato]

Thank you, biagio57, if you have taken away from me that the fem could come to my rescue.
the funnel with the shooting passes I will see to propose them in the office, but I think it will not arouse many enthusiasms. It seems to me to remember that we had already tried it in presets.
Anyway thank you, reborn.