extrusion of aluminum alloy design profiles

[Daniele-san]

Good morning to all,
I would need help on designing a section of an aluminum profile.
in particular I would need to dimensional the following:
1. of the "binaries" on which autoforming or autifying screws will be fixed (contacts fixed perpendicular to the extrusion axis)
2. of circular ducts parallel to the extrusion axis always used for fixing of self-forming or autulating screws (in parallel to the extrusion axis)

Thank you.
Hi.

 

[Daniele-san]

Good morning to all,
I would need help on designing a section of an aluminum profile.
in particular I would need to dimensional the following:
1. of the "binaries" on which autoforming or autifying screws will be fixed (contacts fixed perpendicular to the extrusion axis)
2. of circular ducts parallel to the extrusion axis always used for fixing of self-forming or autulating screws (in parallel to the extrusion axis)

Thank you.
Hi.

Can no one of you help me?
Hi.

 

[SHIREN]

Can no one of you help me?
Hi.

Hi.
attach a sketch also made by hand
Thank you very much

 

[Daniele-san]

Hi.
attach a sketch also made by hand
Thank you very much

hi shiren,
I attach a hand made design

 

[Venez]

Hi.

Usually for tubes I use a geometry as from attached image, the 3 pins are those that the self-tapping screw will go to "dead" (the example is for a screw of 2.9). tolerances for extruded profiles are quite wide, this geometry prevents you from straining the screw into the aluminum (but look that there are no axial forces that tend to tear away the screw, I don't know if you simply have to screw a plate or a head support)
As for the track, you have to see the inner and outer diameter of the screw you want to use, and understand what tolerances to work, in the sense: you have to rely on the uni en 755-9:2002 (standard that defines dimensional tolerances and shape on the extruded in alu) or have margin of bargaining with the supplier that will realize the matrix? In the second case you can propose more tight tolerances

 

[Therapy?]

hi, in the past I had to face a similar problem: for the screws I recommend you to use the autoflowering because on the aluminum the self-forming ones are easily vented (consider that the foreskin of a m4 is 3,65) especially if you think to disassemble/reassemble
for the left screw evaluates well the preforum (tabelle) but the perpendicular one according to me does not work you saw a similar application somewhere? The pairs I imagine for these screws are very low otherwise they skewer
in my case for the perpendicular screws we made drill holes after extrusion

 

[Daniele-san]

hi, in the past I had to face a similar problem: for the screws I recommend you to use the autoflowering because on the aluminum the self-forming ones are easily vented (consider that the foreskin of a m4 is 3,65) especially if you think to disassemble/reassemble
for the left screw evaluates well the preforum (tabelle) but the perpendicular one according to me does not work you saw a similar application somewhere? The pairs I imagine for these screws are very low otherwise they skewer
in my case for the perpendicular screws we made drill holes after extrusion

Hello therapy,
are there alternatives, that you know, to the perpendicular fixing modes?
Considering that cnc machining will be done, I could get some pre-work on the existing track.
Unfortunately I should fix them with printed circuit boards

 

[Daniele-san]

Hi.

Usually for tubes I use a geometry as from attached image, the 3 pins are those that the self-tapping screw will go to "dead" (the example is for a screw of 2.9). tolerances for extruded profiles are quite wide, this geometry prevents you from straining the screw into the aluminum (but look that there are no axial forces that tend to tear away the screw, I don't know if you simply have to screw a plate or a head support)
View attachment 40380As for the track, you have to see the inner and outer diameter of the screw you want to use, and understand what tolerances to work, in the sense: you have to rely on the uni en 755-9:2002 (standard that defines dimensional tolerances and shape on the extruded in alu) or have margin of bargaining with the supplier that will realize the matrix? In the second case you can propose more tight tolerances

thanks venez,
probably is a buo fastening for a side cap without efforts, but having to fix parts subject to efforts I think it is more optimal than the screw bites more

 

[Therapy?]

Hello therapy,
are there alternatives, that you know, to the perpendicular fixing modes?
Considering that cnc machining will be done, I could get some pre-work on the existing track.
Unfortunately I should fix them with printed circuit boards

If the piece has to go under the cnc for me you should make holes you shouldn't have a great additional cost (we did so)
otherwise you should look for fasteners suitable for extruded profiles
the choice must also be made according to the quantity

 

[Daniele-san]

If the piece has to go under the cnc for me you should make holes you shouldn't have a great additional cost (we did so)
otherwise you should look for fasteners suitable for extruded profiles
the choice must also be made according to the quantity

I also thought I could prepare the vertical rails with guides for those brass threaded bars to be inserted.
would you tell me where I can find the size of these?I believe they are standard accessories

 

[Therapy?]

Just look at rs-online we used the calls

 

[Daniele-san]

Just look at rs-online we used the calls
View attachment 40383

yes I know them and well... I meant those rectangular section bars with series of threaded holes

 

[Daniele-san]

yes I know them and well... I meant those rectangular section bars with series of threaded holes

queste per intenderci