Hello
Following the modeling of the casings - cf pdf -, I have at my disposal the machining center mentioned in the question, does anyone know this machine
And is it possible to machine these crankcases without having to reposition them? Am I clear?
Solidworkcam to this machine with its post-pro, that's already it!! So simulation possible?
Sincerely, Pierre
Hello @pierre32.debat
We should say a little more, especially is it cut from the mass or is it the recovery of casting parts (it seems to be zamak or aluminum).
In addition, we can't see where the material removal is! Is it only the bores and holes of the assemblies of the crankcases or other parts.
For the colored part "goose poop" on the PDF it will be hot to cut from the mass
If it's cut from the mass with a three-axis there will be rework at least two for each main face and if only because of the vibrations because you have a lot of quite thin walls. It depends on whether you have standard fastening tools (typically a cube or if you have specific tooling to hold your parts). Also it depends on whether you have fastening beads that are removed in the last phase of machining.
In short, as we don't know anything, it's difficult to give you good information.
Kind regards
Hello
While waiting for the machining, I started a 3d print of the left crankcase...
a+
Hello
Your question is more about the machining strategy, which is not so much the subject of the forum. ;-)
That said ! AMHA as you have a machine only three axes, you don't have to work too much flat on the table but rather vertically by having fixed your part on a large square or more traditionally on a cube.
You will have more possibilities by working flat but raised so that the spindle can access the recessed part or with the two ways I mentioned above.
You also have to know how the piece is held.
You also don't say if the part is cut from the mass or if it's only machining rework from a casting part (or 3D print, plastic or metal).
I deduce that it is cut from the mass given the machining time of 19 hours 44 minutes and 94 meters of machining
Kind regards
Hello Zozo_mp
Yes cut from the mass, then I will go to where the machining center is and keep you informed.
Attached are 2 photos of the left and right rear crankcase printed
Hello
I confirm what I said previously for a 3-axis bike. After that, it depends on the tooling available to the machinist.
But from what I see of your parts, it will be necessary to do several repetitions On the large crankcase with its somewhat complex shapes, it is a minimum of three retakes without a suitable milling tool.
For the others, it's two retakes (one per side)
The covers are justified by the fact that it is cut from the mass. If there was a casting blank, the machining strategy would be a little different.
Given the size of the parts, it will cost you an arm and a leg because it is at least 7 km of tool course.
As a curiosity, the machinist asked the machinist for the overall machining length of roughing and finishing.
Two little tips:
a) Ask for the minimum surface finish quality (coarse rough quality, although with modern tools this is less visible) for everything other than the bores and faces of the joints.
b) ask for a relaxation stabilization treatment in order to remove the residual stresses internal to the material. This operation must be done before the finishing milling (Corsican egg)
If your part is made of light alloy, you need a temperature of 150 degrees to 220° for at least 6 hours.
If your machinist is a little clever and since the part is cut from the mass, he will leave until after the heat treatment the growths that are used to fix the part (typically cubes). These growths are used to fix the part and serve as a reference surface for all faces. They are changed at the end when other reference surfaces from the various machining operations are available
Kind regards
Thank you zozo-mp, I'll keep you posted, this weekend I'm going to where this machining center is located
Hello @pierre32.debat
Well done!
I guess these are the white crankcases made in 3D printing and mounted for the installation.
Have you seen the machinist for the part cut from the mass. Or is the one made in 3D Print enough.
Are you the one who made the brass parts??? Very beautiful pieces by the way!
Pure question of curiosity in front of the beautiful work what you use this twin cylinder for and is it an explosion or a compressed air. What is the remote chain sprocket used for?
There is a lot of equipment in your milling workshop, lathe, .... (carbide cutter ;-) :-) )
Kind regards
PS: it's not a beginner's job such a system!!!! ;-) ;-0
Hello to you
It's an engine to be manufactured for a special motorcycle to be manufactured too, in other words
A motorcycle for the impossible climb.
I went to where the Mazak 3-axis machining center is, I have the link cable, stay in Solidcam to make the CNC files for this machine, the owner of the Mazak says it won't wear it out, just chips!!!
If anyone knows this Mazak AJV 32604N machining center, Post pro Mazak M32, I'm all ears open
Thank you for your support
Very nice project.
What engine capacity?
2 x 500cm3 -2 tps, actually 2 displacements of Honda 500 CR - CROSS engine -
FYI, I'm on the stairs, modeling - sketching with ARC+ - rendering with Artlantis - Unfolded and dxf cutting SOLIDWORKS - Plasma B25 Plasmatome 2500x6000
The company is called Esquisse Métal, in the Gers 32