3D power transformer printing and associated transport wagon

Zerogee

Zerogee

Clencher's Bogleman
25 Oct 2009
17,122
1,687
North Essex
Thank you for your post Jon.

With your eagle eyes you have seen someting I did not noticed !
Even I don't understand what it means !!

Does this mean in other words : do not bump ! ... ?

Sorry, just my immature and childish (ie: British) sense of humour....! :rofl:

The sign actually means that the wagon is not to be "hump shunted", which is a form of gravity shunting: Classification yard - Wikipedia

But "hump" can have another, slightly rude meaning to English speakers (something that two people do, or a male dog does to someone's leg), hence finding the sign funny.... :devil:

Jon.
 
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ARIA31

ARIA31

Registered
3 Oct 2017
175
31
71
Toulouse - France
As announced there is some fun with the manufacturing of required parts..... !! :D

Have a look at this video .:)


Yes this is still modelling as 3D printing is.
 
ARIA31

ARIA31

Registered
3 Oct 2017
175
31
71
Toulouse - France
As stated before, the rolling tests shown the detrimental effects of free plays in the 2 bogies assembly.

Accordingly special care was put in the fulcrum design and ball bearings are widely used.

The screws connecting each bogie to the common chassis are installed with a ball bearing at the chassis level.

Then for the fulcrum a large cylinder is created to counter act the base plate rocking sidewise.

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This large cylinder is fitted with 2 ball bearings around the fulcrum screw and is installed on the common chassis (one ball bearing at the top, one ball bearing at the bottom).

pivot 4.JPG

The base plate has been machined ( see video of the previous post ) as per the following 3D design.

w1.JPG


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When assembled with the cylinder we get this :

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Now we have to create the 8 ribs ( twice four for each chassis ) which will be fixed onto the base plate.

Joël started to machine the ribs with the same material as the one used for the base plate ( plexiglas) but it appeared this is more difficult and also very long lasting. (several hours of machining per rib). So we looked for different material.

At the end, Joël decided to evaluate if these parts might be done with 3D printing.
So he created a new 3D file and started the printing.

The result is quite promising and the assembly of the 4 ribs onto the base plate much easier than with the previous design and parts acquisition.
However for the complete wagon 24 printing hours are required for the 8 ribs !!

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When assembled

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The following picture shows the slot which allows this rib to be connected to the base plate side

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Like that:

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Then an inner rib will close this complete rib assembly.

This is where we are today.

The next major assembly of the wagon will be the cradle placed in between the 2 half wagons and carrying the transformer. The design is currently underway. It will be made of 3D printed parts as well, but being quite long, reinforced with 2 aluminium U shaped rails.

Later on we intend to put details features (cabinet, hand rail, pumps,... etc) on this skeleton to make it more real.
 

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ARIA31

ARIA31

Registered
3 Oct 2017
175
31
71
Toulouse - France
Pieces parts production continued

pieces parts (2).jpg

pieces parts (15).jpg

It's time for assembly, very first try....

pieces parts (3).jpg

pieces parts (4).jpg
 
ARIA31

ARIA31

Registered
3 Oct 2017
175
31
71
Toulouse - France
Progress is made by gluing the ribs onto the chassis

temp(27).jpg


temp(29).jpg

temp(32).jpg

this configurationn occurs when the heavy load has been delivered as on following pictures

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ARIA31

ARIA31

Registered
3 Oct 2017
175
31
71
Toulouse - France
3D printing is going on. the 4 ribs are now available

20201021_165216.jpg

We are keen to get the wagon rolling on a railroad

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We are looking for the grids.
From below:

20201021_170024 - 1.jpg

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The cradle design is now underway. 2 aluminium rails are forecasted for re-inforcement.
My friend is considering a machining process to get it as shown in post 22.
 

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