Cable drag chain needed

jurra commented 6 years ago

The location of the X Axis drag chain is at the top of the 2nd rail at the X axis. CAD is needed

The Y axis drag chain location need to be designed. Most likely right under the right Y rail. but mounts have to be designed

About 3D model for 3D printing:

Still fillets need to be added and wall thickness should be checked. But the dimensions of the circumferences and the links are working well with no interferences.

Next steps:

[x] Make lofts in the male and female like in this example below:
[x] Needs to be checked and printed, to test how it works.
- [ ] Second round of test prints to test the coupling of the lid with the chain segment
- [ ] Change dimensions of the chain-segment height is short. Define height and also check the width maybe it can be bigger.
[ ] Find off the shelve version and add to BOM

jurra commented 6 years ago

Here are some thickness dimensions, and some general dimensions included. Any remarks on wall thicknesses, and details for 3D printing to test?

jurra commented 6 years ago

I think that tech-drawings are most useful when it comes to peer review, and double check with other more experienced people in the team.

polemidis commented 6 years ago

they should be fine. Can somoene print 2 pieces?

jurra commented 6 years ago

I will take care of that with the guys overhere. @JannesHN and @vinaybhajantri or some other friend at the faculty. This is just one part, front and top view though.

jurra commented 6 years ago

I figure out is a good idea to have this notebook, with a grid of 10mm to make technical sketches with proper dimensioning and scaling. It helps to figure out some details, and think of realistic sizes.

jurra commented 6 years ago

I am making small variations of female-male coupling of the "nipple" , for 3d printing tests. variants are to be found in different branches, derived from my last commits

jurra commented 6 years ago

what works

The rotation works fine, maybe a bit of friction

what doesn't

The part design some adjustment with tolerances, specially with the lid chain segment

Lid segment coupling not working
Dimensions need to be adjusted: define reference dimensions for height and width
Loose a the connection between chain-segments (friction between male and female circumferences)
Augment the female constrain of the nipple, to allow fully aligned chain segments (fully horizontal)

polemidis commented 6 years ago

I will add photos of my setup. It looks like we have to make it bigger. Taller for sure, and maybe a little wider. Thats 50mm wide? How tall is it?

jurra commented 6 years ago

it is 50mm wide, and 18mm tall now. I think the width is not as bad as the height.

jurra commented 6 years ago

the coupling of the lid with the chain segment is not working, yet, it needs a reprint. Find the last version in my latest commit, and @krishnarajagopal2011 or @JannesHN can you put it to print today? I am working on making bigger the chain segment @polemidis if you have some reference of height, pictures with a measuring tape. A reference of wires modeled with cylinders in freeCAD can also work as a reference.

polemidis commented 6 years ago

Hope that helps. You can see the torch wire is mounted to the outside because there is no room. Also it has to withstand weight more so its does not sag

polemidis commented 6 years ago

Absolutely we have to go with sturdier chain. Another issue I found out after more testing is that they sag a lot. Too much weight makes it to sag and turn to the opposite direction, where at some point it clips off.

goscommons / CNC-Plasma-Table