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icub-tech-iit / cad-libraries

In this repository we store the CAD libraries and the PTC Creo configuration files.
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SEEGER - SW-25 - Snap ring type SW for shafts #56

Closed divyashah closed 2 years ago

divyashah commented 3 years ago
Description Field
Datasheet component SW rings for shaft
Project Generic
Alias Creo SEEGER_SW-25
IIT-Code
Applicant Divya Shah, @divyashah
Supervisor Luca Fiorio, @fiorisi
Maintainer Marcello Savoldi, @marcellosavoldi
Coworkers @icub-tech-iit/silo-mech

Attachment:

Seeger_SW_Datasheet.pdf

Notes:

For the new ergoCub joint, I am using the SEEGER_SW-25 snap ring for shaft. So I would like to add it to the library. Here is a CAD render of the component. image

However, we can consider creating a family table of this category of snap rings, since this is missing.

Checklist:

Complete the checklist in order to proceed with the request.

fiorisi commented 3 years ago

@divyashah concerning the alias of these parts I would not use SEEGER_xxx. For this kind of fasteners (like screws and bolts) we use the technical specification standard. We have to check the one that defines this components and if available in more than one decide which use. I've opened a dedicated page.

marcellosavoldi commented 3 years ago

in the past we looking for new componets in this folder ... Don't ask me where these documents come from because I don't remember

divyashah commented 3 years ago

@divyashah concerning the alias of these parts I would not use SEEGER_xxx. For this kind of fasteners (like screws and bolts) we use the technical specification standard. We have to check the one that defines this components and if available in more than one decide which use. I've opened a dedicated page.

I am using the SW type of the Seeger Ring as mentioned in the description. On the Seeger Rings website, the standard mentioned for this type of rings is DIN 9927.

However, this type of elastic ring is not mentioned among the brochures that are linked in the technical standard specification page on the wiki referenced above.

in the past we looking for new componets in this folder ...

Also, from the files present in this sharepoint folder, the ring similar to one I am using is named NOR_INA_WR.PRT which doesn't have any particular standard code (ISO/UNI/DIN).

We need to ensure if this is actually a standard ring or not. We can then define the alias accordingly.

cc @marcellosavoldi @fiorisi

fiorisi commented 2 years ago

@divyashah can we close the issue following the approved technical standards?

divyashah commented 2 years ago

@divyashah can we close the issue following the approved technical standards?

@fiorisi I still did not commit the file for the this. I have created the family table, but I wanted to check if I can somehow assign the calculated density, for every instance, as a relation.

I will try it and then commit the files accordingly, before closing this.

marcellosavoldi commented 2 years ago

since we're talking about an object made of a material ... can we just assign a 308 stainless steel and let Creo do it all?

@fiorisi , @divyashah

fiorisi commented 2 years ago

since we're talking about an object made of a material ... can we just assign a 308 stainless steel and let Creo do it all?

If the datasheet of the component specifies that is made of that material, then yes. Otherwise I would wait to have the new materials library and discuss weather introducing some generic materials to use for these cases.

MrAndrea commented 2 years ago

It will be useful to discuss this task at the next Silo Meeting at the of the month.

divyashah commented 2 years ago

I added the DIN_9927.PRT family table for the SEEGER ring type SW for shafts. image

For now, the family table consists of instances from nominal diameter 14 mm to 47 mm. image

I also assigned calculated density for each instance following the solution proposed in https://github.com/icub-tech-iit/cad-mechanics/issues/214#issuecomment-1155507804.