Modeling a External tooth star washer

[jaykm]

Hi All,
I am not very conversant with Pro/Sheetmetal module and I need to model a #10 external 12-tooth star washer [0.405" OD, 0.022" thick, 410 Stainless steel]. We are using WestCoast Lockwasher company's product.

The problem lies in the fact that the teeth/lobes are bent in both directions w.r.t. horizontal. For a given tooth, 1/2 tooth bends upwards while the other half bends down.

Does anyone have a 3d model for this? I checked Pro/E stuff site but the model there doesn't work. I would appreciate if someone gives me a guideline on how to do it.

Thanks in advance,
Jaya

 

[looslib]

Do you really want/need the model in it's free state. We model hardware, especially lock washers, in their constrained state. If they are modeled in thefree state, it might show that you need a longer bolt than you really do.

"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli
CAD/CAM System Analyst
Ingersoll-Rand

 

[jaykm]

Hi Ben,
I would need to show them in exploded assembly indicating the locations. I also need to create a detailed drawing for this part (although it is a std. part!), hence the need to model this as accurately as possible.

Basically this washer is being used to provide ground contact between two painted surfaces [the teeth break the paint and assure metal-metal contact].

Thanks,
Jay

 

[TXS]

can you just do a revolve that has a section that is bent up and dwon then cut away what you dont need?

MM

http://www.txsdesign.com/

 

[dbaker]

See SM1 "twisted wall" section in Frotime free tutorial

http://www.frotime.com/tutorials/Tutorials_Free_Download.