Ridged washer creation

I also put the file of the part (SW2018)


vis_embout_titane_moyeu_arriere.sldprt

as you are on   SW 2018

I won't be able to do anything

if your triangle element of matter is vertical see the constraints

Your cut must be vertical and your repetitions too

Creates maps to see the outside and inside sides

@+ ;-)

I checked everything, everything is perpendicular. I put the sketch plane in the background, took a measurement at the bottom and top of the striation, and I have about 2 tenths of a difference (0.39mm at the top and 0.21mm at the bottom) when I should have 0.4 at the top and bottom. I don't understand.

I have the same problem on another part that I use as a gear but since the length of the groove is much greater, the difference is even greater.


vis_dembout2.jpg

you can be perpendicular but neither horizontal and vertical

so see if you are horizontal and vertical

@+ ;-)

I'm fine vertical and horizontal, how does that get my head. 

well after checking I think I found the problem

The fact is that the repetitions cut in the previous cuts

See attached image the red line coresponds to the corner of the remaining piece

so now if you want each labia to be perpendicular

you have to choose another walkthrough

Create a part with the desired shape

and via the combine tool subtract this part from the washer and then do a repeat

@+ ;-)

Great, I'll test this solution, thanks for your help. I could never have found it.

no bleme it amuses me

and I love above all ............. Trying to find walkthroughs

It allows me to learn and understand the problems related to geometry and log

@+ ;-)

It's me again, well I can't do it. I did a subtraction of the part and the cut is perfect as I want it but impossible to do a circular repetition on the combine function. I tried to do the opposite by creating the volume then circular repetition (the volume is well repeated) then doing a subtraction and then it's the subtraction that is no longer possible. No, I believed in it.

Trial by cutting a complete tooth

on a copy of your piece name it with a number in +

 

And make a repetition Of this portion of the puck

@+

I'll take you some screenshots. Is it SW2018 that is messing around? On your attached file I have the same problem.


rondelle_striee.jpg

Well I thought I had found a solution but even now I have exactly the same problem.

I created a volume and I wanted to create a chamfer, even there my chamfer at an angle it is not stopping me.

 


strie_vis.jpg

it's normal it's a trapezoid base

@+

Testing via variable chamfer

@+

I found the shape I needed, created a groove in the face plane with the desired angle and then created a 3D sketch from this extrusion. 

On the other hand, I don't know if it's possible with a 3D sketch to make an extrusion.

 

 


esquisse_3d.jpg
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Well I've made good progress, I've gone through a 3D sketch, all I have to do is refine and extrapolate for my notched crown which serves as a gear and it's good. Still a lot of headaches but I'm on the right track.


strie.jpg
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Hello

Why not have made a sketch tangent to your washer and done a removal of material with an angle like the attachment made in 2016.


ac_cobra.sldprt

Thanks for the idea but it doesn't work. When you make an assembly the contact is bad with the 3D sketch it seems to work. See image (your piece on the right)

edit: It doesn't work in my case or these splines will serve as a gear, on the other hand for my screw it can work in a braked washer system. Méacoulpa because that was the purpose of my subject but since I use the same system for a gear I had stayed on my gear system (important) and not the ridged washer (subject of the message but much less important). Well, there are two valid answers for both systems.


cannelures.jpg
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Oh yes I see what you mean, you would have to cheat with the plan and apply the same angle to it as to the removal of material to compensate.

Maybe, in the case of a gear the important surface is the support surface which must be identical to have the maximum contact, I don't know if with your method the result would be the same as with a 3D sketch which to have this uniform contact surface goes through a propeller if I don't say stupid, Geometry is far from being my strong suit.


esquisse_engrenage.jpg