How to draw a radial slot through a round shaft

bl1droid
Enthusiast
Enthusiast

How to draw a radial slot through a round shaft

bl1droid
Enthusiast
Enthusiast

I have a pneumatic twist clamp that i'm wanting to make my own version of so i can control my vertical clamp stroke length as well as my 90 degree rotational distance.  I want to cut a 3/16" diameter radial slot through the center of a 1/2"diameter pin.. the first 3/8" of the path is a straight slot through the part.  The next 1/2" of slot length is rotating so that when it makes it to the end of the 1/2" length.. it is now 90degrees from where it started.  In the machining world it would be machined like this.. plunge a 3/16" diameter endmill through the center of the shaft.. now move the shaft length wise while rotating it so that the shaft has turned 90 degrees from the start by the time it moves a 1/2" in length.  I can't figure out how to cut this correctly in Inventor.  My initial thoughts were to just use the coil command like i was designing a spring.. but i'm having no luck with this.  So i have switched to trying to draw the path and sweeping through it but the sweeps don't rotate correctly.  I'm using 2023 which is also frustrating because for some reason my sweeps no longer give me a preview.  In previous versions.. no preview meant it wasn't going to work.. now you get no preview no matter if it will or won't work.  If there is a toggle now for the preview i haven't seen it.  This shouldn't be this hard to do.  Can someone help with some ideas on how to proceed?

thanks guys,

Brian

Inventor 2023

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Accepted solutions (2)
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bl1droid
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Enthusiast

rotary slot.jpg

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bl1droid
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Enthusiast

i can get it part way through the round piece but if i try and go all the way through then i get an intersection error on the sweep.

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jeremy_wasserstrass
Advocate
Advocate
Accepted solution

Take a look at the attached 2022 file for an example of solid sweep.

Using Inventor 2022 on Windows 10

Ideas needing support: spur gear tooth profile, rack gears generator

pcrawley
Advisor
Advisor
Accepted solution

Inventor 2023 - preview...

01.jpg

And cut through...

02.jpg

 

Something up with the geometry you're working with?  

Can you post the part you are having trouble with?  (I'd post mine, but it's metric 😉)

Peter

bl1droid
Enthusiast
Enthusiast

that does it.. the issue seems to be that i put my 3d sketch directly on the diameter of my part.  You offset your sketch off the diameter of the part.  Inventor seems to like that a lot more.  The pin directly in the part making the cut is exactly what i needed.

thank you,

bl