So I need to model a garage door and I was pondering the best way to model it so that I can show it opening and closing. I am sure someone has done this before and I am open to ideas on how to best proceed.
So I tried both the path mate and the coincident point mate set ups and both cause it to flip over when you move it.
I've not found anything that prevents it from flipping over 100% of the time. The closest is if you also add a parallel mate to whatever you're moving. Even then it flips over if you move it to far and or grab it in the wrong area.
Tim Taby -
If you draw a Spline Line Path in the track and mate a point coincident from either the door panel or the wheel, where ever they need to connect, this method will not flip. What you may need to do is setup a sketch using just regular lines and radius's and then add another sketch on top of that one and trace it using the Spline Line Tool. Then the door will only travel so far and that is it, and nothing flips.
How about a narrow surface that emulates the roller's path at the CL and mate the axis of each roller coincident.
Kevin Chandler - that is a good way to go, however there is no way to stop the linear movement, or rather when the door gets at the end of the track, there's nothing to stop it, unless you get something together like here......
The 1st Weekly Power-User Challenge: Mate a Pin in a Slot
John Stoltzfus wrote: Tim Taby - If you draw a Spline Line Path in the track and mate a point coincident from either the door panel or the wheel, where ever they need to connect, this method will not flip. .
John Stoltzfus wrote:
If you draw a Spline Line Path in the track and mate a point coincident from either the door panel or the wheel, where ever they need to connect, this method will not flip. .
Never tried spline path but why on earth, from a constraints standpoint, would SW see a spline differently than a line and arcs that are attached end to end?
That's a little nutty.
When I was playing with it this morning, a coincident constraint will only allow you to select one entity as the "path." I assume that is why you create a spline based on the lines and arcs. WIth the path mate, you can select multiple entities, so the creation of the spline is unnecessary.
The Selection Manager button opens this pop up menu which allows you to make your choices.
This is the first time I've learned about the path mate. I can see it coming in handy.
(biting my tongue on the flipping mates.)
Matt Juric wrote: Never tried spline path but why on earth, from a constraints standpoint, would SW see a spline differently than a line and arcs that are attached end to end? That's a little nutty.
Matt Juric wrote:
My sentiments exactly, hence the listed SPR that needs votes
I tried a single spline down the middle of the door and they flipped. I thought maybe if I did a coincident mate on a point on all fours corners of the door panel to a spline that would force to to stay on one side, but nope it still flips over.
I did a pack and go on my assembly if anyone wants to try it. (I'm using 2020 though)
Garage Door.zip - Google Drive
As I said I've never found anything to be 100% foolproof. If you get it nailed down pretty well it will still flip, but less often. When and how it flips seems to be a function of where you click to drag the part and the view you're looking at when you're dragging it.
The large project I worked on essentially had two different sections in a "C" shape with legs going up and down from the end of the legs of the "C". I got to the point that I knew where to pick and when to switch views to prevent most of the flips. When I started however I spent most my time suppressing, rotating and unsupressing mates.
This is clearly just another "Well this kinda works so let's move on to something else" in SW. If you're doing this in 2020 it's been this way for at least four years because the version I was working on was 2016. My guess is that it's been this way since path mates were introduced which means 2008...so twelve years now. Furthermore if you have ever used path mate for anything that has two points this happens. So there is little doubt in my mind that it was a known issue when it was released.
Maybe you want to study.
..is there SPR# for NO-FLIPPING?
Limit mates in addition to the coincident mates might help prevent flipping. Try placing strategic assembly sketch points along the path then create several limit mates with different values between the points and panels. Instead of dragging part components to open and close the door, try moving the assembly sketch point and see what happens.
Well, there are these:
Thanks, Dan!.. well, it clearly a WANT/NEED going way back!
..or, maybe using a Chain Pattern?
I will give that a try Paul when I get some free time to mess with again. I'm ok with just using an open and closed config since it is going into a large assembly and will probably never get moved again.
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