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No warning on over defined assembly
kees_bijker
Member Posts: 128 ✭✭
I have a pinion gear which is on a revolute. It works together with other gears, also on revolutes, and matched them with a gear mate.
When I grab the pinion gear with my mouse, I can rotate it and evetything moves as expected.
Then I added a shaft for the pinion gear, which I also gave a revolute. Since I want the shaft to rotate with the pinion gear as one, I grouped the pinion with the shaft. It all worked perfectly.
This morning it didn't, I could not grab the shaft or the pinion gear to move them, but when I grabbed one of the other gears everything worked fine. Also when I selected the revolute and animated it, the whole construction worked fine.
I found that when I surpressed the revolute of the shaft, everything worked fine again. So it was over defined or something but without any warning.
should it have given me a warning or is this a weird case? I have seen instances when mate connecters are "fighting" each other and it results in unmovable parts. But they were always with a red flag and when you stood on the mate connector in the feature list it told you the mate over defines the assembly.
This time no such warning and nothing was red. All looked as normal but only worked as an animate or when moved by some of the other gears.
Comments
If you group two parts that have a mate between them, it should all go red. You should also not have a revolute between the shaft and the gear because the shaft would rotate with respect to the gear which you don't want. Fastened or group.
They did not have a mate between them, they both had a revolute to another part, the crankcase. I then grouped the shaft and the pinion gear as to move together.
This morning it would not move anymore, so I searched for what it could be and found the revolute from the shaft to the crankcase would release the movement again. Since the shaft is grouped with the gear it does not need this revolute strictly speaking, but at the same time it does not truly over define the assembly. But as it was it did stop the movement as I explained and now upon deleting the revolute of the shaft it works again.
Can this be explained?