why product rotate in Catia assembly when use contact constraint?

[Bodesya]

Hi
ia have a problem when i set contact constraint on two surface those surface contact But one of them rotate 180deg
how can i choose to rotate piece or not when using contact constraint?
here two picture of my problem

http://files.engineering.com/getfile.aspx?folder=48a9fba5-b45f-42bd-89fa-8f0bafaace0c&file=1.PNG

http://files.engineering.com/getfile.aspx?folder=f81cd8f7-da7d-4ffe-b729-457bc5280655&file=2.PNG

thanks

 

[jackk]

You need to define an angular constraint between the two parts. Something like a Parallel between centerplanes.

 

[itsmyjob]

solid face are oriented outside the solid, by selecting the 2 planar face catia also match opposite direction.

for what you want you should use coincidence with same direction

Eric N.
indocti discant et ament meminisse periti ​