Assembly Joints for Collision Detection

[Anonymous]

Respected all, 
I've been trying to animate my assembly and want to make a sliding contact on inclined surfaces. Kindly guide me a bit what should i do?. 

[Anonymous]

@Anonymous thank you for sharing your problem with the community.

For joining the objects you need to select the face of components which you are joining and after selection of face you need to give the constraints to the object regarding motion.

and I am attaching the details of joining components

[Anonymous]

Sir thank you for your response. I tried this but couldn't. I'm attaching the file kindly if you can do this, please make a short video or snap, so that i can understand. 
Many many thanks.