Ball joint assembling

[sudhakarn]

Hi folks,
I got a basic question on ball joint assbly.I want to know whether the inner ball is machined to fit it inside the outer ball?or is it fitted directly without any machining.

 

[BEMPE16524]

there are few methods on doing this. here are few examples:
1.

https://www.youtube.com/watch?v=Kpj9ggXpKOE

2.

https://en.wikipedia.org/wiki/Ball_joint#/media/File:Tie-rod.JPG

R.Efendy