Ball - clamping with the optics
The glass ball focuses the laser beam directly below the ball and simultaneously presses the parts together by the connected compressed air.
A part of the compressed air escapes continuously the ball can rotate freely in the cylindrical socket. In addition, the escaping compressed air protects the ball from impurities and cools it at the same time.
If the ball optics is raised from the parts, the glass ball closes the opening so that compressed air is no longer consumed.
Due to the small ball diameter of 12 mm, it is also suitable for small component radii and limited space.
With an air pressure of 6 bar, a contact pressure of around 60 N can be achieved, which is sufficient for foils and thin parts. For thicker parts, which may have to be deformed for welding to overcome gaps, the ball optics is not suitable.