Always in focus…

The Autofocus system from OR Laser is a unique focussing
system for laser units that regulates the distance to the
precision part to be processed online.
The uniqueness of the system is based on a measuring
method, which is carried out coaxially to the processing
laser. This means the distance is measured directly in the
focus point of the laser and evaluated in the same axis.
Hence you are able to work contact-free and independent
of direction, and control the distance precisely even in
deeper bores or crevices.

Mode of operation

A laser beam of a wavelength of 655 mm is coaxially coupled
in the processing laser. The radiation diffused back from
the precision part is absorbed by the sensor at a scanning
rate of 750 Hz and evaluated by means of interferometry.
The distance so determined is transmitted in the form of a
digital signal and processed in a computer aided manner.
A controller controls the drive of the lens positioning at a
precision rate of up to 50 µm.

Field of application

· Manual laser and build-up welding:
In this process the time-consuming focussing of the laser
beam onto the precision part is undertaken independently
of Autofocus. Hence, the operator can concentrate on the
two dimensional processing.
The third dimension is controlled by Autofocus!

· Automated laser joint welding and powder build-up welding:
A fully automatic laser welding process is only conditionally
achievable due to the lack of CAD data or components of
limited tolerance. The laser beam must be consistently
readjusted during the process, which demands an automated
focussing unit correction/adjustment.
A two dimensional automated processing can be mastered
easily without any problems.
The third dimension is controlled by Autofocus!

Your benefits

Increased precision and speed together with an increase in productivity by up to 50%.
Constant laser parameters on the precision part.
Optimal results due to adherence to the process parameters.