Knurling machines are used knurled or ridged surface in the bond zone of a composite profile. A knurled groove significantly increases the grip and the bond between two connected profiles. Knurling is therefore a cost-efficient way to optimize the static strength of profiles.
If you want to know more about knurling machines, Müller TB Technologies AG is your first point of contact.
Profiles are knurled with the compound grooves facing down. Mainly used in the combined knurl/assembly process. Optionally CNC controlled.