Following the gluing of the panel edge, the front and rear edgeband excess has to be trimmed to the correct length. This is done by a trimming saw unit. Exceptions are machines of some producers, which trim coiled edges with the pneumatic trimmer, for example machines made by BiesseEdge, on BIESSE EDGE Edge-Control, and machines which apply the corner rounding unit for trimming, like for example HOLZ-HER SPRINT 1411-1 or the IMA QUADROMAT R3.
Usually at first the two opposite edges are applied to the workpiece and trimmed by a 90° cut. While trimming, the already glued edge risks to be cut and damaged. In order to avoid this, the motors of the trimming saw unit can be tilted up to 30 °. The tilt is done manually or pneumatically.
The difficulty of the trimming is that the movement of trimming saws has be at an angle of 90 degrees (vertical or horizontal) to the feed movement of the workpiece. For this reason, the cut-off saws are moving with the workpiece. Technically, this vertical-horizontal movement is carried out in different ways:
Concerning the maximum feeding speed of an edgebander, the trimming station is often the limiting factor. Hereinafter enumerated characteristics decide on the speed of the trimming process: