Processing of large diameter logs


The process

Processing of large diameter logs means handling of logs with large end diameters up to 65 cm which makes up the biggest amount of logs to be sawn. Logs with still bigger diameters can be neglected for industrial processing with regards to quantity and quality.

Even for logs with up to 65 cm large end diameter, the profiling technology is the most economical production process by specially designed machines and parameters.


The field of application

  • Production of softwood lumber with up to 65 cm large end diameter
  • High efficiency by using the profiling technology
  • Feed speed up to 130 m/min.
  • Production of up to ten wanefree sideboards without separate board edger plant
  • Excellent size accuracy and lumber surface

The production flow

3D-scanning of sawlogs
3D-scanning of
sawlogs
Production of a two-sided cant
Production of a
two-sided cant
3D-scanning of the two-sided cant and sideboard reoptimisation
3D-scanning of the
two-sided cant and
sideboard reoptimisation
90° turning of the two-sided cant
90° turning of the
two-sided cant
Production of a four-sided cant
Production of a
four-sided cant
3D-scanning of the four-sided cant and sideboard reoptimisation
3D-scanning of the four-sided cant
and sideboard
reoptimisation
Profiling of the corners for planks and/or sideboards
Profiling of the
corners for planks
and/or sideboards
Sawing of sideboards
Sawing of sideboards
Separation of sideboards
Separation of sideboards
Profiling of additional corners for producing sideboards
Profiling of additional
corners for producing
sideboards
Sawing of planks or sideboards
Sawing of planks or sideboards
Separation of planks or sideboards
Separation of planks or sideboards
90° turning of the four-sided cant
90° turning of the
four-sided cant
Profiling of sideboards
Profiling of side-
boards
Sawing of sideboards
Sawing of sideboards
Separation of sideboards
Separation of sideboards
Splitting of centre products with horizontal split saw
Splitting of centre products with
horizontal split saw
Splitting of planks (vertical grain cut)
Splitting of planks (vertical grain cut)
Separation of slats
Separation of slats