Products

Linear High Grader (LHG)

Your complete automated grading solution

The Linear High Grader (LHG) is an automated grading machine for the planermill. LHG with DataFusion™ offers a true technical solution in the quest for fully automated grading. It integrates various complementary technologies to yield a highly accurate lumber grading system. CNM's approach is to scan the fiber in a single pass with several sensor technologies, then compare and verify the data from the differing technologies to achieve a highly accurate decision. We call this approach DataFusion.

The vision cameras see a hole, but our multiple technology DataFusion approach with x-ray tells us it's a pitch pocket.

Technologies employed include x-rays for density evaluation, lasers for geometric profile measurements, and 4-sided multi-channel vision to detect visual characteristics. The combination of these technologies allows classification and verification of lumber defects such as knots, stain, splits and shake, wane, rot, etc. and pith location down the entire length of the piece.

The simple, modular design of the LHG accepts all or a portion of these technologies within the unit's framework. Customers can elect to install a base geometric unit, then easily add additional technologies as their needs and budget dictate.

The LHG also offers MSR/MEL strength classification, wane evaluation, and skip control with the highest scan density in the industry in a very small footprint. The simple modular design allows easy upgrades to emerging technologies that will further expand defect scanning capability.

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