Method and apparatus for measuring the grain angle of a round wood object

摘要

This invention provides a method and apparatus for determining the grain angle of a wood object which has a circular cross section of constant or varying radius along the object's length. This apparatus may be hand-held or fixed mounted as testing circumstances dictate. The resulting grain angle may be displayed in real time, as perceived by the user, or transmitted to a processing unit for data collection or interpretation.

主权项

1. An improved apparatus for measuring grain angle in a round wood object, said round wood object having an axis and a substantially circular cross-section with or without varying radius, comprising an electronic grain angle measurement means with a dielectric wood grain angle sensor means having a center point, a positioning means for aligning said round wood object such that a point on a surface of said round wood object is in close proximity to said center point of said dielectric wood grain angle sensor and said axis of said round wood object is at a known relationship to an axis of said dielectric wood grain angle sensor, a compensation means for reducing the effects of electric field distortion by said round wood object, and an indicator means, whereby the grain angle of a round wood object is determined.