The invention discloses a self-adaptive variable-
diameter spiral groove
numerical control machining method and device based on wood curvature
perception, and belongs to the technical field of wood spiral groove
machining. The method comprises the following steps that S1, wood feeding and positioning are conducted, square timber to be machined is fixed through a self-adaptive clamp, and it is ensured that the axis of the square timber is aligned with the
machining standard; s2, real-
time data collection is conducted, specifically, the front face, the back face and the two side faces of the
batten are scanned through multiple sets of
laser displacement sensors, the curvature and
moisture content data of the wood are collected in a high-precision mode through the multiple sets of
laser displacement sensors, and a customized
tool path matched with irregular deformation of the wood is generated in combination with a least square method curvature
fitting algorithm; and meanwhile, a
cutting pressure dynamic compensation mechanism is matched, the
cutting pressure is stabilized within a reasonable range, heat expansion and cold contraction deformation of the groove profile is avoided through composite cooling shaping after machining, finally, the groove profile machining precision reaches + / -0.05 mm, the problems that traditional fixed parameter machining is poor in adaptability and low in size consistency are thoroughly solved, and the follow-up
assembly difficulty is greatly reduced.