Apparatus for surfacing flitch
An apparatus for surfacing a flitch by cutting material from its radially outer surface to prepare the flitch for veneer slicing or other uses. The apparatus comprises a cutterhead rotatable about a cutterhead axis. The apparatus further comprises a carriage comprising a ring that rotates about a carriage axis and a pivot arm that carries the cutterhead and is coupled to the rotatable ring for pivoting movement about a pivot arm axis. The apparatus further comprises a flitch contour accommodation device coupled to the pivot arm and to the cutterhead to permit rotation of the cutterhead about a device axis that is generally transverse to the cutterhead axis.
1. An apparatus for surfacing a flitch by cutting material from the flitch's radially outer surface to prepare the flitch for veneer slicing or other uses, the apparatus comprising
a cutterhead having a first axis about which the cutterhead rotates and
a first cutterhead oscillator to oscillate the cutterhead about a second axis back and forth about the flitch as the flitch passes the cutterhead to cut material from the radially outer surface of the flitch, the second axis extending generally in the direction of motion of the flitch past the cutterhead, and
a second cutterhead oscillator coupled to the first cutterhead oscillator and the cutterhead to oscillate the cutterhead back and forth about a third axis transverse to the first axis.
2. The apparatus of claim 1 comprising a flitch support to support the flitch as the flitch passes the cutterhead, a longitudinal axis of the flitch support being generally coextensive with the second axis.
3. The apparatus of claim 2 wherein the first cutterhead oscillator comprises a pivot arm having a fourth axis about which the pivot arm is pivotable to move the first axis radially toward and radially away from the radially outer surface of the flitch, the fourth axis being generally parallel to the first axis.
4. The apparatus of claim 3 wherein the first cutterhead oscillator comprises a cam and a cam follower to follow the cam to oscillate the cutterhead.
5. The apparatus of claim 1 wherein the second cutterhead oscillator comprises a flitch contour accommodation device to allow movement of the cutterhead in response to changes in the contour of the radially outer surface of the flitch.