Sunds Defibrator Woodhandling Oy

Metso Woodhandling Oy

Alpo Kalliokoski

Hannu Tahkanen

Aaro Klaavu

A method for adjusting the blade clearance in a disc chipper by moving in the axial direction a bearing bushing of a disc shaft together with the bearing. The axial movement of the shaft is effected by loosening adjusting screws or adjusting nuts of one of the end caps of the axial guide bearing housing and by tightening after this the adjusting screws or adjusting nuts of the other end cap. The cap then pushes the axial guide bushing and the attached shaft in the axial direction by way of a guide projection on the surface of the cap facing towards the bearing. An axial guide bearing system includes a shaft supporting a blade disc of a disc chipper, with the shaft and blade disc being movable relative to a counter blade in an axial direction. The system also includes a bearing housing frame and a bearing fixed to the shaft and movable with respect to the bearing housing frame. A pair of end caps is detachably secured to opposite ends of the bearing housing frame and a pair of guide projections extend between one of the end caps and the bearing. The outer surface of the bearing housing frame is shorter in the axial direction than the structure formed by the bearing and the guide projections.

Method for adjusting blade clearance in a disc chipper and axial guide

A chipping control device (9) to be mounted on a disc chipper and a disc chipper for keeping the piece size of the chips (8) removed from the wood (1) with a chipper blade (6) uniform. The chipping control device (9) is mounted on the outer surface of the blade disc (4) on the opposite side of the blade (6) such that the control device (9), when using the chipper, contacts the chips (7, 8) leaving the chipping opening (13).

Chipping control device and disc chipper

A method for the feeding of long pieces of wood into a disc chipper against a disc (3) equipped with blades in such a way that the piece of wood encounters the bladed disc at a sharp input angle, and a disc chipper. The sharp input angle is achieved by combining with the sharp inclination (.perspectiveto.) of the feeder chute (5) a sharp level slanting angle, whereupon the inclination of feeder chute (5) will be sufficient to feed wood against the blade disc.

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Pori, Finland

Alpo Kalliokoski