Phase change device of screw blade between screw shaft and processing device equipped with screw shaft

摘要

Phase change device and screw of screw blade between screw shafts capable of making the phase control of screw blades high precision and reducing the ability of processing of the screw blade while making it possible to reduce the size and cost of the screw blade with a simple mechanism Problem to be solved: to provide a processing apparatus having an axis. The phase change apparatus 10 according to the present invention is a first gear assembly of a first embodiment of the present invention, wherein a gear train interposed between a gear 12C of the first screw shaft 12 and a gear 13C of the second screw shaft 13, a linkage mechanism for connecting the shafts of the respective gears to each other, and a first gear pair are connected via a gear train and a linkage mechanism An operation handle 20 for changing the phase of the second screw vanes 13a to the screw vanes 12a is provided.