| 摘要 |
<p>According to the present invention, as an adapter, wherein an upper end portion is installed in a rotational shaft and a cutter blade is installed in a lower end portion, is not gotten out of an extended screw pipe installed in a front end portion of a body of a corner cutter to the outside, an exposure amount of a cutter blade can be accurately adjusted. When exchanging the cutter blade, the adapter is not spun with no traction for exchanging work of the cutter blade to be easily performed. According to the present invention, a portable corner cutter (100) comprises: an extended screw pipe (120) installed for a lower bearing (122) not to fall into a lower side by a snap ring (123); an external pipe (110) wherein a tool insertion hole (113) is inward formed in an outer circumferential surface; an adapter (130) wherein a key (134) is installed to be exposed in an outer side of an insertion unit (132) of a lower side of an adapter body (131); an upper bearing (106) wherein an upper surface is inserted into a rotational shaft (102) to be in contact with a bottom surface of a motor (103); a support bushing (150) wherein a flat surface unit (151) for inserting a spanner is formed in an outer surface; and a cutter blade (140) having a key groove (142) wherein the key (134) of the adapter (130) is inserted.</p> |
