BEARING STRUCTURE OF MOVABLE EDGE TOOL IN CASTING BREAKING APPARATUS, MOVABLE EDGE TOOL EQUIPPED WITH THAT BEARING STRUCTURE AND STRUCTURE OF OUTLET OF FIXED EDGE TOOL

摘要

The movable edge tool can oscillate freely through a bearing structure provided at the lower end of a frame, and the bearing structure is constituted of a bearing supporting case (80) provided on the frame (3), a shaft (82) provided in the bearing supporting case, a lower bearing piece (83) provided on the lower side of the shaft, and a recess (500) opened at the lower end of a tool supporting portion (50). At the lower end of the tool supporting portion, the lower bearing piece is supported by means of a latching device and the movable edge tool is supported rotatably on the shaft. In the bearing structure of the movable edge tool in a casting breaking apparatus, bearing side of the tool supporting portion is made thicker than the body portion thereof and the rear side is formed to swell at the bearing portion of substantially parallelogram when viewed from the front.