| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate the detachment/attachment of a cutting plate and a cleaning work of dross after taking out the cutting plate. SOLUTION: At the lower position of a shifting course of a working head, a slit hole 21 is arranged on a work table 17. A plate base 29 continuously projects to the inside of the slit hole 21 from both side edges in the longitudinal direction of both side edges of the slit hole 21. In the projecting part 31 of the plate base 29, plural fixed bolts 33 are screwed at suitable intervals. To each of plural fixed bolts 33, each of plural slotted holes 35 arranged so as to be open at one side on one side end edge of the cutting plate 23 is fitted and fastened with each of plural fixed bolts 33. The cutting plate 23 is easily detached/attached only by loosening or fastening each of plural fixed bolts 33. Since there is no projected and recessed shapes on the side edge of the plate base 29, the dross is easily discharged.</p> |
