| 摘要 |
PROBLEM TO BE SOLVED: To constitute one ridge edge maker so as to enable moving operation without changing the position of one maker to left or right side of machine body and enable additional attachment in compact state. SOLUTION: This ridge edge maker 46 has a stay member 48 capable of selectively carrying out moving operation on left and right sides around a rotating shaft 50 disposed at nearly center position of left and right in the front of machine body and a fixing bracket 67 for fixing the base part side of the stay member 48 to a machine body frame. As a result, it is made possible to carry out moving operation of one ridge edge maker 46 onto left and right side of the machine body. Since the ridge edge maker 46 is fixed to the vicinity on the inside in the longitudinal direction than a connecting shaft 63 by the fixing bracket 67, the marker 46 is stably retained without preventing change of the posture.
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