| 摘要 |
<p>A tool positioning apparatus which is adapted to position by numerical control a plurality of pairs of tools attached to a pair of parallel shafts so that longitudinal slits, scores or the like may be produced along a web of board such as corrugated board conveyed through between said pair of shafts is provided with a tool positioning apparatus, said apparatus comprising tool feed control devices which are provided correspondingly to the number of said pairs of tools and are movable respectively on a guide member disposed parallel to said shafts by driving motors which are numerically controlled by a positioning controller and which have shifters insertably engageable with pairs of tool holders corresponding thereto respectively on which said pairs of tools are fixed; and a moving device which enables said shifters to engage with and disengage from simultaneously said pairs of tool holders corresponding thereto respectively.</p> |
