| 摘要 |
An apparatus for adjusting the vertical position of drills in a multiple spindle drilling machine comprising drills attached in upper and lower two lateral rows to a gear box of the multiple spindle drilling machine, said two groups of the drills being arranged so that the drills of the respective groups can be simultaneously moved in the vertical direction, a motor for driving and rotating the two groups of the drills, a moving device disposed to connect said two groups of the drills so that they are moved in the vertical direction according to the height of drilling positions of a material to be processed, and a positioning device attached to the gear box to regulate the vertical movement of the drills of the respective groups within a certain range and set the vertical position thereof.
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