| 摘要 |
One aspect of the invention is a method of rapidly drilling holes in a workpiece on a drilling machine having first and second spindles holding first and second drill tools, a first and second pressure foot mounted on the first and second spindles and a work table mounted beneath the spindles on which workpieces can be mounted. The method includes selecting a workpiece having a thickness, defining a nominal vertical home position for the first and second spindles, such that in the home position there is a nominal clearance distance between the bottom surface of the spindle's pressure foot and the top surface of the workpiece to be positioned beneath the spindle, measuring a drill tool offset distance for the first and second spindles such that the drill tool offset distance is equal to the distance between the bottom surface of the pressure foot of the spindle and the tip of the drill tool mounted in the spindle, compensating for the drill tool offset distance by designating a vertical upper limit for the first spindle and a vertical upper limit for the second spindle such that when the first and second spindles are at their respective upper limits, the tips of their respective drill tools are positioned in equal distance from the top surface of the work table, and accordingly, the top surface of the workpiece mounted thereon.
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