Structure for detachably mounting a horizontal drill head

Abstract

A structure for detachably mounting a horizontal drill head 5 on a drill head 4 including a driving spindle 10 rotatably driven by a driving means, a head case 2 for holding the driving spindle 10 above a work table 26 on which a work or works “W” are placed, and an advancing/retracting means for moving the driving spindle 10 toward and from the work table 26. The horizontal drill head 5 has a driving shaft 1 that is connected to the driving spindle 10 and horizontal drills 29 which are arranged substantially perpendicular to the axial direction of the driving shaft 1. The horizontal drill head 5 is mounted on the drill head 4 via a guide pin 7 slidable within a bearing 6 that is mounted on a sidewall of the head case 2 along a direction parallel to the advancing/retracting direction of the driving shaft 1.

Dependencies are inferred from the claim text.