Abstract: A working table apparatus for a cutting machine tool comprising a working table slidably mounted on a bed of the machine tool, and positioning members mounted on the under side of the working table that are selectively projectable from or retractable into a work supporting surface of the working table. The positioning members comprise a group including a first plurality of positioning members arranged in a row either in a direction parallel with the sliding direction of the working table or in a direction perpendicular thereto and at least one second positioning member arranged offset from the row of the first positioning members.

Abstract: A suction pad (A) is adapted to be placed on a suction table (2) a plurality of openings (2a) connected to a negative pressure generating source (3) in order to fix a work piece (W) by suction on a top surface (5d) of the suction pad (A). The suction pad (A) includes a communicating passage (5a, 5b, 5c and 6a) for communicating the top surface (5d) with a bottom surface (6b) of the suction pad (A) and for communicating negative pressure from the openings (2a) of the suction table (2) to the top surface (5d) of the suction pad (A) when the suction pad (A) is placed on any one of the openings (2a) of the suction table (2). A magnet (10) is provided for attracting a plug (4) for normally closing each of the openings (2a) of the suction table (2) so as to communicate the negative pressure generating source (3) with the communicating passage (5a, 5b, 5c and 6a).

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.