Patent GB-1489627-A (GB)
Title: Rake type cooling bed for round and polygonal sections
IPC: B21B43/02
Filed: 1974-11-07
Abstract: 1489627 Cooling beds MANNESMANN AG 7 Nov 1974 [19 Dec 1973] 48213/74 Heading B3M A valve type cooling bed for round or polygonal tubes or bars includes parallel fixed rakes 1 and movable rakes 2, each fixed rake having teeth 17 (Fig. 2) with an upgoing face 18 inclined at 20 to 30 degrees to the horizontal, and with rounded tips, and each movable rake having teeth 21 with a pushing face 22 at right angles to a corresponding face 18. Each movable rake can follow a path such as that shown in dash-dot lines such that a workpiece 26 follows the path 25, resulting in a relatively gentle lowering of the workpiece on to the next adjacent space. The movable rakes 2 (Fig. 1) are each moved by an actuator 5 which reciprocates a support 3 along rollers 7. The rollers are mounted on levers 8 which are themselves movable by an actuator 13 in synchronism with the actuator 5 in order to vary the vertical travel of the rakes. 1489643 Tool changers WERKZEUGMASCHINENFABRIK OERLIKONBUHRLE AG 20 March 1975 [22 March 1974] 11578/75 Heading B3B A tool change mechanism for a horizontal drilling-milling machine comprises an independently mounted magazine 7 having a chain conveyer 8 carrying tools 9 with their axes at right angles to the machine tool spindle 3, a magazine carriage 63 movable vertically along tracks 76, 78 of the magazine, a gripper carriage 21 movable horizontally and parallel to the spindle 3 along guides 69, 71 on the magazine carriage 63, a gripper rocker 17 pivotally mounted in the gripper carriage 21 by a shaft 19 and pivotable through 90 degrees between a position adjacent the magazine and a position adjacent the spindle, a gripper arm 15 pivotally mounted in the rocker 17 by a shaft 46 to pivot through 90 degrees from a position parallel to the tools 9 in the magazine to a position parallel with the spindle 3, and a gripper vane 13 having a pair of gripper tongs 11, 12, respectively, at each end and being pivotable by a shaft 14 through 180 degrees. A tool change can take place at different vertical heights of the spindle headstock 4 along the Y-axis and at different horizontal positions of the spindle 3 along the Z-axis parallel to the spindle 3. The spindle 3 has three tool change positions along the Z- axis depending upon the length of the tool and/or the size of a workpiece on a work-table 5. The gripper carriage 21 is moved horizontally to the required position of the spindle by a first cylinder 62 having preset stopping positions I, II and III. A second cylinder 65, sharing a common piston-rod 61, moves the carriage 21 over a shorter distance to extract or introduce a tool from or into the spindle 3 and the magazine conveyer 8. The pivotal movement of the rocker 17 is counterbalanced by a spring pack (55) (Fig. 7, not shown), and the weight of the magazine carriage 63 is counterbalanced by a cylinder 90 and piston and rod 91. The tracks 76, 78, and guides 69, 71 comprise rods engaged by rollers. The magazine carriage 63 is moved vertically by a screw and ball nut drive 87, 88, 89. The machine tool comprises a column 1 movable along a bed 6, and a spindle headstock 4 movable vertically along the column 1.