GB802162A - Automatic workpiece transfer mechanism for machine tools - Google Patents

Abstract

802,162. Blanks transferring. SOC. ORNANAISE DE CONSTRUCTIONS MECANIQUES S.O.C. July 21, 1956 [April 14, 1955], No. 21105/55. Classes 83 (3) and 83 (4). An automatic workpiecetransfer - mechanism for a press or a milling, drilling or shaping - machine, has a clamp-member 4, Fig. 5, adapted to engage a workpiece 6 on a supply table 7, raise it vertically, move it in an angular path about a spindle 5 into a position above a working-tool 8, and lower it vertically into position on the tool, the movements of the clamp being controlled by a pneumaticdistributer 3. The clamp Fig. 13, comprises a pair of gripping fingers 57 carried by arms 54 pivoted at 55, and biased into open position by a spring 58. The arms 54 are opened, so as to close the fingers on a workpiece, by a piston 60 movable in a cylinder 51 and having a conicalend 61 which engages noses 53 on the arms. The clamp is controlled by a slide-valve 21, Fig. 8 (not shown), in the distributer, actuated by screws 72, 77, Fig. 4 (not shown), and is mounted through a T-slot connection 47, 48, Fig. 5, in an arm 41 adapted to swing about the stationary pivot 5. The connection 47, 48, which may be locked by nuts 49, 50, enables the height of the clamp to be adjusted. The arm 41 has a rack-quadrant 45 in engagement with a pinion 46, by which the angular position of the clamp may be adjusted. The angular movement of the clamp is produced by a slide 2 actuated by a double-acting piston 10 in a cylinder 9. The clamp-arm 41 is moved vertically by an extension 31 of the spindle 5, actuated through a pivoted-arm 28 by a piston-rod 24 working in a double-acting cylinder in the distributer 3. Slide-valves actuated automatically by the movement of the slide 2, Fig. 5, control the supply of compressed-air to the cylinders. A blower 17, Fig. 5, supplied with compressed-air under the control of a slide-valve in the distributer, ejects the workpiece from the tool 8. The workpieces are fed to the pick-up position on the worktable 7 by a pneumatic motor 64.