GB1204934A - Automatic lathe - Google Patents

Abstract

1,204,934. Automatic lathes. HEINEMANN A.G. WERKZEUGMASCHINENFABRIK GEB. 26 Aug., 1968 [25 Aug., 1967], No. 40728/68. Headings B3B and B3T. An automatic lathe comprises a linearly movable tool magazine 9 which carries tools 11-20 in side-by-side relationship and which is supported on a guide 10 which extends parallel to the lathe bed 1, a tool changer 14 which transfers a tool from the magazine 9 to a tool mounting on a cross slide 4 and vice versa simultaneously, the tool changer being supported on the cross slide which in turn is mounted on a longitudinal slide 2. The tool changer consists of two arms 15, 16, which are displaceable along and pivotable simultaneously about a shaft 19 which extends at right angles to the axis of the chuck 8 the arms respectively removing a tool from the magazine and transferring it to the mounting station on the cross and simultaneously removing a used tool from the tool station and depositing it in the magazine. The pivoting motion of the arms is effected from a motor via gearing and a maltese cross mechanism 75 and the axial displacement of the arms along the pivot shaft 19 is effected by fluid pressure actuated piston and cylinder units 52, 61, whereby the pivoting action of the arms is only permitted with the arms axially spaced from each other thereby avoiding interference when the pivoting action is effected. The arms of the tool changer are each provided with spring and fluid actuated jaw members 17, 18 which engage and retain the respective tools during the changing operation, the tools 39 and 23 being subsequently clamped in the tool mounting station and the magazine respectively by fluid pressure and lever-actuated T-members 6 and 32 respectively. A code reader device 21 is provided adjacent the magazine to permit selection of the required tool in relation to the predetermined cycle of operation of the machine.