Patent ID: 9718122
Date: 2017-08-01
CPC Classifications: B22C

Claim:
1. An apparatus for producing a piston, comprising: a casting mould with an axially open cavity defining a surrounding cavity wall, the cavity wall being profiled to receive an annular core to define a cooling duct geometry; a core holding device adjustable in an axial direction for introducing the core into the casting mould, wherein the core holding device includes a gripping device including a plurality of spreadable first grippers defining a plurality of associated mounting regions respectively facing radially towards the cavity wall, the plurality of first grippers being adjustable at least between a first position, in which the plurality of first grippers are arranged in a radially innermost position and define a diameter less than the core, and a second position, in which the plurality of first grippers transition radially outwards in relation to the first position and support the core via the plurality of associated mounting regions; and at least one of: