| 摘要 |
90-467 In a forming tool, used in the production of an anode before the firing, for forming peg holes, which forming tool has a cap plate to which at least one retaining pivot, with one end, is attached in such a way as to be fixed in terms of rotation, on which retaining pivot an essentially cylindrical forming body is rotatably mounted, on whose outer wall projections having the same slope relative to the axis of the forming body are provided, the respective angular position of the projections, after removal of the forming tool, is indeterminate inasmuchas the forming body can rotate further after release from the anode, and consequently the projections during production of the next unfired anode, can be located in a different angular position relative to the wall of the peg hole of the anode produced beforehand, with the result that automatic cleaning of the grooves formed out in the anode by the projections is made more difficult after the firing of the anode. A forming tool having a stop, which is fixed to the cap plate and limits the rotation of the forming body in one direction and an elastic means which on the one side is connected so as to be fixed to the cap plate and on the other side is connected to the forming body and preloads the latter 90-467 against the stop ensures that its projections always form the grooves in the wall of the peg hole in the same angular position relative to the finished anode, as a result of which cleaning of the peg hole by an automatic cleaning machine is made possible.
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