Machine and method for spark erosion machining of a gerotor pump
AssigneeSafran Aero Boosters SA
InventorsDavid Flore, Philippe Peiffer, Olivier Van Den Abeele
Life of this patent
Estimating the term…
Abstract
A spark erosion machine includes a frame with a space for spark erosion of a workpiece, a wire for cutting by spark erosion, and a wire guide head for guiding the wire across the workpiece, so as to detach an offcut from it; an offcut support mounted movably relative to the guide head, the support being configured to move at least between a retention position under the spark erosion space, where it can collect the offcut, and a retracted position; and an offcut extractor.
Claims19
A spark erosion machine, comprising:
- a frame with a spark erosion space for the spark erosion of a workpiece;
- a wire for spark erosion cutting;
- a guide for guiding the wire through the workpiece to cut an offcut from the workpiece;
- and
- a support for the offcut from the workpiece, mounted movably relative to the guide, the support being structurally and functionally configured to move at least between a retracted position, and a retention position under the spark erosion space in order to collect the offcut, the support comprising:
- a notch which is configured so that, in the retracted position, the wire is outside said notch, and in the retention position the wire is engaged in said notch, wherein the notch has an enlargement in which the wire is engaged in the retention position.
A spark erosion machine, comprising:
- a frame with a spark erosion space for the spark erosion of a workpiece;
- a wire for spark erosion cutting;
- a guide for guiding the wire through the workpiece to cut an offcut therefrom;
- a support for the offcut, the support being movably mounted relative to the guide, the support being configured to move at least between a retracted position, and a retaining position under the spark erosion space in order to collect the offcut;
- and
- an offcut extractor with an expandable portion structurally and functionally adapted for entering the offcut and to extract the offcut from the workpiece.
A spark erosion machining method in a spark erosion machine having a frame with a spark erosion space for the spark erosion of an initial workpiece, a wire for spark erosion cutting of the initial workpiece, a guide for guiding the wire through the initial workpiece to cut an offcut from it, and a movable support with a notch, the spark erosion machining method comprising:
- fixing the initial workpiece in the spark erosion machine;
- machining the initial workpiece by means of the wire so as to detach an offcut therefrom;
- and
- moving the movable support under the offcut so as to stop the gravitational descent of the offcut when it is detached from the initial workpiece by the wire when said wire is in the notch.
Dependencies are inferred from the claim text.