SPARK EROSION TOOL AND ELECTRODE FOR A SPARK EROSION TOOL

A spark erosion tool (101, 102) is defined which comprises an electrode (301, 302) arranged on a tool longitudinal axis (2) and an electrode holder (401 . . . 417) aligned along the tool longitudinal axis (2) and arranged on the latter and connected to the electrode (301, 302). The electrode holder...

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Bibliographische Detailangaben
1. Verfasser:	METZNER KLAUS
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL TRANSPORTING WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL
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Beschreibung
Zusammenfassung:	A spark erosion tool (101, 102) is defined which comprises an electrode (301, 302) arranged on a tool longitudinal axis (2) and an electrode holder (401 . . . 417) aligned along the tool longitudinal axis (2) and arranged on the latter and connected to the electrode (301, 302). The electrode holder (401 . . . 417) comprises means for moving the electrode (301, 302) relative to the electrode holder (401 . . . 417) and means (6, 11, 12, 13, 15) for applying pressure acting transversely to the tool longitudinal axis (2) in the area of an imaginary hose (7) extending in the tool longitudinal axis (2), which has a cross section corresponding essentially to the electrode (301, 302). Furthermore, a method is defined of how the spark erosion tool (101, 102) can be used. In addition, an electrode (302) is defined for a spark erosion tool with a cylinder surface or a spherical surface, in which at least one groove (35) connected to a bore (36) is arranged. Lastly, a method for producing a deflecting bore (48) in a drill string part (47) is described which connects two straight flushing bores (39, 41) and which is produced in a curved manner by spark erosion.