Drilling tool and method for machining a conductive workpiece

• Main Authors: LUO YUANFENG, MCNAMARA JEREMY GORDON, TRIMMER ANDREW LEE, HOSKIN ROBERT FRANK, NIETERS EDWARD JAMES, MORICCA TIMOTHY MICHAEL
• Format: Patent
• Language: Chinese; English
• Published: 15.02.2017
• Subjects: GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; 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

A drilling tool (112) is provided for use in machining a conductive workpiece. The tool includes a body portion (134), a front electrode (136) coupled to the body portion (134), and at least one side electrode (140, 144, 184) coupled to the body portion (134). When electrical current is supplied to the front electrode (136) and the at least one side electrode (140, 144, 184), material is removed from the conductive workpiece adjacent to the front electrode (136) and the at least one side electrode (140, 144, 184). The front electrode (136) and the at least one side electrode (140, 144, 184) are selectively operable to form a bore having a variable geometry extending through the conductive workpiece (102) when the material is removed therefrom. 提供种用于在加工导电工件(102)时使用的钻孔工具(112)。工具包括本体部分(134)、联接到本体部分(134)上的前电极(136)，以及联接到本体部分(134)上的至少个侧电极(140，144，184)。当电流供应到前电极(136)和至少个侧电极(140，144，184)时，从导电工件(102)移除前电极(136)和至少个侧电极(140，144，184)附近的材料。当从导电工件(102)移除材料时，前电极(136)和至少个侧电极(140，144，184)选择性地可运行来形成延伸通过导电工件(102)的膛孔，膛孔具有可变的几何构造。