A device for machining a work piece creates an electrical potential between an electrode and the work piece or another conducting body proximate to the work piece. The electrical potential establishes an electrical field within the work piece that is expected to repel electrons and create a region of positively charged ions which repel one another. This region is expected to be weakened and material is expected to be removable from this region of the work piece using less force and energy than when machined by traditional machining techniques.

The disclosed embodiments include a housing of a handheld mobile device. The housing includes a ceramic layer forming a continuous outermost surface of the handheld mobile device, and an antenna layer adjacent to the ceramic layer. The antenna layer including conductive elements formed from a metal injection molded substrate, and an antenna break formed of non-conductive material electrically separating the conductive elements to collectively form an antenna of the handheld mobile device that is hidden by the ceramic layer from an exterior view of the handheld mobile device.

The present invention provides a continuous machining system, which comprises an electrochemical machining module, a separating module, and a vibration reducing module. The electrochemical machining module performs an electrochemical machining to a material strip for forming a plurality of components on the material strip. The separating module separates the plurality of components from the material strip. Thereby, the machining time is saved, and thus achieving the purposes of continuous machining and mass production. The vibration reducing module is located between the electrochemical machining module and the separating module. The vibration reducing module can ease the vibration of the material strip. Consequently, the influence of vibration on the electrochemical machining precision of the material strip machined by the electrochemical machining module may be minimized.

The present invention provides a continuous machining system, which comprises an electrochemical machining module, a separating module, and a vibration reducing module. The electrochemical machining module performs an electrochemical machining to a material strip for forming a plurality of components on the material strip. The separating module separates the plurality of components from the material strip. Thereby, the machining time is saved, and thus achieving the purposes of continuous machining and mass production. The vibration reducing module is located between the electrochemical machining module and the separating module. The vibration reducing module can ease the vibration of the material strip. Consequently, the influence of vibration on the electrochemical machining precision of the material strip machined by the electrochemical machining module may be minimized.

Ceramics or ceramic layer systems can be machined due to the use of high speeds of an EDM electrode. Disclosed is a method and an EDM device for carrying out the method for drilling ceramics or ceramic-coated components, which uses an EDM electrode and wherein the EDM electrode is rotated at a speed of at least 1000 rpm, in particular of at least 10,000 rpm, for drilling through the ceramic or through the ceramic-coated component.

Ceramics or ceramic layer systems can be machined due to the use of high speeds of an EDM electrode. Disclosed is a method and an EDM device for carrying out the method for drilling ceramics or ceramic-coated components, which uses an EDM electrode and wherein the EDM electrode is rotated at a speed of at least 1000 rpm, in particular of at least 10,000 rpm, for drilling through the ceramic or through the ceramic-coated component.

A downhole tool, for removing sections of metal tubing, said downhole tool comprising at least one conductive element being arranged to corrode a section of metal tubing using an electrolytic process, said conductive element being made of electric conductive material, an apparatus to establish a connection to the metal tubing, and a source of electrical power.

A machine for machining a workpiece having a first central longitudinal axis passing through a workpiece plane that is disposed orthogonally relative to the first central longitudinal axis is provided. The machine includes a chuck or fixture on which the workpiece is disposable, a grinding spindle having a body, a wheel supporting an abrasive and an insulator electrically isolating the wheel from the body, the wheel being operable to remove material from the workpiece, the grinding spindle having a second central longitudinal axis about which the grinding spindle rotates, the second central longitudinal axis of the grinding spindle passing through the workpiece in the workpiece plane so as to create a continuous gear tooth on the workpiece and an electrochemical grinding (ECG) element configured to execute ECG processing on the grinding spindle and the workpiece to soften the workpiece as the gear tooth is being created by the grinding spindle.

A machine for machining a workpiece having a first central longitudinal axis passing through a workpiece plane that is disposed orthogonally relative to the first central longitudinal axis is provided. The machine includes a chuck or fixture on which the workpiece is disposable, a grinding spindle having a body, a wheel supporting an abrasive and an insulator electrically isolating the wheel from the body, the wheel being operable to remove material from the workpiece, the grinding spindle having a second central longitudinal axis about which the grinding spindle rotates, the second central longitudinal axis of the grinding spindle passing through the workpiece in the workpiece plane so as to create a continuous gear tooth on the workpiece and an electrochemical grinding (ECG) element configured to execute ECG processing on the grinding spindle and the workpiece to soften the workpiece as the gear tooth is being created by the grinding spindle.

A machine for machining a workpiece having a first central longitudinal axis passing through a workpiece plane that is disposed orthogonally relative to the first central longitudinal axis is provided. The machine includes a chuck or fixture on which the workpiece is disposable, a grinding spindle having a body, a wheel supporting an abrasive and an insulator electrically isolating the wheel from the body, the wheel being operable to remove material from the workpiece, the grinding spindle having a second central longitudinal axis about which the grinding spindle rotates, the second central longitudinal axis of the grinding spindle passing through the workpiece in the workpiece plane so as to create a continuous gear tooth on the workpiece and an electrochemical grinding (ECG) element configured to execute ECG processing on the grinding spindle and the workpiece to soften the workpiece as the gear tooth is being created by the grinding spindle.