When a Z axis is moved while interrupting or continuing taper machining, a wire electric discharge machining control apparatus controls position of a UV axis by re-creating a taper deviation vector, based on a distance between upper and lower guides, such that a wire tilt angle does not change.

When a Z axis is moved while interrupting or continuing taper machining, a wire electric discharge machining control apparatus controls position of a UV axis by re-creating a taper deviation vector, based on a distance between upper and lower guides, such that a wire tilt angle does not change.

In a wire electric discharge machine of the present invention, a control variable detection apparatus is an inter-pole voltage detection apparatus and detects an average inter-pole voltage as a control variable correlating with an inter-pole distance. The wire electric discharge machine comprises a machining feed speed calculation apparatus determining a machining feed speed on the basis of a deviation between target voltage set by a target value setting apparatus 7 and the average inter-pole voltage so as to eliminate the deviation. The wire electric discharge machine further comprises a feed speed distribution apparatus and a relative movement apparatus. The inter-pole distance can be kept constant by the relative movement of a wire electrode and a workpiece made on the basis of a command of thus determined machining feed speed.

In a wire electric discharge machine of the present invention, a control variable detection apparatus is an inter-pole voltage detection apparatus and detects an average inter-pole voltage as a control variable correlating with an inter-pole distance. The wire electric discharge machine comprises a machining feed speed calculation apparatus determining a machining feed speed on the basis of a deviation between target voltage set by a target value setting apparatus 7 and the average inter-pole voltage so as to eliminate the deviation. The wire electric discharge machine further comprises a feed speed distribution apparatus and a relative movement apparatus. The inter-pole distance can be kept constant by the relative movement of a wire electrode and a workpiece made on the basis of a command of thus determined machining feed speed.

A gap detection apparatus for determining in real time the gap required for electrochemical machining gap includes a tooling electrode, a plurality of tool adjusting electrodes, a feedback circuit, a processing feed mechanism for controlling the tooling electrode, a three-dimensional driving mechanism, and an automatic control and measurement system. The tooling electrode includes a plurality of through-holes for receiving tool adjusting electrodes. The three-dimensional driving mechanism is mounted upon the processing feed mechanism, which includes a Z-coordinate feeding portion having a thimble for the feeding of the tool adjusting electrodes. The automatic control and measurement system controls the feed of the processing feed mechanism and the three-dimensional driving mechanism, and establishes the required gap for electrochemical machining.

A gap detection apparatus for determining in real time the gap required for electrochemical machining gap includes a tooling electrode, a plurality of tool adjusting electrodes, a feedback circuit, a processing feed mechanism for controlling the tooling electrode, a three-dimensional driving mechanism, and an automatic control and measurement system. The tooling electrode includes a plurality of through-holes for receiving tool adjusting electrodes. The three-dimensional driving mechanism is mounted upon the processing feed mechanism, which includes a Z-coordinate feeding portion having a thimble for the feeding of the tool adjusting electrodes. The automatic control and measurement system controls the feed of the processing feed mechanism and the three-dimensional driving mechanism, and establishes the required gap for electrochemical machining.

A control device for a wire discharge machine including an interpolar average machining voltage detection unit 5 that detects an interpolar average machining voltage between an electrode 3 and a workpiece 4 to be machined, an interpolar average machining voltage correction unit 12 that corrects the interpolar average machining voltage detected by the interpolar average machining voltage detection unit, a set voltage storage unit 6 that stores, in advance, a set voltage serving as a target value of the interpolar average machining voltage, a voltage calculation unit 7 that calculates a difference between the set voltage and an output of the interpolar average machining voltage correction unit 12, a machining speed control unit 8 that calculates a machining speed of the electrode based on the difference calculated by the voltage calculation unit 7, a drive control device 9 that controls a machining speed of the electrode in accordance with the calculated machining speed, a set speed storage unit 10 that sets, in advance, a set speed serving as a target value of the machining speed, and a voltage correction value calculation unit 12 that calculates an interpolar average machining voltage correction value based on a difference between the machining speed and the set speed, wherein the interpolar average machining voltage correction unit 12 corrects the interpolar average machining voltage in accordance with the interpolar average machining voltage correction value.

A control device for a wire discharge machine including an interpolar average machining voltage detection unit 5 that detects an interpolar average machining voltage between an electrode 3 and a workpiece 4 to be machined, an interpolar average machining voltage correction unit 12 that corrects the interpolar average machining voltage detected by the interpolar average machining voltage detection unit, a set voltage storage unit 6 that stores, in advance, a set voltage serving as a target value of the interpolar average machining voltage, a voltage calculation unit 7 that calculates a difference between the set voltage and an output of the interpolar average machining voltage correction unit 12, a machining speed control unit 8 that calculates a machining speed of the electrode based on the difference calculated by the voltage calculation unit 7, a drive control device 9 that controls a machining speed of the electrode in accordance with the calculated machining speed, a set speed storage unit 10 that sets, in advance, a set speed serving as a target value of the machining speed, and a voltage correction value calculation unit 12 that calculates an interpolar average machining voltage correction value based on a difference between the machining speed and the set speed, wherein the interpolar average machining voltage correction unit 12 corrects the interpolar average machining voltage in accordance with the interpolar average machining voltage correction value.

A pulsed electrochemical machining (pECM) system including a tool body defining a tool axis and a proximal end and a distal end. The tool body includes one or more electrodes, each of the one or more electrodes defining a working surface at the distal end of the tool axis configured to face a workpiece. Electrolyte at least partially fills an interelectrode gap defined by the working surface at the distal end of the tool axis and a target surface of the workpiece. A first flow block coupled to the tool body and a second flow block coupled to the workpiece are configured to form at least one seal surrounding at least a portion of a perimeter of the interelectrode gap, and the at least one seal is configured to reduce or eliminate flow of the electrolyte out of the portion of the perimeter of the interelectrode gap.

A pulsed electrochemical machining (pECM) system including a tool body defining a tool axis and a proximal end and a distal end. The tool body includes one or more electrodes, each of the one or more electrodes defining a working surface at the distal end of the tool axis configured to face a workpiece. Electrolyte at least partially fills an interelectrode gap defined by the working surface at the distal end of the tool axis and a target surface of the workpiece. A first flow block coupled to the tool body and a second flow block coupled to the workpiece are configured to form at least one seal surrounding at least a portion of a perimeter of the interelectrode gap, and the at least one seal is configured to reduce or eliminate flow of the electrolyte out of the portion of the perimeter of the interelectrode gap.