Detecting device and detecting method for electrolytic machining gap

Abstract

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.

Description

technical field [0001] The invention relates to the detection technology of the electrolytic machining gap, more specifically, a device capable of real-time detection of the electrolytic machining gap for complicated surfaces and a detection method thereof. Background technique [0002] Electrochemical machining, also known as electrochemical machining (Electrochemical Machining, ECM), is a processing method that uses current to flow through the machining gap to dissolve metal in the form of ions in the electrolyte, thereby machining and forming the anode metal workpiece. In the process of electrolytic machining, with the help of the formed tool cathode, the metal on the surface of the workpiece anode to be processed is dissolved according to the shape of the tool cathode, and as the tool cathode is fed to the workpiece, a small machining gap is maintained, so that the workpiece anode is processed on the surface Continue to dissolve at a high speed until it reaches the requi...

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Problems solved by technology

However, this method is easily affected by the temperature of the electrolyte and the air bubbles in the processing gap, and has certain requirements on the size of the electrode and the size of the electrolyte flow channel, making the measurement accuracy low and difficult to install the probe

At the same time, the processing voltage waveform distortion method is a method to realize the real-time detection of the processing gap by using the distortion information as the basis for controlling the processing gap, but this method can only be used to detect sine wave or chopped sine wave pulse current processing, and for Other DC power supplies and other processing gap detection are powerless, and the application range is limited

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