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Electrode gap control method and device for numerical control electrolytic machining

A technology of electrode gap and control method, which is applied in the direction of processing electrodes, electrode manufacturing, electric processing equipment, etc., can solve the problem of low measurement accuracy of electrode gap, and achieve the effect of small response time, fast response speed and high measurement accuracy

Active Publication Date: 2014-02-05
CHANGZHOU TRANSCEND CNC MACHINE TOOL
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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiency of low measurement accuracy of the electrode gap of the existing numerical control electrolytic machining, and provide a method and device for controlling the electrode gap of numerical control electrolytic machining. The technical scheme provided by the present invention can not only improve the efficiency of numerical control electrolytic machining , but also can improve the accuracy and stability of electrolytic machining

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  • Electrode gap control method and device for numerical control electrolytic machining

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Embodiment

[0032] Taking the five-axis linkage numerical control electrolytic machining machine tool as an example, the electrode gap control method of numerical control electrolytic machining in this embodiment includes the following steps:

[0033] (1) Measurement of the electrode gap: In the five-axis linkage CNC electrolytic machining, the gap between the rotating cathode and the workpiece anode is filled with electrolyte, and under the action of the electric field, the positive ions in the electrolyte move to the tool cathode, forming a The positive current flow from the anode to the rotating cathode creates a current field. Although the electrode gap is affected by many factors, it is mainly affected by the gap electric field. Therefore, the electrode gap is analyzed based on the assumption of electric field simplification and Faraday's law of electrolysis, and the approximate formula of the electrode gap is derived, which shows that the machining current is inversely proportional ...

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Abstract

The invention discloses an electrode gap control method and device for numerical control electrolytic machining, and belongs to the field of electrode gap measurement. The electrode gap control method for numerical control electrolytic machining comprises the following steps: (1) measurement of an electrode gap: indirectly reflecting the electrode gap via the magnitude of an output signal of a Hall current sensor taken as a detection element of numerical control electrolytic machining current; (2) calibration of the electrode gap: calibrating the relation between the electrode gap of the numerical control electrolytic machining and the output signal of the Hall current sensor on line by means of a high-precision position control system of a numerical control electrolytic machining tool; (3) control of the electrode gap: constructing an electrode gap control system of the numerical control electrolytic machining on the basis of a numerical control system, the Hall current sensor and a converter. The invention further discloses the electrode gap control device for numerical control electrolytic machining. According to the method and the device, the efficiency of the numerical control electrolytic machining is increased, and the accuracy and stability of electrolytic machining are increased and enhanced.

Description

technical field [0001] The present invention relates to a gap control method and device, more specifically, to a control method and device for the gap between a tool (cathode) and a part (anode) in numerically controlled electrolytic machining. Background technique [0002] At present, the processing used in mechanical manufacturing can be divided into traditional mechanical processing and non-traditional processing. [0003] Traditional machining relies on the tool material being harder than the workpiece material, and using mechanical energy to remove excess material on the workpiece, which is generally feasible. However, when the workpiece material becomes harder and the processed surface becomes more and more complex, traditional machining will limit the productivity and affect the processing quality, and sometimes even cannot be processed; if the wall thickness of the workpiece is getting smaller and smaller (the wall thickness is less than 0.5 mm), due to the mechanic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H3/04B23H7/32
Inventor 干为民黄亮徐波褚辉生房汝建杨名利
Owner CHANGZHOU TRANSCEND CNC MACHINE TOOL
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