Automatic control device and automatic control method of electric spark deposition build-up welding contact force

Abstract

The invention provides an automatic control device and an automatic control method of electric spark deposition build-up welding contact force. The automatic control device comprises an execution mechanism used for driving an electrode tip to make contact with a base body, an induction mechanism arranged between the execution mechanism and the electrode tip, and a control mechanism which is electrically connected with the induction mechanism and is in control connection with the execution mechanism. The execution mechanism comprises a cross-shaped sliding table. The plane where the cross-shaped sliding table is located is perpendicular to the base body. The cross-shaped sliding table is connected with an angle adjusting unit in a driving manner, wherein the angle adjusting unit is used forclamping the electrode tip. The induction mechanism comprises a pull pressure sensor fixedly arranged between the cross-shaped sliding table and the angle adjusting unit. The control mechanism comprises a single-chip microcomputer which is electrically connected with the pull pressure sensor. The single-chip microcomputer is in control connection with the cross-shaped sliding table through an output drive interface. The single-chip microcomputer is in communicating connection with an upper computer through a communicating interface. The automatic control device can automatically control the contact force between the moving electrode tip and the fixed base body in real time, and the deviation of the deposition position caused by consumption of the electrode tip can be compensated automatically.

Description

technical field

[0001] The invention relates to the technical field of electric spark deposition surfacing welding, in particular to an automatic control device and an automatic control method for electric spark deposition surfacing welding contact force. Background technique

[0002] The working principle of EDM deposition welding technology is: when the electrode is in contact with the substrate, the circuit is in a short-circuit state, the power supply outputs a discharge pulse, and a large current density is generated in the small area of ​​the contact point between the electrode and the substrate to make the contact point The electrode and the matrix material at the place melt and gasify instantly, triggering spark discharge, and the molten material of the electrode transitions to the surface of the matrix. If the electrode continues to approach the matrix, the matrix is ​​extruded with mechanical force, so that the molten electrode material is firmly bonded to the matri...

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