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An electric arc machining discharge state detection system

An arc processing and discharge state technology, applied in arc welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as large fluctuation range, large adjustable range, and inappropriate detection methods.

Active Publication Date: 2016-09-07
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing speed of arc machining is much higher than that of EDM, so a more sensitive discharge state detection system is needed, and the voltage in arc machining can be DC or pulse, the voltage range can be adjusted in a large range, and the fluctuation range is also large, resulting in traditional detection methods. Not suitable, so new detection methods are needed

Method used

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  • An electric arc machining discharge state detection system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] established as figure 1 The circuit diagram of the arc machining discharge state detection system shown mainly includes an arc machining machine tool system, an independent detection circuit IDC, a voltage stabilizing circuit RV, a voltage comparison circuit VC, a PLC module and a numerical control system CNC.

[0013] The discharge state in the arc machining process is mainly divided into short circuit, open circuit and normal processing. Such as figure 1 As shown, the rated voltage of the arc power supply V1 is 80V, which is applied to both ends of the electrode and the workpiece for arc processing. The rated voltage of the DC power supply V2 in the independent detection circuit IDC is 55V, and the resistance value of the fixed value resistor R1 is 55Ω. Diodes D1 and D2 isolate V1 from the independent detection circuit IDC, increasing the reliability of the detection results. When the arc processing is in an open circuit state, there is no current in the detection ...

Embodiment 2

[0018] The rated voltage of the DC power supply V2 in the independent detection circuit IDC is 65V, the resistance value of the fixed-value resistor R1 is 65Ω, and the others are the same as in the first embodiment.

Embodiment 3

[0020] The rated voltage of the DC power supply VCC in the voltage comparison circuit VC is 10V, and the others are the same as in the first embodiment.

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Abstract

The invention belongs to the field of electric machining, in particular to an independent arc machining discharge state detecting system. The system comprises three parts of an independent detecting circuit IDC, a voltage stabilizing circuit RV and a voltage comparing circuit VC, wherein the voltage stabilizing circuit RV consists of two fixed value resistors and a capacitor; the voltage comparing circuit VC consists of a voltage comparer UC, a slide wire rheostat and a direct current power supply VCC; and the independent detecting circuit IDC consists of a direct current power supply V2, a fixed value resistor R1, a diode D1 and a diode D2, a Hall sensor CS and an equivalent resistor Re between a workpiece on a machine tool and an electrode. The system can control the machine tool to realize such functions as machining stop, cutter hoisting, continuous machining, acceleration and deceleration through different voltages output by the voltage comparer to realize real-time monitoring of a discharge state in the arc machining process, and controls the machine tool to correspondingly move to achieve more stable machining process.

Description

technical field [0001] The invention belongs to the field of electric machining, and relates to an electric arc machining (Electrical Arc Machining, EAM) discharge state detection system. Background technique [0002] Arc machining is a new processing method after Electrical Discharge Machining (EDM). An electric machining technology for efficient machining of hardened conductive materials, which not only has the advantages of EDM, but also has a processing speed much higher than that of EDM. With the development of some new materials with high hardness, high strength, high wear resistance, high melting point and strong corrosion resistance in the process of aviation technology, marine engineering technology and oil exploration (such as titanium alloy, high-strength stainless steel and high-temperature alloy, etc. ), the use of traditional processing technology can no longer meet the needs of the process, and EDM is limited because of low processing efficiency, so the arc p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/095
CPCB23K9/095
Inventor 张勤河朱光张敏
Owner SHANDONG UNIV
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