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Arc profile cutting discharge processing method based on combined arc breaking and efficient chip removal

A technology of electric discharge machining and arc breaking, which is applied in arc welding equipment, metal processing equipment, welding/cutting media/materials, etc. It can solve problems such as high-efficiency chip removal, affecting the stable and continuous operation of electric discharge machining, and processing short circuits.

Active Publication Date: 2015-09-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 2. This invention does not mention the relevant content of efficient chip removal in electric discharge machining. The actual experimental results of the inventor show that efficient chip removal is very important for the stability of the machining process
According to the actual arc discharge machining test, efficient chip removal will directly affect the stable and continuous progress of electrical discharge machining, and untimely chip removal will cause machining short circuit

Method used

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  • Arc profile cutting discharge processing method based on combined arc breaking and efficient chip removal
  • Arc profile cutting discharge processing method based on combined arc breaking and efficient chip removal
  • Arc profile cutting discharge processing method based on combined arc breaking and efficient chip removal

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The contour cutting of arc contour cutting EDM method based on hydrodynamic and mechanical power combined arc breaking and efficient chip removal, such as figure 2 shown. Choose a CNC machine tool with 3-axis linkage, and predetermine the feed path according to the contour characteristics of the target workpiece. The workpiece 1 is a nickel-based superalloy (GH4169), the size is 200*200*150mm (length*width*height), and the electrode 2 is 5mm in diameter. The rod-shaped electrode, the length is 170mm, and the material is graphite. The power parameters are: peak voltage 90V, peak current 600A, pulse width 8000μs and pulse interval 1000μs. The rotation speed of the electrode is 1500r / min, the frequency of the electrode vibration is 200Hz, and the amplitude is 500μm. The working medium is water-based emulsion, and the coaxial flushing outlet pressure is 2.0MPa. Under the above process conditions, the arc contour cutting process is carried out, and finally the workpiece ...

Embodiment 2

[0036] The cavity machining of the arc contour cutting EDM method based on fluid power and mechanical power composite arc breaking and efficient chip removal, such as image 3 shown. Choose a CNC machine tool with 5-axis linkage, and predetermine the feed path according to the cavity characteristics of the target workpiece. The workpiece 1 is a molybdenum-titanium-zirconium superalloy (TZM), and its size is 300*150*150mm (length*width*height). An internal cavity, electrode 2 is a rod-shaped electrode with a diameter of 5mm, a length of 180mm, and the material is graphite. The power parameters are: peak voltage 90V, peak current 400A, pulse width 6000μs and pulse interval 1000μs. The rotation speed of the electrode is 1500r / min, the frequency of the electrode vibration is 200Hz, and the amplitude is 500μm. The working medium is water-based emulsion, and the coaxial flushing outlet pressure is 2.0MPa. Under the above process conditions, the arc contour cutting process is carr...

Embodiment 3

[0038] The blanking cutting of the electric arc contour cutting EDM method based on fluid power and mechanical power combined arc breaking and efficient chip removal, such as figure 2 shown. Choose a CNC machine tool with 3-axis linkage, and predetermine the feed path according to the characteristics of the target blanking workpiece. The workpiece 1 is a molybdenum-titanium-zirconium superalloy (TZM), the size is a bar with a diameter of 150mm and a length of 800mm, and the electrode 2 is a diameter of 5mm. The rod-shaped electrode is made of graphite. The power parameters are: peak voltage 90V, peak current 600A, pulse width 8000μs and pulse interval 1000μs. The rotation speed of the electrode is 1500r / min, the frequency of the electrode vibration is 200Hz, and the amplitude is 500μm. The working medium is water-based emulsion, and the coaxial flushing outlet pressure is 2.0MPa. Under the above process conditions, the arc contour cutting process is carried out, and finall...

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Abstract

The invention provides an arc profile cutting discharge processing method based on combined arc breaking and efficient chip removal, comprising the steps of: fixedly connecting an arc profile cutting device with the spindle of a machine tool, installing an electrode for discharge processing on the arc profile cutting device, connecting the electrode with one pole (cathode or anode) of a discharge power supply, connecting a workpiece to be processed with the other pole (anode or cathode) of the discharge power supply, applying direct current or pulse current by the discharge power supply, forming arc discharging between the electrode and the workpiece to remove the workpiece material by etching, flushing an area to be processed at a high speed while processing, allowing the electrode to rotate at a high speed and vibrate, and thereby achieving the arc breaking mechanism and efficient chip removal, and obtaining stable and reliable arc profile cut processing. According to the arc profile cutting discharge processing method, the arc discharge processing is ensured by using lateral discharging of the rotating rodlike electrode and using the combined arc breaking mechanism, the high speed discharge processing of the electrode can be simply, conveniently and economically achieved, particularly for curved surface and cavity processing.

Description

technical field [0001] The invention relates to an electrical discharge machining method in the technical field of special processing, in particular to an arc profile cutting electrical discharge machining method based on fluid power and mechanical power composite arc breaking and efficient chip removal. Background technique [0002] In order to solve various problems existing in the machining of large-thickness workpieces of difficult-to-machine materials in the fields of aerospace and military industry, the present invention proposes an arc contour cutting EDM method based on combined arc breaking and efficient chip removal based on hydrodynamic and mechanical power. [0003] According to patent retrieval, Ye Liangcai described the processing method of high-efficiency electromelting explosion processing in patents CN87106421A and CN1061175A, which is mainly applied to the outer contour processing and cutting processing of rotating workpieces such as rolls and rolling rolls....

Claims

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Application Information

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IPC IPC(8): B23H5/00B23K9/013B23K35/04
CPCB23H5/00B23K9/013B23K35/0205B23K35/0211
Inventor 顾琳朱颖谋赵万生陈吉朋
Owner SHANGHAI JIAO TONG UNIV
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