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A method of using liquid metal electric discharge machining spherical die

A technology of liquid metal and electric discharge machining, which is applied in the research of electric discharge technology and the field of electric discharge processing, can solve the problem of not fundamentally solving the problem of electrode loss, etc., and achieve the effect of solving errors, improving processing efficiency, and improving processing accuracy

Active Publication Date: 2019-04-23
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example: Bley et al. proposed an effective discharge pulse detection and compensation method to monitor the motor loss on-line, thereby compensating; Korean scholar Ki Young Song used strip electrodes to reduce electrode loss in the EDM process. In addition, CN102151920A from The structural design is optimized for EDM, and the mold is complex, but the above methods only reduce the impact of electrode loss, and do not fundamentally solve the problem of electrode loss

Method used

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  • A method of using liquid metal electric discharge machining spherical die
  • A method of using liquid metal electric discharge machining spherical die
  • A method of using liquid metal electric discharge machining spherical die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 and 2 As shown, the liquid metal electrode processing device includes an electric discharge machine tool and a liquid supply system. Among them, the processing machine tool is preferably a three-axis CNC EDM machine tool, including machine tool, industrial computer, pulse power supply, electrode, workpiece and other components; the liquid supply system includes liquid metal, plastic catheter, programmable syringe pump, capillary glass tube and other components composition.

[0030] The machine tool is controlled by an industrial computer, driven by a high-precision servo motor, and the feeding accuracy is 1 μm; the pulse power supply can provide pulse voltage with adjustable cycle and frequency, and is equipped with a discharge detection device, which can detect the current discharge state between the two electrodes , and feed back the detection signal to the industrial computer for processing.

[0031] In the liquid supply system, the liquid metal i...

Embodiment 2

[0033] Embodiment 2 Concave mold one-shot molding process

[0034] Using the solution in Example 1, for a spherical die with a small diameter (0.1mm image 3 shown.

Embodiment 3

[0035] Embodiment 3 Multi-scanning processing of die

[0036] Using the scheme of Example 1, for spherical concave molds with large diameters (arc radius SR Figure 4 shown in a1-4c2.

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Abstract

The invention provides a method for electrical discharge machining of spherical female moulds by means of liquid metal. The method comprises the steps that the liquid metal Galinstan serves as a discharging electrode and is stored in a tool electrode capillary glass tube; and the sizes of hanging liquid drops of the liquid metal are controlled by means of a programmable injection pump, so that spherical female moulds in different shapes are machined. According to the machining mode, a tool electrode does not participate in spark discharge, and therefore the shape of the electrode is not changed, the problem that the tool electrode is consumed is better relieved accordingly, and the machining precision is improved.

Description

technical field [0001] The invention belongs to the technical field of electric discharge machining and electric discharge process research, and particularly relates to a method for processing a spherical concave mold by using liquid metal electric discharge. Background technique [0002] In some precision instruments and sensors, some important parts often need to process tiny concave balls (SR<1) due to their special functions and uses, and the concave balls often have high precision requirements. The traditional concave ball processing schemes mainly include the following types: [0003] (1) Milling of oblique circle forming spherical surface method: the principle is that both the workpiece and the grinding rod rotate around their respective axes, there is a certain angle between the two axes, and the grinding rod is fed along the axis of the workpiece to process a concave spherical surface. This method has strict requirements on the coplanarity of the axis of the wor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H1/00B23H1/10
CPCB23H1/00B23H1/10
Inventor 黄瑞宁刘晓飞韩绍峰楼云江
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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