Efficient machining method of controllable ablation metallic material based on electric-spark induction
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A metal material and cutting technology, applied in the field of high-efficiency cutting of metal materials induced by electric spark induced controllable ablation, can solve problems such as low processing efficiency of difficult-to-machine metal materials, and achieve low processing efficiency, prolong service life, and rigidity. The effect of request reduction
Active Publication Date: 2012-11-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[0006] The purpose of the present invention is to solve the problem of low processing efficiency of difficult-to-machine metal materials at present, and to invent a method that combines grinding and milling processing commonly used in mechanical cutting with electric discharge machining, and makes the difficult-to-process area difficult Processing method of rapidly softening and then cutting removal of processed metal materials
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Embodiment 1
[0044] Such as figure 1 shown.
[0045] A new method for processing difficult-to-machine metal materials based on electric spark induced controlled ablation and electric discharge grinding, which includes the following steps:
[0046] First, make the grinding wheel with mechanical cutting effect conductive and rotate; the conductive grinding wheel can be circular or slotted intermittently, and the combustion-supporting gas can be input from the grinding wheel body to the processing area or from the grinding wheel body to the processing area;
[0047] Secondly, under the action of DC or pulse power supply, spark discharge is generated between the conductive part of the grinding wheel and difficult-to-machine metal materials (such as titanium alloys, high-temperature alloys, high-strength steel or stainless steel materials), and the use of electric spark discharges makes difficult-to-machine The surface of the metal material reaches the ignition point temperature and is in an a...
Embodiment 2
[0057] Such as figure 2 shown.
[0058] A new method for processing difficult-to-machine metal materials based on electric spark induced controlled ablation and milling, which includes the following steps:
[0059] First of all, the milling cutter with mechanical cutting function is made conductive and rotates; the milling cutter can be composed of conductive teeth, insulating cutting teeth and wheel discs, and the insulating teeth can be made of diamond, cubic boron nitride or ceramics, through electroplating, It is fixed on the wheel by clamping or welding, and the combustion-supporting gas can be input from the wheel to the processing area or from the outside of the wheel to the processing area;
[0060] Secondly, under the action of DC or pulse power supply, spark discharge is generated between the conductive part of the milling cutter and difficult-to-machine metal materials (such as titanium alloys, high-temperature alloys, high-strength steel or stainless steel materi...
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Abstract
Efficient machining method of controllable ablation unmanageable metallic material based on electric-spark induction is characterized by comprising the following steps of: rotating a conductive roulette at a high speed, producing spark discharge between conductive teeth of the conductive wheel disc and the unmanageable metallic material under the action of a direct-current power supply or pulse power supply, meanwhile continuously or periodically introducing combustion-supporting gas which can produce combustion heat release effect through reacting with the unmanageable metallic material intoa processing area so that the processing area of the unmanageable metallic material is in states of discharging induced by electric spark, ablating and softening and machining. Based on the discharging function of the electric spark, the surface of metallic material has a temperature higher than ignition temperature and in state of activation, has an ablation reaction with combustion-supporting gas to generate an ablation product and release a large quantity of heat; the heat acts on the material base in the processed area so that the unmanageable metallic material is heated, softened and even in a molten state; the ablation product and softened or even molten metallic material is removed through abrasive particles on the wheel disc or mechanical cutting function of the cutting tooth. Themethod has advantages of high processing efficiency, low power consumption, environmental friendliness and high safety, and is especially suitable for machining of the unmanageable metallic material.
Description
technical field [0001] The invention relates to a metal material cutting method, in particular to a method that can improve the processing efficiency of difficult-to-machine metal materials and combines roulette cutting (grinding and milling) with electric spark ablation to quickly remove difficult-to-machine materials. A high-efficiency cutting method of electric spark induced controllable ablation of metal materials that guarantees the quality and precision of the processed surface. Background technique [0002] With the advancement of industrial production and science and technology, new materials are constantly emerging. Among these new materials, many are difficult-to-machine metal materials, such as superalloys, titanium alloys, high-strength steels, and stainless steels. These materials have the advantages of high specific strength, high hardness, high temperature resistance, corrosion resistance, wear resistance, etc., but the emergence of new materials also brings g...
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