High-speed reciprocation wire cut electrical discharge machining working solution service life online fast determining method

A reciprocating wire EDM technology, applied in the identification of the working state of the electrolyte used in wire EDM, and in the field of online rapid judgment of the life of the working fluid in high-speed reciprocating wire EDM, which can solve the problem of poor judgment accuracy and delay Problems such as non-resistance, inability to achieve cutting processing status, etc., to achieve the effect of reducing broken wires, prolonging the trouble-free working time and prolonging the service life

Active Publication Date: 2014-07-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] The purpose of the present invention is to solve the current working fluid discrimination mainly relying on manual discrimination based on concentration, PH value and viscosity, resulting in poor judgment accuracy and time delay, and often only actively discriminates when there is a problem with the quality of the cutting piece, which cannot be realized To reflect problems such as cutting processing status, and to invent a fast online determination method for working fluid life in high-speed reciprocating wire EDM processing that can reflect the status of the working fluid in real time and can automatically alarm or prompt

Method used

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  • High-speed reciprocation wire cut electrical discharge machining working solution service life online fast determining method
  • High-speed reciprocation wire cut electrical discharge machining working solution service life online fast determining method
  • High-speed reciprocation wire cut electrical discharge machining working solution service life online fast determining method

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Such as Figure 1-4 shown.

[0027] A high-speed reciprocating wire electric discharge wire cutting machining working fluid life online rapid determination method, which includes the following steps:

[0028] First, through the sampling circuit (such as image 3 ) Collect the number of no-load current pulses or (short circuit + discharge) current pulses within a sampling period on a regular basis (can be set by yourself, such as intervals of 1 minute, 3 minutes, 5 minutes, 10 minutes or more);

[0029] Secondly, calculate the ratio of the number of no-load current pulses or (short circuit + discharge) current pulses to the pulses in a sampling period:

[0030] Third, according to the income ratio, the following processing is carried out:

[0031] If the no-load pulse ratio is ≤10% or (short circuit + discharge) pulse rati...

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Abstract

The invention relates to a high-speed reciprocation wire cut electrical discharge machining working solution service life online fast determining method. The method is characterized by including: firstly, using a sampling circuit to regularly sample no-load current pulse count or (short circuit+discharge) current pulse count in one sampling cycle; secondly, calculating the proportion of the no-load current pulse count or (short circuit+discharge) current pulse count accounting for the pulse in the sampling cycle; thirdly, processing according to the obtained proportion: if no-load current pulse proportion is not larger than 10% or the (short circuit+discharge) current pulse proportion is not smaller than 70%, determining that working solution operates normally; if the no-load current pulse proportion ranges from 10% to 20% or the (short circuit+discharge) current pulse proportion ranges from 60% to 70%, determining that cutting can be performed normally by adjusting cutting parameters; if the no-load current pulse proportion is larger than 20% or the (short circuit+discharge) current pulse proportion is smaller than 60%, determining that the working solution fails and needs to be replaced. The method is simple, practical, good in instantaneity and high in accuracy.

Description

technical field [0001] The present invention relates to a kind of electric spark cutting processing technology, especially a kind of electrolyte working state discrimination technology for wire electric discharge cutting processing, specifically an online rapid judgment method of working fluid life in high-speed reciprocating wire electric discharge cutting processing . Background technique [0002] At present, high-speed reciprocating wire EDM is an EDM technology with Chinese characteristics. The use of its discharge medium has experienced different development stages from kerosene, ordinary emulsion, special emulsion for wire cutting, and synthetic working fluid. At present, the working fluids commonly used in the domestic market can be divided into three types, namely oil-based emulsions, water-based synthetic fluids and composite working fluids. The characteristics of the working fluid directly affect the cutting speed, the quality of the processed surface, the thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H7/34B23H7/02
Inventor 刘志东邱明波田宗军沈理达
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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