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Electro-discharge-machine machining condition optimization method

一种放电加工机、加工条件的技术，应用在放电加工机的加工条件优化领域，能够解决工件表面质量恶化、加工特性(加工速度低电极消耗不充分等问题，达到回避工件表面质量的恶化、低电极消耗、满足加工速度的效果

Inactive Publication Date: 2007-01-17
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the conventional example, the EDM method mainly avoids the deterioration of the surface quality of the workpiece due to abnormal discharge, and there are other problems such as insufficient processing characteristics (machining speed, low electrode consumption) and the like.

Method used

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  • Electro-discharge-machine machining condition optimization method
  • Electro-discharge-machine machining condition optimization method
  • Electro-discharge-machine machining condition optimization method

Examples

Experimental program
Comparison scheme
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Embodiment approach 1

[0016] figure 1 It is a block diagram showing the electrical discharge machine according to Embodiment 1 of the present invention. The configuration is as follows: In the drawing, a machining tank 1 is filled with a machining fluid 2 such as i-paraffinic hydrocarbon, and a workpiece (processed object) 3 is disposed therein. A processing electrode 5 is provided at the front end of the servo system 4, and the gap between the processing electrode 5 and the workpiece 3 is controlled based on the servo reference voltage generated by the servo control unit 6, and by applying a voltage to the processing electrode 5, the processing The liquid 2 discharges from the machining electrode 5 to the workpiece 3 to machine the workpiece 3 .

[0017] The discharge voltage detection unit 7 detects the discharge voltage and obtains the average discharge voltage for a certain period of time. Optimum processing condition calculation part 8, according to the relational expression of average disch...

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Abstract

The present invention relates to an electro-discharge-machine machining condition optimization method. A discharge voltage detection unit (7) detects a discharge voltage and acquires an average discharge voltage in a predetermined time. An optimal machining condition calculation unit (8) calculates a discharge current which makes the average discharge voltage detected by the discharge voltage detection unit (7) identical to an average discharge voltage using a new machining liquid, and calculates the discharge time, halt time, and servo reference voltage in accordance with the calculated discharge current from the relational equation between the discharge current, discharge time, and halt time generating an optimal machining condition stored in the machining condition database storage unit (9). During machining, a servo (4) and a machining electrode (5) are controlled by the optimal machining condition via a servo control unit (6).

Description

technical field [0001] The present invention relates to an electrical discharge machine that faces a workpiece (object to be processed) and a machining electrode via a small machining gap, and applies a pulse-like voltage to the gap between the workpiece and the machining electrode to perform machining. In particular, it relates to a method for optimizing machining conditions of an electric discharge machine, which automatically optimizes machining conditions according to changes in physical properties of machining fluid. Background technique [0002] In general, in electrical discharge machining (electric discharge machining, arc machining), the machining fluid is deteriorated due to the generation of metal chips, water, carbonic acid, etc. generated by machining, and the volume resistivity of the machining fluid decreases. There is a problem that when abnormal discharge occurs due to the decrease in volume resistivity and an arc current flows, the machining speed decreases...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H1/02B23H7/16B23H7/20
CPCB23H7/20B23H1/022B23H7/16
Inventor 三木伸介加藤木英隆
Owner MITSUBISHI ELECTRIC CORP