A high-current multiple cutting method for high-speed reciprocating wire electric discharge cutting

A technology of wire electric discharge and reciprocating wire electric discharge, which is applied in the field of high-speed reciprocating wire electric discharge, high-speed reciprocating wire electric discharge, high-current multiple cutting, and can solve the problem of affecting cutting efficiency and processing quality, and material deformation , poor state between poles, etc.

Active Publication Date: 2021-07-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS WUXI RES INST +1
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Problems solved by technology

[0004] Aiming at the problems of high-speed reciprocating wire electric discharge cutting with high-current and high-efficiency cutting, the state between electrodes is poor, the contour accuracy is low, and the material deformation is large, which affects the cutting efficiency and processing quality of subsequent trimming. Wire EDM high-current multiple cutting method can improve cutting efficiency and processing quality after high-speed reciprocating wire EDM high-current high-efficiency cutting

Method used

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  • A high-current multiple cutting method for high-speed reciprocating wire electric discharge cutting

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] The present invention proposes a high-current multiple cutting method for high-speed reciprocating wire electric discharge cutting, which is implemented by four cutting methods, such as figure 1 shown. a is the threading point of the first high-current high-efficiency cutting, b is the entry point, and it is processed along the counterclockwise direction of a-b-c-d-e-f. After the first cutting is completed, process along the clockwise direction shown in the second cutting track 2, and perform zero trimming or minimal trimming δ on the workpiece at a wire speed and processing energy that is more than half of the first cutting Cutting, the trimming range is 0-0.02mm, to promote the discharge of residual erosion products between the electrodes and reduce or eliminate the deformation of the workpiece after high-energy and high-efficiency cutting, so...

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Abstract

The invention discloses a high-current multiple cutting method for high-speed reciprocating wire electric discharge cutting, which adopts four times of cutting-"cutting, cleaning, and repairing two", that is, the first high-current high-efficiency cutting is formed, and the second Cutting adopts wire-feeding speed and processing energy that are more than half of the first cutting to cut the workpiece with zero trimming or minimal trimming—knife cleaning, so as to reduce the remaining erosion products between the electrodes and eliminate the deformation of the workpiece, and then Then use narrow pulse width and high peak current to perform high-speed trimming for the third and fourth cuts, further improving the processing accuracy and surface quality of the workpiece, so as to achieve high cutting efficiency and high processing quality.

Description

technical field [0001] The invention relates to a wire electric discharge processing method, in particular to a high-speed reciprocating wire electric discharge wire cutting processing method, specifically a high-current multiple cutting method for high-speed reciprocating wire electric discharge wire cutting. Background technique [0002] Multi-cutting is the fundamental means to improve the precision and surface quality of WEDM. It separates rough and finish machining, and uses two processing procedures, main cutting and trimming, to solve the contradiction between fast and good quality. At present, reciprocating wire EDM mostly uses three cuts (cut one and repair two), generally through the first cut to shape, the second cut to improve the processing accuracy, and the third cut to improve the surface quality of the processed workpiece. [0003] The average processing current of conventional reciprocating wire EDM is generally 4-6A, and the cutting efficiency is stable at ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H7/02
CPCB23H7/02
Inventor 邱明波邹尧刘志东邓聪
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS WUXI RES INST
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