Line electrode workpiece different-speed compound motion micro electrolytic line cutting machining method

Abstract

The invention relates to a line electrode workpiece different-speed compound motion micro electrolytic line cutting machining method, and belongs to the field of precision micro electrochemical manufacturing. In the machining direction, the line electrode and the workpiece perform relative cutting motion at different speeds, and stationary electrolyte flows reversely and rapidly to flush out products in a gap. In the direction perpendicular to the machining direction, the line electrode and the workpiece move alternately in a reciprocating mode to assist mass transfer in the gap. By using thecompound motion in different directions, the position change of a machining area is realized, the electrolyte in the machining gap is driven to rapidly renew and flow, and the differential motion micro-electrolysis line cutting machining is carried out under the state of high-efficiency mass transfer. The line electrode workpiece different-speed compound motion micro electrolytic line cutting machining method remarkably improves the precision, efficiency and stability of micro-electrolysis line cutting machining, and has important significance.

Description

technical field [0001] The invention relates to a fine electrolytic wire cutting processing method of a wire electrode workpiece with different speed compound motion, belonging to the field of precision fine electrochemical manufacturing. Background technique [0002] Precision and miniaturization are the mainstream development trends of modern industrial products. In micromechanical systems, metal microdevices have the characteristics of high strength, low resistivity, high sensitivity and high density. The demand is increasing day by day, and the materials and structural forms involved are also increasing. Different, the planar profile microstructure is an important structural form, which is widely used in many fields such as aerospace, biomedicine, precision instruments, micro-robots, and micro-sensors due to its excellent performance. [0003] Micro-electrolytic wire cutting technology uses micro-scale metal wires as tool electrodes. Based on the principle of electrochem...

AI Technical Summary

Problems solved by technology

Researchers have proposed methods such as axial micro-amplitude vibration of the wire electrode, circular wire travel of the wire electrode, and low-frequency vibration of piezoelectric ceramics. Since the wire electrode is a cylindrical metal wire with a smooth outer surface at the micron level, its ability to drag and disturb is limited. The discharge effect of the product in the wide ratio structure is weak, resulting in a short circuit in the processing, and the processing cannot be carried out stably. Therefore, the ability of the wire electrode to vibrate slightly in the axial direction and the ring wire of the wire electrode to increase mass transfer is not good, and the low frequency vibration of piezoelectric ceramics is to a certain extent The flow field in the processing gap has been improved, but there are still problems of processing products and air bubbles adhering to the electrode wire and the surface of the workpiece

In addition, the researchers proposed a method of radial reciprocating vibration of the wire electrode to improve mass transfer, but this method is only suitable for simple linear structures, and it is difficult to realize the radial reciprocating vibration of the wire electrode when processing complex trajectories.

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