Linear electrode curved surface electrolysis electrical discharge machining system and method

Abstract

The invention discloses a linear electrode curved surface electrolysis electrical discharge machining system which comprises a linear electrode and a work-piece. The machining surface of the work-piece is covered with a mask. The mask is provided with a plurality of through holes. The linear electrode makes contact with the mask on the machining surface of the work-piece. The invention further discloses a linear electrode curved surface electrolysis electrical discharge machining method. The system has the advantages that the linear electrode and the work-piece do relative displacement motion, which is beneficial for renewing a working solution; as the linear electrode moves on the plane in the mode of being attached to the mask, the working solution can be renewed, and the machining gaps can be stable; micro-electrolysis is carried out on electrical sparkles by means of the mask, electrical discharge machining is only carried out on the no-mask area, and therefore locality of electrical discharge machining is improved; under the micro-electrolysis effect, the surface quality of the machining surface is higher than that of the machining surface of common electrical discharge machining; as the curved surface mask mode is adopted, large-scale surface texture can be obtained conveniently, and machining can be carried out on the inner and outer surface texture of the cylinder curved surface.

Description

【Technical field】 [0001] The invention relates to the technical field of electrical machining, in particular to a linear electrode curved surface electrolytic electrolytic machining system and method. 【Background technique】 [0002] With the progress of microelectronics technology, nanotechnology, micro-nano processing technology, laser technology, microchemical technology, new materials and new processes, micro mechanical system (MEMS) technology has been continuously improved and developed. Microfluidic chips have great potential in the fields of biology, chemistry and medicine. Due to the advantages of low cost, good performance, and wide selection, polymer materials are easy to realize rapid, low-cost, and mass production of microfluidic chips through molds, and are increasingly becoming the main material for making microfluidic chips (see: Liu Ying. Research on injection molding technology of microstructure products based on microfluidic chips. Dalian: Dalian Universit...

AI Technical Summary

Problems solved by technology

The disadvantages of wet chemical etching are: the corrosive liquid has relatively high requirements on the corrosion resistance of machine tools and related parts. The processing process often produces chemical mist and toxic gases, which is not conducive to environmental protection. The side corrosion phenomenon on the principle of chemical etching will lead to processing The size is not easy to precisely control, the verticality of the side wall of the microchannel is not good, and the cross-sectional shape is difficult to control

The methods for processing surface microstructures by EDM technology include micro-EDM milling and EDM profiling. The EDM profiling method is similar to the present invention. Its shortcoming is: due to the serious loss of tool electrodes, it will affect the forming process. Accuracy and service life, and there is a heat-affected zone in processing, which causes a metamorphic layer on the surface of the workpiece, and the microstructure is prone to thermal deformation

Wet chemical etching also uses a photolithography mask, but the verticality of the sidewall of the etched microstructure is very poor, which cannot meet the verticality requirements of the microchannel

[0011] In addition, existing electrolytic electrolytic machining still has defects such as unfavorable renewal of working fluid, unstable machining gap, and poor machining surface quality.

Images