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System and method for large-area micropit array high-precision electrolytic machining

A technology of micro-pit array and processing system, which is applied in the direction of electrochemical processing equipment, the supply of processing working medium, and metal processing equipment, etc., and can solve the problems of stray corrosion, large-area processing accuracy, flexible templates and workpieces, etc. , to achieve the effect of improving the machining accuracy

Active Publication Date: 2018-06-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0006] The present invention proposes a system and method for high-precision electrolytic machining of large-area micro-pit arrays, which solves the problems of poor bonding between flexible templates and workpieces, serious stray corrosion, and low precision of large-area machining in the original electrolytic machining. Improved machining accuracy

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  • System and method for large-area micropit array high-precision electrolytic machining

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Embodiment Construction

[0015] The present invention is described below in conjunction with the accompanying drawings: a system and method for high-precision electrolytic machining of a large-area micropit array, including the following steps:

[0016] a. Make cathode tool 4 and fixture 3. The cathode tool 4 has a uniform group seam structure, the seam width is 0.2mm, the seam spacing is 0.8mm, the diameter of the liquid inlet of the fixture is 20mm, and two outlets are arranged at the lower surface of the cathode tool Liquid port, diameter is 1mm;

[0017] b. Make a flexible template 1 with a through-hole array, such as figure 2 ;

[0018] c. Paste the flexible template 1 on the anode workpiece 2, and use the clamp 3 to clamp the cathode tool 4 and the anode workpiece 2 together, wherein the distance between the cathode tool 4 and the flexible template 1 is 15 mm;

[0019] d. The anode workpiece 2 and the cathode tool 4 are respectively connected to the positive and negative poles of the power su...

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Abstract

The invention relates to a system and a method applied to high-accuracy electrolytic machining of large-area micro-pit arrays and belongs to the field of micro electrolytic machining. The method comprises the following steps: manufacturing a cathode tool and a clamp and forming liquid outlets in the lower surface of the cathode tool, wherein the total section area ratio of a liquid inlet and the liquid outlets is 50 to 200; attaching a flexible template onto an anode workpiece, clamping the cathode tool and the anode workpiece, wherein the distance between the cathode tool and the flexible template is 10mm to 50mm; and connecting the anode workpiece and the cathode tool to a positive electrode and a negative electrode of a power supply respectively, filling electrolyte, then switching on the power supply and carrying out electrolytic machining. When the method is applied to electrolytic machining, the flexible template is closely attached onto the surface of the workpiece due to pressure and gravity of the electrolyte; meanwhile, electrolytic products in micro pits slowly flow away from a machining area; the conductivity in machining clearance is reduced; the sensitivity of the machining size to the electrical parameter is reduced; and the influence of electric field marginal effect on the machining size of the large-area micro-pit arrays is suppressed. The method is capable of effectively improving the machining accuracy of the large-area micro-pit arrays.

Description

technical field [0001] The invention relates to a system and a method for high-precision electrolytic machining of large-area micropit arrays, and belongs to the field of micro electrolytic machining. Background technique [0002] There are a variety of friction pairs in general mechanical device systems. The tribological behavior of these friction pairs not only affects the working performance and operating efficiency of the mechanical system, but is even the main factor leading to its failure. The research shows that the surface texture technology is an effective means to improve the tribological properties of the friction pair surface, and at the same time, it can increase the sealing performance of the seal. Surface texture refers to the dot matrix of patterns such as pits, dents or convex hulls with a certain size and distribution processed on the surface of the friction pair through a certain processing technology. Surfaces with micro- and nano-scale micro-textures sh...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H3/00B23H3/10
CPCB23H3/00B23H3/10
Inventor 曲宁松侯志保陈晓磊潘永强
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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