Composite method for processing metallic mold with partial three-dimensional microstructure

A composite machining and metal mold technology, applied in the field of composite machining for making metal micro-molds, can solve problems such as inability to obtain effects, poor machining surface quality, and difficult control of machining accuracy, and achieve good surface quality, high machining accuracy, and long service life. Effect
CN101327563AInactive Publication Date: 2008-12-24DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2008-12-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a combined machining method of a metal mould with a partial three-dimensional microstructure, which belongs to the field of micromachining techniques. Combined with the quasi-LIGA micromachining technique and the tiny electric spark micromachining technique, the combined machining method resolves the problem on how to machine the metal mould with a complex microstructure, part of which is three-dimensional and the rest part of which is two-dimensional. In the technical scheme, based on the LIGA technique, a planar two-dimensional microstructure is produced on a metal baseplate; according to the tiny electric spark machining mode, tool electrodes are produced; at a specified position on the two-dimensional microstructure, the shape of the two-dimensional microstructure is modified by tiny electric sparks until a three-dimensional microstructure is formed. The combined machining method has the following advantages: the machining precision and the surface quality of the two-dimensional microstructure on the metal mould are high; the shape of the two-dimensional microstructure can be modified at a specified area in order to obtain an inclined or stepped three-dimensional microstructure or a three-dimensional microstructure with any curved surface; since the material of the mould is metal, the strength of the mould is high, and the life span is long.
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Description

technical field

[0001] The invention belongs to the technical field of micro-processing, and relates to a composite processing method for making metal micro-moulds by combining quasi-LIGA technology and micro-electric spark technology. Background technique

[0002] Metal molds with three-dimensional microstructures have good application prospects in the field of microelectromechanical systems (MEMS). The processing force of micro-EDM technology is small, which is suitable for processing micro-devices with three-dimensional structure. For example, the magazine "Journal of Shanghai Jiao Tong University", Volume 42, No. 1, January 2008, pages 78-82, uses micro-EDM technology to process tiny hemispherical structures with a diameter of 150 μm. The problems of this technology are: due to the production, clamping and wear and tear of the micro-electrode, when the processing area is large, the processing accuracy is not easy to control, and the quality of the processing surface is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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