机械制造加工外文翻译----电火花线切割技术(编辑修改稿)

机械制造加工外文翻译----电火花线切割技术(编辑修改稿)内容摘要：

the workpiece, there is no significant cutting force, enabling processing of lowrigidity workpiece. (11) and EDM as pared to the wire electrode instead of forming the electrode, eliminating the molding tool design and manufacturing costs electrode Used to shorten the production lead time. WEDM the disadvantage of low productivity, and can not be blind hole machining parts and ladder surfaces. applications: (1) The trial of new products: new product development process requires a single piece samples, use of wire cutting parts cut out directly, without molds, which can greatly shorten the development cycle of new products and reduce trial costs. Such as stamping, the die is not expected to open Chula, first with a wire cutting for forming such a model for subsequent processing, be verified before blanking die manufacturing. (2) processing of special materials: cutting some of the high hardness, high melting point metal, the use of machine processing methods is almost impossible, and economical use of line cutting can ensure accuracy. (3) processing mold parts: mainly used in EDM wire cutting dies, extrusion dies, plastic dies, EDM electrodes cavity mold processing, the EDM wire cutting speed and accuracy of the rapid increase has reached can pete with the coordinates of the degree of grinding. For example, the small die, the material is tool steel, in the past with a separate mold and method of curve grinding machining, EDM wire cutting now switch to the overall processing methods, manufacturing cycle can be shortened 3 / 4 to 5 / 4, reduce the cost of 2 / 3 / 4, with high precision, the work does not require skilled operators. Therefore, some industrial countries such as precision grinding washed process has been EDM and WEDM replaced. application areas: WEDM is mainly used for a variety of dies, plastic molds, powder metallurgy molds posed of twodimensional and threedimensional ruled surface of the mold and parts. Can cut a variety of templates, mags, silicon steel, semiconductor materials or precious metals, but also for micromachining, shaped slot and the standard specimen processing defects. Widely used in electronic equipment, precision machine tools, light industrial, military and so on. (1) plane shape of the metal mold processing: die, powder metallurgy mold, drawing die, extrusion die machining (2) threedimensional shape of the metal mold processing: Die by the withdrawal of the die groove machining, plastic with metal dies, plastic mold separation surface processing (3) EDM: production of plex shapes using microelectrodes the electrode process, the general processing of perforated electrode, the electrode process with taper mold (4) test products and parts processing: prototype parts directly to processing, batch processing of small variety of parts, special materials, spare parts processing, materials, processing of specimens (5) profile gauge processing: measuring a variety of card board processing, the cam and the template processing, shape forming car (6) microprocessing: Processing of chemical fiber nozzle, shaped slot and narrow channel processing, standard processing defects 3. WEDM technology status Currently, the cutting speed WEDM has been widespread over the past 20 ~ 40mm2/min increased to 100mm2/min above, and some can reach 260mm2/min, machining accuracy is 177。 , the surface roughness of the workpiece ~ , which can meet the general mold machining and other plex parts manufacturing requirements. With the development of science and technology, the manufacture of various products have bee increasingly demanding of wire cutting technology has also put forward higher requirements. Abroad (Europe, America, Japan, etc.) to go lowspeed research and development of CNC wire electric discharge machines to meet the requirements of the manufacturing process technology, the use of closedloop digital delivery (straight) flow servo control system to ensure excellent dynamic performance and high positioning accuracy, precision can be controlled in a number of microns or less. At the same time with a digital adaptive control of power tools, automatic wear silk, automatic removable waste, shortcircuit automatic rollback and other automated techniques, in addition to the electrode wire tension and the working fluid pressure can be controlled. Due to the use of new technology and focus on updating the puter software technology and development of lowspeed wire cutting away the process indicators have reached a very high level. Even if the machining of plex shape, the maximum cutting speed of more than 300mm2/min。 size p。