EDM line cutting fluid

The wire cutting machine can be divided into high speed wire EDM machine (Reciprocating type High Speed Wire cut Electrical Discharge Machining commonly known as “fast wire”) and low speed unidirectional wire EDM machine (Low Speed one-way). Three types of Vertical Wire Electrical Discharge Machining machine tool With Rotation Wire). It can also be divided into single column cross worktable type and double column type (commonly known as Longmen type) according to the working table. [1]
Wire cutting machine for wire EDM
The wire speed of the reciprocating wire WEDM is 6~12 mm/s, which is a unique product of our country. Since September 1970, the “digital program automatic control line cutting machine” was developed by the national general wind machinery plant of the Ministry of machinery industry third, which was first created in China. In 1972, third the Ministry of machine building made a technical appraisal of the CKX CNC WEDM produced by the factory. In 1973, according to the decision of the third Ministry of machine building, the CNC WEDM machine, numbered CKX – 1, began mass production. In September 1981, DK3220 type coordinate NC machine with taper cutting function was successfully developed. The biggest feature of the product is the 1.5 degree taper cutting function. The major technical improvement of the wire cutting machine is completed. With the gradual improvement of large taper cutting technology, great progress has been made in cutting taper, upper and lower specialties. With the breakthrough of large thickness cutting technology, the accuracy of cross section and vertical section has been greatly improved, and the processing thickness can exceed 1000mm. The reciprocating wire cutting machine has more advantages. At the same time, it meets the needs of customers at home and abroad. The number of this kind of machine tool is increasing at a fast speed, from the output of 2~3 1000 units to an annual output of tens of thousands of units. At present, the stock of the national reciprocating wire cutting machine tool has reached more than 20 units. It has been used in various middle and low grade mould manufacturing and special parts processing, which has become one of the most widely used machines in our CNC machine tools. However, because the reciprocating wire cutting machine can not carry out constant tension control on the electrode wire, the electrode wire shakes greatly, and it is easy to break the wire during the process. As electrical grade wire is reciprocating, it will cause electrode wire loss, machining accuracy and surface quality.
Low speed one-way wire EDM wire cutting machine
The low speed wire cutting electrical wire is used as a tool electrode with copper wire as a tool electrode, and the pulse voltage of 60~300V is applied between copper wire and copper, steel or super hard alloy, and the 5~50um gap is maintained between copper wire and copper, steel or super hard alloy, and the gap is filled with deionized water (close to distilled water) and so on, so that the electric power is filled with 0.2mm/s. The spark discharge between the poles and the processed objects is consumed and corroded, and numerous small pits are etched out on the surface of the workpiece. Through the monitoring and control of the NC control and control, the servo mechanism is executed to make the discharge uniform and so that the machined objects are processed to make it fit the required size and shape precision. Products. At present, the accuracy is up to 0.001mm, and the surface quality is also close to the grinding level. The electrode wire is no longer used after discharge, and the non resistance electrolytic power supply is usually equipped with automatic wire drawing and constant tension device. The work is stable, uniform, small jitter, high machining accuracy and good surface quality, but it is not suitable to process large thickness workpieces. Because of the high precision, high technology content and high price of machine tools, the cost of using machine tools is also high. [1]
The single way wire electrical discharge machine (WEDM) has only the unique type of foreign companies in the early stage. The low speed WEDM in Taiwan started late, but it has developed rapidly over the past few years. One of the key measures is to make a joint contribution by a number of machine tool manufacturing enterprises, with the support of some departments concerned, and the development of a large number of manpower and material resources by the Taiwan Institute of industry and technology. After more than 10 years of research, we have made breakthroughs in key technologies such as control system and power supply. At present, the low speed wire EDM machine made by Taiwan enterprises should belong to the range of the medium machine. The growth rate of 20% ~ 30% in the last 3 years is reached. It is estimated that in the next 5 years, the annual output of the low speed wire EDM machine in Taiwan can reach 2000, which can account for more than 25% of the world market. The low speed wire EDM line cutting machine has high technical content, good market prospect and high return. It is the “competitive place” and “strategic highland” of various manufacturers in the electric processing industry. It can also be said that whoever has mastered the technology of low speed WEDM will get the next opportunity to develop and grow. In order to seize the Chinese market, Japan, Switzerland, Taiwan’s electrical machine tool manufacturing enterprises set up factories in mainland China to produce such machine tools. With the support of the special fund of the Ministry of science and technology, Chinese scientists and technicians have invested a large number of research and development forces and have completed the research and development of a new generation of low speed wire discharge wire EDM machine. It has made a major breakthrough. At present, it has a product with independent intellectual property rights and occupies a certain market share. Its performance indicators can reach a high level. The level of the gear machine. At present, there are still some domestic enterprises hope to develop low speed WEDM technology through cooperation with relevant enterprises in Taiwan. [1]
Vertical self rotating EDM wire cutting machine
Vertical self rotating WEDM (horizontal self rotating WEDM). Vertical rotary EDM line cutting